Dec 12 09:07:08.324 INFO checking rgm-0.2.1 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 09:07:08.324 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 12 09:07:08.851 INFO [stdout] cff2e817d1f52d979864d2cb44cc1938275f58f0fa3fb51c1acbdbeadef020c4
Dec 12 09:07:08.853 INFO running `"docker" "start" "-a" "cff2e817d1f52d979864d2cb44cc1938275f58f0fa3fb51c1acbdbeadef020c4"`
Dec 12 09:07:10.106 INFO [stderr] usermod: no changes
Dec 12 09:07:10.221 INFO [stderr]     Checking num-bigint v0.2.1
Dec 12 09:07:10.221 INFO [stderr]    Compiling structopt-derive v0.2.14
Dec 12 09:07:10.221 INFO [stderr]    Compiling derive_more v0.13.0
Dec 12 09:07:15.356 INFO [stderr]     Checking structopt v0.2.14
Dec 12 09:07:17.917 INFO [stderr]     Checking rgm v0.2.1 (/source)
Dec 12 09:07:21.538 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.43s
Dec 12 09:07:21.544 INFO [stderr] su: No module specific data is present
Dec 12 09:07:22.533 INFO running `"docker" "inspect" "cff2e817d1f52d979864d2cb44cc1938275f58f0fa3fb51c1acbdbeadef020c4"`
Dec 12 09:07:22.835 INFO running `"docker" "rm" "-f" "cff2e817d1f52d979864d2cb44cc1938275f58f0fa3fb51c1acbdbeadef020c4"`
Dec 12 09:07:23.156 INFO [stdout] cff2e817d1f52d979864d2cb44cc1938275f58f0fa3fb51c1acbdbeadef020c4