[INFO] fetching crate imdl 0.1.12...
[INFO] building imdl-0.1.12 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate imdl 0.1.12 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate imdl 0.1.12 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate imdl 0.1.12
[INFO] finished tweaking crates.io crate imdl 0.1.12
[INFO] tweaked toml for crates.io crate imdl 0.1.12 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate imdl 0.1.12 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tinyvec v0.3.4
[INFO] [stderr]   Downloaded globset v0.4.5
[INFO] [stderr]   Downloaded snafu v0.6.9
[INFO] [stderr]   Downloaded addr2line v0.13.0
[INFO] [stderr]   Downloaded serde_derive v1.0.116
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.9
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[INFO] [stderr]   Downloaded temptree v0.0.0
[INFO] [stderr]   Downloaded serde_with_macros v1.2.0
[INFO] [stderr]   Downloaded libc v0.2.78
[INFO] [stderr]   Downloaded backtrace v0.3.51
[INFO] [stderr]   Downloaded serde_with v1.5.0
[INFO] [stderr]   Downloaded term_size v0.3.2
[INFO] [stderr]   Downloaded structopt-derive v0.4.11
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[INFO] [stderr]   Downloaded array-init v0.0.4
[INFO] [stderr]   Downloaded serde_bytes v0.11.5
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[INFO] [stderr]   Downloaded ctor v0.1.16
[INFO] [stderr]   Downloaded gimli v0.22.0
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[INFO] [stderr]   Downloaded serde v1.0.116
[INFO] [stderr]   Downloaded structopt v0.3.18
[INFO] [stderr]   Downloaded bstr v0.2.13
[INFO] [stderr]   Downloaded sha1 v0.6.0
[INFO] [stderr]   Downloaded rayon v1.4.1
[INFO] [stderr]   Downloaded object v0.20.0
[INFO] [stderr]   Downloaded output_vt100 v0.1.2
[INFO] [stderr]   Downloaded pretty_assertions v0.6.1
[INFO] [stderr]   Downloaded serde_json v1.0.58
[INFO] [stderr]   Downloaded pretty_env_logger v0.4.0
[INFO] [stderr]   Downloaded bendy v0.3.2
[INFO] [stderr]   Downloaded rayon-core v1.8.1
[INFO] [stderr]   Downloaded imdl-indicatif v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d810aebdf876af0eb55397c6f0e30dd0f88be6b5a80eafd38b759fdc32c061cf
[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" "d810aebdf876af0eb55397c6f0e30dd0f88be6b5a80eafd38b759fdc32c061cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d810aebdf876af0eb55397c6f0e30dd0f88be6b5a80eafd38b759fdc32c061cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d810aebdf876af0eb55397c6f0e30dd0f88be6b5a80eafd38b759fdc32c061cf", kill_on_drop: false }`
[INFO] [stdout] d810aebdf876af0eb55397c6f0e30dd0f88be6b5a80eafd38b759fdc32c061cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52a1fd871a9830ad5639f59153c782ba71e85a8ec53a760bc5a31f22a7c6c5f1
[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" "52a1fd871a9830ad5639f59153c782ba71e85a8ec53a760bc5a31f22a7c6c5f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling libc v0.2.78
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling serde_json v1.0.58
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling number_prefix v0.3.0
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling imdl v0.1.12 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling lexiclean v0.0.1
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling strum v0.19.2
[INFO] [stderr]    Compiling open v1.4.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling array-init v0.0.4
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]    Compiling pretty_assertions v0.6.1
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling termios v0.3.2
[INFO] [stderr]    Compiling terminal_size v0.1.13
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling backtrace v0.3.51
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling console v0.12.0
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling imdl-indicatif v0.14.0
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.11
[INFO] [stderr]    Compiling snafu-derive v0.6.9
[INFO] [stderr]    Compiling strum_macros v0.19.2
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling serde_with_macros v1.2.0
[INFO] [stderr]    Compiling snafu v0.6.9
[INFO] [stderr]    Compiling structopt v0.3.18
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling serde_bytes v0.11.5
[INFO] [stderr]    Compiling serde-hex v0.1.0
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling serde_with v1.5.0
[INFO] [stderr]    Compiling bendy v0.3.2
[INFO] [stderr]    Compiling globset v0.4.5
[INFO] [stderr]    Compiling ignore v0.4.16
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/bytes.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[serde(transparent)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 11 | #[derive(Debug, PartialEq, Copy, Clone, PartialOrd, Ord, Eq, Serialize, Deserialize, Default)]
