Aug 02 00:25:27.617 INFO checking roaring-0.5.2 against 1.27.2 for lazy_static-1
Aug 02 00:25:27.617 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:25:27.617 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:25:27.617 INFO running `"docker" "create" "-v" "/tmp/crater.yiavNLB2N6Ak:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2:/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 00:25:27.899 INFO blam! 4d11873803a230731bab7a3e6a12a0da5b08a6530e06ea7d55ebd2c5dda67f9d
Aug 02 00:25:27.901 INFO running `"docker" "start" "-a" "4d11873803a230731bab7a3e6a12a0da5b08a6530e06ea7d55ebd2c5dda67f9d"`
Aug 02 00:25:29.398 INFO kablam!     Checking roaring v0.5.2 (file:///source)
Aug 02 00:25:38.775 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 00:25:38.775 INFO kablam!  --> benches/lib.rs:1:1
Aug 02 00:25:38.775 INFO kablam!   |
Aug 02 00:25:38.775 INFO kablam! 1 | #![feature(test)]
Aug 02 00:25:38.775 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 00:25:38.775 INFO kablam! 
Aug 02 00:25:38.776 INFO kablam! error: aborting due to previous error
Aug 02 00:25:38.786 INFO kablam! 
Aug 02 00:25:38.786 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 00:25:38.825 INFO kablam! error: Could not compile `roaring`.
Aug 02 00:25:38.828 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 00:25:40.743 INFO kablam! error: build failed
Aug 02 00:25:40.747 INFO kablam! su: No module specific data is present
Aug 02 00:25:41.495 INFO running `"docker" "rm" "-f" "4d11873803a230731bab7a3e6a12a0da5b08a6530e06ea7d55ebd2c5dda67f9d"`
Aug 02 00:25:41.650 INFO blam! 4d11873803a230731bab7a3e6a12a0da5b08a6530e06ea7d55ebd2c5dda67f9d