Nov 02 22:06:34.664 INFO testing doublify-toolkit-0.1.1 against 1.30.0 for beta-1.31-1
Nov 02 22:06:34.664 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-1/worker-1/1.30.0:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-1/1.30.0:/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 +1.30.0 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"`
Nov 02 22:06:34.956 INFO blam! 7846b582d1565e764ddfdf5ccda4c306d9953757ec2348637200ff12a16aaafa
Nov 02 22:06:34.959 INFO running `"docker" "start" "-a" "7846b582d1565e764ddfdf5ccda4c306d9953757ec2348637200ff12a16aaafa"`
Nov 02 22:06:35.879 INFO kablam! usermod: no changes
Nov 02 22:06:35.924 INFO kablam!    Compiling doublify-toolkit v0.1.1 (/source)
Nov 02 22:06:36.591 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Nov 02 22:06:36.591 INFO kablam!   --> src/lib.rs:22:1
Nov 02 22:06:36.591 INFO kablam!    |
Nov 02 22:06:36.591 INFO kablam! 22 | #![feature(box_patterns)]
Nov 02 22:06:36.591 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 02 22:06:36.591 INFO kablam! 
Nov 02 22:06:36.591 INFO kablam! error: aborting due to previous error
Nov 02 22:06:36.591 INFO kablam! 
Nov 02 22:06:36.591 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Nov 02 22:06:36.599 INFO kablam! error: Could not compile `doublify-toolkit`.
Nov 02 22:06:36.599 INFO kablam! 
Nov 02 22:06:36.600 INFO kablam! To learn more, run the command again with --verbose.
Nov 02 22:06:36.600 INFO kablam! su: No module specific data is present
Nov 02 22:06:37.142 INFO running `"docker" "rm" "-f" "7846b582d1565e764ddfdf5ccda4c306d9953757ec2348637200ff12a16aaafa"`
Nov 02 22:06:37.363 INFO blam! 7846b582d1565e764ddfdf5ccda4c306d9953757ec2348637200ff12a16aaafa
