Dec 12 12:34:51.523 INFO checking jpng-0.1.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 12:34:51.524 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 12:34:51.952 INFO [stdout] 8e798fd5c9746c83d7fd28697be003643df793f2767c77ac9925caa498af7a55
Dec 12 12:34:51.960 INFO running `"docker" "start" "-a" "8e798fd5c9746c83d7fd28697be003643df793f2767c77ac9925caa498af7a55"`
Dec 12 12:34:54.084 INFO [stderr] usermod: no changes
Dec 12 12:34:54.248 INFO [stderr]     Checking image v0.19.0
Dec 12 12:35:00.500 INFO [stderr]     Checking jpng v0.1.0 (/source)
Dec 12 12:35:05.368 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 12 12:35:05.368 INFO [stderr]   --> src/lib.rs:68:9
Dec 12 12:35:05.368 INFO [stderr]    |
Dec 12 12:35:05.368 INFO [stderr] 68 | /         self.image
Dec 12 12:35:05.368 INFO [stderr] 69 | |             .to_rgba()
Dec 12 12:35:05.368 INFO [stderr] 70 | |             .enumerate_pixels()
Dec 12 12:35:05.368 INFO [stderr] 71 | |             .zip(luma.pixels())
Dec 12 12:35:05.368 INFO [stderr] ...  |
Dec 12 12:35:05.368 INFO [stderr] 76 | |                     });
Dec 12 12:35:05.368 INFO [stderr] 77 | |             }).collect::<()>();
Dec 12 12:35:05.368 INFO [stderr]    | |_______________________________^
Dec 12 12:35:05.378 INFO [stderr]    |
Dec 12 12:35:05.378 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 12:35:05.378 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 12 12:35:05.378 INFO [stderr] 
Dec 12 12:35:05.578 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 12 12:35:05.578 INFO [stderr]   --> src/lib.rs:68:9
Dec 12 12:35:05.578 INFO [stderr]    |
Dec 12 12:35:05.578 INFO [stderr] 68 | /         self.image
Dec 12 12:35:05.578 INFO [stderr] 69 | |             .to_rgba()
Dec 12 12:35:05.578 INFO [stderr] 70 | |             .enumerate_pixels()
Dec 12 12:35:05.578 INFO [stderr] 71 | |             .zip(luma.pixels())
Dec 12 12:35:05.578 INFO [stderr] ...  |
Dec 12 12:35:05.578 INFO [stderr] 76 | |                     });
Dec 12 12:35:05.578 INFO [stderr] 77 | |             }).collect::<()>();
Dec 12 12:35:05.578 INFO [stderr]    | |_______________________________^
Dec 12 12:35:05.578 INFO [stderr]    |
Dec 12 12:35:05.578 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 12:35:05.578 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 12 12:35:05.578 INFO [stderr] 
Dec 12 12:35:05.613 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.51s
Dec 12 12:35:05.622 INFO [stderr] su: No module specific data is present
Dec 12 12:35:07.252 INFO running `"docker" "inspect" "8e798fd5c9746c83d7fd28697be003643df793f2767c77ac9925caa498af7a55"`
Dec 12 12:35:07.601 INFO running `"docker" "rm" "-f" "8e798fd5c9746c83d7fd28697be003643df793f2767c77ac9925caa498af7a55"`
Dec 12 12:35:07.956 INFO [stdout] 8e798fd5c9746c83d7fd28697be003643df793f2767c77ac9925caa498af7a55