Dec 02 09:41:07.516 INFO testing AlexanderThaller/actix_web_middleware_dumper_example against 1.30.1 for beta-1.31-5
Dec 02 09:41:07.516 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/beta-1.31-5/1.30.1:/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"`
Dec 02 09:41:07.932 INFO [stdout] 1339a4138017ff7031d9a51807542e4b49e5ddb58a69db21d4cf45e6dec178e5
Dec 02 09:41:07.934 INFO running `"docker" "start" "-a" "1339a4138017ff7031d9a51807542e4b49e5ddb58a69db21d4cf45e6dec178e5"`
Dec 02 09:41:09.871 INFO [stderr] usermod: no changes
Dec 02 09:41:10.379 INFO [stderr]    Compiling actix-web v0.7.11
Dec 02 09:41:10.399 INFO [stderr]    Compiling actix v0.7.4
Dec 02 09:41:22.513 INFO [stderr]    Compiling actix-net v0.1.0
Dec 02 09:41:53.844 INFO [stderr]    Compiling actix_web_middleware_dumper_example v0.1.0 (/source)
Dec 02 09:41:53.859 INFO [stderr] error: Edition 2018 is unstable and only available for nightly builds of rustc.
Dec 02 09:41:53.859 INFO [stderr] 
Dec 02 09:41:53.872 INFO [stderr] error: Could not compile `actix_web_middleware_dumper_example`.
Dec 02 09:41:53.872 INFO [stderr] 
Dec 02 09:41:53.872 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 09:41:53.874 INFO [stderr] su: No module specific data is present
Dec 02 09:41:54.220 INFO running `"docker" "inspect" "1339a4138017ff7031d9a51807542e4b49e5ddb58a69db21d4cf45e6dec178e5"`
Dec 02 09:41:54.283 INFO running `"docker" "rm" "-f" "1339a4138017ff7031d9a51807542e4b49e5ddb58a69db21d4cf45e6dec178e5"`
Dec 02 09:41:54.355 INFO [stdout] 1339a4138017ff7031d9a51807542e4b49e5ddb58a69db21d4cf45e6dec178e5