Sep 10 07:53:01.409 INFO checking threadpool-1.7.1 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 07:53:01.409 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 07:53:01.409 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-1/try#3a2610c2a16575649896925631bf8cec4f4b1961:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 07:53:01.552 INFO blam! e94e2cd3e192762ecd3e189193be762849bd2ac0244f40057024dfb68872d80f
Sep 10 07:53:01.553 INFO running `"docker" "start" "-a" "e94e2cd3e192762ecd3e189193be762849bd2ac0244f40057024dfb68872d80f"`
Sep 10 07:53:02.294 INFO kablam! usermod: no changes
Sep 10 07:53:02.323 INFO kablam!     Checking threadpool v1.7.1 (file:///source)
Sep 10 07:53:02.905 INFO kablam! warning: unused arithmetic operation which must be used
Sep 10 07:53:02.905 INFO kablam!    --> src/lib.rs:815:36
Sep 10 07:53:02.905 INFO kablam!     |
Sep 10 07:53:02.905 INFO kablam! 815 |             pool.execute(move || { 1 + 1; });
Sep 10 07:53:02.905 INFO kablam!     |                                    ^^^^^
Sep 10 07:53:02.905 INFO kablam!     |
Sep 10 07:53:02.905 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 10 07:53:02.905 INFO kablam! 
Sep 10 07:53:02.930 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
Sep 10 07:53:02.932 INFO kablam! su: No module specific data is present
Sep 10 07:53:03.559 INFO running `"docker" "rm" "-f" "e94e2cd3e192762ecd3e189193be762849bd2ac0244f40057024dfb68872d80f"`
Sep 10 07:53:03.633 INFO blam! e94e2cd3e192762ecd3e189193be762849bd2ac0244f40057024dfb68872d80f