Aug 02 14:43:19.500 INFO checking ascon-0.1.4 against 1.27.2 for lazy_static-1
Aug 02 14:43:19.500 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:43:19.500 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:43:19.501 INFO running `"docker" "create" "-v" "/tmp/crater.h3nLCSgmw5TI:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-2/1.27.2:/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 14:43:19.720 INFO blam! 9ca7f71857e24eeff6d82eaed8b033188a99939345f4917413470ca91d312c05
Aug 02 14:43:19.722 INFO running `"docker" "start" "-a" "9ca7f71857e24eeff6d82eaed8b033188a99939345f4917413470ca91d312c05"`
Aug 02 14:43:21.275 INFO kablam!     Checking ascon v0.1.4 (file:///source)
Aug 02 14:43:22.398 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:43:22.398 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 14:43:22.398 INFO kablam!   |
Aug 02 14:43:22.398 INFO kablam! 1 | #![feature(test)]
Aug 02 14:43:22.398 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 14:43:22.398 INFO kablam! 
Aug 02 14:43:22.398 INFO kablam! error: aborting due to previous error
Aug 02 14:43:22.398 INFO kablam! 
Aug 02 14:43:22.398 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 14:43:22.404 INFO kablam! error: Could not compile `ascon`.
Aug 02 14:43:22.404 INFO kablam! 
Aug 02 14:43:22.404 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 14:43:22.406 INFO kablam! su: No module specific data is present
Aug 02 14:43:23.694 INFO running `"docker" "rm" "-f" "9ca7f71857e24eeff6d82eaed8b033188a99939345f4917413470ca91d312c05"`
Aug 02 14:43:23.777 INFO blam! 9ca7f71857e24eeff6d82eaed8b033188a99939345f4917413470ca91d312c05