Sep 01 23:38:27.523 INFO checking crossbeam-utils-0.2.2 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 01 23:38:27.523 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 23:38:27.523 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/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 01 23:38:27.810 INFO blam! f997fb8e7901da8d95e40625dfff3197cd0f24e4ee02b1e346df6a51356ae198
Sep 01 23:38:27.812 INFO running `"docker" "start" "-a" "f997fb8e7901da8d95e40625dfff3197cd0f24e4ee02b1e346df6a51356ae198"`
Sep 01 23:38:28.637 INFO kablam!     Checking crossbeam-utils v0.2.2 (file:///source)
Sep 01 23:38:30.190 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Sep 01 23:38:30.190 INFO kablam!    --> src/cache_padded.rs:286:9
Sep 01 23:38:30.190 INFO kablam!     |
Sep 01 23:38:30.190 INFO kablam! 286 |         a.clone();
Sep 01 23:38:30.190 INFO kablam!     |         ^^^^^^^^^^
Sep 01 23:38:30.190 INFO kablam!     |
Sep 01 23:38:30.190 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 01 23:38:30.190 INFO kablam!     = note: cloning is often expensive and is not expected to have side effects
Sep 01 23:38:30.190 INFO kablam! 
Sep 01 23:38:30.212 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.60s
Sep 01 23:38:30.215 INFO kablam! su: No module specific data is present
Sep 01 23:38:30.813 INFO running `"docker" "rm" "-f" "f997fb8e7901da8d95e40625dfff3197cd0f24e4ee02b1e346df6a51356ae198"`
Sep 01 23:38:31.008 INFO blam! f997fb8e7901da8d95e40625dfff3197cd0f24e4ee02b1e346df6a51356ae198