Dec 11 09:52:26.139 INFO checking sebasmagri/rust-concurrency-patterns against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 09:52:26.139 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 09:52:26.568 INFO [stdout] 6f14d6929c4c924dc6bc7bb964199f2f54cb688d23c957f72bd1ccd906d60b3a
Dec 11 09:52:26.576 INFO running `"docker" "start" "-a" "6f14d6929c4c924dc6bc7bb964199f2f54cb688d23c957f72bd1ccd906d60b3a"`
Dec 11 09:52:28.079 INFO [stderr] usermod: no changes
Dec 11 09:52:28.136 INFO [stderr]     Checking concurrency-patterns v0.1.0 (/source)
Dec 11 09:52:29.383 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 09:52:29.384 INFO [stderr]   --> examples/04-fan-in.rs:32:5
Dec 11 09:52:29.384 INFO [stderr]    |
Dec 11 09:52:29.384 INFO [stderr] 32 |     consumer(Arc::new(Mutex::new(rx))).join();
Dec 11 09:52:29.384 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 09:52:29.396 INFO [stderr]    |
Dec 11 09:52:29.397 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 09:52:29.397 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 09:52:29.397 INFO [stderr] 
Dec 11 09:52:29.419 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
Dec 11 09:52:29.422 INFO [stderr] su: No module specific data is present
Dec 11 09:52:30.827 INFO running `"docker" "inspect" "6f14d6929c4c924dc6bc7bb964199f2f54cb688d23c957f72bd1ccd906d60b3a"`
Dec 11 09:52:31.286 INFO running `"docker" "rm" "-f" "6f14d6929c4c924dc6bc7bb964199f2f54cb688d23c957f72bd1ccd906d60b3a"`
Dec 11 09:52:31.658 INFO [stdout] 6f14d6929c4c924dc6bc7bb964199f2f54cb688d23c957f72bd1ccd906d60b3a