[INFO] fetching crate atomic_enum 0.1.1...
[INFO] checking atomic_enum-0.1.1 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate atomic_enum 0.1.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate atomic_enum 0.1.1 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate atomic_enum 0.1.1
[INFO] finished tweaking crates.io crate atomic_enum 0.1.1
[INFO] tweaked toml for crates.io crate atomic_enum 0.1.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07e70f0a6380f011bce2f0503da1e1e8fe199f3c8df456e50c94fbc8bc357412
[INFO] running `Command { std: "docker" "start" "-a" "07e70f0a6380f011bce2f0503da1e1e8fe199f3c8df456e50c94fbc8bc357412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07e70f0a6380f011bce2f0503da1e1e8fe199f3c8df456e50c94fbc8bc357412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07e70f0a6380f011bce2f0503da1e1e8fe199f3c8df456e50c94fbc8bc357412", kill_on_drop: false }`
[INFO] [stdout] 07e70f0a6380f011bce2f0503da1e1e8fe199f3c8df456e50c94fbc8bc357412
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19fab33a5a5051faf83df9e43ed42ff6dffda2be5a5d712d7a728328ec63ec2f
[INFO] running `Command { std: "docker" "start" "-a" "19fab33a5a5051faf83df9e43ed42ff6dffda2be5a5d712d7a728328ec63ec2f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]     Checking proc-macro2 v1.0.29
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking atomic_enum v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: warn(unused_extern_crates) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 2  |     rust_2018_idioms,
[INFO] [stdout]    |     ---------------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 13 |     unused_extern_crates,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(forbidden_lint_groups)]` 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 #81670 <https://github.com/rust-lang/rust/issues/81670>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: warn(unused_extern_crates) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 2  |     rust_2018_idioms,
[INFO] [stdout]    |     ---------------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 13 |     unused_extern_crates,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(forbidden_lint_groups)]` 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 #81670 <https://github.com/rust-lang/rust/issues/81670>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused extern crate
[INFO] [stdout]   --> src/lib.rs:45:1
[INFO] [stdout]    |
[INFO] [stdout] 45 | extern crate proc_macro;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove it
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     unused_extern_crates,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused extern crate
[INFO] [stdout]   --> src/lib.rs:45:1
[INFO] [stdout]    |
[INFO] [stdout] 45 | extern crate proc_macro;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove it
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     unused_extern_crates,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.50s
[INFO] running `Command { std: "docker" "inspect" "19fab33a5a5051faf83df9e43ed42ff6dffda2be5a5d712d7a728328ec63ec2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19fab33a5a5051faf83df9e43ed42ff6dffda2be5a5d712d7a728328ec63ec2f", kill_on_drop: false }`
[INFO] [stdout] 19fab33a5a5051faf83df9e43ed42ff6dffda2be5a5d712d7a728328ec63ec2f