Sep 10 07:53:01.410 INFO checking threadpool-1.7.1 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 07:53:01.410 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 07:53:01.410 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-2/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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 +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 07:53:01.582 INFO blam! f1f1085f24c808de1c6e3d30708fa2277d4992215dbd67ebc413bc28932bbbe7
Sep 10 07:53:01.584 INFO running `"docker" "start" "-a" "f1f1085f24c808de1c6e3d30708fa2277d4992215dbd67ebc413bc28932bbbe7"`
Sep 10 07:53:02.643 INFO kablam! usermod: no changes
Sep 10 07:53:02.671 INFO kablam!     Checking threadpool v1.7.1 (file:///source)
Sep 10 07:53:03.236 INFO kablam! warning: unused arithmetic operation which must be used
Sep 10 07:53:03.237 INFO kablam!    --> src/lib.rs:815:36
Sep 10 07:53:03.237 INFO kablam!     |
Sep 10 07:53:03.237 INFO kablam! 815 |             pool.execute(move || { 1 + 1; });
Sep 10 07:53:03.237 INFO kablam!     |                                    ^^^^^
Sep 10 07:53:03.237 INFO kablam!     |
Sep 10 07:53:03.237 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 10 07:53:03.237 INFO kablam! 
Sep 10 07:53:03.255 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
Sep 10 07:53:03.257 INFO kablam! su: No module specific data is present
Sep 10 07:53:03.899 INFO running `"docker" "rm" "-f" "f1f1085f24c808de1c6e3d30708fa2277d4992215dbd67ebc413bc28932bbbe7"`
Sep 10 07:53:03.950 INFO blam! f1f1085f24c808de1c6e3d30708fa2277d4992215dbd67ebc413bc28932bbbe7