Mock Version: 5.6
Mock Version: 5.6
Mock Version: 5.6
ENTER ['do_with_status'](['bash', '--login', '-c', '/usr/bin/rpmbuild -bs --noclean --target aarch64 --nodeps /builddir/build/SPECS/rust-slog.spec'], chrootPath='/var/lib/mock/epel9-next-build-55064485-6532232/root'env={'TERM': 'vt100', 'SHELL': '/bin/bash', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'PROMPT_COMMAND': 'printf "\\033]0;<mock-chroot>\\007"', 'PS1': '<mock-chroot> \\s-\\v\\$ ', 'LANG': 'C.UTF-8'}shell=Falselogger=<mockbuild.trace_decorator.getLog object at 0xffffba17e3c0>timeout=201600uid=1000gid=425user='mockbuild'nspawn_args=['--capability=cap_ipc_lock', '--bind=/tmp/mock-resolv.6f0cgywe:/etc/resolv.conf', '--bind=/dev/btrfs-control', '--bind=/dev/mapper/control', '--bind=/dev/fuse', '--bind=/dev/loop-control', '--bind=/dev/loop0', '--bind=/dev/loop1', '--bind=/dev/loop2', '--bind=/dev/loop3', '--bind=/dev/loop4', '--bind=/dev/loop5', '--bind=/dev/loop6', '--bind=/dev/loop7', '--bind=/dev/loop8', '--bind=/dev/loop9', '--bind=/dev/loop10', '--bind=/dev/loop11']unshare_net=TrueprintOutput=False)
Using nspawn with args ['--capability=cap_ipc_lock', '--bind=/tmp/mock-resolv.6f0cgywe:/etc/resolv.conf', '--bind=/dev/btrfs-control', '--bind=/dev/mapper/control', '--bind=/dev/fuse', '--bind=/dev/loop-control', '--bind=/dev/loop0', '--bind=/dev/loop1', '--bind=/dev/loop2', '--bind=/dev/loop3', '--bind=/dev/loop4', '--bind=/dev/loop5', '--bind=/dev/loop6', '--bind=/dev/loop7', '--bind=/dev/loop8', '--bind=/dev/loop9', '--bind=/dev/loop10', '--bind=/dev/loop11']
Executing command: ['/usr/bin/systemd-nspawn', '-q', '-M', '42d11f8f8805407a9949f562ac493cdb', '-D', '/var/lib/mock/epel9-next-build-55064485-6532232/root', '-a', '-u', 'mockbuild', '--capability=cap_ipc_lock', '--bind=/tmp/mock-resolv.6f0cgywe:/etc/resolv.conf', '--bind=/dev/btrfs-control', '--bind=/dev/mapper/control', '--bind=/dev/fuse', '--bind=/dev/loop-control', '--bind=/dev/loop0', '--bind=/dev/loop1', '--bind=/dev/loop2', '--bind=/dev/loop3', '--bind=/dev/loop4', '--bind=/dev/loop5', '--bind=/dev/loop6', '--bind=/dev/loop7', '--bind=/dev/loop8', '--bind=/dev/loop9', '--bind=/dev/loop10', '--bind=/dev/loop11', '--console=pipe', '--setenv=TERM=vt100', '--setenv=SHELL=/bin/bash', '--setenv=HOME=/builddir', '--setenv=HOSTNAME=mock', '--setenv=PATH=/usr/bin:/bin:/usr/sbin:/sbin', '--setenv=PROMPT_COMMAND=printf "\\033]0;<mock-chroot>\\007"', '--setenv=PS1=<mock-chroot> \\s-\\v\\$ ', '--setenv=LANG=C.UTF-8', '--resolv-conf=off', 'bash', '--login', '-c', '/usr/bin/rpmbuild -bs --noclean --target aarch64 --nodeps /builddir/build/SPECS/rust-slog.spec'] with env {'TERM': 'vt100', 'SHELL': '/bin/bash', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'PROMPT_COMMAND': 'printf "\\033]0;<mock-chroot>\\007"', 'PS1': '<mock-chroot> \\s-\\v\\$ ', 'LANG': 'C.UTF-8', 'SYSTEMD_NSPAWN_TMPFS_TMP': '0', 'SYSTEMD_SECCOMP': '0'} and shell False
Building target platforms: aarch64
Building for target aarch64
setting SOURCE_DATE_EPOCH=1674259200
Wrote: /builddir/build/SRPMS/rust-slog-2.7.0-8.el9.next.src.rpm
Child return code was: 0
ENTER ['do_with_status'](['bash', '--login', '-c', '/usr/bin/rpmbuild -br --noclean --target aarch64 --nodeps /builddir/build/SPECS/rust-slog.spec'], chrootPath='/var/lib/mock/epel9-next-build-55064485-6532232/root'env={'TERM': 'vt100', 'SHELL': '/bin/bash', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'PROMPT_COMMAND': 'printf "\\033]0;<mock-chroot>\\007"', 'PS1': '<mock-chroot> \\s-\\v\\$ ', 'LANG': 'C.UTF-8'}shell=Falselogger=<mockbuild.trace_decorator.getLog object at 0xffffba17e3c0>timeout=201600uid=1000gid=425user='mockbuild'nspawn_args=['--capability=cap_ipc_lock', '--bind=/tmp/mock-resolv.6f0cgywe:/etc/resolv.conf', '--bind=/dev/btrfs-control', '--bind=/dev/mapper/control', '--bind=/dev/fuse', '--bind=/dev/loop-control', '--bind=/dev/loop0', '--bind=/dev/loop1', '--bind=/dev/loop2', '--bind=/dev/loop3', '--bind=/dev/loop4', '--bind=/dev/loop5', '--bind=/dev/loop6', '--bind=/dev/loop7', '--bind=/dev/loop8', '--bind=/dev/loop9', '--bind=/dev/loop10', '--bind=/dev/loop11']unshare_net=TrueraiseExc=FalseprintOutput=False)
Using nspawn with args ['--capability=cap_ipc_lock', '--bind=/tmp/mock-resolv.6f0cgywe:/etc/resolv.conf', '--bind=/dev/btrfs-control', '--bind=/dev/mapper/control', '--bind=/dev/fuse', '--bind=/dev/loop-control', '--bind=/dev/loop0', '--bind=/dev/loop1', '--bind=/dev/loop2', '--bind=/dev/loop3', '--bind=/dev/loop4', '--bind=/dev/loop5', '--bind=/dev/loop6', '--bind=/dev/loop7', '--bind=/dev/loop8', '--bind=/dev/loop9', '--bind=/dev/loop10', '--bind=/dev/loop11']
Executing command: ['/usr/bin/systemd-nspawn', '-q', '-M', 'c35c7fe83688454ea3d6a7c1d133e595', '-D', '/var/lib/mock/epel9-next-build-55064485-6532232/root', '-a', '-u', 'mockbuild', '--capability=cap_ipc_lock', '--bind=/tmp/mock-resolv.6f0cgywe:/etc/resolv.conf', '--bind=/dev/btrfs-control', '--bind=/dev/mapper/control', '--bind=/dev/fuse', '--bind=/dev/loop-control', '--bind=/dev/loop0', '--bind=/dev/loop1', '--bind=/dev/loop2', '--bind=/dev/loop3', '--bind=/dev/loop4', '--bind=/dev/loop5', '--bind=/dev/loop6', '--bind=/dev/loop7', '--bind=/dev/loop8', '--bind=/dev/loop9', '--bind=/dev/loop10', '--bind=/dev/loop11', '--console=pipe', '--setenv=TERM=vt100', '--setenv=SHELL=/bin/bash', '--setenv=HOME=/builddir', '--setenv=HOSTNAME=mock', '--setenv=PATH=/usr/bin:/bin:/usr/sbin:/sbin', '--setenv=PROMPT_COMMAND=printf "\\033]0;<mock-chroot>\\007"', '--setenv=PS1=<mock-chroot> \\s-\\v\\$ ', '--setenv=LANG=C.UTF-8', '--resolv-conf=off', 'bash', '--login', '-c', '/usr/bin/rpmbuild -br --noclean --target aarch64 --nodeps /builddir/build/SPECS/rust-slog.spec'] with env {'TERM': 'vt100', 'SHELL': '/bin/bash', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'PROMPT_COMMAND': 'printf "\\033]0;<mock-chroot>\\007"', 'PS1': '<mock-chroot> \\s-\\v\\$ ', 'LANG': 'C.UTF-8', 'SYSTEMD_NSPAWN_TMPFS_TMP': '0', 'SYSTEMD_SECCOMP': '0'} and shell False
Building target platforms: aarch64
Building for target aarch64
setting SOURCE_DATE_EPOCH=1674259200
Executing(%prep): /bin/sh -e /var/tmp/rpm-tmp.v3Co75
+ umask 022
+ cd /builddir/build/BUILD
+ cd /builddir/build/BUILD
+ rm -rf slog-2.7.0
+ /usr/bin/gzip -dc /builddir/build/SOURCES/slog-2.7.0.crate
+ /usr/bin/tar -xof -
+ STATUS=0
+ '[' 0 -ne 0 ']'
+ cd slog-2.7.0
+ /usr/bin/chmod -Rf a+rX,u+w,g-w,o-w .
