Aug 01 15:01:26.404 INFO checking sebasmagri/rust-concurrency-patterns against 1.27.2+tmplazy for lazy_static-1
Aug 01 15:01:26.404 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 15:01:26.404 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 15:01:26.404 INFO running `"docker" "create" "-v" "/tmp/crater.QJWL75qBrpmO:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2+tmplazy:/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" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 01 15:01:26.655 INFO blam! 140643887efffc3177dd9ed5ab69fa250932b89dd34ea8947f54b7570fb52dd3
Aug 01 15:01:26.657 INFO running `"docker" "start" "-a" "140643887efffc3177dd9ed5ab69fa250932b89dd34ea8947f54b7570fb52dd3"`
Aug 01 15:01:27.522 INFO kablam!     Checking concurrency-patterns v0.1.0 (file:///source)
Aug 01 15:01:28.994 INFO kablam! warning: unused `std::result::Result` which must be used
Aug 01 15:01:28.994 INFO kablam!   --> examples/04-fan-in.rs:32:5
Aug 01 15:01:28.994 INFO kablam!    |
Aug 01 15:01:28.994 INFO kablam! 32 |     consumer(Arc::new(Mutex::new(rx))).join();
Aug 01 15:01:28.994 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 15:01:28.994 INFO kablam!    |
Aug 01 15:01:28.994 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Aug 01 15:01:28.994 INFO kablam! 
Aug 01 15:01:29.018 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.53s
Aug 01 15:01:29.021 INFO kablam! su: No module specific data is present
Aug 01 15:01:29.579 INFO running `"docker" "rm" "-f" "140643887efffc3177dd9ed5ab69fa250932b89dd34ea8947f54b7570fb52dd3"`
Aug 01 15:01:29.743 INFO blam! 140643887efffc3177dd9ed5ab69fa250932b89dd34ea8947f54b7570fb52dd3