Dec 11 09:52:26.471 INFO checking sebasmagri/rust-concurrency-patterns against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 09:52:26.471 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 09:52:26.932 INFO [stdout] e07f655af7c95dd324fde40c0a1e684f9c5e822dacfd4bbd8e93d5c08a3aba3e
Dec 11 09:52:26.934 INFO running `"docker" "start" "-a" "e07f655af7c95dd324fde40c0a1e684f9c5e822dacfd4bbd8e93d5c08a3aba3e"`
Dec 11 09:52:28.756 INFO [stderr] usermod: no changes
Dec 11 09:52:28.869 INFO [stderr]     Checking concurrency-patterns v0.1.0 (/source)
Dec 11 09:52:29.880 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 09:52:29.880 INFO [stderr]   --> examples/04-fan-in.rs:32:5
Dec 11 09:52:29.880 INFO [stderr]    |
Dec 11 09:52:29.880 INFO [stderr] 32 |     consumer(Arc::new(Mutex::new(rx))).join();
Dec 11 09:52:29.880 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 09:52:29.880 INFO [stderr]    |
Dec 11 09:52:29.880 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 09:52:29.880 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 09:52:29.880 INFO [stderr] 
Dec 11 09:52:30.224 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.42s
Dec 11 09:52:30.232 INFO [stderr] su: No module specific data is present
Dec 11 09:52:31.046 INFO running `"docker" "inspect" "e07f655af7c95dd324fde40c0a1e684f9c5e822dacfd4bbd8e93d5c08a3aba3e"`
Dec 11 09:52:31.346 INFO running `"docker" "rm" "-f" "e07f655af7c95dd324fde40c0a1e684f9c5e822dacfd4bbd8e93d5c08a3aba3e"`
Dec 11 09:52:31.616 INFO [stdout] e07f655af7c95dd324fde40c0a1e684f9c5e822dacfd4bbd8e93d5c08a3aba3e