+ /usr/bin/cat /builddir/build/SOURCES/slog-fix-metadata.diff
+ /usr/bin/patch -p1 -s --fuzz=0 --no-backup-if-mismatch
+ set -euo pipefail
+ /usr/bin/mkdir -p target/rpm
+ /usr/bin/ln -s rpm target/release
+ /usr/bin/rm -rf .cargo/
+ /usr/bin/mkdir -p .cargo
+ cat
+ cat
+ /usr/bin/rm -f Cargo.lock
+ /usr/bin/rm -f Cargo.toml.orig
+ RPM_EC=0
++ jobs -p
+ exit 0
Executing(%generate_buildrequires): /bin/sh -e /var/tmp/rpm-tmp.kN2epq
+ umask 022
+ cd /builddir/build/BUILD
+ cd slog-2.7.0
+ /usr/bin/cargo2rpm --path Cargo.toml buildrequires --with-check
+ RPM_EC=0
++ jobs -p
+ exit 0
Wrote: /builddir/build/SRPMS/rust-slog-2.7.0-8.el9.next.buildreqs.nosrc.rpm
Child return code was: 11
Dynamic buildrequires detected
Going to install missing buildrequires. See root.log for details.
ENTER ['do_with_status'](['bash', '--login', '-c', '/usr/bin/rpmbuild -ba --noprep --noclean --target aarch64 /builddir/build/SPECS/rust-slog.spec'], chrootPath='/var/lib/mock/epel9-next-build-55064485-6532232/root'env={'TERM': 'vt100', 'SHELL': '/bin/bash', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'PROMPT_COMMAND': 'printf "\\033]0;<mock-chroot>\\007"', 'PS1': '<mock-chroot> \\s-\\v\\$ ', 'LANG': 'C.UTF-8'}shell=Falselogger=<mockbuild.trace_decorator.getLog object at 0xffffba17e3c0>timeout=201600uid=1000gid=425user='mockbuild'nspawn_args=['--capability=cap_ipc_lock', '--bind=/tmp/mock-resolv.6f0cgywe:/etc/resolv.conf', '--bind=/dev/btrfs-control', '--bind=/dev/mapper/control', '--bind=/dev/fuse', '--bind=/dev/loop-control', '--bind=/dev/loop0', '--bind=/dev/loop1', '--bind=/dev/loop2', '--bind=/dev/loop3', '--bind=/dev/loop4', '--bind=/dev/loop5', '--bind=/dev/loop6', '--bind=/dev/loop7', '--bind=/dev/loop8', '--bind=/dev/loop9', '--bind=/dev/loop10', '--bind=/dev/loop11']unshare_net=TrueprintOutput=False)
Using nspawn with args ['--capability=cap_ipc_lock', '--bind=/tmp/mock-resolv.6f0cgywe:/etc/resolv.conf', '--bind=/dev/btrfs-control', '--bind=/dev/mapper/control', '--bind=/dev/fuse', '--bind=/dev/loop-control', '--bind=/dev/loop0', '--bind=/dev/loop1', '--bind=/dev/loop2', '--bind=/dev/loop3', '--bind=/dev/loop4', '--bind=/dev/loop5', '--bind=/dev/loop6', '--bind=/dev/loop7', '--bind=/dev/loop8', '--bind=/dev/loop9', '--bind=/dev/loop10', '--bind=/dev/loop11']
Executing command: ['/usr/bin/systemd-nspawn', '-q', '-M', '39b924b5e13b4832afc70a7417916693', '-D', '/var/lib/mock/epel9-next-build-55064485-6532232/root', '-a', '-u', 'mockbuild', '--capability=cap_ipc_lock', '--bind=/tmp/mock-resolv.6f0cgywe:/etc/resolv.conf', '--bind=/dev/btrfs-control', '--bind=/dev/mapper/control', '--bind=/dev/fuse', '--bind=/dev/loop-control', '--bind=/dev/loop0', '--bind=/dev/loop1', '--bind=/dev/loop2', '--bind=/dev/loop3', '--bind=/dev/loop4', '--bind=/dev/loop5', '--bind=/dev/loop6', '--bind=/dev/loop7', '--bind=/dev/loop8', '--bind=/dev/loop9', '--bind=/dev/loop10', '--bind=/dev/loop11', '--console=pipe', '--setenv=TERM=vt100', '--setenv=SHELL=/bin/bash', '--setenv=HOME=/builddir', '--setenv=HOSTNAME=mock', '--setenv=PATH=/usr/bin:/bin:/usr/sbin:/sbin', '--setenv=PROMPT_COMMAND=printf "\\033]0;<mock-chroot>\\007"', '--setenv=PS1=<mock-chroot> \\s-\\v\\$ ', '--setenv=LANG=C.UTF-8', '--resolv-conf=off', 'bash', '--login', '-c', '/usr/bin/rpmbuild -ba --noprep --noclean --target aarch64 /builddir/build/SPECS/rust-slog.spec'] with env {'TERM': 'vt100', 'SHELL': '/bin/bash', 'HOME': '/builddir', 'HOSTNAME': 'mock', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin', 'PROMPT_COMMAND': 'printf "\\033]0;<mock-chroot>\\007"', 'PS1': '<mock-chroot> \\s-\\v\\$ ', 'LANG': 'C.UTF-8', 'SYSTEMD_NSPAWN_TMPFS_TMP': '0', 'SYSTEMD_SECCOMP': '0'} and shell False
Building target platforms: aarch64
Building for target aarch64
setting SOURCE_DATE_EPOCH=1674259200
Executing(%generate_buildrequires): /bin/sh -e /var/tmp/rpm-tmp.YfzPwG
+ umask 022
+ cd /builddir/build/BUILD
+ cd slog-2.7.0
+ /usr/bin/cargo2rpm --path Cargo.toml buildrequires --with-check
+ RPM_EC=0
++ jobs -p
+ exit 0
Executing(%build): /bin/sh -e /var/tmp/rpm-tmp.scVV5S
+ umask 022
+ cd /builddir/build/BUILD
+ cd slog-2.7.0
+ /usr/bin/env CARGO_HOME=.cargo RUSTC_BOOTSTRAP=1 'RUSTFLAGS=-Copt-level=3 -Cdebuginfo=2 -Ccodegen-units=1 -Cstrip=none --cap-lints=warn' /usr/bin/cargo build -j12 -Z avoid-dev-deps --profile rpm
warning: no edition set: defaulting to the 2015 edition while the latest is 2021
   Compiling slog v2.7.0 (/builddir/build/BUILD/slog-2.7.0)
     Running `/usr/bin/rustc --crate-name build_script_build --edition=2015 build.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debug-assertions=off --cfg 'feature="default"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values("default", "dynamic-keys", "erased-serde", "max_level_debug", "max_level_error", "max_level_info", "max_level_off", "max_level_trace", "max_level_warn", "nested-values", "nothreads", "release_max_level_debug", "release_max_level_error", "release_max_level_info", "release_max_level_off", "release_max_level_trace", "release_max_level_warn", "std"))' -C metadata=0413550b3b3f172f -C extra-filename=-0413550b3b3f172f --out-dir /builddir/build/BUILD/slog-2.7.0/target/rpm/build/slog-0413550b3b3f172f -L dependency=/builddir/build/BUILD/slog-2.7.0/target/rpm/deps -Copt-level=3 -Cdebuginfo=2 -Ccodegen-units=1 -Cstrip=none --cap-lints=warn`
     Running `/builddir/build/BUILD/slog-2.7.0/target/rpm/build/slog-0413550b3b3f172f/build-script-build`
     Running `/usr/bin/rustc --crate-name slog --edition=2015 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values("default", "dynamic-keys", "erased-serde", "max_level_debug", "max_level_error", "max_level_info", "max_level_off", "max_level_trace", "max_level_warn", "nested-values", "nothreads", "release_max_level_debug", "release_max_level_error", "release_max_level_info", "release_max_level_off", "release_max_level_trace", "release_max_level_warn", "std"))' -C metadata=12e793f59b7bd521 -C extra-filename=-12e793f59b7bd521 --out-dir /builddir/build/BUILD/slog-2.7.0/target/rpm/deps -L dependency=/builddir/build/BUILD/slog-2.7.0/target/rpm/deps -Copt-level=3 -Cdebuginfo=2 -Ccodegen-units=1 -Cstrip=none --cap-lints=warn --cfg integer128`
warning: unexpected `cfg` condition name: `macro_workaround`
    --> src/lib.rs:2561:7
     |
2561 | #[cfg(macro_workaround)]
     |       ^^^^^^^^^^^^^^^^
     |
     = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `fmt_debug`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `rustfmt`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `ub_checks`, `unix`, and `windows`
     = help: consider using a Cargo feature instead
     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
              [lints.rust]
              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(macro_workaround)'] }
     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(macro_workaround)");` to the top of the `build.rs`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
     = note: `#[warn(unexpected_cfgs)]` on by default
warning: unexpected `cfg` condition name: `macro_workaround`
    --> src/lib.rs:2576:11
     |
2576 | #[cfg(not(macro_workaround))]
     |           ^^^^^^^^^^^^^^^^
     |
     = help: consider using a Cargo feature instead
     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
              [lints.rust]
              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(macro_workaround)'] }
     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(macro_workaround)");` to the top of the `build.rs`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition name: `integer128`
    --> src/lib.rs:2885:7
     |
2885 | #[cfg(integer128)]
     |       ^^^^^^^^^^
     |
     = help: consider using a Cargo feature instead
     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
              [lints.rust]
              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(integer128)'] }
     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(integer128)");` to the top of the `build.rs`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition name: `integer128`
    --> src/lib.rs:2887:7
     |
2887 | #[cfg(integer128)]
     |       ^^^^^^^^^^
     |
     = help: consider using a Cargo feature instead
     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
              [lints.rust]
              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(integer128)'] }
     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(integer128)");` to the top of the `build.rs`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `cargo-clippy`
    --> src/lib.rs:1215:16
     |
1215 |     #[cfg_attr(feature = "cargo-clippy", allow(wrong_self_convention))]
     |                ^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = note: expected values for `feature` are: `default`, `dynamic-keys`, `erased-serde`, `max_level_debug`, `max_level_error`, `max_level_info`, `max_level_off`, `max_level_trace`, `max_level_warn`, `nested-values`, `nothreads`, `release_max_level_debug`, `release_max_level_error`, `release_max_level_info`, `release_max_level_off`, `release_max_level_trace`, `release_max_level_warn`, and `std`
