Dec 17 21:08:40.613 INFO checking kpcyrd/defcon26-pow against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 21:08:40.613 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 21:08:41.158 INFO [stdout] 13213781b416949f3d87a210dd7f22044fe4d24b5123ba32582ea5ad067b5966
Dec 17 21:08:41.160 INFO running `"docker" "start" "-a" "13213781b416949f3d87a210dd7f22044fe4d24b5123ba32582ea5ad067b5966"`
Dec 17 21:08:43.732 INFO [stderr]     Checking digest v0.7.2
Dec 17 21:08:43.733 INFO [stderr]     Checking num-bigint v0.1.43
Dec 17 21:08:44.157 INFO [stderr]     Checking sha2 v0.7.1
Dec 17 21:08:46.074 INFO [stderr]     Checking defcon26-pow v0.1.1 (/opt/crater/workdir)
Dec 17 21:08:46.636 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 17 21:08:46.636 INFO [stderr]   --> src/main.rs:82:5
Dec 17 21:08:46.636 INFO [stderr]    |
Dec 17 21:08:46.636 INFO [stderr] 82 | /     children.into_iter()
Dec 17 21:08:46.636 INFO [stderr] 83 | |         .map(|c| c.join().unwrap())
Dec 17 21:08:46.636 INFO [stderr] 84 | |         .collect::<Vec<_>>();
Dec 17 21:08:46.636 INFO [stderr]    | |_____________________________^
Dec 17 21:08:46.636 INFO [stderr]    |
Dec 17 21:08:46.636 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 21:08:46.636 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 17 21:08:46.636 INFO [stderr] 
Dec 17 21:08:46.660 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 17 21:08:46.660 INFO [stderr]   --> src/main.rs:82:5
Dec 17 21:08:46.660 INFO [stderr]    |
Dec 17 21:08:46.661 INFO [stderr] 82 | /     children.into_iter()
Dec 17 21:08:46.661 INFO [stderr] 83 | |         .map(|c| c.join().unwrap())
Dec 17 21:08:46.661 INFO [stderr] 84 | |         .collect::<Vec<_>>();
Dec 17 21:08:46.661 INFO [stderr]    | |_____________________________^
Dec 17 21:08:46.661 INFO [stderr]    |
Dec 17 21:08:46.661 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 21:08:46.661 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 17 21:08:46.661 INFO [stderr] 
Dec 17 21:08:46.693 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.05s
Dec 17 21:08:47.882 INFO running `"docker" "inspect" "13213781b416949f3d87a210dd7f22044fe4d24b5123ba32582ea5ad067b5966"`
Dec 17 21:08:48.190 INFO running `"docker" "rm" "-f" "13213781b416949f3d87a210dd7f22044fe4d24b5123ba32582ea5ad067b5966"`
Dec 17 21:08:48.540 INFO [stdout] 13213781b416949f3d87a210dd7f22044fe4d24b5123ba32582ea5ad067b5966