Sep 04 00:39:34.028 INFO checking threadpool-1.7.1 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 00:39:34.028 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 00:39:34.029 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-2/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/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=500" "-e" "CMD=cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 00:39:34.198 INFO blam! e75b80bdd06fd34b64365ac297fa469d583d0b5cbf4255c5da16dbc1ba2ca05e
Sep 04 00:39:34.200 INFO running `"docker" "start" "-a" "e75b80bdd06fd34b64365ac297fa469d583d0b5cbf4255c5da16dbc1ba2ca05e"`
Sep 04 00:39:34.811 INFO kablam!     Checking threadpool v1.7.1 (file:///source)
Sep 04 00:39:35.878 INFO kablam! warning: unused arithmetic operation which must be used
Sep 04 00:39:35.878 INFO kablam!    --> src/lib.rs:815:36
Sep 04 00:39:35.878 INFO kablam!     |
Sep 04 00:39:35.879 INFO kablam! 815 |             pool.execute(move || { 1 + 1; });
Sep 04 00:39:35.879 INFO kablam!     |                                    ^^^^^
Sep 04 00:39:35.879 INFO kablam!     |
Sep 04 00:39:35.879 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 04 00:39:35.879 INFO kablam! 
Sep 04 00:39:35.908 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
Sep 04 00:39:35.910 INFO kablam! su: No module specific data is present
Sep 04 00:39:36.323 INFO running `"docker" "rm" "-f" "e75b80bdd06fd34b64365ac297fa469d583d0b5cbf4255c5da16dbc1ba2ca05e"`
Sep 04 00:39:36.425 INFO blam! e75b80bdd06fd34b64365ac297fa469d583d0b5cbf4255c5da16dbc1ba2ca05e