Aug 02 14:21:30.105 INFO checking base_custom-0.1.13 against 1.27.2+tmplazy for lazy_static-1
Aug 02 14:21:30.105 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:21:30.105 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:21:30.106 INFO running `"docker" "create" "-v" "/tmp/crater.vMxYCHDRUbbi:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2+tmplazy:/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 14:21:30.405 INFO blam! f150d720500100d58854a847fa579085b43a0a5d42de839495276d0f6a9a6b21
Aug 02 14:21:30.407 INFO running `"docker" "start" "-a" "f150d720500100d58854a847fa579085b43a0a5d42de839495276d0f6a9a6b21"`
Aug 02 14:21:31.375 INFO kablam!     Checking base_custom v0.1.13 (file:///source)
Aug 02 14:21:33.641 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:21:33.641 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 14:21:33.641 INFO kablam!   |
Aug 02 14:21:33.641 INFO kablam! 1 | #![feature(test)]
Aug 02 14:21:33.641 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 14:21:33.642 INFO kablam! 
Aug 02 14:21:33.642 INFO kablam! error: aborting due to previous error
Aug 02 14:21:33.642 INFO kablam! 
Aug 02 14:21:33.642 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 14:21:33.648 INFO kablam! error: Could not compile `base_custom`.
Aug 02 14:21:33.648 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 14:21:34.231 INFO kablam! error: build failed
Aug 02 14:21:34.233 INFO kablam! su: No module specific data is present
Aug 02 14:21:34.987 INFO running `"docker" "rm" "-f" "f150d720500100d58854a847fa579085b43a0a5d42de839495276d0f6a9a6b21"`
Aug 02 14:21:35.191 INFO blam! f150d720500100d58854a847fa579085b43a0a5d42de839495276d0f6a9a6b21