Dec 03 19:46:12.732 INFO testing alloc-singleton-0.1.0 against 1.30.1 for beta-1.31-5
Dec 03 19:46:12.732 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 03 19:46:13.231 INFO [stdout] 3c7266a1d73122e377ec324fdc3308c7025eb307fffe290b932fa3cdab7fe31d
Dec 03 19:46:13.239 INFO running `"docker" "start" "-a" "3c7266a1d73122e377ec324fdc3308c7025eb307fffe290b932fa3cdab7fe31d"`
Dec 03 19:46:14.003 INFO [stderr] usermod: no changes
Dec 03 19:46:14.091 INFO [stderr]    Compiling as-slice v0.1.0
Dec 03 19:46:14.091 INFO [stderr]    Compiling owned-singleton-macros v0.1.0
Dec 03 19:46:20.877 INFO [stderr]    Compiling owned-singleton v0.1.0
Dec 03 19:46:20.947 INFO [stderr]    Compiling alloc-singleton v0.1.0 (/source)
Dec 03 19:46:20.959 INFO [stderr] error: Edition 2018 is unstable and only available for nightly builds of rustc.
Dec 03 19:46:20.959 INFO [stderr] 
Dec 03 19:46:20.967 INFO [stderr] error: Could not compile `alloc-singleton`.
Dec 03 19:46:20.967 INFO [stderr] 
Dec 03 19:46:20.967 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 19:46:20.969 INFO [stderr] su: No module specific data is present
Dec 03 19:46:21.300 INFO running `"docker" "inspect" "3c7266a1d73122e377ec324fdc3308c7025eb307fffe290b932fa3cdab7fe31d"`
Dec 03 19:46:21.541 INFO running `"docker" "rm" "-f" "3c7266a1d73122e377ec324fdc3308c7025eb307fffe290b932fa3cdab7fe31d"`
Dec 03 19:46:21.753 INFO [stdout] 3c7266a1d73122e377ec324fdc3308c7025eb307fffe290b932fa3cdab7fe31d
