Dec 11 21:40:37.423 INFO checking bn2302/mandelbrot against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 21:40:37.423 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 11 21:40:37.756 INFO [stdout] 66df0c431ac68fc6991574a9e4028515d6153566781978ac180c3ad3cefbd02e
Dec 11 21:40:37.764 INFO running `"docker" "start" "-a" "66df0c431ac68fc6991574a9e4028515d6153566781978ac180c3ad3cefbd02e"`
Dec 11 21:40:38.567 INFO [stderr] usermod: no changes
Dec 11 21:40:38.676 INFO [stderr]     Checking num-bigint v0.1.40
Dec 11 21:40:38.676 INFO [stderr]     Checking png v0.7.0
Dec 11 21:40:40.576 INFO [stderr]     Checking num-rational v0.1.39
Dec 11 21:40:41.420 INFO [stderr]     Checking num v0.1.40
Dec 11 21:40:41.420 INFO [stderr]     Checking image v0.13.0
Dec 11 21:40:46.665 INFO [stderr]     Checking mandelbrot v0.1.0 (/source)
Dec 11 21:40:49.616 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.01s
Dec 11 21:40:49.616 INFO [stderr] su: No module specific data is present
Dec 11 21:40:50.304 INFO running `"docker" "inspect" "66df0c431ac68fc6991574a9e4028515d6153566781978ac180c3ad3cefbd02e"`
Dec 11 21:40:50.598 INFO running `"docker" "rm" "-f" "66df0c431ac68fc6991574a9e4028515d6153566781978ac180c3ad3cefbd02e"`
Dec 11 21:40:50.823 INFO [stdout] 66df0c431ac68fc6991574a9e4028515d6153566781978ac180c3ad3cefbd02e