Aug 01 19:12:41.454 INFO checking voronoi-0.1.4 against 1.27.2 for lazy_static-1
Aug 01 19:12:41.454 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 19:12:41.454 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 19:12:41.454 INFO running `"docker" "create" "-v" "/tmp/crater.o0INNG6FCvu2:/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 01 19:12:41.714 INFO blam! a238801a137b616eb02c583225ec6bcec191bebe4c90bbf2f665e4ae7f6a45a4
Aug 01 19:12:41.717 INFO running `"docker" "start" "-a" "a238801a137b616eb02c583225ec6bcec191bebe4c90bbf2f665e4ae7f6a45a4"`
Aug 01 19:12:42.719 INFO kablam!     Checking voronoi v0.1.4 (file:///source)
Aug 01 19:12:44.938 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 19:12:44.938 INFO kablam!  --> benches/genvoronoi.rs:1:1
Aug 01 19:12:44.938 INFO kablam!   |
Aug 01 19:12:44.938 INFO kablam! 1 | #![feature(test)]
Aug 01 19:12:44.938 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 19:12:44.938 INFO kablam! 
Aug 01 19:12:44.938 INFO kablam! error: aborting due to previous error
Aug 01 19:12:44.938 INFO kablam! 
Aug 01 19:12:44.938 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 19:12:44.946 INFO kablam! error: Could not compile `voronoi`.
Aug 01 19:12:44.947 INFO kablam! 
Aug 01 19:12:44.947 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 19:12:44.948 INFO kablam! su: No module specific data is present
Aug 01 19:12:45.782 INFO running `"docker" "rm" "-f" "a238801a137b616eb02c583225ec6bcec191bebe4c90bbf2f665e4ae7f6a45a4"`
Aug 01 19:12:46.002 INFO blam! a238801a137b616eb02c583225ec6bcec191bebe4c90bbf2f665e4ae7f6a45a4