Aug 02 04:59:56.915 INFO checking lopdf-0.15.2 against 1.27.2 for lazy_static-1
Aug 02 04:59:56.915 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:59:56.915 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:59:56.915 INFO running `"docker" "create" "-v" "/tmp/crater.xF96o0Us2in1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2:/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 04:59:57.256 INFO blam! 9e7e2258d9e39ef9be9481c78e0f16b3161d521555c441c830dc171f51b77bda
Aug 02 04:59:57.258 INFO running `"docker" "start" "-a" "9e7e2258d9e39ef9be9481c78e0f16b3161d521555c441c830dc171f51b77bda"`
Aug 02 04:59:58.422 INFO kablam!     Checking lopdf v0.15.2 (file:///source)
Aug 02 05:00:08.218 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 05:00:08.218 INFO kablam!  --> benches/datetime.rs:1:1
Aug 02 05:00:08.218 INFO kablam!   |
Aug 02 05:00:08.218 INFO kablam! 1 | #![feature(test)]
Aug 02 05:00:08.218 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 05:00:08.219 INFO kablam! 
Aug 02 05:00:08.220 INFO kablam! error: aborting due to previous error
Aug 02 05:00:08.220 INFO kablam! 
Aug 02 05:00:08.220 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 05:00:08.233 INFO kablam! error: Could not compile `lopdf`.
Aug 02 05:00:08.233 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 05:00:08.839 INFO kablam! error: build failed
Aug 02 05:00:08.840 INFO kablam! su: No module specific data is present
Aug 02 05:00:09.600 INFO running `"docker" "rm" "-f" "9e7e2258d9e39ef9be9481c78e0f16b3161d521555c441c830dc171f51b77bda"`
Aug 02 05:00:09.735 INFO blam! 9e7e2258d9e39ef9be9481c78e0f16b3161d521555c441c830dc171f51b77bda