     = help: consider adding `cargo-clippy` as a feature in `Cargo.toml`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:1281:9
     |
1281 |         try!(write!(f, "Logger{:?}", self.list));
     |         ^^^
     |
     = note: `#[warn(deprecated)]` on by default
warning: unexpected `cfg` condition name: `integer128`
    --> src/lib.rs:2669:15
     |
2669 |         #[cfg(integer128)]
     |               ^^^^^^^^^^
     |
     = help: consider using a Cargo feature instead
     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
              [lints.rust]
              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(integer128)'] }
     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(integer128)");` to the top of the `build.rs`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition name: `integer128`
    --> src/lib.rs:2674:15
     |
2674 |         #[cfg(integer128)]
     |               ^^^^^^^^^^
     |
     = help: consider using a Cargo feature instead
     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
              [lints.rust]
              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(integer128)'] }
     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(integer128)");` to the top of the `build.rs`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3336:9
     |
3336 |         try!(self.0.serialize(record, serializer));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3460:9
     |
3460 |         try!(self.kv.serialize(record, serializer));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3461:9
     |
3461 |         try!(self.next_node.serialize(record, serializer));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3473:9
     |
3473 |         try!(self.next_node.serialize(record, serializer));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3474:9
     |
3474 |         try!(self.node.serialize(record, serializer));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3486:9
     |
3486 |         try!(self.node.serialize(record, serializer));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3494:9
     |
3494 |         try!(write!(f, "("));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3523:9
     |
3523 |         try!(write!(f, ")"));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3509:13
     |
3509 |             try!(
     |             ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3503:17
     |
3503 |                 try!(write!(f, "{}", key));
     |                 ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3500:21
     |
3500 |                     try!(write!(f, ", "));
     |                     ^^^
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:1837:17
     |
1837 |     map_fn: Box<MapErrFn<D::Err, E, Output = E>>,
     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: `#[warn(bare_trait_objects)]` on by default
help: if this is an object-safe trait, use `dyn`
     |
1837 |     map_fn: Box<dyn MapErrFn<D::Err, E, Output = E>>,
     |                 +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2752:32
     |
2752 | struct ErrorAsFmt<'a>(pub &'a (std::error::Error + 'static));
     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2752 | struct ErrorAsFmt<'a>(pub &'a (dyn std::error::Error + 'static));
     |                                +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3069:25
     |
3069 |     serializer: &'a mut Serializer,
     |                         ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3069 |     serializer: &'a mut dyn Serializer,
     |                         +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3426:13
     |
3426 |     pub &'a KV,
     |             ^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3426 |     pub &'a dyn KV,
     |             +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3436:20
     |
3436 |     next_node: Arc<SendSyncRefUnwindSafeKV + 'static>,
     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3436 |     next_node: Arc<dyn SendSyncRefUnwindSafeKV + 'static>,
     |                    +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3441:20
     |
3441 |     next_node: Arc<SendSyncRefUnwindSafeKV + 'static>,
     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3441 |     next_node: Arc<dyn SendSyncRefUnwindSafeKV + 'static>,
     |                    +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3442:15
     |
3442 |     node: Arc<SendSyncRefUnwindSafeKV + 'static>,
     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3442 |     node: Arc<dyn SendSyncRefUnwindSafeKV + 'static>,
     |               +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3448:15
     |
3448 |     node: Arc<SendSyncRefUnwindSafeKV + 'static>,
     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3448 |     node: Arc<dyn SendSyncRefUnwindSafeKV + 'static>,
     |               +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:1109:27
     |
1109 | pub struct Logger<D = Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
1109 | pub struct Logger<D = Arc<dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
     |                           +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2726:49
     |
2726 |     fn emit_error(&mut self, key: Key, error: &(std::error::Error + 'static)) -> Result {
     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2726 |     fn emit_error(&mut self, key: Key, error: &(dyn std::error::Error + 'static)) -> Result {
     |                                                 +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2839:26
     |
2839 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2839 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3243:59
     |
3243 |     fn serialize(&self, record: &Record, serializer: &mut Serializer)
     |                                                           ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3243 |     fn serialize(&self, record: &Record, serializer: &mut dyn Serializer)
     |                                                           +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:1252:21
     |
1252 |     ) -> Logger<Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
1252 |     ) -> Logger<Arc<dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
     |                     +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:1268:21
     |
1268 |     ) -> Logger<Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
1268 |     ) -> Logger<Arc<dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
     |                     +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2025:32
     |
2025 |     fn cause(&self) -> Option<&std::error::Error> {
     |                                ^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2025 |     fn cause(&self) -> Option<&dyn std::error::Error> {
     |                                +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2851:26
     |
2851 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2851 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2917:26
     |
2917 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2917 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2939:26
     |
2939 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2939 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2956:26
     |
2956 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2956 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2969:26
     |
2969 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2969 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2983:26
     |
2983 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2983 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2997:26
     |
2997 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2997 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3009:26
     |
3009 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3009 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3052:26
     |
3052 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3052 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3147:26
     |
3147 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3147 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3179:26
     |
3179 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3179 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3254:26
     |
3254 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3254 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3314:26
     |
3314 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3314 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3334:26
     |
