Oct 12 13:20:42.391 INFO checking someguynamedmatt/mandelbrot against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 13:20:42.392 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-4/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-4/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 12 13:20:42.818 INFO blam! 36538fdde2b244dd89d23f5a60263e275bfe64f16627fb0dca2a422d1359e193
Oct 12 13:20:42.820 INFO running `"docker" "start" "-a" "36538fdde2b244dd89d23f5a60263e275bfe64f16627fb0dca2a422d1359e193"`
Oct 12 13:20:44.316 INFO kablam! usermod: no changes
Oct 12 13:20:44.477 INFO kablam!     Checking num-complex v0.1.41
Oct 12 13:20:44.477 INFO kablam!     Checking num-bigint v0.1.41
Oct 12 13:20:44.477 INFO kablam!     Checking png v0.7.0
Oct 12 13:20:48.076 INFO kablam!     Checking num-rational v0.1.41
Oct 12 13:20:48.884 INFO kablam!     Checking num v0.1.41
Oct 12 13:20:48.884 INFO kablam!     Checking image v0.13.0
Oct 12 13:20:53.794 INFO kablam!     Checking mandelbrot v0.1.0 (/source)
Oct 12 13:20:55.237 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 10.89s
Oct 12 13:20:55.243 INFO kablam! su: No module specific data is present
Oct 12 13:20:56.724 INFO running `"docker" "rm" "-f" "36538fdde2b244dd89d23f5a60263e275bfe64f16627fb0dca2a422d1359e193"`
Oct 12 13:20:57.062 INFO blam! 36538fdde2b244dd89d23f5a60263e275bfe64f16627fb0dca2a422d1359e193