Sep 05 02:52:15.217 INFO checking array-queue-0.3.3 against try#5fe695a3844714c70e8f7731a553f7947987a68a for pr-53913
Sep 05 02:52:15.217 INFO running: cargo +5fe695a3844714c70e8f7731a553f7947987a68a-alt check --frozen --all --all-targets
Sep 05 02:52:15.217 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53913/try#5fe695a3844714c70e8f7731a553f7947987a68a:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-0/try#5fe695a3844714c70e8f7731a553f7947987a68a:/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 +5fe695a3844714c70e8f7731a553f7947987a68a-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 05 02:52:15.395 INFO blam! 7de6d7c0b3a12034403125c4333a9e53741fe994e3c419b7e8e4cc7c05250ab6
Sep 05 02:52:15.396 INFO running `"docker" "start" "-a" "7de6d7c0b3a12034403125c4333a9e53741fe994e3c419b7e8e4cc7c05250ab6"`
Sep 05 02:52:16.183 INFO kablam!     Checking array-queue v0.3.3 (file:///source)
Sep 05 02:52:17.613 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Sep 05 02:52:17.613 INFO kablam!    --> src/array_queue.rs:553:9
Sep 05 02:52:17.613 INFO kablam!     |
Sep 05 02:52:17.613 INFO kablam! 553 |         a.clone();
Sep 05 02:52:17.613 INFO kablam!     |         ^^^^^^^^^^
Sep 05 02:52:17.613 INFO kablam!     |
Sep 05 02:52:17.613 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 05 02:52:17.613 INFO kablam!     = note: cloning is often expensive and is not expected to have side effects
Sep 05 02:52:17.613 INFO kablam! 
Sep 05 02:52:17.635 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
Sep 05 02:52:17.639 INFO kablam! su: No module specific data is present
Sep 05 02:52:18.174 INFO running `"docker" "rm" "-f" "7de6d7c0b3a12034403125c4333a9e53741fe994e3c419b7e8e4cc7c05250ab6"`
Sep 05 02:52:18.258 INFO blam! 7de6d7c0b3a12034403125c4333a9e53741fe994e3c419b7e8e4cc7c05250ab6