Dec 03 18:23:01.641 INFO testing bifrost-0.3.0 against 1.30.1 for beta-1.31-5
Dec 03 18:23:01.641 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 18:23:02.335 INFO [stdout] 338232d830b34aafae0a2cbf4100d2d0b901efb05019899b182f8fc690b8fd01
Dec 03 18:23:02.343 INFO running `"docker" "start" "-a" "338232d830b34aafae0a2cbf4100d2d0b901efb05019899b182f8fc690b8fd01"`
Dec 03 18:23:02.999 INFO [stderr] usermod: no changes
Dec 03 18:23:03.025 INFO [stderr]    Compiling bifrost v0.3.0 (/source)
Dec 03 18:23:03.604 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 18:23:03.604 INFO [stderr]  --> src/lib.rs:5:1
Dec 03 18:23:03.604 INFO [stderr]   |
Dec 03 18:23:03.604 INFO [stderr] 5 | #![feature(drain_filter)]
Dec 03 18:23:03.604 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 18:23:03.604 INFO [stderr] 
Dec 03 18:23:03.607 INFO [stderr] error: aborting due to previous error
Dec 03 18:23:03.607 INFO [stderr] 
Dec 03 18:23:03.607 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 18:23:03.611 INFO [stderr] error: Could not compile `bifrost`.
Dec 03 18:23:03.611 INFO [stderr] 
Dec 03 18:23:03.611 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 18:23:03.611 INFO [stderr] su: No module specific data is present
Dec 03 18:23:03.956 INFO running `"docker" "inspect" "338232d830b34aafae0a2cbf4100d2d0b901efb05019899b182f8fc690b8fd01"`
Dec 03 18:23:04.011 INFO running `"docker" "rm" "-f" "338232d830b34aafae0a2cbf4100d2d0b901efb05019899b182f8fc690b8fd01"`
Dec 03 18:23:04.175 INFO [stdout] 338232d830b34aafae0a2cbf4100d2d0b901efb05019899b182f8fc690b8fd01