Dec 04 14:37:00.772 INFO checking markfknight/programming_rust_mandelbrot against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 14:37:00.772 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 14:37:01.200 INFO [stdout] 2a99ee132f91e4cdbb3a0065d4dee7139f8dc0151cd3654186163610d02caf6d
Dec 04 14:37:01.202 INFO running `"docker" "start" "-a" "2a99ee132f91e4cdbb3a0065d4dee7139f8dc0151cd3654186163610d02caf6d"`
Dec 04 14:37:02.162 INFO [stderr] usermod: no changes
Dec 04 14:37:02.280 INFO [stderr]     Checking png v0.7.0
Dec 04 14:37:02.287 INFO [stderr]     Checking jpeg-decoder v0.1.14
Dec 04 14:37:03.753 INFO [stderr]     Checking image v0.13.0
Dec 04 14:37:07.823 INFO [stderr]     Checking mandelbrot v0.1.0 (/source)
Dec 04 14:37:09.171 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.99s
Dec 04 14:37:09.178 INFO [stderr] su: No module specific data is present
Dec 04 14:37:09.523 INFO running `"docker" "inspect" "2a99ee132f91e4cdbb3a0065d4dee7139f8dc0151cd3654186163610d02caf6d"`
Dec 04 14:37:09.682 INFO running `"docker" "rm" "-f" "2a99ee132f91e4cdbb3a0065d4dee7139f8dc0151cd3654186163610d02caf6d"`
Dec 04 14:37:09.789 INFO [stdout] 2a99ee132f91e4cdbb3a0065d4dee7139f8dc0151cd3654186163610d02caf6d