Dec 04 13:01:28.865 INFO checking ntdef/groupby against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 13:01:28.865 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-5/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 13:01:29.263 INFO [stdout] a7fd924784cdaed726dce423e38b495fb15221fa08ee87f1e615bd062134ddd9
Dec 04 13:01:29.271 INFO running `"docker" "start" "-a" "a7fd924784cdaed726dce423e38b495fb15221fa08ee87f1e615bd062134ddd9"`
Dec 04 13:01:31.376 INFO [stderr] usermod: no changes
Dec 04 13:01:31.491 INFO [stderr]     Checking unicode-width v0.1.3
Dec 04 13:01:31.495 INFO [stderr]     Checking unicode-segmentation v0.1.3
Dec 04 13:01:31.495 INFO [stderr]     Checking threadpool v1.3.2
Dec 04 13:01:31.495 INFO [stderr]     Checking term_size v0.2.1
Dec 04 13:01:32.844 INFO [stderr]     Checking clap v2.19.2
Dec 04 13:01:37.195 INFO [stderr]     Checking groupby v0.1.0 (/source)
Dec 04 13:01:38.540 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.13s
Dec 04 13:01:38.555 INFO [stderr] su: No module specific data is present
Dec 04 13:01:39.797 INFO running `"docker" "inspect" "a7fd924784cdaed726dce423e38b495fb15221fa08ee87f1e615bd062134ddd9"`
Dec 04 13:01:40.191 INFO running `"docker" "rm" "-f" "a7fd924784cdaed726dce423e38b495fb15221fa08ee87f1e615bd062134ddd9"`
Dec 04 13:01:40.539 INFO [stdout] a7fd924784cdaed726dce423e38b495fb15221fa08ee87f1e615bd062134ddd9