[INFO] crate flat_map 0.0.8 is already in cache
[INFO] checking flat_map-0.0.8 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] extracting crate flat_map 0.0.8 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate flat_map 0.0.8 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate flat_map 0.0.8
[INFO] finished tweaking crates.io crate flat_map 0.0.8
[INFO] tweaked toml for crates.io crate flat_map 0.0.8 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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] eb618e3fc0c61fbf7d2add52ad824a81d58bdeac257415b3af76a04293372d14
[INFO] running `"docker" "start" "-a" "eb618e3fc0c61fbf7d2add52ad824a81d58bdeac257415b3af76a04293372d14"`
[INFO] [stderr]     Checking flat_map v0.0.8 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/flat_map.rs:450:34
[INFO] [stderr]     |
[INFO] [stderr] 450 |     fn next(&mut self) -> Option<(&'a K)> {
[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/flat_map.rs:459:39
[INFO] [stderr]     |
[INFO] [stderr] 459 |     fn next_back(&mut self) -> Option<(&'a K)> {
[INFO] [stderr]     |                                       ^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/flat_map.rs:477:34
[INFO] [stderr]     |
[INFO] [stderr] 477 |     fn next(&mut self) -> Option<(&'a V)> {
[INFO] [stderr]     |                                  ^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/flat_map.rs:486:39
[INFO] [stderr]     |
[INFO] [stderr] 486 |     fn next_back(&mut self) -> Option<(&'a V)> {
[INFO] [stderr]     |                                       ^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/flat_map.rs:450:34
[INFO] [stderr]     |
[INFO] [stderr] 450 |     fn next(&mut self) -> Option<(&'a K)> {
[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/flat_map.rs:459:39
[INFO] [stderr]     |
[INFO] [stderr] 459 |     fn next_back(&mut self) -> Option<(&'a K)> {
[INFO] [stderr]     |                                       ^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/flat_map.rs:477:34
[INFO] [stderr]     |
[INFO] [stderr] 477 |     fn next(&mut self) -> Option<(&'a V)> {
[INFO] [stderr]     |                                  ^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/flat_map.rs:486:39
[INFO] [stderr]     |
[INFO] [stderr] 486 |     fn next_back(&mut self) -> Option<(&'a V)> {
[INFO] [stderr]     |                                       ^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `"docker" "inspect" "eb618e3fc0c61fbf7d2add52ad824a81d58bdeac257415b3af76a04293372d14"`
[INFO] running `"docker" "rm" "-f" "eb618e3fc0c61fbf7d2add52ad824a81d58bdeac257415b3af76a04293372d14"`
[INFO] [stdout] eb618e3fc0c61fbf7d2add52ad824a81d58bdeac257415b3af76a04293372d14