Aug 01 21:37:22.865 INFO checking spiral-0.1.9 against 1.27.2 for lazy_static-1
Aug 01 21:37:22.865 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:37:22.865 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:37:22.865 INFO running `"docker" "create" "-v" "/tmp/crater.ET2zqLok9lTe:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2:/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 01 21:37:23.086 INFO blam! 225aad9c2dcd25629fd2675792b3cc704fb9fc417c6b91451a048475d95bff5e
Aug 01 21:37:23.089 INFO running `"docker" "start" "-a" "225aad9c2dcd25629fd2675792b3cc704fb9fc417c6b91451a048475d95bff5e"`
Aug 01 21:37:24.356 INFO kablam!     Checking spiral v0.1.9 (file:///source)
Aug 01 21:37:25.843 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:37:25.843 INFO kablam!  --> benches/benchmarks.rs:1:1
Aug 01 21:37:25.843 INFO kablam!   |
Aug 01 21:37:25.843 INFO kablam! 1 | #![feature(test)]
Aug 01 21:37:25.843 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 21:37:25.843 INFO kablam! 
Aug 01 21:37:25.844 INFO kablam! error: aborting due to previous error
Aug 01 21:37:25.844 INFO kablam! 
Aug 01 21:37:25.844 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:37:25.850 INFO kablam! error: Could not compile `spiral`.
Aug 01 21:37:25.850 INFO kablam! 
Aug 01 21:37:25.851 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 21:37:25.852 INFO kablam! su: No module specific data is present
Aug 01 21:37:26.487 INFO running `"docker" "rm" "-f" "225aad9c2dcd25629fd2675792b3cc704fb9fc417c6b91451a048475d95bff5e"`
Aug 01 21:37:26.685 INFO blam! 225aad9c2dcd25629fd2675792b3cc704fb9fc417c6b91451a048475d95bff5e