Aug 02 07:08:23.318 INFO checking http2parse-0.2.2 against 1.27.2 for lazy_static-1
Aug 02 07:08:23.318 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 07:08:23.318 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 07:08:23.318 INFO running `"docker" "create" "-v" "/tmp/crater.7QmWFY6keNcN:/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 07:08:23.490 INFO blam! 734a80233ae3764ea75782c89dd6a97be692df46ca16aa6fa9a20f5efb253b18
Aug 02 07:08:23.492 INFO running `"docker" "start" "-a" "734a80233ae3764ea75782c89dd6a97be692df46ca16aa6fa9a20f5efb253b18"`
Aug 02 07:08:24.659 INFO kablam!     Checking http2parse v0.2.2 (file:///source)
Aug 02 07:08:25.028 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 07:08:25.028 INFO kablam!  --> src/lib.rs:2:19
Aug 02 07:08:25.028 INFO kablam!   |
Aug 02 07:08:25.028 INFO kablam! 2 | #![cfg_attr(test, feature(test))]
Aug 02 07:08:25.028 INFO kablam!   |                   ^^^^^^^^^^^^^^
Aug 02 07:08:25.028 INFO kablam! 
Aug 02 07:08:25.031 INFO kablam! error: aborting due to previous error
Aug 02 07:08:25.031 INFO kablam! 
Aug 02 07:08:25.031 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 07:08:25.038 INFO kablam! error: Could not compile `http2parse`.
Aug 02 07:08:25.038 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 07:08:25.520 INFO kablam! error: build failed
Aug 02 07:08:25.526 INFO kablam! su: No module specific data is present
Aug 02 07:08:26.785 INFO running `"docker" "rm" "-f" "734a80233ae3764ea75782c89dd6a97be692df46ca16aa6fa9a20f5efb253b18"`
Aug 02 07:08:26.888 INFO blam! 734a80233ae3764ea75782c89dd6a97be692df46ca16aa6fa9a20f5efb253b18