Dec 05 14:42:17.026 INFO checking derive_arbitrary-0.2.0 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 14:42:17.027 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 05 14:42:17.279 INFO [stdout] ba5e2b4c753093524d3234981e93275c6f4ad69d200ae49d8aa05ea1cd5c32ed
Dec 05 14:42:17.284 INFO running `"docker" "start" "-a" "ba5e2b4c753093524d3234981e93275c6f4ad69d200ae49d8aa05ea1cd5c32ed"`
Dec 05 14:42:17.875 INFO [stderr] usermod: no changes
Dec 05 14:42:17.961 INFO [stderr]     Checking arbitrary v0.2.0
Dec 05 14:42:17.987 INFO [stderr]     Checking syn v0.14.9
Dec 05 14:42:17.992 INFO [stderr]    Compiling derive_arbitrary v0.2.0 (/source)
Dec 05 14:42:26.116 INFO [stderr]     Checking synstructure v0.9.0
Dec 05 14:42:29.903 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.00s
Dec 05 14:42:29.907 INFO [stderr] su: No module specific data is present
Dec 05 14:42:31.114 INFO running `"docker" "inspect" "ba5e2b4c753093524d3234981e93275c6f4ad69d200ae49d8aa05ea1cd5c32ed"`
Dec 05 14:42:31.392 INFO running `"docker" "rm" "-f" "ba5e2b4c753093524d3234981e93275c6f4ad69d200ae49d8aa05ea1cd5c32ed"`
Dec 05 14:42:31.741 INFO [stdout] ba5e2b4c753093524d3234981e93275c6f4ad69d200ae49d8aa05ea1cd5c32ed