Dec 19 19:31:38.061 INFO checking bruce/rust-mazes against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 19:31:38.061 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/bruce/rust-mazes:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 19:31:38.488 INFO [stdout] 2f3e680f8c75fbbd4ac0c36456dd63820aee0d54685a4e0a05f770c87f3bac18
Dec 19 19:31:38.495 INFO running `"docker" "start" "-a" "2f3e680f8c75fbbd4ac0c36456dd63820aee0d54685a4e0a05f770c87f3bac18"`
Dec 19 19:31:40.012 INFO [stderr]     Checking mazes v0.1.0 (/opt/crater/workdir)
Dec 19 19:31:40.324 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 19 19:31:40.324 INFO [stderr]   --> src/grid.rs:22:20
Dec 19 19:31:40.324 INFO [stderr]    |
Dec 19 19:31:40.324 INFO [stderr] 22 |         for col in (1..cols) {
Dec 19 19:31:40.324 INFO [stderr]    |                    ^^^^^^^^^ help: remove these parentheses
Dec 19 19:31:40.324 INFO [stderr]    |
Dec 19 19:31:40.324 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 19:31:40.324 INFO [stderr] 
Dec 19 19:31:40.324 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 19 19:31:40.324 INFO [stderr]   --> src/grid.rs:24:24
Dec 19 19:31:40.324 INFO [stderr]    |
Dec 19 19:31:40.324 INFO [stderr] 24 |             for row in (1..rows) {
Dec 19 19:31:40.324 INFO [stderr]    |                        ^^^^^^^^^ help: remove these parentheses
Dec 19 19:31:40.324 INFO [stderr] 
Dec 19 19:31:40.444 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 19 19:31:40.444 INFO [stderr]   --> src/grid.rs:22:20
Dec 19 19:31:40.444 INFO [stderr]    |
Dec 19 19:31:40.444 INFO [stderr] 22 |         for col in (1..cols) {
Dec 19 19:31:40.444 INFO [stderr]    |                    ^^^^^^^^^ help: remove these parentheses
Dec 19 19:31:40.444 INFO [stderr]    |
Dec 19 19:31:40.444 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 19:31:40.444 INFO [stderr] 
Dec 19 19:31:40.444 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 19 19:31:40.444 INFO [stderr]   --> src/grid.rs:24:24
Dec 19 19:31:40.444 INFO [stderr]    |
Dec 19 19:31:40.444 INFO [stderr] 24 |             for row in (1..rows) {
Dec 19 19:31:40.444 INFO [stderr]    |                        ^^^^^^^^^ help: remove these parentheses
Dec 19 19:31:40.452 INFO [stderr] 
Dec 19 19:31:40.959 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
Dec 19 19:31:41.609 INFO running `"docker" "inspect" "2f3e680f8c75fbbd4ac0c36456dd63820aee0d54685a4e0a05f770c87f3bac18"`
Dec 19 19:31:41.986 INFO running `"docker" "rm" "-f" "2f3e680f8c75fbbd4ac0c36456dd63820aee0d54685a4e0a05f770c87f3bac18"`
Dec 19 19:31:42.331 INFO [stdout] 2f3e680f8c75fbbd4ac0c36456dd63820aee0d54685a4e0a05f770c87f3bac18