3334 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3334 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3348:26
     |
3348 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3348 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3361:26
     |
3361 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3361 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3374:26
     |
3374 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3374 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3384:26
     |
3384 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3384 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3458:26
     |
3458 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3458 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3545:24
     |
3545 |         next_node: Arc<SendSyncRefUnwindSafeKV + 'static>,
     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3545 |         next_node: Arc<dyn SendSyncRefUnwindSafeKV + 'static>,
     |                        +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2871 | impl_value_for!(usize, emit_usize);
     | ---------------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2872 | impl_value_for!(isize, emit_isize);
     | ---------------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2873 | impl_value_for!(bool, emit_bool);
     | -------------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2874 | impl_value_for!(char, emit_char);
     | -------------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2875 | impl_value_for!(u8, emit_u8);
     | ---------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2876 | impl_value_for!(i8, emit_i8);
     | ---------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2877 | impl_value_for!(u16, emit_u16);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2878 | impl_value_for!(i16, emit_i16);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2879 | impl_value_for!(u32, emit_u32);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2880 | impl_value_for!(i32, emit_i32);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2881 | impl_value_for!(f32, emit_f32);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2882 | impl_value_for!(u64, emit_u64);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2883 | impl_value_for!(i64, emit_i64);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2884 | impl_value_for!(f64, emit_f64);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2886 | impl_value_for!(u128, emit_u128);
     | -------------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2888 | impl_value_for!(i128, emit_i128);
     | -------------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2895:26
     |
2895 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2895 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2906:26
     |
2906 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2906 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2928:26
     |
2928 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2928 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3021:26
     |
3021 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3021 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3033:26
     |
3033 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3033 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3324:27
     |
3324 |         _serializer: &mut Serializer,
     |                           ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3324 |         _serializer: &mut dyn Serializer,
     |                           +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3471:26
     |
3471 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3471 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3484:26
     |
3484 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3484 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3634:32
     |
3634 |     fn cause(&self) -> Option<&std::error::Error> {
     |                                ^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3634 |     fn cause(&self) -> Option<&dyn std::error::Error> {
     |                                +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3723:22
     |
3723 | pub type Serialize = Value;
     |                      ^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3723 | pub type Serialize = dyn Value;
     |                      +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:1154:24
     |
1154 |                 as Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>,
     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
1154 |                 as Arc<dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>,
     |                        +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:1258:24
     |
1258 |                 as Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>,
     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
1258 |                 as Arc<dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>,
     |                        +++
warning: use of deprecated method `core::error::Error::description`: use the Display impl or to_string()
    --> src/lib.rs:2021:48
     |
2021 |             MutexDrainError::Drain(ref e) => e.description(),
     |                                                ^^^^^^^^^^^
warning: use of deprecated method `core::error::Error::description`: use the Display impl or to_string()
    --> src/lib.rs:3628:35
     |
3628 |             Error::Io(ref e) => e.description(),
     |                                   ^^^^^^^^^^^
warning: call to `.clone()` on a reference in this situation does nothing
    --> src/lib.rs:3085:42
     |
3085 |         s.serialize(self.record, self.key.clone(), self.serializer)
     |                                          ^^^^^^^^ help: remove this redundant call
     |
     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
     = note: `#[warn(noop_method_call)]` on by default
warning: call to `.clone()` on a reference in this situation does nothing
    --> src/lib.rs:3093:55
     |
3093 |             let _ = self.serializer.emit_unit(self.key.clone());
     |                                                       ^^^^^^^^ help: remove this redundant call
     |
     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
warning: call to `.clone()` on a reference in this situation does nothing
    --> src/lib.rs:3316:40
     |
3316 |         self.1.serialize(record, self.0.clone(), serializer)
     |                                        ^^^^^^^^ help: remove this redundant call
     |
     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
warning: `slog` (lib) generated 87 warnings (run `cargo fix --lib -p slog` to apply 50 suggestions)
    Finished `rpm` profile [optimized + debuginfo] target(s) in 1.36s
+ RPM_EC=0
++ jobs -p
+ exit 0
Executing(%install): /bin/sh -e /var/tmp/rpm-tmp.qbZPE1
+ umask 022
+ cd /builddir/build/BUILD
+ '[' /builddir/build/BUILDROOT/rust-slog-2.7.0-8.el9.next.aarch64 '!=' / ']'
+ rm -rf /builddir/build/BUILDROOT/rust-slog-2.7.0-8.el9.next.aarch64
++ dirname /builddir/build/BUILDROOT/rust-slog-2.7.0-8.el9.next.aarch64
+ mkdir -p /builddir/build/BUILDROOT
+ mkdir /builddir/build/BUILDROOT/rust-slog-2.7.0-8.el9.next.aarch64
+ cd slog-2.7.0
+ set -euo pipefail
++ /usr/bin/cargo2rpm --path Cargo.toml is-lib
+ '[' 1 -eq 1 ']'
+ '[' 1 -eq 1 ']'
++ /usr/bin/cargo2rpm --path Cargo.toml name
+ CRATE_NAME=slog
++ /usr/bin/cargo2rpm --path Cargo.toml version
+ CRATE_VERSION=2.7.0
+ REG_DIR=/builddir/build/BUILDROOT/rust-slog-2.7.0-8.el9.next.aarch64/usr/share/cargo/registry/slog-2.7.0
+ /usr/bin/mkdir -p /builddir/build/BUILDROOT/rust-slog-2.7.0-8.el9.next.aarch64/usr/share/cargo/registry/slog-2.7.0
+ gawk -i inplace -v INPLACE_SUFFIX=.deps '/^\[((.+\.)?((dev|build)-)?dependencies|features)/{f=1;next} /^\[/{f=0}; !f' Cargo.toml
+ /usr/bin/env CARGO_HOME=.cargo RUSTC_BOOTSTRAP=1 'RUSTFLAGS=-Copt-level=3 -Cdebuginfo=2 -Ccodegen-units=1 -Cstrip=none --cap-lints=warn' /usr/bin/cargo package -l
+ grep -w -E -v 'Cargo.(lock|toml.orig)'
+ xargs -d '\n' /usr/bin/cp --parents -a -t /builddir/build/BUILDROOT/rust-slog-2.7.0-8.el9.next.aarch64/usr/share/cargo/registry/slog-2.7.0
warning: no (git) VCS found for `/builddir/build/BUILD/slog-2.7.0`
+ /usr/bin/mv Cargo.toml.deps Cargo.toml
+ /usr/bin/cp -a Cargo.toml /builddir/build/BUILDROOT/rust-slog-2.7.0-8.el9.next.aarch64/usr/share/cargo/registry/slog-2.7.0/Cargo.toml
+ /usr/bin/rm -f /builddir/build/BUILDROOT/rust-slog-2.7.0-8.el9.next.aarch64/usr/share/cargo/registry/slog-2.7.0/Cargo.toml.deps
+ echo '{"files":{},"package":""}'
++ /usr/bin/cargo2rpm --path Cargo.toml is-bin
+ '[' 0 -eq 1 ']'
+ /usr/lib/rpm/check-buildroot
+ /usr/lib/rpm/redhat/brp-ldconfig
+ /usr/lib/rpm/brp-compress
+ /usr/lib/rpm/brp-strip /usr/bin/strip
+ /usr/lib/rpm/brp-strip-comment-note /usr/bin/strip /usr/bin/objdump
