Sep 03 16:07:51.366 INFO checking sebasmagri/rust-concurrency-patterns against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893 Sep 03 16:07:51.366 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets Sep 03 16:07:51.366 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-2/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 03 16:07:51.586 INFO blam! 867d6a8e8db267cea78217aae67e723ed47714efc8b8da17185d0718867af95f Sep 03 16:07:51.588 INFO running `"docker" "start" "-a" "867d6a8e8db267cea78217aae67e723ed47714efc8b8da17185d0718867af95f"` Sep 03 16:07:52.166 INFO kablam! Checking concurrency-patterns v0.1.0 (file:///source) Sep 03 16:07:52.474 INFO kablam! warning: unused `std::result::Result` which must be used Sep 03 16:07:52.474 INFO kablam! --> examples/04-fan-in.rs:32:5 Sep 03 16:07:52.474 INFO kablam! | Sep 03 16:07:52.474 INFO kablam! 32 | consumer(Arc::new(Mutex::new(rx))).join(); Sep 03 16:07:52.474 INFO kablam! | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Sep 03 16:07:52.474 INFO kablam! | Sep 03 16:07:52.474 INFO kablam! = note: #[warn(unused_must_use)] on by default Sep 03 16:07:52.474 INFO kablam! = note: this `Result` may be an `Err` variant, which should be handled Sep 03 16:07:52.474 INFO kablam! Sep 03 16:07:52.583 INFO kablam! Finished dev [unoptimized + debuginfo] target(s) in 0.43s Sep 03 16:07:52.586 INFO kablam! su: No module specific data is present Sep 03 16:07:53.031 INFO running `"docker" "rm" "-f" "867d6a8e8db267cea78217aae67e723ed47714efc8b8da17185d0718867af95f"` Sep 03 16:07:53.136 INFO blam! 867d6a8e8db267cea78217aae67e723ed47714efc8b8da17185d0718867af95f