Nov 30 20:35:42.933 INFO checking jpng-0.1.0 against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 20:35:42.933 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-3/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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"`
Nov 30 20:35:43.356 INFO [stdout] 62b1195ef5b9d61d74c0af115d56dfd6d949c16932eeb1b6ecf57eb609b9dc58
Nov 30 20:35:43.364 INFO running `"docker" "start" "-a" "62b1195ef5b9d61d74c0af115d56dfd6d949c16932eeb1b6ecf57eb609b9dc58"`
Nov 30 20:35:44.856 INFO [stderr] usermod: no changes
Nov 30 20:35:45.018 INFO [stderr]    Compiling num-derive v0.2.3
Nov 30 20:35:54.157 INFO [stderr]     Checking image v0.19.0
Nov 30 20:36:00.756 INFO [stderr]     Checking jpng v0.1.0 (/source)
Nov 30 20:36:04.484 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Nov 30 20:36:04.484 INFO [stderr]   --> src/lib.rs:68:9
Nov 30 20:36:04.484 INFO [stderr]    |
Nov 30 20:36:04.484 INFO [stderr] 68 | /         self.image
Nov 30 20:36:04.484 INFO [stderr] 69 | |             .to_rgba()
Nov 30 20:36:04.484 INFO [stderr] 70 | |             .enumerate_pixels()
Nov 30 20:36:04.484 INFO [stderr] 71 | |             .zip(luma.pixels())
Nov 30 20:36:04.484 INFO [stderr] ...  |
Nov 30 20:36:04.484 INFO [stderr] 76 | |                     });
Nov 30 20:36:04.484 INFO [stderr] 77 | |             }).collect::<()>();
Nov 30 20:36:04.484 INFO [stderr]    | |_______________________________^
Nov 30 20:36:04.484 INFO [stderr]    |
Nov 30 20:36:04.484 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 30 20:36:04.486 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Nov 30 20:36:04.486 INFO [stderr] 
Nov 30 20:36:05.216 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Nov 30 20:36:05.216 INFO [stderr]   --> src/lib.rs:68:9
Nov 30 20:36:05.216 INFO [stderr]    |
Nov 30 20:36:05.216 INFO [stderr] 68 | /         self.image
Nov 30 20:36:05.216 INFO [stderr] 69 | |             .to_rgba()
Nov 30 20:36:05.216 INFO [stderr] 70 | |             .enumerate_pixels()
Nov 30 20:36:05.216 INFO [stderr] 71 | |             .zip(luma.pixels())
Nov 30 20:36:05.216 INFO [stderr] ...  |
Nov 30 20:36:05.216 INFO [stderr] 76 | |                     });
Nov 30 20:36:05.216 INFO [stderr] 77 | |             }).collect::<()>();
Nov 30 20:36:05.216 INFO [stderr]    | |_______________________________^
Nov 30 20:36:05.216 INFO [stderr]    |
Nov 30 20:36:05.216 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 30 20:36:05.217 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Nov 30 20:36:05.217 INFO [stderr] 
Nov 30 20:36:05.256 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.37s
Nov 30 20:36:05.274 INFO [stderr] su: No module specific data is present
Nov 30 20:36:06.220 INFO running `"docker" "inspect" "62b1195ef5b9d61d74c0af115d56dfd6d949c16932eeb1b6ecf57eb609b9dc58"`
Nov 30 20:36:06.542 INFO running `"docker" "rm" "-f" "62b1195ef5b9d61d74c0af115d56dfd6d949c16932eeb1b6ecf57eb609b9dc58"`
Nov 30 20:36:06.903 INFO [stdout] 62b1195ef5b9d61d74c0af115d56dfd6d949c16932eeb1b6ecf57eb609b9dc58