Aug 02 00:29:41.770 INFO checking risp-0.7.0 against 1.27.2 for lazy_static-1
Aug 02 00:29:41.770 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:29:41.770 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:29:41.770 INFO running `"docker" "create" "-v" "/tmp/crater.yzIGndOq5JxG:/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 00:29:42.018 INFO blam! e994cdd0ca5f39596e8186dddb0fe9d179db7529af548d1415bffd670db26c13
Aug 02 00:29:42.020 INFO running `"docker" "start" "-a" "e994cdd0ca5f39596e8186dddb0fe9d179db7529af548d1415bffd670db26c13"`
Aug 02 00:29:43.550 INFO kablam!     Checking risp v0.7.0 (file:///source)
Aug 02 00:29:48.743 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 00:29:48.743 INFO kablam!  --> benches/example.rs:1:1
Aug 02 00:29:48.743 INFO kablam!   |
Aug 02 00:29:48.743 INFO kablam! 1 | #![feature(test)]
Aug 02 00:29:48.743 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 00:29:48.752 INFO kablam! 
Aug 02 00:29:48.753 INFO kablam! error: aborting due to previous error
Aug 02 00:29:48.753 INFO kablam! 
Aug 02 00:29:48.753 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 00:29:48.805 INFO kablam! error: Could not compile `risp`.
Aug 02 00:29:48.806 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 00:29:50.453 INFO kablam! error: build failed
Aug 02 00:29:50.455 INFO kablam! su: No module specific data is present
Aug 02 00:29:51.018 INFO running `"docker" "rm" "-f" "e994cdd0ca5f39596e8186dddb0fe9d179db7529af548d1415bffd670db26c13"`
Aug 02 00:29:51.125 INFO blam! e994cdd0ca5f39596e8186dddb0fe9d179db7529af548d1415bffd670db26c13