Sep 10 19:23:24.045 INFO checking exit-future-0.1.2 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 19:23:24.045 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 19:23:24.045 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-3/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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=1000" "-e" "CMD=cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 19:23:24.264 INFO blam! 49eafdef40fff1067e8a7fe20ab1b061b7b47c98ae998e8433bf9012e19caa7b
Sep 10 19:23:24.266 INFO running `"docker" "start" "-a" "49eafdef40fff1067e8a7fe20ab1b061b7b47c98ae998e8433bf9012e19caa7b"`
Sep 10 19:23:25.400 INFO kablam! usermod: no changes
Sep 10 19:23:25.554 INFO kablam!     Checking exit-future v0.1.2 (file:///source)
Sep 10 19:23:26.695 INFO kablam! warning: unused variable: `signal`
Sep 10 19:23:26.695 INFO kablam!    --> src/lib.rs:214:14
Sep 10 19:23:26.695 INFO kablam!     |
Sep 10 19:23:26.695 INFO kablam! 214 |         let (signal, exit) = signal();
Sep 10 19:23:26.695 INFO kablam!     |              ^^^^^^ help: consider using `_signal` instead
Sep 10 19:23:26.695 INFO kablam!     |
Sep 10 19:23:26.695 INFO kablam!     = note: #[warn(unused_variables)] on by default
Sep 10 19:23:26.695 INFO kablam! 
Sep 10 19:23:26.765 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
Sep 10 19:23:26.774 INFO kablam! su: No module specific data is present
Sep 10 19:23:27.727 INFO running `"docker" "rm" "-f" "49eafdef40fff1067e8a7fe20ab1b061b7b47c98ae998e8433bf9012e19caa7b"`
Sep 10 19:23:27.854 INFO blam! 49eafdef40fff1067e8a7fe20ab1b061b7b47c98ae998e8433bf9012e19caa7b