Dec 18 14:08:04.272 INFO checking matrust-0.0.6 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 14:08:04.272 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/matrust/0.0.6:/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 14:08:04.574 INFO [stdout] 4e024bdc10602c2aa8d52b0a05e3cededa10f616976d2ecea8c98cfcbdab0833
Dec 18 14:08:04.578 INFO running `"docker" "start" "-a" "4e024bdc10602c2aa8d52b0a05e3cededa10f616976d2ecea8c98cfcbdab0833"`
Dec 18 14:08:05.391 INFO [stderr]     Checking matrust v0.0.6 (/opt/crater/workdir)
Dec 18 14:08:05.880 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 14:08:05.880 INFO [stderr]    --> src/lib.rs:132:22
Dec 18 14:08:05.880 INFO [stderr]     |
Dec 18 14:08:05.880 INFO [stderr] 132 |         self.map2(m, (|x, y| x + y))
Dec 18 14:08:05.880 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 14:08:05.880 INFO [stderr]     |
Dec 18 14:08:05.880 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 18 14:08:05.880 INFO [stderr] 
Dec 18 14:08:05.880 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 14:08:05.880 INFO [stderr]    --> src/lib.rs:136:22
Dec 18 14:08:05.880 INFO [stderr]     |
Dec 18 14:08:05.880 INFO [stderr] 136 |         self.map2(m, (|x, y| x - y))
Dec 18 14:08:05.880 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 14:08:05.880 INFO [stderr] 
Dec 18 14:08:05.940 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 14:08:05.940 INFO [stderr]    --> src/lib.rs:132:22
Dec 18 14:08:05.941 INFO [stderr]     |
Dec 18 14:08:05.941 INFO [stderr] 132 |         self.map2(m, (|x, y| x + y))
Dec 18 14:08:05.941 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 14:08:05.941 INFO [stderr]     |
Dec 18 14:08:05.941 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 18 14:08:05.941 INFO [stderr] 
Dec 18 14:08:05.941 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 14:08:05.941 INFO [stderr]    --> src/lib.rs:136:22
Dec 18 14:08:05.941 INFO [stderr]     |
Dec 18 14:08:05.941 INFO [stderr] 136 |         self.map2(m, (|x, y| x - y))
Dec 18 14:08:05.941 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 14:08:05.941 INFO [stderr] 
Dec 18 14:08:05.941 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 14:08:05.941 INFO [stderr]    --> src/lib.rs:232:29
Dec 18 14:08:05.941 INFO [stderr]     |
Dec 18 14:08:05.941 INFO [stderr] 232 |         assert!(m.map2(&m5, (|x, y| y + x)).is_err());
Dec 18 14:08:05.941 INFO [stderr]     |                             ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 14:08:05.941 INFO [stderr] 
Dec 18 14:08:06.221 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
Dec 18 14:08:06.546 INFO running `"docker" "inspect" "4e024bdc10602c2aa8d52b0a05e3cededa10f616976d2ecea8c98cfcbdab0833"`
Dec 18 14:08:06.686 INFO running `"docker" "rm" "-f" "4e024bdc10602c2aa8d52b0a05e3cededa10f616976d2ecea8c98cfcbdab0833"`
Dec 18 14:08:06.832 INFO [stdout] 4e024bdc10602c2aa8d52b0a05e3cededa10f616976d2ecea8c98cfcbdab0833