Sep 05 02:52:16.759 INFO checking array-queue-0.3.3 against master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8 for pr-53913
Sep 05 02:52:16.760 INFO running: cargo +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets
Sep 05 02:52:16.760 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53913/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-2/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/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 +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 05 02:52:16.951 INFO blam! ace5796ac1ca7a266ac436cf05b099c4db14205ce4fc42f15aa3d07d10c428f8
Sep 05 02:52:16.953 INFO running `"docker" "start" "-a" "ace5796ac1ca7a266ac436cf05b099c4db14205ce4fc42f15aa3d07d10c428f8"`
Sep 05 02:52:17.762 INFO kablam!     Checking array-queue v0.3.3 (file:///source)
Sep 05 02:52:19.247 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Sep 05 02:52:19.247 INFO kablam!    --> src/array_queue.rs:553:9
Sep 05 02:52:19.247 INFO kablam!     |
Sep 05 02:52:19.247 INFO kablam! 553 |         a.clone();
Sep 05 02:52:19.247 INFO kablam!     |         ^^^^^^^^^^
Sep 05 02:52:19.247 INFO kablam!     |
Sep 05 02:52:19.247 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 05 02:52:19.247 INFO kablam!     = note: cloning is often expensive and is not expected to have side effects
Sep 05 02:52:19.247 INFO kablam! 
Sep 05 02:52:19.268 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
Sep 05 02:52:19.272 INFO kablam! su: No module specific data is present
Sep 05 02:52:19.776 INFO running `"docker" "rm" "-f" "ace5796ac1ca7a266ac436cf05b099c4db14205ce4fc42f15aa3d07d10c428f8"`
Sep 05 02:52:19.893 INFO blam! ace5796ac1ca7a266ac436cf05b099c4db14205ce4fc42f15aa3d07d10c428f8