Nov 26 23:45:15.511 INFO testing json-model-0.2.1 against 1.30.1 for beta-1.31-4
Nov 26 23:45:15.512 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-4/worker-5/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/beta-1.31-4/1.30.1:/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 +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 26 23:45:15.906 INFO [stdout] 491e2efd27428abeba3f4125a6e091ca4ed9edd8716d8b5105eda228add2fd3c
Nov 26 23:45:15.908 INFO running `"docker" "start" "-a" "491e2efd27428abeba3f4125a6e091ca4ed9edd8716d8b5105eda228add2fd3c"`
Nov 26 23:45:16.580 INFO [stderr] usermod: no changes
Nov 26 23:45:16.644 INFO [stderr]    Compiling json-model v0.2.1 (/source)
Nov 26 23:45:16.657 INFO [stderr] error: Edition 2018 is unstable and only available for nightly builds of rustc.
Nov 26 23:45:16.657 INFO [stderr] 
Nov 26 23:45:16.674 INFO [stderr] error: Could not compile `json-model`.
Nov 26 23:45:16.674 INFO [stderr] 
Nov 26 23:45:16.674 INFO [stderr] To learn more, run the command again with --verbose.
Nov 26 23:45:16.675 INFO [stderr] su: No module specific data is present
Nov 26 23:45:16.974 INFO running `"docker" "inspect" "491e2efd27428abeba3f4125a6e091ca4ed9edd8716d8b5105eda228add2fd3c"`
Nov 26 23:45:17.048 INFO running `"docker" "rm" "-f" "491e2efd27428abeba3f4125a6e091ca4ed9edd8716d8b5105eda228add2fd3c"`
Nov 26 23:45:17.145 INFO [stdout] 491e2efd27428abeba3f4125a6e091ca4ed9edd8716d8b5105eda228add2fd3c