Aug 02 12:13:35.197 INFO checking crc-1.8.1 against 1.27.2 for lazy_static-1
Aug 02 12:13:35.197 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:13:35.197 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:13:35.197 INFO running `"docker" "create" "-v" "/tmp/crater.EDSHv84qB5ih:/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 12:13:35.411 INFO blam! 16d9e36f1b776cbb645fb13004df1b023ea766252d96d10c285571adb363dbb2
Aug 02 12:13:35.425 INFO running `"docker" "start" "-a" "16d9e36f1b776cbb645fb13004df1b023ea766252d96d10c285571adb363dbb2"`
Aug 02 12:13:36.755 INFO kablam!    Compiling crc v1.8.1 (file:///source)
Aug 02 12:13:40.331 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:13:40.331 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 12:13:40.331 INFO kablam!   |
Aug 02 12:13:40.331 INFO kablam! 1 | #![feature(test)]
Aug 02 12:13:40.331 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 12:13:40.331 INFO kablam! 
Aug 02 12:13:40.332 INFO kablam! error: aborting due to previous error
Aug 02 12:13:40.332 INFO kablam! 
Aug 02 12:13:40.332 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:13:40.352 INFO kablam! error: Could not compile `crc`.
Aug 02 12:13:40.352 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 12:13:41.109 INFO kablam! error: build failed
Aug 02 12:13:41.111 INFO kablam! su: No module specific data is present
Aug 02 12:13:41.866 INFO running `"docker" "rm" "-f" "16d9e36f1b776cbb645fb13004df1b023ea766252d96d10c285571adb363dbb2"`
Aug 02 12:13:42.043 INFO blam! 16d9e36f1b776cbb645fb13004df1b023ea766252d96d10c285571adb363dbb2