Aug 01 23:57:16.684 INFO checking ruma-events-0.9.0 against 1.27.2 for lazy_static-1
Aug 01 23:57:16.684 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:57:16.684 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:57:16.684 INFO running `"docker" "create" "-v" "/tmp/crater.bl76hlDBSULF:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-2/1.27.2:/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 01 23:57:16.946 INFO blam! cb79c38ccc7ab8d13b7f8c800cefb07b3f1dc5ebad33c8d8d9aac84d3da4121c
Aug 01 23:57:16.948 INFO running `"docker" "start" "-a" "cb79c38ccc7ab8d13b7f8c800cefb07b3f1dc5ebad33c8d8d9aac84d3da4121c"`
Aug 01 23:57:18.206 INFO kablam!     Checking ruma-identifiers v0.11.0
Aug 01 23:57:18.206 INFO kablam!    Compiling ring v0.9.7
Aug 01 23:57:18.779 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:57:18.779 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ruma-identifiers-0.11.0/src/lib.rs:4:1
Aug 01 23:57:18.779 INFO kablam!   |
Aug 01 23:57:18.779 INFO kablam! 4 | #![feature(try_from)]
Aug 01 23:57:18.779 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:57:18.779 INFO kablam! 
Aug 01 23:57:18.781 INFO kablam! error: aborting due to previous error
Aug 01 23:57:18.781 INFO kablam! 
Aug 01 23:57:18.782 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:57:18.787 INFO kablam! error: Could not compile `ruma-identifiers`.
Aug 01 23:57:18.787 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 23:57:22.814 INFO kablam! error: build failed
Aug 01 23:57:22.814 INFO kablam! su: No module specific data is present
Aug 01 23:57:23.443 INFO running `"docker" "rm" "-f" "cb79c38ccc7ab8d13b7f8c800cefb07b3f1dc5ebad33c8d8d9aac84d3da4121c"`
Aug 01 23:57:23.554 INFO blam! cb79c38ccc7ab8d13b7f8c800cefb07b3f1dc5ebad33c8d8d9aac84d3da4121c