Sep 03 22:02:58.418 INFO checking workerpool-1.1.1 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 03 22:02:58.418 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 03 22:02:58.418 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 03 22:02:58.574 INFO blam! 5d0735cbdaa1ebb786970ac7ca27e9fb4a90975490fb9b97d6f816ea74b27cb2
Sep 03 22:02:58.575 INFO running `"docker" "start" "-a" "5d0735cbdaa1ebb786970ac7ca27e9fb4a90975490fb9b97d6f816ea74b27cb2"`
Sep 03 22:02:59.162 INFO kablam!     Checking workerpool v1.1.1 (file:///source)
Sep 03 22:03:00.177 INFO kablam! warning: unused arithmetic operation which must be used
Sep 03 22:03:00.178 INFO kablam!     --> src/lib.rs:1070:46
Sep 03 22:03:00.178 INFO kablam!      |
Sep 03 22:03:00.178 INFO kablam! 1070 |             pool.execute(Thunk::of(move || { 1 + 1; }));
Sep 03 22:03:00.178 INFO kablam!      |                                              ^^^^^
Sep 03 22:03:00.178 INFO kablam!      |
Sep 03 22:03:00.178 INFO kablam!      = note: #[warn(unused_must_use)] on by default
Sep 03 22:03:00.178 INFO kablam! 
Sep 03 22:03:00.206 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
Sep 03 22:03:00.210 INFO kablam! su: No module specific data is present
Sep 03 22:03:00.620 INFO running `"docker" "rm" "-f" "5d0735cbdaa1ebb786970ac7ca27e9fb4a90975490fb9b97d6f816ea74b27cb2"`
Sep 03 22:03:00.727 INFO blam! 5d0735cbdaa1ebb786970ac7ca27e9fb4a90975490fb9b97d6f816ea74b27cb2