Aug 02 13:22:07.324 INFO checking cargo-ipcgen-swift-0.0.1 against 1.27.2+tmplazy for lazy_static-1
Aug 02 13:22:07.324 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:22:07.324 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:22:07.324 INFO running `"docker" "create" "-v" "/tmp/crater.4LA75J4c9lYs:/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 13:22:07.574 INFO blam! 0c23f1c2c1767127151e730ca249b18b5c2677852b519e7e471b35cdd78bd8f5
Aug 02 13:22:07.576 INFO running `"docker" "start" "-a" "0c23f1c2c1767127151e730ca249b18b5c2677852b519e7e471b35cdd78bd8f5"`
Aug 02 13:22:08.657 INFO kablam!     Checking rls-span v0.4.0
Aug 02 13:22:08.668 INFO kablam!    Compiling derive-new v0.5.5
Aug 02 13:22:09.240 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 13:22:09.240 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/rls-span-0.4.0/src/lib.rs:12:1
Aug 02 13:22:09.240 INFO kablam!    |
Aug 02 13:22:09.240 INFO kablam! 12 | #![feature(proc_macro)]
Aug 02 13:22:09.240 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 13:22:09.241 INFO kablam! 
Aug 02 13:22:09.244 INFO kablam! error: aborting due to previous error
Aug 02 13:22:09.244 INFO kablam! 
Aug 02 13:22:09.245 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 13:22:09.252 INFO kablam! error: Could not compile `rls-span`.
Aug 02 13:22:09.252 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 13:22:14.248 INFO kablam! error: build failed
Aug 02 13:22:14.250 INFO kablam! su: No module specific data is present
Aug 02 13:22:14.866 INFO running `"docker" "rm" "-f" "0c23f1c2c1767127151e730ca249b18b5c2677852b519e7e471b35cdd78bd8f5"`
Aug 02 13:22:15.025 INFO blam! 0c23f1c2c1767127151e730ca249b18b5c2677852b519e7e471b35cdd78bd8f5