Aug 02 06:38:05.771 INFO checking intmap-0.4.0 against 1.27.2 for lazy_static-1
Aug 02 06:38:05.771 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:38:05.772 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:38:05.772 INFO running `"docker" "create" "-v" "/tmp/crater.e4IkNHgQpxAb:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-5/1.27.2:/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 06:38:06.143 INFO blam! b58f9db0d56c5046a97999b7bbaf5b48dbfca82d3fde049be82ae145cf3187a4
Aug 02 06:38:06.146 INFO running `"docker" "start" "-a" "b58f9db0d56c5046a97999b7bbaf5b48dbfca82d3fde049be82ae145cf3187a4"`
Aug 02 06:38:07.671 INFO kablam!     Checking intmap v0.4.0 (file:///source)
Aug 02 06:38:08.867 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:38:08.868 INFO kablam!  --> benches/basic_bench.rs:1:1
Aug 02 06:38:08.868 INFO kablam!   |
Aug 02 06:38:08.868 INFO kablam! 1 | #![feature(test)]
Aug 02 06:38:08.868 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 06:38:08.868 INFO kablam! 
Aug 02 06:38:08.868 INFO kablam! error: aborting due to previous error
Aug 02 06:38:08.868 INFO kablam! 
Aug 02 06:38:08.868 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 06:38:08.875 INFO kablam! error: Could not compile `intmap`.
Aug 02 06:38:08.875 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 06:38:09.006 INFO kablam! error: build failed
Aug 02 06:38:09.007 INFO kablam! su: No module specific data is present
Aug 02 06:38:09.802 INFO running `"docker" "rm" "-f" "b58f9db0d56c5046a97999b7bbaf5b48dbfca82d3fde049be82ae145cf3187a4"`
Aug 02 06:38:09.957 INFO blam! b58f9db0d56c5046a97999b7bbaf5b48dbfca82d3fde049be82ae145cf3187a4