Aug 01 23:57:18.602 INFO checking ruma-events-0.10.0 against 1.27.2 for lazy_static-1
Aug 01 23:57:18.603 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:57:18.603 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:57:18.603 INFO running `"docker" "create" "-v" "/tmp/crater.A2fVTLjdaA79:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2:/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 23:57:18.811 INFO blam! 9a345f000385bc06506a40096b936a55d15bf508e24b7373ff7eb5023defea8c
Aug 01 23:57:18.813 INFO running `"docker" "start" "-a" "9a345f000385bc06506a40096b936a55d15bf508e24b7373ff7eb5023defea8c"`
Aug 01 23:57:20.818 INFO kablam!     Checking ruma-identifiers v0.11.0
Aug 01 23:57:20.818 INFO kablam!     Checking ruma-signatures v0.4.0
Aug 01 23:57:21.730 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:57:21.730 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ruma-identifiers-0.11.0/src/lib.rs:4:1
Aug 01 23:57:21.730 INFO kablam!   |
Aug 01 23:57:21.730 INFO kablam! 4 | #![feature(try_from)]
Aug 01 23:57:21.730 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:57:21.730 INFO kablam! 
Aug 01 23:57:21.732 INFO kablam! error: aborting due to previous error
Aug 01 23:57:21.732 INFO kablam! 
Aug 01 23:57:21.732 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:57:21.739 INFO kablam! error: Could not compile `ruma-identifiers`.
Aug 01 23:57:21.739 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 23:57:22.122 INFO kablam! error: build failed
Aug 01 23:57:22.124 INFO kablam! su: No module specific data is present
Aug 01 23:57:22.658 INFO running `"docker" "rm" "-f" "9a345f000385bc06506a40096b936a55d15bf508e24b7373ff7eb5023defea8c"`
Aug 01 23:57:22.790 INFO blam! 9a345f000385bc06506a40096b936a55d15bf508e24b7373ff7eb5023defea8c