Dec 04 21:00:03.775 INFO checking chris007de/flex against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 21:00:03.775 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 21:00:04.056 INFO [stdout] 7f4d2334e33d960b3796f1106f26d74a868d3656323fe58b38907bf3f8a8d094
Dec 04 21:00:04.060 INFO running `"docker" "start" "-a" "7f4d2334e33d960b3796f1106f26d74a868d3656323fe58b38907bf3f8a8d094"`
Dec 04 21:00:04.768 INFO [stderr] usermod: no changes
Dec 04 21:00:04.847 INFO [stderr]     Checking serde v1.0.20
Dec 04 21:00:04.847 INFO [stderr]     Checking bit_reverse v0.1.7
Dec 04 21:00:12.399 INFO [stderr]     Checking serde_json v1.0.6
Dec 04 21:00:14.275 INFO [stderr]     Checking flex v0.1.0 (/source)
Dec 04 21:00:17.659 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.87s
Dec 04 21:00:17.665 INFO [stderr] su: No module specific data is present
Dec 04 21:00:18.341 INFO running `"docker" "inspect" "7f4d2334e33d960b3796f1106f26d74a868d3656323fe58b38907bf3f8a8d094"`
Dec 04 21:00:18.589 INFO running `"docker" "rm" "-f" "7f4d2334e33d960b3796f1106f26d74a868d3656323fe58b38907bf3f8a8d094"`
Dec 04 21:00:18.739 INFO [stdout] 7f4d2334e33d960b3796f1106f26d74a868d3656323fe58b38907bf3f8a8d094