Dec 12 07:44:30.936 INFO checking serde_python_derive-0.1.1 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 07:44:30.936 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 07:44:31.316 INFO [stdout] 40d36cb77edf86b7ae148d62fe9944367a0800a9a4bbca2ffb16eba3c4adc70e
Dec 12 07:44:31.324 INFO running `"docker" "start" "-a" "40d36cb77edf86b7ae148d62fe9944367a0800a9a4bbca2ffb16eba3c4adc70e"`
Dec 12 07:44:32.900 INFO [stderr] usermod: no changes
Dec 12 07:44:32.996 INFO [stderr]     Checking proc-macro2 v0.3.8
Dec 12 07:44:34.270 INFO [stderr]     Checking quote v0.5.2
Dec 12 07:44:35.002 INFO [stderr]     Checking syn v0.13.11
Dec 12 07:44:38.216 INFO [stderr]     Checking serde_python_derive v0.1.1 (/source)
Dec 12 07:44:39.052 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.11s
Dec 12 07:44:39.056 INFO [stderr] su: No module specific data is present
Dec 12 07:44:39.362 INFO running `"docker" "inspect" "40d36cb77edf86b7ae148d62fe9944367a0800a9a4bbca2ffb16eba3c4adc70e"`
Dec 12 07:44:39.480 INFO running `"docker" "rm" "-f" "40d36cb77edf86b7ae148d62fe9944367a0800a9a4bbca2ffb16eba3c4adc70e"`
Dec 12 07:44:39.558 INFO [stdout] 40d36cb77edf86b7ae148d62fe9944367a0800a9a4bbca2ffb16eba3c4adc70e