Dec 05 01:09:23.148 INFO checking MindFlavor/bpb against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 01:09:23.148 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 05 01:09:23.544 INFO [stdout] e28efdb6d4201d4556b222d290273198f24cc138f57d2df2ac7c341f17ca8899
Dec 05 01:09:23.548 INFO running `"docker" "start" "-a" "e28efdb6d4201d4556b222d290273198f24cc138f57d2df2ac7c341f17ca8899"`
Dec 05 01:09:24.645 INFO [stderr] usermod: no changes
Dec 05 01:09:24.728 INFO [stderr]     Checking bpb v0.1.1 (/source)
Dec 05 01:09:25.929 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 05 01:09:25.930 INFO [stderr]   --> src/main.rs:62:9
Dec 05 01:09:25.930 INFO [stderr]    |
Dec 05 01:09:25.930 INFO [stderr] 62 | /         stc.fields
Dec 05 01:09:25.930 INFO [stderr] 63 | |             .iter()
Dec 05 01:09:25.930 INFO [stderr] 64 | |             .filter(|f| !f.optional)
Dec 05 01:09:25.930 INFO [stderr] 65 | |             .map(|bt| abt.push(bt.builder_type.clone().unwrap()))
Dec 05 01:09:25.930 INFO [stderr] 66 | |             .collect::<()>();
Dec 05 01:09:25.930 INFO [stderr]    | |_____________________________^
Dec 05 01:09:25.930 INFO [stderr]    |
Dec 05 01:09:25.930 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 01:09:25.930 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 05 01:09:25.930 INFO [stderr] 
Dec 05 01:09:25.961 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 05 01:09:25.961 INFO [stderr]   --> src/main.rs:62:9
Dec 05 01:09:25.961 INFO [stderr]    |
Dec 05 01:09:25.961 INFO [stderr] 62 | /         stc.fields
Dec 05 01:09:25.961 INFO [stderr] 63 | |             .iter()
Dec 05 01:09:25.961 INFO [stderr] 64 | |             .filter(|f| !f.optional)
Dec 05 01:09:25.961 INFO [stderr] 65 | |             .map(|bt| abt.push(bt.builder_type.clone().unwrap()))
Dec 05 01:09:25.961 INFO [stderr] 66 | |             .collect::<()>();
Dec 05 01:09:25.961 INFO [stderr]    | |_____________________________^
Dec 05 01:09:25.961 INFO [stderr]    |
Dec 05 01:09:25.961 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 01:09:25.961 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 05 01:09:25.961 INFO [stderr] 
Dec 05 01:09:25.983 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.32s
Dec 05 01:09:25.987 INFO [stderr] su: No module specific data is present
Dec 05 01:09:26.362 INFO running `"docker" "inspect" "e28efdb6d4201d4556b222d290273198f24cc138f57d2df2ac7c341f17ca8899"`
Dec 05 01:09:26.537 INFO running `"docker" "rm" "-f" "e28efdb6d4201d4556b222d290273198f24cc138f57d2df2ac7c341f17ca8899"`
Dec 05 01:09:26.811 INFO [stdout] e28efdb6d4201d4556b222d290273198f24cc138f57d2df2ac7c341f17ca8899