Sep 04 20:33:00.373 INFO checking crossbeam-utils-0.2.2 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 20:33:00.373 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 20:33:00.373 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-3/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 20:33:00.546 INFO blam! bf005994fc2d174c8dd8f70322289c5a747d9aca6279950909d8f5f71c8bb199
Sep 04 20:33:00.549 INFO running `"docker" "start" "-a" "bf005994fc2d174c8dd8f70322289c5a747d9aca6279950909d8f5f71c8bb199"`
Sep 04 20:33:01.259 INFO kablam!     Checking crossbeam-utils v0.2.2 (file:///source)
Sep 04 20:33:02.331 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Sep 04 20:33:02.331 INFO kablam!    --> src/cache_padded.rs:286:9
Sep 04 20:33:02.332 INFO kablam!     |
Sep 04 20:33:02.332 INFO kablam! 286 |         a.clone();
Sep 04 20:33:02.332 INFO kablam!     |         ^^^^^^^^^^
Sep 04 20:33:02.332 INFO kablam!     |
Sep 04 20:33:02.332 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 04 20:33:02.332 INFO kablam!     = note: cloning is often expensive and is not expected to have side effects
Sep 04 20:33:02.332 INFO kablam! 
Sep 04 20:33:02.361 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
Sep 04 20:33:02.363 INFO kablam! su: No module specific data is present
Sep 04 20:33:02.782 INFO running `"docker" "rm" "-f" "bf005994fc2d174c8dd8f70322289c5a747d9aca6279950909d8f5f71c8bb199"`
Sep 04 20:33:02.876 INFO blam! bf005994fc2d174c8dd8f70322289c5a747d9aca6279950909d8f5f71c8bb199