Dec 18 15:53:11.196 INFO checking google-appengine1_beta4-cli-1.0.8+20181005 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 15:53:11.196 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/google-appengine1_beta4-cli/1.0.8+20181005:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 15:53:11.457 INFO [stdout] 6748c502e092d84a17ff65658ce2e68b0aae078971c3e8a4805b57fdc95918a7
Dec 18 15:53:11.459 INFO running `"docker" "start" "-a" "6748c502e092d84a17ff65658ce2e68b0aae078971c3e8a4805b57fdc95918a7"`
Dec 18 15:53:12.704 INFO [stderr]     Checking google-appengine1_beta4 v1.0.8+20181005
Dec 18 15:53:18.767 INFO [stderr]     Checking google-appengine1_beta4-cli v1.0.8+20181005 (/opt/crater/workdir)
Dec 18 15:53:22.032 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.53s
Dec 18 15:53:22.345 INFO running `"docker" "inspect" "6748c502e092d84a17ff65658ce2e68b0aae078971c3e8a4805b57fdc95918a7"`
Dec 18 15:53:22.437 INFO running `"docker" "rm" "-f" "6748c502e092d84a17ff65658ce2e68b0aae078971c3e8a4805b57fdc95918a7"`
Dec 18 15:53:22.549 INFO [stdout] 6748c502e092d84a17ff65658ce2e68b0aae078971c3e8a4805b57fdc95918a7