Dec 18 02:57:07.424 INFO checking bruce/rust-mazes against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 02:57:07.424 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 02:57:07.867 INFO [stdout] e9e1750eeddb6beb1bd1bc90f86d768d7e0f4ff55097460a5e3aa38d21c2576d
Dec 18 02:57:07.869 INFO running `"docker" "start" "-a" "e9e1750eeddb6beb1bd1bc90f86d768d7e0f4ff55097460a5e3aa38d21c2576d"`
Dec 18 02:57:09.577 INFO [stderr]     Checking mazes v0.1.0 (/opt/crater/workdir)
Dec 18 02:57:09.972 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 02:57:09.972 INFO [stderr]   --> src/grid.rs:22:20
Dec 18 02:57:09.972 INFO [stderr]    |
Dec 18 02:57:09.972 INFO [stderr] 22 |         for col in (1..cols) {
Dec 18 02:57:09.972 INFO [stderr]    |                    ^^^^^^^^^ help: remove these parentheses
Dec 18 02:57:09.972 INFO [stderr]    |
Dec 18 02:57:09.972 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 02:57:09.972 INFO [stderr] 
Dec 18 02:57:09.972 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 02:57:09.972 INFO [stderr]   --> src/grid.rs:24:24
Dec 18 02:57:09.972 INFO [stderr]    |
Dec 18 02:57:09.972 INFO [stderr] 24 |             for row in (1..rows) {
Dec 18 02:57:09.972 INFO [stderr]    |                        ^^^^^^^^^ help: remove these parentheses
Dec 18 02:57:09.972 INFO [stderr] 
Dec 18 02:57:09.976 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 02:57:09.976 INFO [stderr]   --> src/grid.rs:22:20
Dec 18 02:57:09.976 INFO [stderr]    |
Dec 18 02:57:09.976 INFO [stderr] 22 |         for col in (1..cols) {
Dec 18 02:57:09.976 INFO [stderr]    |                    ^^^^^^^^^ help: remove these parentheses
Dec 18 02:57:09.976 INFO [stderr]    |
Dec 18 02:57:09.976 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 02:57:09.976 INFO [stderr] 
Dec 18 02:57:09.976 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 02:57:09.976 INFO [stderr]   --> src/grid.rs:24:24
Dec 18 02:57:09.976 INFO [stderr]    |
Dec 18 02:57:09.976 INFO [stderr] 24 |             for row in (1..rows) {
Dec 18 02:57:09.976 INFO [stderr]    |                        ^^^^^^^^^ help: remove these parentheses
Dec 18 02:57:09.976 INFO [stderr] 
Dec 18 02:57:10.552 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
Dec 18 02:57:11.340 INFO running `"docker" "inspect" "e9e1750eeddb6beb1bd1bc90f86d768d7e0f4ff55097460a5e3aa38d21c2576d"`
Dec 18 02:57:11.660 INFO running `"docker" "rm" "-f" "e9e1750eeddb6beb1bd1bc90f86d768d7e0f4ff55097460a5e3aa38d21c2576d"`
Dec 18 02:57:11.992 INFO [stdout] e9e1750eeddb6beb1bd1bc90f86d768d7e0f4ff55097460a5e3aa38d21c2576d