Sep 05 20:38:50.131 INFO checking workerpool-1.1.1 against master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6 for pr-53854
Sep 05 20:38:50.131 INFO running: cargo +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets
Sep 05 20:38:50.131 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-53854/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-5/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/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 +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 05 20:38:50.481 INFO blam! e97f06154d7bfda6716c5ee6c8f8be4add48935d49b06c977307fce6c8fd6f81
Sep 05 20:38:50.482 INFO running `"docker" "start" "-a" "e97f06154d7bfda6716c5ee6c8f8be4add48935d49b06c977307fce6c8fd6f81"`
Sep 05 20:38:51.975 INFO kablam! usermod: no changes
Sep 05 20:38:52.022 INFO kablam!     Checking workerpool v1.1.1 (file:///source)
Sep 05 20:38:52.759 INFO kablam! warning: unused arithmetic operation which must be used
Sep 05 20:38:52.759 INFO kablam!     --> src/lib.rs:1070:46
Sep 05 20:38:52.759 INFO kablam!      |
Sep 05 20:38:52.759 INFO kablam! 1070 |             pool.execute(Thunk::of(move || { 1 + 1; }));
Sep 05 20:38:52.759 INFO kablam!      |                                              ^^^^^
Sep 05 20:38:52.759 INFO kablam!      |
Sep 05 20:38:52.759 INFO kablam!      = note: #[warn(unused_must_use)] on by default
Sep 05 20:38:52.759 INFO kablam! 
Sep 05 20:38:52.778 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
Sep 05 20:38:52.780 INFO kablam! su: No module specific data is present
Sep 05 20:38:53.423 INFO running `"docker" "rm" "-f" "e97f06154d7bfda6716c5ee6c8f8be4add48935d49b06c977307fce6c8fd6f81"`
Sep 05 20:38:53.486 INFO blam! e97f06154d7bfda6716c5ee6c8f8be4add48935d49b06c977307fce6c8fd6f81