Nov 02 04:51:38.777 INFO testing signals-0.0.1 against beta-2018-10-30 for beta-1.31-1
Nov 02 04:51:38.777 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-1/worker-1/beta-2018-10-30:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-1/beta-2018-10-30:/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 +beta-2018-10-30 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 04:51:39.030 INFO blam! fbf86b1a9433da04c4a7a1978fd8700c421f0d4973be4c4f9aae9c3f9befa171
Nov 02 04:51:39.032 INFO running `"docker" "start" "-a" "fbf86b1a9433da04c4a7a1978fd8700c421f0d4973be4c4f9aae9c3f9befa171"`
Nov 02 04:51:39.538 INFO kablam! usermod: no changes
Nov 02 04:51:39.593 INFO kablam!    Compiling signals v0.0.1 (/source)
Nov 02 04:51:40.225 INFO kablam! error[E0554]: #![feature] may not be used on the beta release channel
Nov 02 04:51:40.226 INFO kablam!   --> src/lib.rs:59:1
Nov 02 04:51:40.226 INFO kablam!    |
Nov 02 04:51:40.226 INFO kablam! 59 | #![feature(conservative_impl_trait)]
Nov 02 04:51:40.226 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 02 04:51:40.226 INFO kablam! 
Nov 02 04:51:40.226 INFO kablam! error: aborting due to previous error
Nov 02 04:51:40.227 INFO kablam! 
Nov 02 04:51:40.227 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Nov 02 04:51:40.232 INFO kablam! error: Could not compile `signals`.
Nov 02 04:51:40.232 INFO kablam! 
Nov 02 04:51:40.232 INFO kablam! To learn more, run the command again with --verbose.
Nov 02 04:51:40.233 INFO kablam! su: No module specific data is present
Nov 02 04:51:40.543 INFO running `"docker" "rm" "-f" "fbf86b1a9433da04c4a7a1978fd8700c421f0d4973be4c4f9aae9c3f9befa171"`
Nov 02 04:51:40.635 INFO blam! fbf86b1a9433da04c4a7a1978fd8700c421f0d4973be4c4f9aae9c3f9befa171
