Dec 03 15:32:02.185 INFO testing compact-0.2.13 against 1.30.1 for beta-1.31-5
Dec 03 15:32:02.185 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 15:32:02.684 INFO [stdout] 6c326c117ed0cf8d6bc67698734fd788bcf298e8c71cc6ca327650c9e8a7b77e
Dec 03 15:32:02.686 INFO running `"docker" "start" "-a" "6c326c117ed0cf8d6bc67698734fd788bcf298e8c71cc6ca327650c9e8a7b77e"`
Dec 03 15:32:04.774 INFO [stderr] usermod: no changes
Dec 03 15:32:04.915 INFO [stderr]    Compiling simple_allocator_trait v0.1.0
Dec 03 15:32:05.814 INFO [stderr]    Compiling compact v0.2.13 (/source)
Dec 03 15:32:07.507 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 15:32:07.507 INFO [stderr]   --> src/lib.rs:17:1
Dec 03 15:32:07.507 INFO [stderr]    |
Dec 03 15:32:07.507 INFO [stderr] 17 | #![feature(specialization)]
Dec 03 15:32:07.507 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 15:32:07.507 INFO [stderr] 
Dec 03 15:32:07.509 INFO [stderr] error: aborting due to previous error
Dec 03 15:32:07.509 INFO [stderr] 
Dec 03 15:32:07.509 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 15:32:07.518 INFO [stderr] error: Could not compile `compact`.
Dec 03 15:32:07.519 INFO [stderr] 
Dec 03 15:32:07.519 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 15:32:07.519 INFO [stderr] su: No module specific data is present
Dec 03 15:32:08.263 INFO running `"docker" "inspect" "6c326c117ed0cf8d6bc67698734fd788bcf298e8c71cc6ca327650c9e8a7b77e"`
Dec 03 15:32:08.553 INFO running `"docker" "rm" "-f" "6c326c117ed0cf8d6bc67698734fd788bcf298e8c71cc6ca327650c9e8a7b77e"`
Dec 03 15:32:08.954 INFO [stdout] 6c326c117ed0cf8d6bc67698734fd788bcf298e8c71cc6ca327650c9e8a7b77e