Dec 01 17:30:03.954 INFO testing fitzgen/cool-rs against 1.30.1 for beta-1.31-5
Dec 01 17:30:03.954 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-6/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 01 17:30:04.160 INFO [stdout] 853fcd9b299cb7f8cb2ffe77d3daf3a6eb604a12f64056148dee5ff0fa7f47ec
Dec 01 17:30:04.161 INFO running `"docker" "start" "-a" "853fcd9b299cb7f8cb2ffe77d3daf3a6eb604a12f64056148dee5ff0fa7f47ec"`
Dec 01 17:30:04.566 INFO [stderr] usermod: no changes
Dec 01 17:30:04.759 INFO [stderr]    Compiling ucd-util v0.1.3
Dec 01 17:30:04.760 INFO [stderr]    Compiling byte-tools v0.3.0
Dec 01 17:30:04.768 INFO [stderr]    Compiling byteorder v1.2.7
Dec 01 17:30:04.771 INFO [stderr]    Compiling opaque-debug v0.2.1
Dec 01 17:30:04.777 INFO [stderr]    Compiling lalrpop-util v0.16.2
Dec 01 17:30:04.777 INFO [stderr]    Compiling id-arena v2.0.0
Dec 01 17:30:04.777 INFO [stderr]    Compiling itertools v0.7.11
Dec 01 17:30:04.782 INFO [stderr]    Compiling ena v0.10.1
Dec 01 17:30:05.483 INFO [stderr]    Compiling atty v0.2.11
Dec 01 17:30:05.723 INFO [stderr]    Compiling memchr v2.1.1
Dec 01 17:30:07.531 INFO [stderr]    Compiling generic-array v0.12.0
Dec 01 17:30:07.585 INFO [stderr]    Compiling block-padding v0.1.2
Dec 01 17:30:07.954 INFO [stderr]    Compiling phf_generator v0.7.23
Dec 01 17:30:09.079 INFO [stderr]    Compiling clap v2.32.0
Dec 01 17:30:09.094 INFO [stderr]    Compiling regex-syntax v0.6.3
Dec 01 17:30:09.135 INFO [stderr]    Compiling structopt-derive v0.2.13
Dec 01 17:30:09.143 INFO [stderr]    Compiling failure v0.1.3
Dec 01 17:30:09.180 INFO [stderr]    Compiling aho-corasick v0.6.9
Dec 01 17:30:10.223 INFO [stderr]    Compiling block-buffer v0.7.0
Dec 01 17:30:11.139 INFO [stderr]    Compiling digest v0.8.0
Dec 01 17:30:11.143 INFO [stderr]    Compiling string_cache_codegen v0.4.2
Dec 01 17:30:13.715 INFO [stderr]    Compiling sha2 v0.8.0
Dec 01 17:30:23.059 INFO [stderr]    Compiling string_cache v0.7.3
Dec 01 17:30:31.816 INFO [stderr]    Compiling regex v1.0.6
Dec 01 17:30:36.067 INFO [stderr]    Compiling structopt v0.2.13
Dec 01 17:30:42.274 INFO [stderr]    Compiling docopt v1.0.2
Dec 01 17:30:46.604 INFO [stderr]    Compiling lalrpop v0.16.2
Dec 01 17:31:27.055 INFO [stderr]    Compiling cool-rs v0.1.0 (/source)
Dec 01 17:31:27.091 INFO [stderr] error: Edition 2018 is unstable and only available for nightly builds of rustc.
Dec 01 17:31:27.091 INFO [stderr] 
Dec 01 17:31:27.095 INFO [stderr] error: Could not compile `cool-rs`.
Dec 01 17:31:27.095 INFO [stderr] 
Dec 01 17:31:27.095 INFO [stderr] To learn more, run the command again with --verbose.
Dec 01 17:31:27.096 INFO [stderr] su: No module specific data is present
Dec 01 17:31:27.992 INFO running `"docker" "inspect" "853fcd9b299cb7f8cb2ffe77d3daf3a6eb604a12f64056148dee5ff0fa7f47ec"`
Dec 01 17:31:28.249 INFO running `"docker" "rm" "-f" "853fcd9b299cb7f8cb2ffe77d3daf3a6eb604a12f64056148dee5ff0fa7f47ec"`
Dec 01 17:31:28.547 INFO [stdout] 853fcd9b299cb7f8cb2ffe77d3daf3a6eb604a12f64056148dee5ff0fa7f47ec