Aug 02 11:07:51.216 INFO checking dwt-0.5.2 against 1.27.2 for lazy_static-1
Aug 02 11:07:51.216 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 11:07:51.216 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 11:07:51.217 INFO running `"docker" "create" "-v" "/tmp/crater.gwK6QcLPBfVf:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2:/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 11:07:51.483 INFO blam! f52df062447baefcac4fb9636ac85eb3acff00ff6879bd657f6bae5b93fec3a8
Aug 02 11:07:51.485 INFO running `"docker" "start" "-a" "f52df062447baefcac4fb9636ac85eb3acff00ff6879bd657f6bae5b93fec3a8"`
Aug 02 11:07:52.831 INFO kablam!     Checking dwt v0.5.2 (file:///source)
Aug 02 11:07:54.424 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 11:07:54.425 INFO kablam!  --> benches/lib.rs:1:1
Aug 02 11:07:54.425 INFO kablam!   |
Aug 02 11:07:54.425 INFO kablam! 1 | #![feature(test)]
Aug 02 11:07:54.425 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 11:07:54.425 INFO kablam! 
Aug 02 11:07:54.425 INFO kablam! error: aborting due to previous error
Aug 02 11:07:54.425 INFO kablam! 
Aug 02 11:07:54.425 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 11:07:54.455 INFO kablam! error: Could not compile `dwt`.
Aug 02 11:07:54.455 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 11:07:54.609 INFO kablam! error: build failed
Aug 02 11:07:54.609 INFO kablam! su: No module specific data is present
Aug 02 11:07:55.274 INFO running `"docker" "rm" "-f" "f52df062447baefcac4fb9636ac85eb3acff00ff6879bd657f6bae5b93fec3a8"`
Aug 02 11:07:55.467 INFO blam! f52df062447baefcac4fb9636ac85eb3acff00ff6879bd657f6bae5b93fec3a8