Dec 18 02:57:06.509 INFO checking bruce/rust-mazes against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 02:57:06.509 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 02:57:07.024 INFO [stdout] 4ad7b3eb6854a7e5b079f4c1a7dbd7e441523f97ffb23fce1e80fb6b84669324
Dec 18 02:57:07.032 INFO running `"docker" "start" "-a" "4ad7b3eb6854a7e5b079f4c1a7dbd7e441523f97ffb23fce1e80fb6b84669324"`
Dec 18 02:57:08.965 INFO [stderr]     Checking mazes v0.1.0 (/opt/crater/workdir)
Dec 18 02:57:09.445 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 02:57:09.445 INFO [stderr]   --> src/grid.rs:22:20
Dec 18 02:57:09.445 INFO [stderr]    |
Dec 18 02:57:09.445 INFO [stderr] 22 |         for col in (1..cols) {
Dec 18 02:57:09.445 INFO [stderr]    |                    ^^^^^^^^^ help: remove these parentheses
Dec 18 02:57:09.445 INFO [stderr]    |
Dec 18 02:57:09.445 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 02:57:09.445 INFO [stderr] 
Dec 18 02:57:09.445 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 02:57:09.445 INFO [stderr]   --> src/grid.rs:24:24
Dec 18 02:57:09.445 INFO [stderr]    |
Dec 18 02:57:09.445 INFO [stderr] 24 |             for row in (1..rows) {
Dec 18 02:57:09.445 INFO [stderr]    |                        ^^^^^^^^^ help: remove these parentheses
Dec 18 02:57:09.445 INFO [stderr] 
Dec 18 02:57:09.513 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 02:57:09.513 INFO [stderr]   --> src/grid.rs:22:20
Dec 18 02:57:09.513 INFO [stderr]    |
Dec 18 02:57:09.513 INFO [stderr] 22 |         for col in (1..cols) {
Dec 18 02:57:09.513 INFO [stderr]    |                    ^^^^^^^^^ help: remove these parentheses
Dec 18 02:57:09.513 INFO [stderr]    |
Dec 18 02:57:09.513 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 02:57:09.513 INFO [stderr] 
Dec 18 02:57:09.513 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 02:57:09.513 INFO [stderr]   --> src/grid.rs:24:24
Dec 18 02:57:09.513 INFO [stderr]    |
Dec 18 02:57:09.513 INFO [stderr] 24 |             for row in (1..rows) {
Dec 18 02:57:09.513 INFO [stderr]    |                        ^^^^^^^^^ help: remove these parentheses
Dec 18 02:57:09.513 INFO [stderr] 
Dec 18 02:57:10.084 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
Dec 18 02:57:11.105 INFO running `"docker" "inspect" "4ad7b3eb6854a7e5b079f4c1a7dbd7e441523f97ffb23fce1e80fb6b84669324"`
Dec 18 02:57:11.448 INFO running `"docker" "rm" "-f" "4ad7b3eb6854a7e5b079f4c1a7dbd7e441523f97ffb23fce1e80fb6b84669324"`
Dec 18 02:57:11.800 INFO [stdout] 4ad7b3eb6854a7e5b079f4c1a7dbd7e441523f97ffb23fce1e80fb6b84669324