Aug 02 00:29:41.581 INFO checking risp-0.7.0 against 1.27.2+tmplazy for lazy_static-1
Aug 02 00:29:41.581 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:29:41.581 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:29:41.581 INFO running `"docker" "create" "-v" "/tmp/crater.DavsCDauAdxv:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-2/1.27.2+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 00:29:41.827 INFO blam! 3fcf15899456c1f89bddc34a7632ab30a420d3da5160cc115a12bc4cb7d335ed
Aug 02 00:29:41.829 INFO running `"docker" "start" "-a" "3fcf15899456c1f89bddc34a7632ab30a420d3da5160cc115a12bc4cb7d335ed"`
Aug 02 00:29:43.109 INFO kablam!     Checking risp v0.7.0 (file:///source)
Aug 02 00:29:47.525 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 00:29:47.525 INFO kablam!  --> benches/example.rs:1:1
Aug 02 00:29:47.525 INFO kablam!   |
Aug 02 00:29:47.526 INFO kablam! 1 | #![feature(test)]
Aug 02 00:29:47.526 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 00:29:47.526 INFO kablam! 
Aug 02 00:29:47.541 INFO kablam! error: aborting due to previous error
Aug 02 00:29:47.541 INFO kablam! 
Aug 02 00:29:47.541 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 00:29:47.560 INFO kablam! error: Could not compile `risp`.
Aug 02 00:29:47.560 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 00:29:49.949 INFO kablam! error: build failed
Aug 02 00:29:49.952 INFO kablam! su: No module specific data is present
Aug 02 00:29:50.523 INFO running `"docker" "rm" "-f" "3fcf15899456c1f89bddc34a7632ab30a420d3da5160cc115a12bc4cb7d335ed"`
Aug 02 00:29:50.666 INFO blam! 3fcf15899456c1f89bddc34a7632ab30a420d3da5160cc115a12bc4cb7d335ed