[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/file_path.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[serde(transparent)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 4 | #[derive(Deserialize, Serialize, Debug, PartialEq, Clone, Ord, PartialOrd, Eq)]
[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/md5_digest.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[serde(transparent)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 4 | #[derive(Deserialize, Serialize, Debug, Eq, PartialEq, Copy, Clone)]
[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/mode.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[serde(untagged)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 4 | #[derive(Deserialize, Serialize, Debug, PartialEq, Clone)]
[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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `Command { std: "docker" "inspect" "52a1fd871a9830ad5639f59153c782ba71e85a8ec53a760bc5a31f22a7c6c5f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52a1fd871a9830ad5639f59153c782ba71e85a8ec53a760bc5a31f22a7c6c5f1", kill_on_drop: false }`
[INFO] [stdout] 52a1fd871a9830ad5639f59153c782ba71e85a8ec53a760bc5a31f22a7c6c5f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26c41ffb675347864a10bcdfce14c496657799dd6f4d3f81a3b603bcfda4c6a4
[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" "26c41ffb675347864a10bcdfce14c496657799dd6f4d3f81a3b603bcfda4c6a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling rayon-core v1.8.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling half v1.6.0
[INFO] [stderr]    Compiling oorandom v11.1.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rayon v1.4.1
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling plotters v0.2.15
[INFO] [stderr]    Compiling tinytemplate v1.1.0
[INFO] [stderr]    Compiling temptree v0.0.0
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/bytes.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[serde(transparent)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 11 | #[derive(Debug, PartialEq, Copy, Clone, PartialOrd, Ord, Eq, Serialize, Deserialize, Default)]
[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/file_path.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[serde(transparent)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 4 | #[derive(Deserialize, Serialize, Debug, PartialEq, Clone, Ord, PartialOrd, Eq)]
[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/md5_digest.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[serde(transparent)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 4 | #[derive(Deserialize, Serialize, Debug, Eq, PartialEq, Copy, Clone)]
[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/mode.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[serde(untagged)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 4 | #[derive(Deserialize, Serialize, Debug, PartialEq, Clone)]
[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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling imdl v0.1.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/bytes.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[serde(transparent)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 11 | #[derive(Debug, PartialEq, Copy, Clone, PartialOrd, Ord, Eq, Serialize, Deserialize, Default)]
[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/file_path.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[serde(transparent)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 4 | #[derive(Deserialize, Serialize, Debug, PartialEq, Clone, Ord, PartialOrd, Eq)]
[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/md5_digest.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[serde(transparent)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 4 | #[derive(Deserialize, Serialize, Debug, Eq, PartialEq, Copy, Clone)]
[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/mode.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[serde(untagged)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 4 | #[derive(Deserialize, Serialize, Debug, PartialEq, Clone)]
[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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 30.92s
[INFO] running `Command { std: "docker" "inspect" "26c41ffb675347864a10bcdfce14c496657799dd6f4d3f81a3b603bcfda4c6a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26c41ffb675347864a10bcdfce14c496657799dd6f4d3f81a3b603bcfda4c6a4", kill_on_drop: false }`
[INFO] [stdout] 26c41ffb675347864a10bcdfce14c496657799dd6f4d3f81a3b603bcfda4c6a4
