Dec 12 01:23:45.671 INFO checking MindFlavor/bpb against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 01:23:45.672 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 12 01:23:45.960 INFO [stdout] ad1859f928cc6a687f243715e9e8af8248d45b921fb0f92e60b2677c245769dd
Dec 12 01:23:45.961 INFO running `"docker" "start" "-a" "ad1859f928cc6a687f243715e9e8af8248d45b921fb0f92e60b2677c245769dd"`
Dec 12 01:23:46.488 INFO [stderr] usermod: no changes
Dec 12 01:23:46.540 INFO [stderr]     Checking bpb v0.1.1 (/source)
Dec 12 01:23:48.060 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 12 01:23:48.060 INFO [stderr]   --> src/main.rs:62:9
Dec 12 01:23:48.060 INFO [stderr]    |
Dec 12 01:23:48.060 INFO [stderr] 62 | /         stc.fields
Dec 12 01:23:48.060 INFO [stderr] 63 | |             .iter()
Dec 12 01:23:48.060 INFO [stderr] 64 | |             .filter(|f| !f.optional)
Dec 12 01:23:48.060 INFO [stderr] 65 | |             .map(|bt| abt.push(bt.builder_type.clone().unwrap()))
Dec 12 01:23:48.060 INFO [stderr] 66 | |             .collect::<()>();
Dec 12 01:23:48.060 INFO [stderr]    | |_____________________________^
Dec 12 01:23:48.060 INFO [stderr]    |
Dec 12 01:23:48.060 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 01:23:48.060 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 12 01:23:48.060 INFO [stderr] 
Dec 12 01:23:48.069 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 12 01:23:48.069 INFO [stderr]   --> src/main.rs:62:9
Dec 12 01:23:48.069 INFO [stderr]    |
Dec 12 01:23:48.069 INFO [stderr] 62 | /         stc.fields
Dec 12 01:23:48.069 INFO [stderr] 63 | |             .iter()
Dec 12 01:23:48.069 INFO [stderr] 64 | |             .filter(|f| !f.optional)
Dec 12 01:23:48.069 INFO [stderr] 65 | |             .map(|bt| abt.push(bt.builder_type.clone().unwrap()))
Dec 12 01:23:48.069 INFO [stderr] 66 | |             .collect::<()>();
Dec 12 01:23:48.069 INFO [stderr]    | |_____________________________^
Dec 12 01:23:48.069 INFO [stderr]    |
Dec 12 01:23:48.069 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 01:23:48.069 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 12 01:23:48.069 INFO [stderr] 
Dec 12 01:23:48.094 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.58s
Dec 12 01:23:48.100 INFO [stderr] su: No module specific data is present
Dec 12 01:23:48.504 INFO running `"docker" "inspect" "ad1859f928cc6a687f243715e9e8af8248d45b921fb0f92e60b2677c245769dd"`
Dec 12 01:23:48.722 INFO running `"docker" "rm" "-f" "ad1859f928cc6a687f243715e9e8af8248d45b921fb0f92e60b2677c245769dd"`
Dec 12 01:23:48.900 INFO [stdout] ad1859f928cc6a687f243715e9e8af8248d45b921fb0f92e60b2677c245769dd