[INFO] updating cached repository LeopoldArkham/brainfuck
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/LeopoldArkham/brainfuck
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/LeopoldArkham/brainfuck" "work/ex/clippy-test-run/sources/stable/gh/LeopoldArkham/brainfuck"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/LeopoldArkham/brainfuck'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/LeopoldArkham/brainfuck" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/LeopoldArkham/brainfuck"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/LeopoldArkham/brainfuck'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a88dcc5530736f20779f823b8d84686cda4cb617
[INFO] sha for GitHub repo LeopoldArkham/brainfuck: a88dcc5530736f20779f823b8d84686cda4cb617
[INFO] validating manifest of LeopoldArkham/brainfuck 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 LeopoldArkham/brainfuck 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 LeopoldArkham/brainfuck
[INFO] finished frobbing LeopoldArkham/brainfuck
[INFO] frobbed toml for LeopoldArkham/brainfuck written to work/ex/clippy-test-run/sources/stable/gh/LeopoldArkham/brainfuck/Cargo.toml
[INFO] started frobbing LeopoldArkham/brainfuck
[INFO] finished frobbing LeopoldArkham/brainfuck
[INFO] frobbed toml for LeopoldArkham/brainfuck written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/LeopoldArkham/brainfuck/Cargo.toml
[INFO] crate LeopoldArkham/brainfuck has a lockfile. skipping
[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 LeopoldArkham/brainfuck 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/gh/LeopoldArkham/brainfuck:/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] ce4def1a6f444858972e8a162116681dee5c5580feb53d77240f58a2e379b822
[INFO] running `"docker" "start" "-a" "ce4def1a6f444858972e8a162116681dee5c5580feb53d77240f58a2e379b822"`
[INFO] [stderr]     Checking brainfuck v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `is_start`
[INFO] [stderr]   --> src/main.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn is_start(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:74:17
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn output(cell: &u8) {
[INFO] [stderr]    |                 ^^^ help: consider passing by value instead: `u8`
[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: method is never used: `is_start`
[INFO] [stderr]   --> src/main.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn is_start(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:74:17
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn output(cell: &u8) {
[INFO] [stderr]    |                 ^^^ help: consider passing by value instead: `u8`
[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 1.42s
[INFO] running `"docker" "inspect" "ce4def1a6f444858972e8a162116681dee5c5580feb53d77240f58a2e379b822"`
[INFO] running `"docker" "rm" "-f" "ce4def1a6f444858972e8a162116681dee5c5580feb53d77240f58a2e379b822"`
[INFO] [stdout] ce4def1a6f444858972e8a162116681dee5c5580feb53d77240f58a2e379b822