Sep 10 22:42:25.765 INFO checking array-queue-0.3.3 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 22:42:25.765 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 22:42:25.765 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-5/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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 +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 22:42:25.970 INFO blam! 4256778c74e2595a72d8d514e28e416604d73750284775a651efb90fdc7b9a31
Sep 10 22:42:25.976 INFO running `"docker" "start" "-a" "4256778c74e2595a72d8d514e28e416604d73750284775a651efb90fdc7b9a31"`
Sep 10 22:42:27.570 INFO kablam! usermod: no changes
Sep 10 22:42:27.638 INFO kablam!     Checking array-queue v0.3.3 (file:///source)
Sep 10 22:42:29.106 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Sep 10 22:42:29.106 INFO kablam!    --> src/array_queue.rs:553:9
Sep 10 22:42:29.106 INFO kablam!     |
Sep 10 22:42:29.106 INFO kablam! 553 |         a.clone();
Sep 10 22:42:29.106 INFO kablam!     |         ^^^^^^^^^^
Sep 10 22:42:29.106 INFO kablam!     |
Sep 10 22:42:29.106 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 10 22:42:29.106 INFO kablam!     = note: cloning is often expensive and is not expected to have side effects
Sep 10 22:42:29.106 INFO kablam! 
Sep 10 22:42:29.124 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
Sep 10 22:42:29.126 INFO kablam! su: No module specific data is present
Sep 10 22:42:30.023 INFO running `"docker" "rm" "-f" "4256778c74e2595a72d8d514e28e416604d73750284775a651efb90fdc7b9a31"`
Sep 10 22:42:30.207 INFO blam! 4256778c74e2595a72d8d514e28e416604d73750284775a651efb90fdc7b9a31