+ /usr/lib/rpm/redhat/brp-strip-lto /usr/bin/strip
+ /usr/lib/rpm/brp-strip-static-archive /usr/bin/strip
+ /usr/lib/rpm/redhat/brp-python-bytecompile '' 1 0
+ /usr/lib/rpm/brp-python-hardlink
+ /usr/lib/rpm/redhat/brp-mangle-shebangs
Executing(%check): /bin/sh -e /var/tmp/rpm-tmp.EjmkvZ
+ umask 022
+ cd /builddir/build/BUILD
+ cd slog-2.7.0
+ /usr/bin/env CARGO_HOME=.cargo RUSTC_BOOTSTRAP=1 'RUSTFLAGS=-Copt-level=3 -Cdebuginfo=2 -Ccodegen-units=1 -Cstrip=none --cap-lints=warn' /usr/bin/cargo test -j12 -Z avoid-dev-deps --profile rpm --no-fail-fast
warning: no edition set: defaulting to the 2015 edition while the latest is 2021
warning: unexpected `cfg` condition name: `macro_workaround`
    --> src/lib.rs:2561:7
     |
2561 | #[cfg(macro_workaround)]
     |       ^^^^^^^^^^^^^^^^
     |
     = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `fmt_debug`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `rustfmt`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `ub_checks`, `unix`, and `windows`
     = help: consider using a Cargo feature instead
     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
              [lints.rust]
              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(macro_workaround)'] }
     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(macro_workaround)");` to the top of the `build.rs`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
     = note: `#[warn(unexpected_cfgs)]` on by default
warning: unexpected `cfg` condition name: `macro_workaround`
    --> src/lib.rs:2576:11
     |
2576 | #[cfg(not(macro_workaround))]
     |           ^^^^^^^^^^^^^^^^
     |
     = help: consider using a Cargo feature instead
     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
              [lints.rust]
              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(macro_workaround)'] }
     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(macro_workaround)");` to the top of the `build.rs`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition name: `integer128`
    --> src/lib.rs:2885:7
     |
2885 | #[cfg(integer128)]
     |       ^^^^^^^^^^
     |
     = help: consider using a Cargo feature instead
     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
              [lints.rust]
              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(integer128)'] }
     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(integer128)");` to the top of the `build.rs`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition name: `integer128`
    --> src/lib.rs:2887:7
     |
2887 | #[cfg(integer128)]
     |       ^^^^^^^^^^
     |
     = help: consider using a Cargo feature instead
     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
              [lints.rust]
              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(integer128)'] }
     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(integer128)");` to the top of the `build.rs`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `cargo-clippy`
    --> src/lib.rs:1215:16
     |
1215 |     #[cfg_attr(feature = "cargo-clippy", allow(wrong_self_convention))]
     |                ^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = note: expected values for `feature` are: `default`, `dynamic-keys`, `erased-serde`, `max_level_debug`, `max_level_error`, `max_level_info`, `max_level_off`, `max_level_trace`, `max_level_warn`, `nested-values`, `nothreads`, `release_max_level_debug`, `release_max_level_error`, `release_max_level_info`, `release_max_level_off`, `release_max_level_trace`, `release_max_level_warn`, and `std`
     = help: consider adding `cargo-clippy` as a feature in `Cargo.toml`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:1281:9
     |
1281 |         try!(write!(f, "Logger{:?}", self.list));
     |         ^^^
     |
     = note: `#[warn(deprecated)]` on by default
warning: unexpected `cfg` condition name: `integer128`
    --> src/lib.rs:2669:15
     |
2669 |         #[cfg(integer128)]
     |               ^^^^^^^^^^
     |
     = help: consider using a Cargo feature instead
     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
              [lints.rust]
              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(integer128)'] }
     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(integer128)");` to the top of the `build.rs`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition name: `integer128`
    --> src/lib.rs:2674:15
     |
2674 |         #[cfg(integer128)]
     |               ^^^^^^^^^^
     |
     = help: consider using a Cargo feature instead
     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
              [lints.rust]
              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(integer128)'] }
     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(integer128)");` to the top of the `build.rs`
     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3336:9
     |
3336 |         try!(self.0.serialize(record, serializer));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3460:9
     |
3460 |         try!(self.kv.serialize(record, serializer));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3461:9
     |
3461 |         try!(self.next_node.serialize(record, serializer));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3473:9
     |
3473 |         try!(self.next_node.serialize(record, serializer));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3474:9
     |
3474 |         try!(self.node.serialize(record, serializer));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3486:9
     |
3486 |         try!(self.node.serialize(record, serializer));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3494:9
     |
3494 |         try!(write!(f, "("));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3523:9
     |
3523 |         try!(write!(f, ")"));
     |         ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3509:13
     |
3509 |             try!(
     |             ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3503:17
     |
3503 |                 try!(write!(f, "{}", key));
     |                 ^^^
warning: use of deprecated macro `try`: use the `?` operator instead
    --> src/lib.rs:3500:21
     |
3500 |                     try!(write!(f, ", "));
     |                     ^^^
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:1837:17
     |
1837 |     map_fn: Box<MapErrFn<D::Err, E, Output = E>>,
     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: `#[warn(bare_trait_objects)]` on by default
help: if this is an object-safe trait, use `dyn`
     |
1837 |     map_fn: Box<dyn MapErrFn<D::Err, E, Output = E>>,
     |                 +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2752:32
     |
2752 | struct ErrorAsFmt<'a>(pub &'a (std::error::Error + 'static));
     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2752 | struct ErrorAsFmt<'a>(pub &'a (dyn std::error::Error + 'static));
     |                                +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3069:25
     |
3069 |     serializer: &'a mut Serializer,
     |                         ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3069 |     serializer: &'a mut dyn Serializer,
     |                         +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3426:13
     |
3426 |     pub &'a KV,
     |             ^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3426 |     pub &'a dyn KV,
     |             +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3436:20
     |
3436 |     next_node: Arc<SendSyncRefUnwindSafeKV + 'static>,
     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3436 |     next_node: Arc<dyn SendSyncRefUnwindSafeKV + 'static>,
     |                    +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3441:20
     |
3441 |     next_node: Arc<SendSyncRefUnwindSafeKV + 'static>,
     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3441 |     next_node: Arc<dyn SendSyncRefUnwindSafeKV + 'static>,
     |                    +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3442:15
     |
3442 |     node: Arc<SendSyncRefUnwindSafeKV + 'static>,
     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3442 |     node: Arc<dyn SendSyncRefUnwindSafeKV + 'static>,
     |               +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3448:15
     |
3448 |     node: Arc<SendSyncRefUnwindSafeKV + 'static>,
     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3448 |     node: Arc<dyn SendSyncRefUnwindSafeKV + 'static>,
     |               +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:1109:27
     |
1109 | pub struct Logger<D = Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
1109 | pub struct Logger<D = Arc<dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
     |                           +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2726:49
     |
