Aug 02 07:45:11.837 INFO checking gost94-0.7.0 against 1.27.2+tmplazy for lazy_static-1
Aug 02 07:45:11.837 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 07:45:11.837 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 07:45:11.837 INFO running `"docker" "create" "-v" "/tmp/crater.I0zrY0pUMBRb:/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 07:45:12.126 INFO blam! cbfde8e2407a2876de43fd946a40094703183851ebc68dd1f1ae957c3d0d03ed
Aug 02 07:45:12.126 INFO running `"docker" "start" "-a" "cbfde8e2407a2876de43fd946a40094703183851ebc68dd1f1ae957c3d0d03ed"`
Aug 02 07:45:12.945 INFO kablam!     Checking gost94 v0.7.0 (file:///source)
Aug 02 07:45:15.503 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 07:45:15.503 INFO kablam!  --> benches/lib.rs:2:1
Aug 02 07:45:15.503 INFO kablam!   |
Aug 02 07:45:15.503 INFO kablam! 2 | #![feature(test)]
Aug 02 07:45:15.503 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 07:45:15.504 INFO kablam! 
Aug 02 07:45:15.504 INFO kablam! error: aborting due to previous error
Aug 02 07:45:15.505 INFO kablam! 
Aug 02 07:45:15.505 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 07:45:15.513 INFO kablam! error: Could not compile `gost94`.
Aug 02 07:45:15.514 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 07:45:15.817 INFO kablam! error: build failed
Aug 02 07:45:15.818 INFO kablam! su: No module specific data is present
Aug 02 07:45:16.427 INFO running `"docker" "rm" "-f" "cbfde8e2407a2876de43fd946a40094703183851ebc68dd1f1ae957c3d0d03ed"`
Aug 02 07:45:16.589 INFO blam! cbfde8e2407a2876de43fd946a40094703183851ebc68dd1f1ae957c3d0d03ed