Sep 04 17:16:42.732 INFO checking futures-0.1.23 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 17:16:42.732 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 17:16:42.732 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 17:16:42.902 INFO blam! e7cc089939d2d6a803c2db5e5dc8cac1190e8bd47734e0992c7b0c9c787436f9
Sep 04 17:16:42.903 INFO running `"docker" "start" "-a" "e7cc089939d2d6a803c2db5e5dc8cac1190e8bd47734e0992c7b0c9c787436f9"`
Sep 04 17:16:43.720 INFO kablam!     Checking futures v0.1.23 (file:///source)
Sep 04 17:16:54.791 INFO kablam! warning: unnecessary parentheses around function argument
Sep 04 17:16:54.791 INFO kablam!   --> tests/bilock.rs:62:38
Sep 04 17:16:54.791 INFO kablam!    |
Sep 04 17:16:54.791 INFO kablam! 62 |     let b = stream::iter_ok::<_, ()>((0..N)).fold(b, |b, _n| {
Sep 04 17:16:54.791 INFO kablam!    |                                      ^^^^^^ help: remove these parentheses
Sep 04 17:16:54.792 INFO kablam!    |
Sep 04 17:16:54.792 INFO kablam!    = note: #[warn(unused_parens)] on by default
Sep 04 17:16:54.793 INFO kablam! 
Sep 04 17:17:05.512 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 21.82s
Sep 04 17:17:05.544 INFO kablam! su: No module specific data is present
Sep 04 17:17:06.019 INFO running `"docker" "rm" "-f" "e7cc089939d2d6a803c2db5e5dc8cac1190e8bd47734e0992c7b0c9c787436f9"`
Sep 04 17:17:06.153 INFO blam! e7cc089939d2d6a803c2db5e5dc8cac1190e8bd47734e0992c7b0c9c787436f9