[INFO] crate auto_enums_core 0.7.1 is already in cache
[INFO] checking auto_enums_core-0.7.1 against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[INFO] extracting crate auto_enums_core 0.7.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate auto_enums_core 0.7.1 on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate auto_enums_core 0.7.1
[INFO] finished tweaking crates.io crate auto_enums_core 0.7.1
[INFO] tweaked toml for crates.io crate auto_enums_core 0.7.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a4e204f3485cc08be16ebf8260d7c97ed5c2bbab45b723b34198c1c483cac79a
[INFO] running `"docker" "start" "-a" "a4e204f3485cc08be16ebf8260d7c97ed5c2bbab45b723b34198c1c483cac79a"`
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking auto_enums_core v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused extern crate
[INFO] [stderr]   --> src/lib.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | extern crate proc_macro;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove it
[INFO] [stderr]    |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]   --> src/lib.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 | #![warn(rust_2018_idioms, unreachable_pub)]
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[warn(unused_extern_crates)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stderr] 
[INFO] [stderr] warning: unused extern crate
[INFO] [stderr]   --> src/lib.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | extern crate proc_macro;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove it
[INFO] [stderr]    |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]   --> src/lib.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 | #![warn(rust_2018_idioms, unreachable_pub)]
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[warn(unused_extern_crates)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.49s
[INFO] running `"docker" "inspect" "a4e204f3485cc08be16ebf8260d7c97ed5c2bbab45b723b34198c1c483cac79a"`
[INFO] running `"docker" "rm" "-f" "a4e204f3485cc08be16ebf8260d7c97ed5c2bbab45b723b34198c1c483cac79a"`
[INFO] [stdout] a4e204f3485cc08be16ebf8260d7c97ed5c2bbab45b723b34198c1c483cac79a