[INFO] crate non-empty-collections 0.1.9 is already in cache
[INFO] checking non-empty-collections-0.1.9 against master#0a675c5e02e6ecfda7d4e04aabd23a9935e0c4bf for pr-71814
[INFO] extracting crate non-empty-collections 0.1.9 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate non-empty-collections 0.1.9 on toolchain 0a675c5e02e6ecfda7d4e04aabd23a9935e0c4bf
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0a675c5e02e6ecfda7d4e04aabd23a9935e0c4bf" "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-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0a675c5e02e6ecfda7d4e04aabd23a9935e0c4bf" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0a675c5e02e6ecfda7d4e04aabd23a9935e0c4bf" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+0a675c5e02e6ecfda7d4e04aabd23a9935e0c4bf" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 306d4677a1fcf1981958d60386aaa01e66889532665a0c3e9e069ddb02e4db33
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "306d4677a1fcf1981958d60386aaa01e66889532665a0c3e9e069ddb02e4db33"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling indexmap v1.3.2
[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] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.26s
[INFO] running `"docker" "inspect" "306d4677a1fcf1981958d60386aaa01e66889532665a0c3e9e069ddb02e4db33"`
[INFO] running `"docker" "rm" "-f" "306d4677a1fcf1981958d60386aaa01e66889532665a0c3e9e069ddb02e4db33"`
[INFO] [stdout] 306d4677a1fcf1981958d60386aaa01e66889532665a0c3e9e069ddb02e4db33