Dec 02 23:34:25.878 INFO testing overflower_support-0.1.5 against 1.30.1 for beta-1.31-5
Dec 02 23:34:25.878 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 02 23:34:26.566 INFO [stdout] ebef7d85fa7e8e6a1eaaf3326047b8b454316d2552dee39046722f467205cc74
Dec 02 23:34:26.568 INFO running `"docker" "start" "-a" "ebef7d85fa7e8e6a1eaaf3326047b8b454316d2552dee39046722f467205cc74"`
Dec 02 23:34:27.194 INFO [stderr] usermod: no changes
Dec 02 23:34:27.252 INFO [stderr]    Compiling overflower_support v0.1.5 (/source)
Dec 02 23:34:28.251 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 23:34:28.251 INFO [stderr]   --> src/lib.rs:14:1
Dec 02 23:34:28.251 INFO [stderr]    |
Dec 02 23:34:28.252 INFO [stderr] 14 | #![feature(specialization)]
Dec 02 23:34:28.252 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 23:34:28.252 INFO [stderr] 
Dec 02 23:34:28.265 INFO [stderr] error: aborting due to previous error
Dec 02 23:34:28.265 INFO [stderr] 
Dec 02 23:34:28.265 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 23:34:28.272 INFO [stderr] error: Could not compile `overflower_support`.
Dec 02 23:34:28.272 INFO [stderr] 
Dec 02 23:34:28.272 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 23:34:28.274 INFO [stderr] su: No module specific data is present
Dec 02 23:34:31.829 INFO running `"docker" "inspect" "ebef7d85fa7e8e6a1eaaf3326047b8b454316d2552dee39046722f467205cc74"`
Dec 02 23:34:31.924 INFO running `"docker" "rm" "-f" "ebef7d85fa7e8e6a1eaaf3326047b8b454316d2552dee39046722f467205cc74"`
Dec 02 23:34:34.151 INFO [stdout] ebef7d85fa7e8e6a1eaaf3326047b8b454316d2552dee39046722f467205cc74