Aug 02 05:54:36.087 INFO checking kv_cab-0.6.0 against 1.27.2 for lazy_static-1
Aug 02 05:54:36.087 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:54:36.087 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:54:36.087 INFO running `"docker" "create" "-v" "/tmp/crater.wF1HNRKhNCvg:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2:/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 05:54:36.371 INFO blam! 42efaf6dfc4b20b829cb2b7b031beb39664877129842415f22d6970369948244
Aug 02 05:54:36.373 INFO running `"docker" "start" "-a" "42efaf6dfc4b20b829cb2b7b031beb39664877129842415f22d6970369948244"`
Aug 02 05:54:37.603 INFO kablam!     Checking bincode v0.7.0
Aug 02 05:54:39.286 INFO kablam!     Checking kv_cab v0.6.0 (file:///source)
Aug 02 05:54:43.891 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 05:54:43.891 INFO kablam!  --> benches/benches.rs:2:1
Aug 02 05:54:43.891 INFO kablam!   |
Aug 02 05:54:43.892 INFO kablam! 2 | #![feature(test)]
Aug 02 05:54:43.892 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 05:54:43.892 INFO kablam! 
Aug 02 05:54:43.892 INFO kablam! error: aborting due to previous error
Aug 02 05:54:43.892 INFO kablam! 
Aug 02 05:54:43.892 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 05:54:43.913 INFO kablam! error: Could not compile `kv_cab`.
Aug 02 05:54:43.914 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 05:54:44.416 INFO kablam! error: build failed
Aug 02 05:54:44.421 INFO kablam! su: No module specific data is present
Aug 02 05:54:44.954 INFO running `"docker" "rm" "-f" "42efaf6dfc4b20b829cb2b7b031beb39664877129842415f22d6970369948244"`
Aug 02 05:54:45.135 INFO blam! 42efaf6dfc4b20b829cb2b7b031beb39664877129842415f22d6970369948244