2726 |     fn emit_error(&mut self, key: Key, error: &(std::error::Error + 'static)) -> Result {
     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2726 |     fn emit_error(&mut self, key: Key, error: &(dyn std::error::Error + 'static)) -> Result {
     |                                                 +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2839:26
     |
2839 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2839 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3243:59
     |
3243 |     fn serialize(&self, record: &Record, serializer: &mut Serializer)
     |                                                           ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3243 |     fn serialize(&self, record: &Record, serializer: &mut dyn Serializer)
     |                                                           +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:1252:21
     |
1252 |     ) -> Logger<Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
1252 |     ) -> Logger<Arc<dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
     |                     +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:1268:21
     |
1268 |     ) -> Logger<Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
1268 |     ) -> Logger<Arc<dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
     |                     +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2025:32
     |
2025 |     fn cause(&self) -> Option<&std::error::Error> {
     |                                ^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2025 |     fn cause(&self) -> Option<&dyn std::error::Error> {
     |                                +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2851:26
     |
2851 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2851 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2917:26
     |
2917 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2917 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2939:26
     |
2939 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2939 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2956:26
     |
2956 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2956 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2969:26
     |
2969 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2969 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2983:26
     |
2983 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2983 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2997:26
     |
2997 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2997 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3009:26
     |
3009 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3009 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3052:26
     |
3052 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3052 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3147:26
     |
3147 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3147 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3179:26
     |
3179 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3179 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3254:26
     |
3254 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3254 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3314:26
     |
3314 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3314 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3334:26
     |
3334 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3334 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3348:26
     |
3348 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3348 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3361:26
     |
3361 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3361 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3374:26
     |
3374 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3374 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3384:26
     |
3384 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3384 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3458:26
     |
3458 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3458 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3545:24
     |
3545 |         next_node: Arc<SendSyncRefUnwindSafeKV + 'static>,
     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3545 |         next_node: Arc<dyn SendSyncRefUnwindSafeKV + 'static>,
     |                        +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2871 | impl_value_for!(usize, emit_usize);
     | ---------------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2872 | impl_value_for!(isize, emit_isize);
     | ---------------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2873 | impl_value_for!(bool, emit_bool);
     | -------------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2874 | impl_value_for!(char, emit_char);
     | -------------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2875 | impl_value_for!(u8, emit_u8);
     | ---------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2876 | impl_value_for!(i8, emit_i8);
     | ---------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2877 | impl_value_for!(u16, emit_u16);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2878 | impl_value_for!(i16, emit_i16);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2879 | impl_value_for!(u32, emit_u32);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2880 | impl_value_for!(i32, emit_i32);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2881 | impl_value_for!(f32, emit_f32);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2882 | impl_value_for!(u64, emit_u64);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2883 | impl_value_for!(i64, emit_i64);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2884 | impl_value_for!(f64, emit_f64);
     | ------------------------------ in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2886 | impl_value_for!(u128, emit_u128);
     | -------------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2863:44
     |
2863 |                          serializer : &mut Serializer
     |                                            ^^^^^^^^^^
...
2888 | impl_value_for!(i128, emit_i128);
     | -------------------------------- in this macro invocation
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
     = note: this warning originates in the macro `impl_value_for` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2895:26
     |
2895 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2895 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2906:26
     |
2906 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2906 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:2928:26
     |
2928 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
2928 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3021:26
     |
3021 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3021 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3033:26
     |
3033 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3033 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3324:27
     |
3324 |         _serializer: &mut Serializer,
     |                           ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3324 |         _serializer: &mut dyn Serializer,
     |                           +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3471:26
     |
3471 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3471 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3484:26
     |
3484 |         serializer: &mut Serializer,
     |                          ^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3484 |         serializer: &mut dyn Serializer,
     |                          +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3634:32
     |
3634 |     fn cause(&self) -> Option<&std::error::Error> {
     |                                ^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3634 |     fn cause(&self) -> Option<&dyn std::error::Error> {
     |                                +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:3723:22
     |
3723 | pub type Serialize = Value;
     |                      ^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
3723 | pub type Serialize = dyn Value;
     |                      +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:1154:24
     |
1154 |                 as Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>,
     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
1154 |                 as Arc<dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>,
     |                        +++
warning: trait objects without an explicit `dyn` are deprecated
    --> src/lib.rs:1258:24
     |
1258 |                 as Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>,
     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
     |
