Aug 02 05:52:35.267 INFO checking lambda_calculus-2.2.0 against 1.27.2 for lazy_static-1
Aug 02 05:52:35.268 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:52:35.268 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:52:35.268 INFO running `"docker" "create" "-v" "/tmp/crater.q5PS73beo5Pq:/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 02 05:52:35.470 INFO blam! 91dd9b597e8eb01c7248b3e671f5ffffd044f5bbb44fc5c9ca40753d7526fe70
Aug 02 05:52:35.472 INFO running `"docker" "start" "-a" "91dd9b597e8eb01c7248b3e671f5ffffd044f5bbb44fc5c9ca40753d7526fe70"`
Aug 02 05:52:36.832 INFO kablam!     Checking lambda_calculus v2.2.0 (file:///source)
Aug 02 05:52:40.186 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 05:52:40.186 INFO kablam!  --> benches/option.rs:3:1
Aug 02 05:52:40.186 INFO kablam!   |
Aug 02 05:52:40.186 INFO kablam! 3 | #![feature(test)]
Aug 02 05:52:40.186 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 05:52:40.187 INFO kablam! 
Aug 02 05:52:40.187 INFO kablam! error: aborting due to previous error
Aug 02 05:52:40.187 INFO kablam! 
Aug 02 05:52:40.188 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 05:52:40.195 INFO kablam! error: Could not compile `lambda_calculus`.
Aug 02 05:52:40.196 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 05:52:40.693 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 05:52:40.693 INFO kablam!  --> benches/parsing.rs:1:1
Aug 02 05:52:40.693 INFO kablam!   |
Aug 02 05:52:40.693 INFO kablam! 1 | #![feature(test)]
Aug 02 05:52:40.693 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 05:52:40.693 INFO kablam! 
Aug 02 05:52:40.694 INFO kablam! error: aborting due to previous error
Aug 02 05:52:40.694 INFO kablam! 
Aug 02 05:52:40.694 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 05:52:40.701 INFO kablam! error: Could not compile `lambda_calculus`.
Aug 02 05:52:40.715 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 05:52:40.796 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 05:52:40.796 INFO kablam!  --> benches/pair_list.rs:3:1
Aug 02 05:52:40.796 INFO kablam!   |
Aug 02 05:52:40.796 INFO kablam! 3 | #![feature(test)]
Aug 02 05:52:40.796 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 05:52:40.796 INFO kablam! 
Aug 02 05:52:40.796 INFO kablam! error: aborting due to previous error
Aug 02 05:52:40.796 INFO kablam! 
Aug 02 05:52:40.796 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 05:52:40.798 INFO kablam! error: Could not compile `lambda_calculus`.
Aug 02 05:52:40.799 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 05:52:40.897 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 05:52:40.897 INFO kablam!  --> benches/num.rs:3:1
Aug 02 05:52:40.897 INFO kablam!   |
Aug 02 05:52:40.897 INFO kablam! 3 | #![feature(test)]
Aug 02 05:52:40.897 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 05:52:40.897 INFO kablam! 
Aug 02 05:52:40.897 INFO kablam! error: aborting due to previous error
Aug 02 05:52:40.897 INFO kablam! 
Aug 02 05:52:40.898 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 05:52:40.898 INFO kablam! error: Could not compile `lambda_calculus`.
Aug 02 05:52:40.898 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 05:52:41.946 INFO kablam! error: build failed
Aug 02 05:52:41.948 INFO kablam! su: No module specific data is present
Aug 02 05:52:42.763 INFO running `"docker" "rm" "-f" "91dd9b597e8eb01c7248b3e671f5ffffd044f5bbb44fc5c9ca40753d7526fe70"`
Aug 02 05:52:42.927 INFO blam! 91dd9b597e8eb01c7248b3e671f5ffffd044f5bbb44fc5c9ca40753d7526fe70