[INFO] crate non-empty-collections 0.1.9 is already in cache
[INFO] checking non-empty-collections-0.1.9 against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[INFO] extracting crate non-empty-collections 0.1.9 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate non-empty-collections 0.1.9 on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate non-empty-collections 0.1.9
[INFO] finished tweaking crates.io crate non-empty-collections 0.1.9
[INFO] tweaked toml for crates.io crate non-empty-collections 0.1.9 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] 334a321870b58ba39953913e862f0994f6969e28a91cb55a989715783942e396
[INFO] running `"docker" "start" "-a" "334a321870b58ba39953913e862f0994f6969e28a91cb55a989715783942e396"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking non-empty-collections v0.1.9 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/index_set/mod.rs:272:19
[INFO] [stderr]     |
[INFO] [stderr] 272 | impl<K, S> Extend<(K)> for NonEmptyIndexSet<K, S>
[INFO] [stderr]     |                   ^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/index_set/mod.rs:272:19
[INFO] [stderr]     |
[INFO] [stderr] 272 | impl<K, S> Extend<(K)> for NonEmptyIndexSet<K, S>
[INFO] [stderr]     |                   ^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `"docker" "inspect" "334a321870b58ba39953913e862f0994f6969e28a91cb55a989715783942e396"`
[INFO] running `"docker" "rm" "-f" "334a321870b58ba39953913e862f0994f6969e28a91cb55a989715783942e396"`
[INFO] [stdout] 334a321870b58ba39953913e862f0994f6969e28a91cb55a989715783942e396