Aug 02 04:33:56.290 INFO checking md5-asm-0.4.2 against 1.27.2+tmplazy for lazy_static-1
Aug 02 04:33:56.290 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:33:56.290 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:33:56.290 INFO running `"docker" "create" "-v" "/tmp/crater.NzNs8TCxpVlI:/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 04:33:56.552 INFO blam! 4dd84becf7a031b88264676284de34b31a627b9686f51f72cad9650d3e66391e
Aug 02 04:33:56.553 INFO running `"docker" "start" "-a" "4dd84becf7a031b88264676284de34b31a627b9686f51f72cad9650d3e66391e"`
Aug 02 04:33:57.829 INFO kablam!    Compiling md5-asm v0.4.2 (file:///source)
Aug 02 04:34:00.557 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:34:00.557 INFO kablam!  --> benches/lib.rs:2:1
Aug 02 04:34:00.557 INFO kablam!   |
Aug 02 04:34:00.557 INFO kablam! 2 | #![feature(test)]
Aug 02 04:34:00.557 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 04:34:00.557 INFO kablam! 
Aug 02 04:34:00.557 INFO kablam! error: aborting due to previous error
Aug 02 04:34:00.557 INFO kablam! 
Aug 02 04:34:00.557 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 04:34:00.564 INFO kablam! error: Could not compile `md5-asm`.
Aug 02 04:34:00.564 INFO kablam! 
Aug 02 04:34:00.564 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 04:34:00.566 INFO kablam! su: No module specific data is present
Aug 02 04:34:01.131 INFO running `"docker" "rm" "-f" "4dd84becf7a031b88264676284de34b31a627b9686f51f72cad9650d3e66391e"`
Aug 02 04:34:01.291 INFO blam! 4dd84becf7a031b88264676284de34b31a627b9686f51f72cad9650d3e66391e