Sep 04 00:39:37.626 INFO checking threading-0.1.2 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 00:39:37.626 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 00:39:37.626 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-3/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/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 +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 00:39:37.813 INFO blam! 1e5c9932423cd7c59e601a9992516088cb5bacd19cfdf5deb610eb91037fec73
Sep 04 00:39:37.814 INFO running `"docker" "start" "-a" "1e5c9932423cd7c59e601a9992516088cb5bacd19cfdf5deb610eb91037fec73"`
Sep 04 00:39:38.407 INFO kablam!     Checking threading v0.1.2 (file:///source)
Sep 04 00:39:38.834 INFO kablam! warning: unused arithmetic operation which must be used
Sep 04 00:39:38.834 INFO kablam!    --> src/lib.rs:165:13
Sep 04 00:39:38.834 INFO kablam!     |
Sep 04 00:39:38.834 INFO kablam! 165 |             i * i;
Sep 04 00:39:38.834 INFO kablam!     |             ^^^^^
Sep 04 00:39:38.834 INFO kablam!     |
Sep 04 00:39:38.834 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 04 00:39:38.834 INFO kablam! 
Sep 04 00:39:38.850 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
Sep 04 00:39:38.852 INFO kablam! su: No module specific data is present
Sep 04 00:39:39.225 INFO running `"docker" "rm" "-f" "1e5c9932423cd7c59e601a9992516088cb5bacd19cfdf5deb610eb91037fec73"`
Sep 04 00:39:39.317 INFO blam! 1e5c9932423cd7c59e601a9992516088cb5bacd19cfdf5deb610eb91037fec73