Aug 02 04:33:59.341 INFO checking md5-0.3.7 against 1.27.2 for lazy_static-1
Aug 02 04:33:59.341 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:33:59.341 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:33:59.341 INFO running `"docker" "create" "-v" "/tmp/crater.hKBcGcykV7ui:/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 04:33:59.574 INFO blam! d0f153a75b167a06a1f53285b4fd4e06a61cc1f4dc235c5a3025e387c72be117
Aug 02 04:33:59.577 INFO running `"docker" "start" "-a" "d0f153a75b167a06a1f53285b4fd4e06a61cc1f4dc235c5a3025e387c72be117"`
Aug 02 04:34:00.455 INFO kablam!     Checking md5 v0.3.7 (file:///source)
Aug 02 04:34:02.990 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:34:02.990 INFO kablam!  --> benches/lib.rs:1:1
Aug 02 04:34:02.990 INFO kablam!   |
Aug 02 04:34:02.990 INFO kablam! 1 | #![feature(test)]
Aug 02 04:34:02.990 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 04:34:02.991 INFO kablam! 
Aug 02 04:34:02.991 INFO kablam! error: aborting due to previous error
Aug 02 04:34:02.991 INFO kablam! 
Aug 02 04:34:02.991 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 04:34:02.997 INFO kablam! error: Could not compile `md5`.
Aug 02 04:34:02.998 INFO kablam! 
Aug 02 04:34:02.998 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 04:34:03.000 INFO kablam! su: No module specific data is present
Aug 02 04:34:03.687 INFO running `"docker" "rm" "-f" "d0f153a75b167a06a1f53285b4fd4e06a61cc1f4dc235c5a3025e387c72be117"`
Aug 02 04:34:03.860 INFO blam! d0f153a75b167a06a1f53285b4fd4e06a61cc1f4dc235c5a3025e387c72be117