[INFO] crate derive-com-wrapper 0.1.0-alpha4 is already in cache
[INFO] extracting crate derive-com-wrapper 0.1.0-alpha4 into work/ex/clippy-test-run/sources/stable/reg/derive-com-wrapper/0.1.0-alpha4
[INFO] extracting crate derive-com-wrapper 0.1.0-alpha4 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/derive-com-wrapper/0.1.0-alpha4
[INFO] validating manifest of derive-com-wrapper-0.1.0-alpha4 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of derive-com-wrapper-0.1.0-alpha4 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing derive-com-wrapper-0.1.0-alpha4
[INFO] finished frobbing derive-com-wrapper-0.1.0-alpha4
[INFO] frobbed toml for derive-com-wrapper-0.1.0-alpha4 written to work/ex/clippy-test-run/sources/stable/reg/derive-com-wrapper/0.1.0-alpha4/Cargo.toml
[INFO] started frobbing derive-com-wrapper-0.1.0-alpha4
[INFO] finished frobbing derive-com-wrapper-0.1.0-alpha4
[INFO] frobbed toml for derive-com-wrapper-0.1.0-alpha4 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/derive-com-wrapper/0.1.0-alpha4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting derive-com-wrapper-0.1.0-alpha4 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/derive-com-wrapper/0.1.0-alpha4:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4278127c3fb64c88ec3723d7347e2ba5fcdc3cb6f328aa8260bc95a087e5e804
[INFO] running `"docker" "start" "-a" "4278127c3fb64c88ec3723d7347e2ba5fcdc3cb6f328aa8260bc95a087e5e804"`
[INFO] [stderr]     Checking derive-com-wrapper v0.1.0-alpha4 (/opt/crater/workdir)
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/com_wrapper.rs:222:22
[INFO] [stderr]     |
[INFO] [stderr] 222 | fn is_com_attr(attr: &&Attribute) -> bool {
[INFO] [stderr]     |                      ^^^^^^^^^^^ help: consider passing by value instead: `&Attribute`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/com_wrapper.rs:222:22
[INFO] [stderr]     |
[INFO] [stderr] 222 | fn is_com_attr(attr: &&Attribute) -> bool {
[INFO] [stderr]     |                      ^^^^^^^^^^^ help: consider passing by value instead: `&Attribute`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.61s
[INFO] running `"docker" "inspect" "4278127c3fb64c88ec3723d7347e2ba5fcdc3cb6f328aa8260bc95a087e5e804"`
[INFO] running `"docker" "rm" "-f" "4278127c3fb64c88ec3723d7347e2ba5fcdc3cb6f328aa8260bc95a087e5e804"`
[INFO] [stdout] 4278127c3fb64c88ec3723d7347e2ba5fcdc3cb6f328aa8260bc95a087e5e804