Dec 18 14:08:04.156 INFO checking matrust-0.0.6 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 14:08:04.157 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 14:08:04.448 INFO [stdout] 0c6f1f92ca88ca28d5a0b24d0159903392dc4759f8a9f39c4e90341af1fc8a50
Dec 18 14:08:04.493 INFO running `"docker" "start" "-a" "0c6f1f92ca88ca28d5a0b24d0159903392dc4759f8a9f39c4e90341af1fc8a50"`
Dec 18 14:08:05.329 INFO [stderr]     Checking matrust v0.0.6 (/opt/crater/workdir)
Dec 18 14:08:05.779 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 14:08:05.779 INFO [stderr]    --> src/lib.rs:132:22
Dec 18 14:08:05.779 INFO [stderr]     |
Dec 18 14:08:05.779 INFO [stderr] 132 |         self.map2(m, (|x, y| x + y))
Dec 18 14:08:05.779 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 14:08:05.779 INFO [stderr]     |
Dec 18 14:08:05.779 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 18 14:08:05.779 INFO [stderr] 
Dec 18 14:08:05.779 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 14:08:05.779 INFO [stderr]    --> src/lib.rs:136:22
Dec 18 14:08:05.779 INFO [stderr]     |
Dec 18 14:08:05.779 INFO [stderr] 136 |         self.map2(m, (|x, y| x - y))
Dec 18 14:08:05.779 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 14:08:05.779 INFO [stderr] 
Dec 18 14:08:05.812 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 14:08:05.812 INFO [stderr]    --> src/lib.rs:132:22
Dec 18 14:08:05.812 INFO [stderr]     |
Dec 18 14:08:05.812 INFO [stderr] 132 |         self.map2(m, (|x, y| x + y))
Dec 18 14:08:05.812 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 14:08:05.812 INFO [stderr]     |
Dec 18 14:08:05.812 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 18 14:08:05.812 INFO [stderr] 
Dec 18 14:08:05.812 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 14:08:05.812 INFO [stderr]    --> src/lib.rs:136:22
Dec 18 14:08:05.812 INFO [stderr]     |
Dec 18 14:08:05.812 INFO [stderr] 136 |         self.map2(m, (|x, y| x - y))
Dec 18 14:08:05.812 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 14:08:05.812 INFO [stderr] 
Dec 18 14:08:05.813 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 14:08:05.813 INFO [stderr]    --> src/lib.rs:232:29
Dec 18 14:08:05.813 INFO [stderr]     |
Dec 18 14:08:05.813 INFO [stderr] 232 |         assert!(m.map2(&m5, (|x, y| y + x)).is_err());
Dec 18 14:08:05.813 INFO [stderr]     |                             ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 14:08:05.813 INFO [stderr] 
Dec 18 14:08:06.082 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
Dec 18 14:08:06.433 INFO running `"docker" "inspect" "0c6f1f92ca88ca28d5a0b24d0159903392dc4759f8a9f39c4e90341af1fc8a50"`
Dec 18 14:08:06.550 INFO running `"docker" "rm" "-f" "0c6f1f92ca88ca28d5a0b24d0159903392dc4759f8a9f39c4e90341af1fc8a50"`
Dec 18 14:08:06.686 INFO [stdout] 0c6f1f92ca88ca28d5a0b24d0159903392dc4759f8a9f39c4e90341af1fc8a50