[INFO] fetching crate log4rs 1.0.0...
[INFO] building log4rs-1.0.0 against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] extracting crate log4rs 1.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate log4rs 1.0.0 on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate log4rs 1.0.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate log4rs 1.0.0
[INFO] tweaked toml for crates.io crate log4rs 1.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate log4rs 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b96a0343511fc3e0c05cca0602a254941d830f426e2cc86e00c97354213c3697
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b96a0343511fc3e0c05cca0602a254941d830f426e2cc86e00c97354213c3697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b96a0343511fc3e0c05cca0602a254941d830f426e2cc86e00c97354213c3697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b96a0343511fc3e0c05cca0602a254941d830f426e2cc86e00c97354213c3697", kill_on_drop: false }`
[INFO] [stdout] b96a0343511fc3e0c05cca0602a254941d830f426e2cc86e00c97354213c3697
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 756c7f489e5964431ba168279de6db7361d7e71addb6c3adecf99297bd580902
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "756c7f489e5964431ba168279de6db7361d7e71addb6c3adecf99297bd580902", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling smallvec v1.4.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling instant v0.1.6
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling ordered-float v2.0.0
[INFO] [stderr]    Compiling lock_api v0.4.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling parking_lot_core v0.8.0
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling parking_lot v0.11.0
[INFO] [stderr]    Compiling chrono v0.4.13
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling thiserror v1.0.20
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]    Compiling serde-value v0.7.0
[INFO] [stderr]    Compiling serde_yaml v0.8.13
[INFO] [stderr]    Compiling log4rs v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/console.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 33 | #[derive(Debug, serde::Deserialize)]
[INFO] [stdout]    |                 ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/file.rs:26:3
[INFO] [stdout]    |
[INFO] [stdout] 26 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 27 | #[derive(Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]    |                                                      ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/policy/compound/roll/delete.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 14 | #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]    |                                                            ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/policy/compound/roll/fixed_window.rs:21:3
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 22 | #[derive(Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]    |                                                      ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/policy/compound/trigger/size.rs:17:3
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 18 | #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]    |                                                            ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/policy/compound/mod.rs:23:3
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 24 | #[derive(Clone, Eq, PartialEq, Hash, Debug, serde::Deserialize)]
[INFO] [stdout]    |                                             ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/mod.rs:47:3
[INFO] [stdout]    |
[INFO] [stdout] 47 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 48 | #[derive(Clone, Eq, PartialEq, Hash, Debug, serde::Deserialize)]
[INFO] [stdout]    |                                             ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]    --> src/config/raw.rs:308:3
[INFO] [stdout]     |
[INFO] [stdout] 308 | #[serde(deny_unknown_fields)]
[INFO] [stdout]     |   ^^^^^
[INFO] [stdout] 309 | #[derive(Clone, Debug, Default, serde::Deserialize)]
[INFO] [stdout]     |                                 ------------------ the attribute is introduced here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]    --> src/encode/pattern/mod.rs:139:3
[INFO] [stdout]     |
[INFO] [stdout] 139 | #[serde(deny_unknown_fields)]
[INFO] [stdout]     |   ^^^^^
[INFO] [stdout] 140 | #[derive(Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]     |                                                      ------------------ the attribute is introduced here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.60s
[INFO] running `Command { std: "docker" "inspect" "756c7f489e5964431ba168279de6db7361d7e71addb6c3adecf99297bd580902", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "756c7f489e5964431ba168279de6db7361d7e71addb6c3adecf99297bd580902", kill_on_drop: false }`
[INFO] [stdout] 756c7f489e5964431ba168279de6db7361d7e71addb6c3adecf99297bd580902
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c79434781eff41e16b897a760cae82dadd1c67a53296ff322b56d6d3a2dfe725
[INFO] running `Command { std: "docker" "start" "-a" "c79434781eff41e16b897a760cae82dadd1c67a53296ff322b56d6d3a2dfe725", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling streaming-stats v0.2.3
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/console.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 33 | #[derive(Debug, serde::Deserialize)]
[INFO] [stdout]    |                 ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/file.rs:26:3
