Aug 02 02:06:50.837 INFO checking polytype-6.0.0 against 1.27.2+tmplazy for lazy_static-1
Aug 02 02:06:50.837 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:06:50.837 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:06:50.838 INFO running `"docker" "create" "-v" "/tmp/crater.coRreAteSpA7:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2+tmplazy:/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 02:06:51.022 INFO blam! 4cc118561c85325677943a05c8d3833193a1396f612f87f46c6f03d915ceaaa5
Aug 02 02:06:51.026 INFO running `"docker" "start" "-a" "4cc118561c85325677943a05c8d3833193a1396f612f87f46c6f03d915ceaaa5"`
Aug 02 02:06:52.593 INFO kablam!     Checking nom v4.0.0
Aug 02 02:06:56.380 INFO kablam!     Checking polytype v6.0.0 (file:///source)
Aug 02 02:06:59.707 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:06:59.707 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 02:06:59.707 INFO kablam!   |
Aug 02 02:06:59.707 INFO kablam! 1 | #![feature(test)]
Aug 02 02:06:59.708 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 02:06:59.708 INFO kablam! 
Aug 02 02:06:59.708 INFO kablam! error: aborting due to previous error
Aug 02 02:06:59.708 INFO kablam! 
Aug 02 02:06:59.708 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 02:06:59.721 INFO kablam! error: Could not compile `polytype`.
Aug 02 02:06:59.721 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 02:07:00.601 INFO kablam! error: build failed
Aug 02 02:07:00.603 INFO kablam! su: No module specific data is present
Aug 02 02:07:01.120 INFO running `"docker" "rm" "-f" "4cc118561c85325677943a05c8d3833193a1396f612f87f46c6f03d915ceaaa5"`
Aug 02 02:07:01.267 INFO blam! 4cc118561c85325677943a05c8d3833193a1396f612f87f46c6f03d915ceaaa5