Aug 02 06:06:45.761 INFO checking kankyo-0.2.0 against 1.27.2 for lazy_static-1
Aug 02 06:06:45.761 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:06:45.761 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:06:45.761 INFO running `"docker" "create" "-v" "/tmp/crater.N6Bd48tPYO7Z:/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 02 06:06:45.948 INFO blam! c77bea4064a7c09c4272a5f0f5e016b83c9dd2fe8aa2bccf7d4047639eb74b17
Aug 02 06:06:45.950 INFO running `"docker" "start" "-a" "c77bea4064a7c09c4272a5f0f5e016b83c9dd2fe8aa2bccf7d4047639eb74b17"`
Aug 02 06:06:47.164 INFO kablam!     Checking kankyo v0.2.0 (file:///source)
Aug 02 06:06:48.440 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:06:48.440 INFO kablam!  --> benches/benches.rs:1:1
Aug 02 06:06:48.440 INFO kablam!   |
Aug 02 06:06:48.440 INFO kablam! 1 | #![feature(test)]
Aug 02 06:06:48.440 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 06:06:48.441 INFO kablam! 
Aug 02 06:06:48.442 INFO kablam! error: aborting due to previous error
Aug 02 06:06:48.442 INFO kablam! 
Aug 02 06:06:48.442 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 06:06:48.450 INFO kablam! error: Could not compile `kankyo`.
Aug 02 06:06:48.450 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 06:06:48.608 INFO kablam! error: build failed
Aug 02 06:06:48.609 INFO kablam! su: No module specific data is present
Aug 02 06:06:49.231 INFO running `"docker" "rm" "-f" "c77bea4064a7c09c4272a5f0f5e016b83c9dd2fe8aa2bccf7d4047639eb74b17"`
Aug 02 06:06:49.419 INFO blam! c77bea4064a7c09c4272a5f0f5e016b83c9dd2fe8aa2bccf7d4047639eb74b17