Sep 05 00:02:52.831 INFO checking array-queue-0.3.3 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 05 00:02:52.831 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 05 00:02:52.831 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-1/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 05 00:02:52.990 INFO blam! b9402077e9804f083631689234d73ed029da822331a64b77900353ebb3a45801
Sep 05 00:02:52.991 INFO running `"docker" "start" "-a" "b9402077e9804f083631689234d73ed029da822331a64b77900353ebb3a45801"`
Sep 05 00:02:53.813 INFO kablam!     Checking array-queue v0.3.3 (file:///source)
Sep 05 00:02:55.404 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Sep 05 00:02:55.404 INFO kablam!    --> src/array_queue.rs:553:9
Sep 05 00:02:55.404 INFO kablam!     |
Sep 05 00:02:55.404 INFO kablam! 553 |         a.clone();
Sep 05 00:02:55.404 INFO kablam!     |         ^^^^^^^^^^
Sep 05 00:02:55.405 INFO kablam!     |
Sep 05 00:02:55.405 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 05 00:02:55.405 INFO kablam!     = note: cloning is often expensive and is not expected to have side effects
Sep 05 00:02:55.405 INFO kablam! 
Sep 05 00:02:55.428 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
Sep 05 00:02:55.431 INFO kablam! su: No module specific data is present
Sep 05 00:02:55.863 INFO running `"docker" "rm" "-f" "b9402077e9804f083631689234d73ed029da822331a64b77900353ebb3a45801"`
Sep 05 00:02:55.969 INFO blam! b9402077e9804f083631689234d73ed029da822331a64b77900353ebb3a45801