Dec 19 14:03:54.477 INFO checking kpcyrd/defcon26-pow against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 14:03:54.477 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/kpcyrd/defcon26-pow:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 14:03:54.952 INFO [stdout] 28099d338e7df70af8e43b3fa3f47d9584231e66d53c917485ecc7091adc91fc
Dec 19 14:03:54.960 INFO running `"docker" "start" "-a" "28099d338e7df70af8e43b3fa3f47d9584231e66d53c917485ecc7091adc91fc"`
Dec 19 14:03:56.620 INFO [stderr]     Checking num-bigint v0.1.43
Dec 19 14:03:58.605 INFO [stderr]     Checking defcon26-pow v0.1.1 (/opt/crater/workdir)
Dec 19 14:03:59.085 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 19 14:03:59.085 INFO [stderr]   --> src/main.rs:82:5
Dec 19 14:03:59.085 INFO [stderr]    |
Dec 19 14:03:59.085 INFO [stderr] 82 | /     children.into_iter()
Dec 19 14:03:59.085 INFO [stderr] 83 | |         .map(|c| c.join().unwrap())
Dec 19 14:03:59.085 INFO [stderr] 84 | |         .collect::<Vec<_>>();
Dec 19 14:03:59.085 INFO [stderr]    | |_____________________________^
Dec 19 14:03:59.085 INFO [stderr]    |
Dec 19 14:03:59.085 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 14:03:59.087 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 19 14:03:59.087 INFO [stderr] 
Dec 19 14:03:59.256 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 19 14:03:59.256 INFO [stderr]   --> src/main.rs:82:5
Dec 19 14:03:59.256 INFO [stderr]    |
Dec 19 14:03:59.256 INFO [stderr] 82 | /     children.into_iter()
Dec 19 14:03:59.256 INFO [stderr] 83 | |         .map(|c| c.join().unwrap())
Dec 19 14:03:59.256 INFO [stderr] 84 | |         .collect::<Vec<_>>();
Dec 19 14:03:59.256 INFO [stderr]    | |_____________________________^
Dec 19 14:03:59.256 INFO [stderr]    |
Dec 19 14:03:59.256 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 14:03:59.256 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 19 14:03:59.256 INFO [stderr] 
Dec 19 14:03:59.289 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.75s
Dec 19 14:04:00.354 INFO running `"docker" "inspect" "28099d338e7df70af8e43b3fa3f47d9584231e66d53c917485ecc7091adc91fc"`
Dec 19 14:04:00.730 INFO running `"docker" "rm" "-f" "28099d338e7df70af8e43b3fa3f47d9584231e66d53c917485ecc7091adc91fc"`
Dec 19 14:04:01.040 INFO [stdout] 28099d338e7df70af8e43b3fa3f47d9584231e66d53c917485ecc7091adc91fc