[INFO] cloning repository kpcyrd/defcon26-pow
[INFO] running `"git" "clone" "--bare" "git://github.com/kpcyrd/defcon26-pow.git" "work/cache/sources/gh/kpcyrd/defcon26-pow"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/kpcyrd/defcon26-pow'...
[INFO] running `"git" "clone" "work/cache/sources/gh/kpcyrd/defcon26-pow" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/kpcyrd/defcon26-pow"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/kpcyrd/defcon26-pow'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kpcyrd/defcon26-pow" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/kpcyrd/defcon26-pow"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/kpcyrd/defcon26-pow'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d17edcaf67cb2a8455e7797f3a373b9c250a3cee
[INFO] sha for GitHub repo kpcyrd/defcon26-pow: d17edcaf67cb2a8455e7797f3a373b9c250a3cee
[INFO] validating manifest of kpcyrd/defcon26-pow on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kpcyrd/defcon26-pow on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kpcyrd/defcon26-pow
[INFO] finished frobbing kpcyrd/defcon26-pow
[INFO] frobbed toml for kpcyrd/defcon26-pow written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/kpcyrd/defcon26-pow/Cargo.toml
[INFO] started frobbing kpcyrd/defcon26-pow
[INFO] finished frobbing kpcyrd/defcon26-pow
[INFO] frobbed toml for kpcyrd/defcon26-pow written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/kpcyrd/defcon26-pow/Cargo.toml
[INFO] crate kpcyrd/defcon26-pow has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking kpcyrd/defcon26-pow against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-3/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8be8b3741fa1bac796da931fa24ad8ef73e72f0de48eb2b10c935217ed23ab36
[INFO] running `"docker" "start" "-a" "8be8b3741fa1bac796da931fa24ad8ef73e72f0de48eb2b10c935217ed23ab36"`
[INFO] [stderr]     Checking num-integer v0.1.38
[INFO] [stderr]     Checking num-bigint v0.1.43
[INFO] [stderr]     Checking defcon26-pow v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/main.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 | /     children.into_iter()
[INFO] [stderr] 83 | |         .map(|c| c.join().unwrap())
[INFO] [stderr] 84 | |         .collect::<Vec<_>>();
[INFO] [stderr]    | |_____________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/main.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 | /     children.into_iter()
[INFO] [stderr] 83 | |         .map(|c| c.join().unwrap())
[INFO] [stderr] 84 | |         .collect::<Vec<_>>();
[INFO] [stderr]    | |_____________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.31s
[INFO] running `"docker" "inspect" "8be8b3741fa1bac796da931fa24ad8ef73e72f0de48eb2b10c935217ed23ab36"`
[INFO] running `"docker" "rm" "-f" "8be8b3741fa1bac796da931fa24ad8ef73e72f0de48eb2b10c935217ed23ab36"`
[INFO] [stdout] 8be8b3741fa1bac796da931fa24ad8ef73e72f0de48eb2b10c935217ed23ab36