Sep 02 20:41:05.823 INFO checking array-queue-0.3.3 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53851
Sep 02 20:41:05.823 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 02 20:41:05.823 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53851/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-3/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 20:41:06.034 INFO blam! db670fd190178709142a69e7f73be4a8ec3d8bdac3ea6d5db644490fd4ab4f5a
Sep 02 20:41:06.036 INFO running `"docker" "start" "-a" "db670fd190178709142a69e7f73be4a8ec3d8bdac3ea6d5db644490fd4ab4f5a"`
Sep 02 20:41:06.752 INFO kablam!     Checking array-queue v0.3.3 (file:///source)
Sep 02 20:41:08.179 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Sep 02 20:41:08.179 INFO kablam!    --> src/array_queue.rs:553:9
Sep 02 20:41:08.179 INFO kablam!     |
Sep 02 20:41:08.179 INFO kablam! 553 |         a.clone();
Sep 02 20:41:08.179 INFO kablam!     |         ^^^^^^^^^^
Sep 02 20:41:08.179 INFO kablam!     |
Sep 02 20:41:08.179 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 02 20:41:08.179 INFO kablam!     = note: cloning is often expensive and is not expected to have side effects
Sep 02 20:41:08.179 INFO kablam! 
Sep 02 20:41:08.205 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
Sep 02 20:41:08.208 INFO kablam! su: No module specific data is present
Sep 02 20:41:08.546 INFO running `"docker" "rm" "-f" "db670fd190178709142a69e7f73be4a8ec3d8bdac3ea6d5db644490fd4ab4f5a"`
Sep 02 20:41:08.633 INFO blam! db670fd190178709142a69e7f73be4a8ec3d8bdac3ea6d5db644490fd4ab4f5a