Dec 18 07:05:33.925 INFO checking Jin-WW/mandelbrot against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 07:05:33.925 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/Jin-WW/mandelbrot:/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 18 07:05:34.332 INFO [stdout] b8d19920be8cace91ece5976d61526d6a26782465601f4510800f9cd7818c70c
Dec 18 07:05:34.340 INFO running `"docker" "start" "-a" "b8d19920be8cace91ece5976d61526d6a26782465601f4510800f9cd7818c70c"`
Dec 18 07:05:36.404 INFO [stderr]     Checking png v0.7.0
Dec 18 07:05:37.746 INFO [stderr]     Checking image v0.13.0
Dec 18 07:05:41.744 INFO [stderr]     Checking mandelbrot v0.1.0 (/opt/crater/workdir)
Dec 18 07:05:42.760 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 07:05:42.760 INFO [stderr]   --> src/main.rs:16:5
Dec 18 07:05:42.760 INFO [stderr]    |
Dec 18 07:05:42.760 INFO [stderr] 16 |     write_image("output.png", &pixels, bounds);
Dec 18 07:05:42.760 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:05:42.760 INFO [stderr]    |
Dec 18 07:05:42.760 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 07:05:42.760 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 07:05:42.760 INFO [stderr] 
Dec 18 07:05:43.016 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 07:05:43.016 INFO [stderr]   --> src/main.rs:16:5
Dec 18 07:05:43.016 INFO [stderr]    |
Dec 18 07:05:43.016 INFO [stderr] 16 |     write_image("output.png", &pixels, bounds);
Dec 18 07:05:43.016 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:05:43.016 INFO [stderr]    |
Dec 18 07:05:43.016 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 07:05:43.016 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 07:05:43.016 INFO [stderr] 
Dec 18 07:05:43.054 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.78s
Dec 18 07:05:43.756 INFO running `"docker" "inspect" "b8d19920be8cace91ece5976d61526d6a26782465601f4510800f9cd7818c70c"`
Dec 18 07:05:44.044 INFO running `"docker" "rm" "-f" "b8d19920be8cace91ece5976d61526d6a26782465601f4510800f9cd7818c70c"`
Dec 18 07:05:44.360 INFO [stdout] b8d19920be8cace91ece5976d61526d6a26782465601f4510800f9cd7818c70c