Dec 05 10:37:03.266 INFO checking matrust-0.0.6 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 10:37:03.267 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 10:37:03.715 INFO [stdout] 6c5147a1021b6334ca6e1f4cfcf083b0a95f833181c0a2caf04d754b67602454
Dec 05 10:37:03.721 INFO running `"docker" "start" "-a" "6c5147a1021b6334ca6e1f4cfcf083b0a95f833181c0a2caf04d754b67602454"`
Dec 05 10:37:04.692 INFO [stderr] usermod: no changes
Dec 05 10:37:04.801 INFO [stderr]     Checking matrust v0.0.6 (/source)
Dec 05 10:37:05.718 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 05 10:37:05.718 INFO [stderr]    --> src/lib.rs:132:22
Dec 05 10:37:05.718 INFO [stderr]     |
Dec 05 10:37:05.718 INFO [stderr] 132 |         self.map2(m, (|x, y| x + y))
Dec 05 10:37:05.718 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 05 10:37:05.718 INFO [stderr]     |
Dec 05 10:37:05.718 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 05 10:37:05.718 INFO [stderr] 
Dec 05 10:37:05.718 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 05 10:37:05.718 INFO [stderr]    --> src/lib.rs:136:22
Dec 05 10:37:05.718 INFO [stderr]     |
Dec 05 10:37:05.718 INFO [stderr] 136 |         self.map2(m, (|x, y| x - y))
Dec 05 10:37:05.718 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 05 10:37:05.718 INFO [stderr] 
Dec 05 10:37:05.859 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 05 10:37:05.859 INFO [stderr]    --> src/lib.rs:132:22
Dec 05 10:37:05.859 INFO [stderr]     |
Dec 05 10:37:05.859 INFO [stderr] 132 |         self.map2(m, (|x, y| x + y))
Dec 05 10:37:05.859 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 05 10:37:05.859 INFO [stderr]     |
Dec 05 10:37:05.859 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 05 10:37:05.859 INFO [stderr] 
Dec 05 10:37:05.859 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 05 10:37:05.859 INFO [stderr]    --> src/lib.rs:136:22
Dec 05 10:37:05.859 INFO [stderr]     |
Dec 05 10:37:05.859 INFO [stderr] 136 |         self.map2(m, (|x, y| x - y))
Dec 05 10:37:05.859 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 05 10:37:05.859 INFO [stderr] 
Dec 05 10:37:05.859 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 05 10:37:05.859 INFO [stderr]    --> src/lib.rs:232:29
Dec 05 10:37:05.859 INFO [stderr]     |
Dec 05 10:37:05.859 INFO [stderr] 232 |         assert!(m.map2(&m5, (|x, y| y + x)).is_err());
Dec 05 10:37:05.859 INFO [stderr]     |                             ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 05 10:37:05.859 INFO [stderr] 
Dec 05 10:37:06.094 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
Dec 05 10:37:06.095 INFO [stderr] su: No module specific data is present
Dec 05 10:37:06.434 INFO running `"docker" "inspect" "6c5147a1021b6334ca6e1f4cfcf083b0a95f833181c0a2caf04d754b67602454"`
Dec 05 10:37:06.518 INFO running `"docker" "rm" "-f" "6c5147a1021b6334ca6e1f4cfcf083b0a95f833181c0a2caf04d754b67602454"`
Dec 05 10:37:06.658 INFO [stdout] 6c5147a1021b6334ca6e1f4cfcf083b0a95f833181c0a2caf04d754b67602454