Dec 05 01:09:23.303 INFO checking MindFlavor/bpb against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 01:09:23.303 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-5/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 01:09:23.620 INFO [stdout] 8542250bbe95ed15be97832b2449d27744c8dc1557c1c8100113930e046672d7
Dec 05 01:09:23.627 INFO running `"docker" "start" "-a" "8542250bbe95ed15be97832b2449d27744c8dc1557c1c8100113930e046672d7"`
Dec 05 01:09:24.614 INFO [stderr] usermod: no changes
Dec 05 01:09:24.680 INFO [stderr]     Checking bpb v0.1.1 (/source)
Dec 05 01:09:25.931 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 05 01:09:25.931 INFO [stderr]   --> src/main.rs:62:9
Dec 05 01:09:25.931 INFO [stderr]    |
Dec 05 01:09:25.931 INFO [stderr] 62 | /         stc.fields
Dec 05 01:09:25.931 INFO [stderr] 63 | |             .iter()
Dec 05 01:09:25.931 INFO [stderr] 64 | |             .filter(|f| !f.optional)
Dec 05 01:09:25.931 INFO [stderr] 65 | |             .map(|bt| abt.push(bt.builder_type.clone().unwrap()))
Dec 05 01:09:25.931 INFO [stderr] 66 | |             .collect::<()>();
Dec 05 01:09:25.931 INFO [stderr]    | |_____________________________^
Dec 05 01:09:25.931 INFO [stderr]    |
Dec 05 01:09:25.931 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 01:09:25.931 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 05 01:09:25.931 INFO [stderr] 
Dec 05 01:09:26.040 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 05 01:09:26.040 INFO [stderr]   --> src/main.rs:62:9
Dec 05 01:09:26.040 INFO [stderr]    |
Dec 05 01:09:26.040 INFO [stderr] 62 | /         stc.fields
Dec 05 01:09:26.040 INFO [stderr] 63 | |             .iter()
Dec 05 01:09:26.040 INFO [stderr] 64 | |             .filter(|f| !f.optional)
Dec 05 01:09:26.040 INFO [stderr] 65 | |             .map(|bt| abt.push(bt.builder_type.clone().unwrap()))
Dec 05 01:09:26.040 INFO [stderr] 66 | |             .collect::<()>();
Dec 05 01:09:26.040 INFO [stderr]    | |_____________________________^
Dec 05 01:09:26.040 INFO [stderr]    |
Dec 05 01:09:26.040 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 01:09:26.040 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 05 01:09:26.040 INFO [stderr] 
Dec 05 01:09:26.061 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.42s
Dec 05 01:09:26.066 INFO [stderr] su: No module specific data is present
Dec 05 01:09:26.393 INFO running `"docker" "inspect" "8542250bbe95ed15be97832b2449d27744c8dc1557c1c8100113930e046672d7"`
Dec 05 01:09:26.555 INFO running `"docker" "rm" "-f" "8542250bbe95ed15be97832b2449d27744c8dc1557c1c8100113930e046672d7"`
Dec 05 01:09:26.827 INFO [stdout] 8542250bbe95ed15be97832b2449d27744c8dc1557c1c8100113930e046672d7