1258 |                 as Arc<dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>,
     |                        +++
warning: use of deprecated method `core::error::Error::description`: use the Display impl or to_string()
    --> src/lib.rs:2021:48
     |
2021 |             MutexDrainError::Drain(ref e) => e.description(),
     |                                                ^^^^^^^^^^^
warning: use of deprecated method `core::error::Error::description`: use the Display impl or to_string()
    --> src/lib.rs:3628:35
     |
3628 |             Error::Io(ref e) => e.description(),
     |                                   ^^^^^^^^^^^
warning: call to `.clone()` on a reference in this situation does nothing
    --> src/lib.rs:3085:42
     |
3085 |         s.serialize(self.record, self.key.clone(), self.serializer)
     |                                          ^^^^^^^^ help: remove this redundant call
     |
     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
     = note: `#[warn(noop_method_call)]` on by default
warning: call to `.clone()` on a reference in this situation does nothing
    --> src/lib.rs:3093:55
     |
3093 |             let _ = self.serializer.emit_unit(self.key.clone());
     |                                                       ^^^^^^^^ help: remove this redundant call
     |
     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
warning: call to `.clone()` on a reference in this situation does nothing
    --> src/lib.rs:3316:40
     |
3316 |         self.1.serialize(record, self.0.clone(), serializer)
     |                                        ^^^^^^^^ help: remove this redundant call
     |
     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
warning: `slog` (lib) generated 87 warnings (run `cargo fix --lib -p slog` to apply 50 suggestions)
   Compiling slog v2.7.0 (/builddir/build/BUILD/slog-2.7.0)
     Running `/usr/bin/rustc --crate-name struct_log_self --edition=2015 examples/struct-log-self.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values("default", "dynamic-keys", "erased-serde", "max_level_debug", "max_level_error", "max_level_info", "max_level_off", "max_level_trace", "max_level_warn", "nested-values", "nothreads", "release_max_level_debug", "release_max_level_error", "release_max_level_info", "release_max_level_off", "release_max_level_trace", "release_max_level_warn", "std"))' -C metadata=a967c8eb02438e8f -C extra-filename=-a967c8eb02438e8f --out-dir /builddir/build/BUILD/slog-2.7.0/target/rpm/examples -L dependency=/builddir/build/BUILD/slog-2.7.0/target/rpm/deps --extern slog=/builddir/build/BUILD/slog-2.7.0/target/rpm/deps/libslog-12e793f59b7bd521.rlib -Copt-level=3 -Cdebuginfo=2 -Ccodegen-units=1 -Cstrip=none --cap-lints=warn --cfg integer128`
     Running `/usr/bin/rustc --crate-name named --edition=2015 examples/named.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values("default", "dynamic-keys", "erased-serde", "max_level_debug", "max_level_error", "max_level_info", "max_level_off", "max_level_trace", "max_level_warn", "nested-values", "nothreads", "release_max_level_debug", "release_max_level_error", "release_max_level_info", "release_max_level_off", "release_max_level_trace", "release_max_level_warn", "std"))' -C metadata=9ba8598cf4e78482 -C extra-filename=-9ba8598cf4e78482 --out-dir /builddir/build/BUILD/slog-2.7.0/target/rpm/examples -L dependency=/builddir/build/BUILD/slog-2.7.0/target/rpm/deps --extern slog=/builddir/build/BUILD/slog-2.7.0/target/rpm/deps/libslog-12e793f59b7bd521.rlib -Copt-level=3 -Cdebuginfo=2 -Ccodegen-units=1 -Cstrip=none --cap-lints=warn --cfg integer128`
     Running `/usr/bin/rustc --crate-name slog --edition=2015 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values("default", "dynamic-keys", "erased-serde", "max_level_debug", "max_level_error", "max_level_info", "max_level_off", "max_level_trace", "max_level_warn", "nested-values", "nothreads", "release_max_level_debug", "release_max_level_error", "release_max_level_info", "release_max_level_off", "release_max_level_trace", "release_max_level_warn", "std"))' -C metadata=bfa993c4b3508ffd -C extra-filename=-bfa993c4b3508ffd --out-dir /builddir/build/BUILD/slog-2.7.0/target/rpm/deps -L dependency=/builddir/build/BUILD/slog-2.7.0/target/rpm/deps -Copt-level=3 -Cdebuginfo=2 -Ccodegen-units=1 -Cstrip=none --cap-lints=warn --cfg integer128`
warning: unused `#[macro_use]` import
 --> examples/struct-log-self.rs:3:1
  |
3 | #[macro_use]
  | ^^^^^^^^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default
warning: trait objects without an explicit `dyn` are deprecated
  --> examples/struct-log-self.rs:25:60
   |
25 |     fn serialize(&self, _record: &Record, serializer: &mut Serializer) -> Result {
   |                                                            ^^^^^^^^^^
   |
   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
   = note: `#[warn(bare_trait_objects)]` on by default
help: if this is an object-safe trait, use `dyn`
   |
25 |     fn serialize(&self, _record: &Record, serializer: &mut dyn Serializer) -> Result {
   |                                                            +++
warning: unexpected `cfg` condition name: `integer128`
   --> src/tests.rs:275:7
    |
275 | #[cfg(integer128)]
    |       ^^^^^^^^^^
    |
    = help: consider using a Cargo feature instead
    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
             [lints.rust]
             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(integer128)'] }
    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(integer128)");` to the top of the `build.rs`
    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
warning: unused import: `core::cell::Cell`
   --> src/tests.rs:298:9
    |
298 |     use core::cell::Cell;
    |         ^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(unused_imports)]` on by default
warning: trait objects without an explicit `dyn` are deprecated
  --> src/tests.rs:73:36
   |
73 |         fn cause(&self) -> Option<&std::error::Error> {
   |                                    ^^^^^^^^^^^^^^^^^
   |
   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
   |
73 |         fn cause(&self) -> Option<&dyn std::error::Error> {
   |                                    +++
warning: trait objects without an explicit `dyn` are deprecated
   --> src/tests.rs:248:35
    |
248 |                 _serializer: &mut Serializer,
    |                                   ^^^^^^^^^^
    |
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
help: if this is an object-safe trait, use `dyn`
    |
248 |                 _serializer: &mut dyn Serializer,
    |                                   +++
warning: unreachable statement
   --> src/tests.rs:408:9
    |
407 |         let x: Never = panic!("Can't actually construct a Never type here!");
    |                        ----------------------------------------------------- any code following this expression is unreachable
408 |         let y = x.clone();
    |         ^^^^^^^^^^^^^^^^^^ unreachable statement
    |
    = note: `#[warn(unreachable_code)]` on by default
warning: unused variable: `values`
   --> src/tests.rs:319:40
    |
319 |         fn log(&self, record: &Record, values: &OwnedKVList) -> Result<(), Never> {
    |                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values`
    |
    = note: `#[warn(unused_variables)]` on by default
warning: unused variable: `x`
   --> src/tests.rs:407:13
    |
407 |         let x: Never = panic!("Can't actually construct a Never type here!");
    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
warning: unused variable: `y`
   --> src/tests.rs:408:13
    |
408 |         let y = x.clone();
    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
warning: unused variable: `tab`
   --> src/tests.rs:418:9
    |
418 |     let tab: HashSet<Key> = ["foo"].iter().map(|&k| k.into()).collect();
    |         ^^^ help: if this is intentional, prefix it with an underscore: `_tab`
warning: unused arithmetic operation that must be used
   --> src/tests.rs:269:13
    |
269 |           { 3 + 3; 2};
    |             ^^^^^ the arithmetic operation produces a value
    |
    = note: `#[warn(unused_must_use)]` on by default
help: use `let _ = ...` to ignore the resulting value
    |
269 |           { let _ = 3 + 3; 2};
    |             +++++++
warning: unused arithmetic operation that must be used
   --> src/tests.rs:271:22
    |
271 |           "foo" => { 3 + 3; 2},
    |                      ^^^^^ the arithmetic operation produces a value
    |
help: use `let _ = ...` to ignore the resulting value
    |
271 |           "foo" => { let _ = 3 + 3; 2},
    |                      +++++++
warning: `slog` (example "struct-log-self") generated 2 warnings (run `cargo fix --example "struct-log-self"` to apply 1 suggestion)
warning: `slog` (lib test) generated 98 warnings (87 duplicates) (run `cargo fix --lib -p slog --tests` to apply 3 suggestions)
