Dec 18 06:23:35.238 INFO checking MindFlavor/bpb against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 06:23:35.238 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/MindFlavor/bpb:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 06:23:35.450 INFO [stdout] 222264e6f323c0684a66c4fe482cfdab42c7b7849c4fb8b2680301bd8b244f15
Dec 18 06:23:35.453 INFO running `"docker" "start" "-a" "222264e6f323c0684a66c4fe482cfdab42c7b7849c4fb8b2680301bd8b244f15"`
Dec 18 06:23:36.172 INFO [stderr]     Checking bpb v0.1.1 (/opt/crater/workdir)
Dec 18 06:23:37.138 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 18 06:23:37.138 INFO [stderr]   --> src/main.rs:62:9
Dec 18 06:23:37.138 INFO [stderr]    |
Dec 18 06:23:37.138 INFO [stderr] 62 | /         stc.fields
Dec 18 06:23:37.138 INFO [stderr] 63 | |             .iter()
Dec 18 06:23:37.138 INFO [stderr] 64 | |             .filter(|f| !f.optional)
Dec 18 06:23:37.138 INFO [stderr] 65 | |             .map(|bt| abt.push(bt.builder_type.clone().unwrap()))
Dec 18 06:23:37.138 INFO [stderr] 66 | |             .collect::<()>();
Dec 18 06:23:37.138 INFO [stderr]    | |_____________________________^
Dec 18 06:23:37.138 INFO [stderr]    |
Dec 18 06:23:37.138 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 06:23:37.138 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 18 06:23:37.138 INFO [stderr] 
Dec 18 06:23:37.138 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 18 06:23:37.138 INFO [stderr]   --> src/main.rs:62:9
Dec 18 06:23:37.138 INFO [stderr]    |
Dec 18 06:23:37.138 INFO [stderr] 62 | /         stc.fields
Dec 18 06:23:37.138 INFO [stderr] 63 | |             .iter()
Dec 18 06:23:37.138 INFO [stderr] 64 | |             .filter(|f| !f.optional)
Dec 18 06:23:37.138 INFO [stderr] 65 | |             .map(|bt| abt.push(bt.builder_type.clone().unwrap()))
Dec 18 06:23:37.138 INFO [stderr] 66 | |             .collect::<()>();
Dec 18 06:23:37.138 INFO [stderr]    | |_____________________________^
Dec 18 06:23:37.138 INFO [stderr]    |
Dec 18 06:23:37.138 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 06:23:37.138 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 18 06:23:37.138 INFO [stderr] 
Dec 18 06:23:37.186 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
Dec 18 06:23:37.556 INFO running `"docker" "inspect" "222264e6f323c0684a66c4fe482cfdab42c7b7849c4fb8b2680301bd8b244f15"`
Dec 18 06:23:37.675 INFO running `"docker" "rm" "-f" "222264e6f323c0684a66c4fe482cfdab42c7b7849c4fb8b2680301bd8b244f15"`
Dec 18 06:23:37.763 INFO [stdout] 222264e6f323c0684a66c4fe482cfdab42c7b7849c4fb8b2680301bd8b244f15