[INFO] [stdout]    |
[INFO] [stdout] 26 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 27 | #[derive(Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]    |                                                      ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/policy/compound/roll/delete.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 14 | #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]    |                                                            ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/policy/compound/roll/fixed_window.rs:21:3
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 22 | #[derive(Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]    |                                                      ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/policy/compound/trigger/size.rs:17:3
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 18 | #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]    |                                                            ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/policy/compound/mod.rs:23:3
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 24 | #[derive(Clone, Eq, PartialEq, Hash, Debug, serde::Deserialize)]
[INFO] [stdout]    |                                             ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/mod.rs:47:3
[INFO] [stdout]    |
[INFO] [stdout] 47 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 48 | #[derive(Clone, Eq, PartialEq, Hash, Debug, serde::Deserialize)]
[INFO] [stdout]    |                                             ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]    --> src/config/raw.rs:308:3
[INFO] [stdout]     |
[INFO] [stdout] 308 | #[serde(deny_unknown_fields)]
[INFO] [stdout]     |   ^^^^^
[INFO] [stdout] 309 | #[derive(Clone, Debug, Default, serde::Deserialize)]
[INFO] [stdout]     |                                 ------------------ the attribute is introduced here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]    --> src/encode/pattern/mod.rs:139:3
[INFO] [stdout]     |
[INFO] [stdout] 139 | #[serde(deny_unknown_fields)]
[INFO] [stdout]     |   ^^^^^
[INFO] [stdout] 140 | #[derive(Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]     |                                                      ------------------ the attribute is introduced here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling log4rs v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/console.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 33 | #[derive(Debug, serde::Deserialize)]
[INFO] [stdout]    |                 ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/file.rs:26:3
[INFO] [stdout]    |
[INFO] [stdout] 26 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 27 | #[derive(Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]    |                                                      ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/policy/compound/roll/delete.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 14 | #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]    |                                                            ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/policy/compound/roll/fixed_window.rs:21:3
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 22 | #[derive(Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]    |                                                      ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/policy/compound/trigger/size.rs:17:3
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 18 | #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]    |                                                            ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/policy/compound/mod.rs:23:3
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 24 | #[derive(Clone, Eq, PartialEq, Hash, Debug, serde::Deserialize)]
[INFO] [stdout]    |                                             ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/append/rolling_file/mod.rs:47:3
[INFO] [stdout]    |
[INFO] [stdout] 47 | #[serde(deny_unknown_fields)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 48 | #[derive(Clone, Eq, PartialEq, Hash, Debug, serde::Deserialize)]
[INFO] [stdout]    |                                             ------------------ the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]    --> src/config/raw.rs:308:3
[INFO] [stdout]     |
[INFO] [stdout] 308 | #[serde(deny_unknown_fields)]
[INFO] [stdout]     |   ^^^^^
[INFO] [stdout] 309 | #[derive(Clone, Debug, Default, serde::Deserialize)]
[INFO] [stdout]     |                                 ------------------ the attribute is introduced here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]    --> src/encode/pattern/mod.rs:139:3
[INFO] [stdout]     |
[INFO] [stdout] 139 | #[serde(deny_unknown_fields)]
[INFO] [stdout]     |   ^^^^^
[INFO] [stdout] 140 | #[derive(Clone, Eq, PartialEq, Hash, Debug, Default, serde::Deserialize)]
[INFO] [stdout]     |                                                      ------------------ the attribute is introduced here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 13.04s
[INFO] running `Command { std: "docker" "inspect" "c79434781eff41e16b897a760cae82dadd1c67a53296ff322b56d6d3a2dfe725", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c79434781eff41e16b897a760cae82dadd1c67a53296ff322b56d6d3a2dfe725", kill_on_drop: false }`
[INFO] [stdout] c79434781eff41e16b897a760cae82dadd1c67a53296ff322b56d6d3a2dfe725
