Aug 01 18:29:25.563 INFO checking xi-unicode-0.1.0 against 1.27.2 for lazy_static-1
Aug 01 18:29:25.563 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 18:29:25.563 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 18:29:25.564 INFO running `"docker" "create" "-v" "/tmp/crater.uij3OORZSB58:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 01 18:29:25.763 INFO blam! e3cd4a8d952db5bf241135e25955ba95e2d223914670d5c7f969d1caa5a0bf27
Aug 01 18:29:25.765 INFO running `"docker" "start" "-a" "e3cd4a8d952db5bf241135e25955ba95e2d223914670d5c7f969d1caa5a0bf27"`
Aug 01 18:29:26.552 INFO kablam!     Checking xi-unicode v0.1.0 (file:///source)
Aug 01 18:29:28.203 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 18:29:28.203 INFO kablam!   --> benches/bench.rs:15:1
Aug 01 18:29:28.203 INFO kablam!    |
Aug 01 18:29:28.204 INFO kablam! 15 | #![feature(test)]
Aug 01 18:29:28.204 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Aug 01 18:29:28.204 INFO kablam! 
Aug 01 18:29:28.204 INFO kablam! error: aborting due to previous error
Aug 01 18:29:28.204 INFO kablam! 
Aug 01 18:29:28.204 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 18:29:28.210 INFO kablam! error: Could not compile `xi-unicode`.
Aug 01 18:29:28.210 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 18:29:31.041 INFO kablam! error: build failed
Aug 01 18:29:31.042 INFO kablam! su: No module specific data is present
Aug 01 18:29:31.525 INFO running `"docker" "rm" "-f" "e3cd4a8d952db5bf241135e25955ba95e2d223914670d5c7f969d1caa5a0bf27"`
Aug 01 18:29:31.685 INFO blam! e3cd4a8d952db5bf241135e25955ba95e2d223914670d5c7f969d1caa5a0bf27