Aug 02 07:28:00.829 INFO checking halton-0.1.0 against 1.27.2 for lazy_static-1
Aug 02 07:28:00.829 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 07:28:00.829 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 07:28:00.829 INFO running `"docker" "create" "-v" "/tmp/crater.1OxYDbKvEKxI:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2:/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 07:28:01.050 INFO blam! 12322574c013ed1753f754271a481f463b964f7a5ee85ac023e1103e158038de
Aug 02 07:28:01.052 INFO running `"docker" "start" "-a" "12322574c013ed1753f754271a481f463b964f7a5ee85ac023e1103e158038de"`
Aug 02 07:28:02.247 INFO kablam!     Checking halton v0.1.0 (file:///source)
Aug 02 07:28:04.696 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 07:28:04.696 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 07:28:04.696 INFO kablam!   |
Aug 02 07:28:04.696 INFO kablam! 1 | #![feature(test)]
Aug 02 07:28:04.696 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 07:28:04.696 INFO kablam! 
Aug 02 07:28:04.712 INFO kablam! error: aborting due to previous error
Aug 02 07:28:04.712 INFO kablam! 
Aug 02 07:28:04.713 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 07:28:04.733 INFO kablam! error: Could not compile `halton`.
Aug 02 07:28:04.733 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 07:28:05.022 INFO kablam! error: build failed
Aug 02 07:28:05.024 INFO kablam! su: No module specific data is present
Aug 02 07:28:05.811 INFO running `"docker" "rm" "-f" "12322574c013ed1753f754271a481f463b964f7a5ee85ac023e1103e158038de"`
Aug 02 07:28:05.974 INFO blam! 12322574c013ed1753f754271a481f463b964f7a5ee85ac023e1103e158038de