Dec 05 10:37:04.237 INFO checking matrust-0.0.6 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 10:37:04.237 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 10:37:04.543 INFO [stdout] 845c62a8c19658f268f58c794b817842b5fe9e84ec47cb568d4e2a8d273594b3
Dec 05 10:37:04.547 INFO running `"docker" "start" "-a" "845c62a8c19658f268f58c794b817842b5fe9e84ec47cb568d4e2a8d273594b3"`
Dec 05 10:37:05.061 INFO [stderr] usermod: no changes
Dec 05 10:37:05.134 INFO [stderr]     Checking matrust v0.0.6 (/source)
Dec 05 10:37:05.938 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 05 10:37:05.938 INFO [stderr]    --> src/lib.rs:132:22
Dec 05 10:37:05.938 INFO [stderr]     |
Dec 05 10:37:05.938 INFO [stderr] 132 |         self.map2(m, (|x, y| x + y))
Dec 05 10:37:05.938 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 05 10:37:05.938 INFO [stderr]     |
Dec 05 10:37:05.938 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 05 10:37:05.938 INFO [stderr] 
Dec 05 10:37:05.938 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 05 10:37:05.938 INFO [stderr]    --> src/lib.rs:136:22
Dec 05 10:37:05.938 INFO [stderr]     |
Dec 05 10:37:05.938 INFO [stderr] 136 |         self.map2(m, (|x, y| x - y))
Dec 05 10:37:05.938 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 05 10:37:05.938 INFO [stderr] 
Dec 05 10:37:06.125 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 05 10:37:06.125 INFO [stderr]    --> src/lib.rs:132:22
Dec 05 10:37:06.125 INFO [stderr]     |
Dec 05 10:37:06.125 INFO [stderr] 132 |         self.map2(m, (|x, y| x + y))
Dec 05 10:37:06.125 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 05 10:37:06.125 INFO [stderr]     |
Dec 05 10:37:06.125 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 05 10:37:06.125 INFO [stderr] 
Dec 05 10:37:06.125 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 05 10:37:06.125 INFO [stderr]    --> src/lib.rs:136:22
Dec 05 10:37:06.125 INFO [stderr]     |
Dec 05 10:37:06.125 INFO [stderr] 136 |         self.map2(m, (|x, y| x - y))
Dec 05 10:37:06.126 INFO [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 05 10:37:06.126 INFO [stderr] 
Dec 05 10:37:06.126 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 05 10:37:06.126 INFO [stderr]    --> src/lib.rs:232:29
Dec 05 10:37:06.126 INFO [stderr]     |
Dec 05 10:37:06.126 INFO [stderr] 232 |         assert!(m.map2(&m5, (|x, y| y + x)).is_err());
Dec 05 10:37:06.126 INFO [stderr]     |                             ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 05 10:37:06.126 INFO [stderr] 
Dec 05 10:37:06.334 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
Dec 05 10:37:06.334 INFO [stderr] su: No module specific data is present
Dec 05 10:37:06.588 INFO running `"docker" "inspect" "845c62a8c19658f268f58c794b817842b5fe9e84ec47cb568d4e2a8d273594b3"`
Dec 05 10:37:06.680 INFO running `"docker" "rm" "-f" "845c62a8c19658f268f58c794b817842b5fe9e84ec47cb568d4e2a8d273594b3"`
Dec 05 10:37:06.777 INFO [stdout] 845c62a8c19658f268f58c794b817842b5fe9e84ec47cb568d4e2a8d273594b3