Aug 02 14:02:20.748 INFO checking bitonic-0.2.0 against 1.27.2 for lazy_static-1
Aug 02 14:02:20.748 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:02:20.748 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:02:20.748 INFO running `"docker" "create" "-v" "/tmp/crater.Pbmsbg7jGj6M:/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 14:02:20.989 INFO blam! bfd07d32b7663e9a73c2d62b72c0333a85064ccecf6b677c7850c21e504064f7
Aug 02 14:02:20.992 INFO running `"docker" "start" "-a" "bfd07d32b7663e9a73c2d62b72c0333a85064ccecf6b677c7850c21e504064f7"`
Aug 02 14:02:22.089 INFO kablam!     Checking bitonic v0.2.0 (file:///source)
Aug 02 14:02:25.752 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:02:25.752 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 14:02:25.752 INFO kablam!   |
Aug 02 14:02:25.752 INFO kablam! 1 | #![feature(test)]
Aug 02 14:02:25.752 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 14:02:25.752 INFO kablam! 
Aug 02 14:02:25.752 INFO kablam! error: aborting due to previous error
Aug 02 14:02:25.752 INFO kablam! 
Aug 02 14:02:25.752 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 14:02:25.764 INFO kablam! error: Could not compile `bitonic`.
Aug 02 14:02:25.764 INFO kablam! 
Aug 02 14:02:25.764 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 14:02:25.766 INFO kablam! su: No module specific data is present
Aug 02 14:02:26.396 INFO running `"docker" "rm" "-f" "bfd07d32b7663e9a73c2d62b72c0333a85064ccecf6b677c7850c21e504064f7"`
Aug 02 14:02:26.609 INFO blam! bfd07d32b7663e9a73c2d62b72c0333a85064ccecf6b677c7850c21e504064f7