Dec 03 13:04:16.711 INFO testing embedded-builder-0.1.1 against 1.30.1 for beta-1.31-5
Dec 03 13:04:16.711 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 13:04:16.857 INFO [stdout] 0a5eaafeef0d21f49fc4c492d9e877b5667e1bd314fdc06980790c6d2927eaa4
Dec 03 13:04:16.859 INFO running `"docker" "start" "-a" "0a5eaafeef0d21f49fc4c492d9e877b5667e1bd314fdc06980790c6d2927eaa4"`
Dec 03 13:04:17.271 INFO [stderr] usermod: no changes
Dec 03 13:04:17.301 INFO [stderr]    Compiling embedded-builder v0.1.1 (/source)
Dec 03 13:04:17.367 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 13:04:17.367 INFO [stderr]  --> src/lib.rs:4:1
Dec 03 13:04:17.367 INFO [stderr]   |
Dec 03 13:04:17.367 INFO [stderr] 4 | #![feature(used)]
Dec 03 13:04:17.367 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 03 13:04:17.367 INFO [stderr] 
Dec 03 13:04:17.368 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 13:04:17.368 INFO [stderr]  --> src/lib.rs:5:1
Dec 03 13:04:17.368 INFO [stderr]   |
Dec 03 13:04:17.368 INFO [stderr] 5 | #![feature(const_fn)]
Dec 03 13:04:17.368 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 03 13:04:17.368 INFO [stderr] 
Dec 03 13:04:17.370 INFO [stderr] error: aborting due to 2 previous errors
Dec 03 13:04:17.370 INFO [stderr] 
Dec 03 13:04:17.370 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 13:04:17.374 INFO [stderr] error: Could not compile `embedded-builder`.
Dec 03 13:04:17.374 INFO [stderr] 
Dec 03 13:04:17.374 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 13:04:17.375 INFO [stderr] su: No module specific data is present
Dec 03 13:04:17.721 INFO running `"docker" "inspect" "0a5eaafeef0d21f49fc4c492d9e877b5667e1bd314fdc06980790c6d2927eaa4"`
Dec 03 13:04:17.989 INFO running `"docker" "rm" "-f" "0a5eaafeef0d21f49fc4c492d9e877b5667e1bd314fdc06980790c6d2927eaa4"`
Dec 03 13:04:18.335 INFO [stdout] 0a5eaafeef0d21f49fc4c492d9e877b5667e1bd314fdc06980790c6d2927eaa4