Dec 03 16:36:24.612 INFO testing cell-0.1.2 against 1.30.1 for beta-1.31-5
Dec 03 16:36:24.612 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 16:36:24.999 INFO [stdout] 083e61ea62352ebaa8fd7088ffb44a2d5cd5642eeefd6a53e95d63564c0cac8e
Dec 03 16:36:25.007 INFO running `"docker" "start" "-a" "083e61ea62352ebaa8fd7088ffb44a2d5cd5642eeefd6a53e95d63564c0cac8e"`
Dec 03 16:36:26.051 INFO [stderr] usermod: no changes
Dec 03 16:36:26.111 INFO [stderr]    Compiling cell v0.1.2 (/source)
Dec 03 16:36:26.963 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 16:36:26.963 INFO [stderr]   --> src/lib.rs:12:1
Dec 03 16:36:26.963 INFO [stderr]    |
Dec 03 16:36:26.963 INFO [stderr] 12 | #![feature(optin_builtin_traits)]
Dec 03 16:36:26.963 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 16:36:26.963 INFO [stderr] 
Dec 03 16:36:26.963 INFO [stderr] error: aborting due to previous error
Dec 03 16:36:26.963 INFO [stderr] 
Dec 03 16:36:26.963 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 16:36:26.967 INFO [stderr] error: Could not compile `cell`.
Dec 03 16:36:26.967 INFO [stderr] 
Dec 03 16:36:26.967 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 16:36:26.968 INFO [stderr] su: No module specific data is present
Dec 03 16:36:27.855 INFO running `"docker" "inspect" "083e61ea62352ebaa8fd7088ffb44a2d5cd5642eeefd6a53e95d63564c0cac8e"`
Dec 03 16:36:28.237 INFO running `"docker" "rm" "-f" "083e61ea62352ebaa8fd7088ffb44a2d5cd5642eeefd6a53e95d63564c0cac8e"`
Dec 03 16:36:28.578 INFO [stdout] 083e61ea62352ebaa8fd7088ffb44a2d5cd5642eeefd6a53e95d63564c0cac8e