Oct 13 02:59:03.633 INFO checking ProgrammingRust/mandelbrot against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 02:59:03.633 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-0/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-0/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 13 02:59:04.025 INFO blam! 00dfe9b2bfbcc8af75ec1dcd69c5c6291f31f5cd68d6f4e23fe55863269584df
Oct 13 02:59:04.032 INFO running `"docker" "start" "-a" "00dfe9b2bfbcc8af75ec1dcd69c5c6291f31f5cd68d6f4e23fe55863269584df"`
Oct 13 02:59:04.734 INFO kablam! usermod: no changes
Oct 13 02:59:04.866 INFO kablam!     Checking num-complex v0.1.41
Oct 13 02:59:04.867 INFO kablam!     Checking num-bigint v0.1.41
Oct 13 02:59:04.868 INFO kablam!     Checking png v0.5.2
Oct 13 02:59:07.308 INFO kablam!     Checking num-rational v0.1.41
Oct 13 02:59:08.551 INFO kablam!     Checking num v0.1.41
Oct 13 02:59:08.551 INFO kablam!     Checking image v0.10.4
Oct 13 02:59:14.664 INFO kablam!     Checking mandelbrot v0.2.0 (/source)
Oct 13 02:59:17.962 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 13.20s
Oct 13 02:59:17.968 INFO kablam! su: No module specific data is present
Oct 13 02:59:18.967 INFO running `"docker" "rm" "-f" "00dfe9b2bfbcc8af75ec1dcd69c5c6291f31f5cd68d6f4e23fe55863269584df"`
Oct 13 02:59:19.268 INFO blam! 00dfe9b2bfbcc8af75ec1dcd69c5c6291f31f5cd68d6f4e23fe55863269584df