Dec 04 16:40:29.777 INFO checking jgrosso/mandelbrot-rs against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 16:40:29.777 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 16:40:30.223 INFO [stdout] 516a56f92e0f0ef362dd040e12fbc03679740982dff312b04d0747fc50329f7d
Dec 04 16:40:30.231 INFO running `"docker" "start" "-a" "516a56f92e0f0ef362dd040e12fbc03679740982dff312b04d0747fc50329f7d"`
Dec 04 16:40:31.605 INFO [stderr] usermod: no changes
Dec 04 16:40:31.732 INFO [stderr]     Checking inflate v0.4.2
Dec 04 16:40:31.732 INFO [stderr]     Checking deflate v0.7.18
Dec 04 16:40:31.763 INFO [stderr]    Compiling num-derive v0.2.2
Dec 04 16:40:34.247 INFO [stderr]     Checking png v0.12.0
Dec 04 16:40:35.387 INFO [stderr]     Checking image v0.19.0
Dec 04 16:40:40.395 INFO [stderr]     Checking mandelbrot-rs v0.1.0 (/source)
Dec 04 16:40:42.427 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.79s
Dec 04 16:40:42.437 INFO [stderr] su: No module specific data is present
Dec 04 16:40:43.327 INFO running `"docker" "inspect" "516a56f92e0f0ef362dd040e12fbc03679740982dff312b04d0747fc50329f7d"`
Dec 04 16:40:43.641 INFO running `"docker" "rm" "-f" "516a56f92e0f0ef362dd040e12fbc03679740982dff312b04d0747fc50329f7d"`
Dec 04 16:40:43.982 INFO [stdout] 516a56f92e0f0ef362dd040e12fbc03679740982dff312b04d0747fc50329f7d