    Finished `rpm` profile [optimized + debuginfo] target(s) in 2.66s
     Running `/builddir/build/BUILD/slog-2.7.0/target/rpm/deps/slog-bfa993c4b3508ffd`
running 25 tests
test filter_level_accepts_tests ... ok
test filter_level_to_string_and_from_str_are_compatible ... ok
test filter_level_sanity ... ok
test filter_level_from_str ... ok
test level_at_least ... ok
test level_from_str ... ok
test level_to_string_and_from_str_are_compatible ... ok
test tests::can_hash_keys ... ok
test tests::display_and_alternate_display ... ok
test tests::expressions ... ok
test tests::expressions_fmt ... ok
test tests::integer_128_types ... ok
test tests::logger_by_ref ... ok
test tests::logger_to_erased ... ok
test tests::makers ... ok
test tests::no_imports::test_o_macro_expansion ... ok
test tests::no_imports::test_slog_o_macro_expansion ... ok
test tests::simple_logger_erased ... ok
test tests::std_only::error_fmt_no_source ... ok
test tests::std_only::error_fmt_single_source ... ok
test tests::std_only::error_fmt_two_sources ... ok
test tests::std_only::ioerror_impls_value ... ok
test tests::std_only::logger_fmt_debug_sanity ... ok
test tests::std_only::multichain ... ok
test tests::test_never_type_clone ... ok
test result: ok. 25 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
   Doc-tests slog
     Running `/usr/bin/rustdoc --edition=2015 --crate-type lib --color auto --crate-name slog --test src/lib.rs --test-run-directory /builddir/build/BUILD/slog-2.7.0 -L dependency=/builddir/build/BUILD/slog-2.7.0/target/rpm/deps -L dependency=/builddir/build/BUILD/slog-2.7.0/target/rpm/deps --extern slog=/builddir/build/BUILD/slog-2.7.0/target/rpm/deps/libslog-12e793f59b7bd521.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values("default", "dynamic-keys", "erased-serde", "max_level_debug", "max_level_error", "max_level_info", "max_level_off", "max_level_trace", "max_level_warn", "nested-values", "nothreads", "release_max_level_debug", "release_max_level_error", "release_max_level_info", "release_max_level_off", "release_max_level_trace", "release_max_level_warn", "std"))' --cfg integer128 --error-format human`
running 23 tests
test src/lib.rs - (line 115) ... ignored
test src/lib.rs - (line 134) ... ignored
test src/lib.rs - (line 167) ... ignored
test src/lib.rs - (line 278) ... ignored
test src/lib.rs - KV (line 3199) ... ignored
test src/lib.rs - KV (line 3205) ... ignored
test src/lib.rs - KV (line 3222) ... ok
test src/lib.rs - Drain::map (line 1431) ... ok
test src/lib.rs - Value (line 2818) ... ok
test src/lib.rs - log (line 635) ... ok
test src/lib.rs - (line 261) ... ok
test src/lib.rs - Logger<D>::new (line 1206) ... ok
test src/lib.rs - Logger<D>::root (line 1136) ... ok
test src/lib.rs - log (line 583) ... ok
test src/lib.rs - log (line 599) ... ok
test src/lib.rs - Drain::is_enabled (line 1374) ... ok
test src/lib.rs - log (line 614) ... ok
test src/lib.rs - PushFnValue (line 3111) ... ok
test src/lib.rs - log (line 656) ... ok
test src/lib.rs - log (line 684) ... ok
test src/lib.rs - o (line 344) ... ok
test src/lib.rs - slog_log (line 815) ... ok
test src/lib.rs - log (line 736) ... ok
test result: ok. 17 passed; 0 failed; 6 ignored; 0 measured; 0 filtered out; finished in 0.56s
+ RPM_EC=0
++ jobs -p
+ exit 0
Processing files: rust-slog-devel-2.7.0-8.el9.next.noarch
warning: File listed twice: /usr/share/cargo/registry/slog-2.7.0/CHANGELOG.md
warning: File listed twice: /usr/share/cargo/registry/slog-2.7.0/LICENSE-APACHE
warning: File listed twice: /usr/share/cargo/registry/slog-2.7.0/LICENSE-MIT
warning: File listed twice: /usr/share/cargo/registry/slog-2.7.0/LICENSE-MPL2
warning: File listed twice: /usr/share/cargo/registry/slog-2.7.0/README.md
Provides: crate(slog) = 2.7.0 rust-slog-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo
Processing files: rust-slog+default-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/default) = 2.7.0 rust-slog+default-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0 crate(slog/std) = 2.7.0
Processing files: rust-slog+dynamic-keys-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/dynamic-keys) = 2.7.0 rust-slog+dynamic-keys-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+erased-serde-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/erased-serde) = 2.7.0 rust-slog+erased-serde-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: (crate(erased-serde/default) >= 0.3.0 with crate(erased-serde/default) < 0.4.0~) cargo crate(slog) = 2.7.0
Processing files: rust-slog+max_level_debug-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/max_level_debug) = 2.7.0 rust-slog+max_level_debug-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+max_level_error-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/max_level_error) = 2.7.0 rust-slog+max_level_error-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+max_level_info-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/max_level_info) = 2.7.0 rust-slog+max_level_info-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+max_level_off-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/max_level_off) = 2.7.0 rust-slog+max_level_off-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+max_level_trace-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/max_level_trace) = 2.7.0 rust-slog+max_level_trace-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+max_level_warn-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/max_level_warn) = 2.7.0 rust-slog+max_level_warn-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+nested-values-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/nested-values) = 2.7.0 rust-slog+nested-values-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0 crate(slog/erased-serde) = 2.7.0
Processing files: rust-slog+nothreads-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/nothreads) = 2.7.0 rust-slog+nothreads-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+release_max_level_debug-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/release_max_level_debug) = 2.7.0 rust-slog+release_max_level_debug-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+release_max_level_error-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/release_max_level_error) = 2.7.0 rust-slog+release_max_level_error-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+release_max_level_info-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/release_max_level_info) = 2.7.0 rust-slog+release_max_level_info-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+release_max_level_off-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/release_max_level_off) = 2.7.0 rust-slog+release_max_level_off-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+release_max_level_trace-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/release_max_level_trace) = 2.7.0 rust-slog+release_max_level_trace-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+release_max_level_warn-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/release_max_level_warn) = 2.7.0 rust-slog+release_max_level_warn-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Processing files: rust-slog+std-devel-2.7.0-8.el9.next.noarch
Provides: crate(slog/std) = 2.7.0 rust-slog+std-devel = 2.7.0-8.el9.next
Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
Requires: cargo crate(slog) = 2.7.0
Checking for unpackaged file(s): /usr/lib/rpm/check-files /builddir/build/BUILDROOT/rust-slog-2.7.0-8.el9.next.aarch64
Wrote: /builddir/build/SRPMS/rust-slog-2.7.0-8.el9.next.src.rpm
Wrote: /builddir/build/RPMS/rust-slog+max_level_error-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+max_level_warn-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+max_level_trace-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+max_level_off-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+dynamic-keys-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+max_level_info-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+nothreads-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+erased-serde-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+default-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+max_level_debug-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+nested-values-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+release_max_level_debug-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+release_max_level_trace-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+release_max_level_error-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+release_max_level_info-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+release_max_level_off-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+release_max_level_warn-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog+std-devel-2.7.0-8.el9.next.noarch.rpm
Wrote: /builddir/build/RPMS/rust-slog-devel-2.7.0-8.el9.next.noarch.rpm
Child return code was: 0