Sep 01 21:23:06.037 INFO checking exit-future-0.1.2 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 01 21:23:06.038 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 21:23:06.038 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-2/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 21:23:06.295 INFO blam! f86059c7cf0a7a80486e4caa24d1be4577fac27d266e274f7d6f4fb63171d2b7
Sep 01 21:23:06.297 INFO running `"docker" "start" "-a" "f86059c7cf0a7a80486e4caa24d1be4577fac27d266e274f7d6f4fb63171d2b7"`
Sep 01 21:23:07.197 INFO kablam!     Checking exit-future v0.1.2 (file:///source)
Sep 01 21:23:08.937 INFO kablam! warning: unused variable: `signal`
Sep 01 21:23:08.937 INFO kablam!    --> src/lib.rs:214:14
Sep 01 21:23:08.937 INFO kablam!     |
Sep 01 21:23:08.937 INFO kablam! 214 |         let (signal, exit) = signal();
Sep 01 21:23:08.937 INFO kablam!     |              ^^^^^^ help: consider using `_signal` instead
Sep 01 21:23:08.937 INFO kablam!     |
Sep 01 21:23:08.937 INFO kablam!     = note: #[warn(unused_variables)] on by default
Sep 01 21:23:08.937 INFO kablam! 
Sep 01 21:23:09.017 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
Sep 01 21:23:09.029 INFO kablam! su: No module specific data is present
Sep 01 21:23:09.613 INFO running `"docker" "rm" "-f" "f86059c7cf0a7a80486e4caa24d1be4577fac27d266e274f7d6f4fb63171d2b7"`
Sep 01 21:23:09.752 INFO blam! f86059c7cf0a7a80486e4caa24d1be4577fac27d266e274f7d6f4fb63171d2b7