[INFO] fetching crate log4rs 1.0.0...
[INFO] checking log4rs-1.0.0 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate log4rs 1.0.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate log4rs 1.0.0 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "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-12/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" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae6356dc6af92ed91ff9c82e76de65496b3ba72e10d9c030a92f8114d7840e69
[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" "ae6356dc6af92ed91ff9c82e76de65496b3ba72e10d9c030a92f8114d7840e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae6356dc6af92ed91ff9c82e76de65496b3ba72e10d9c030a92f8114d7840e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae6356dc6af92ed91ff9c82e76de65496b3ba72e10d9c030a92f8114d7840e69", kill_on_drop: false }`
[INFO] [stdout] ae6356dc6af92ed91ff9c82e76de65496b3ba72e10d9c030a92f8114d7840e69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93449ebdf2a16c8e93148d8a3fd45da7cc3c96395b7ffb889df2e4397fd2c4ee
[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" "93449ebdf2a16c8e93148d8a3fd45da7cc3c96395b7ffb889df2e4397fd2c4ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking instant v0.1.6
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking num-integer v0.1.43
[INFO] [stderr]     Checking ordered-float v2.0.0
[INFO] [stderr]     Checking streaming-stats v0.2.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stderr]     Checking tempfile v3.1.0
[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]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking serde v1.0.114
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking serde_json v1.0.56
[INFO] [stderr]     Checking 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: 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] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.54s
[INFO] running `Command { std: "docker" "inspect" "93449ebdf2a16c8e93148d8a3fd45da7cc3c96395b7ffb889df2e4397fd2c4ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93449ebdf2a16c8e93148d8a3fd45da7cc3c96395b7ffb889df2e4397fd2c4ee", kill_on_drop: false }`
[INFO] [stdout] 93449ebdf2a16c8e93148d8a3fd45da7cc3c96395b7ffb889df2e4397fd2c4ee
