Sep 21 13:22:55.948 INFO checking array-queue-0.3.3 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 13:22:55.948 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 13:22:55.948 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-3/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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 +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 13:22:56.247 INFO blam! ad064c38d1ef97268a6a0087e3b9bc9a8b5e85f3509154244734774023314dd9
Sep 21 13:22:56.252 INFO running `"docker" "start" "-a" "ad064c38d1ef97268a6a0087e3b9bc9a8b5e85f3509154244734774023314dd9"`
Sep 21 13:22:58.725 INFO kablam! usermod: no changes
Sep 21 13:22:58.801 INFO kablam!     Checking array-queue v0.3.3 (/source)
Sep 21 13:22:59.854 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Sep 21 13:22:59.854 INFO kablam!    --> src/array_queue.rs:553:9
Sep 21 13:22:59.854 INFO kablam!     |
Sep 21 13:22:59.854 INFO kablam! 553 |         a.clone();
Sep 21 13:22:59.854 INFO kablam!     |         ^^^^^^^^^^
Sep 21 13:22:59.854 INFO kablam!     |
Sep 21 13:22:59.854 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 21 13:22:59.854 INFO kablam!     = note: cloning is often expensive and is not expected to have side effects
Sep 21 13:22:59.854 INFO kablam! 
Sep 21 13:22:59.902 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
Sep 21 13:22:59.911 INFO kablam! su: No module specific data is present
Sep 21 13:23:00.601 INFO running `"docker" "rm" "-f" "ad064c38d1ef97268a6a0087e3b9bc9a8b5e85f3509154244734774023314dd9"`
Sep 21 13:23:00.731 INFO blam! ad064c38d1ef97268a6a0087e3b9bc9a8b5e85f3509154244734774023314dd9