Aug 02 04:22:03.857 INFO checking min-max-heap-1.2.0 against 1.27.2 for lazy_static-1
Aug 02 04:22:03.857 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:22:03.857 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:22:03.858 INFO running `"docker" "create" "-v" "/tmp/crater.y8WT4VlJuJoD:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2:/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 04:22:04.106 INFO blam! 3014af856908d227f97377de0d7f56ac3ccd8e2a0c142730a35c2d3b79de1bda
Aug 02 04:22:04.107 INFO running `"docker" "start" "-a" "3014af856908d227f97377de0d7f56ac3ccd8e2a0c142730a35c2d3b79de1bda"`
Aug 02 04:22:06.003 INFO kablam!     Checking min-max-heap v1.2.0 (file:///source)
Aug 02 04:22:07.954 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:22:07.954 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 04:22:07.954 INFO kablam!   |
Aug 02 04:22:07.954 INFO kablam! 1 | #![feature(test)]
Aug 02 04:22:07.954 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 04:22:07.968 INFO kablam! 
Aug 02 04:22:07.969 INFO kablam! error: aborting due to previous error
Aug 02 04:22:07.969 INFO kablam! 
Aug 02 04:22:07.970 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 04:22:07.977 INFO kablam! error: Could not compile `min-max-heap`.
Aug 02 04:22:07.977 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 04:22:08.359 INFO kablam! error: build failed
Aug 02 04:22:08.360 INFO kablam! su: No module specific data is present
Aug 02 04:22:09.131 INFO running `"docker" "rm" "-f" "3014af856908d227f97377de0d7f56ac3ccd8e2a0c142730a35c2d3b79de1bda"`
Aug 02 04:22:09.308 INFO blam! 3014af856908d227f97377de0d7f56ac3ccd8e2a0c142730a35c2d3b79de1bda