Aug 01 23:25:33.165 INFO checking rustcastai-0.2.2 against 1.27.2 for lazy_static-1
Aug 01 23:25:33.165 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:25:33.165 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:25:33.165 INFO running `"docker" "create" "-v" "/tmp/crater.T9DeUqf3UnwN:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2:/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 23:25:33.427 INFO blam! d4aa8f85302a9f894dc0a24487fd772d68b7ce2690f3ce33f670c38d51743e9e
Aug 01 23:25:33.434 INFO running `"docker" "start" "-a" "d4aa8f85302a9f894dc0a24487fd772d68b7ce2690f3ce33f670c38d51743e9e"`
Aug 01 23:25:34.656 INFO kablam!     Checking rustcastai v0.2.2 (file:///source)
Aug 01 23:25:36.413 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:25:36.413 INFO kablam!  --> src/lib.rs:1:1
Aug 01 23:25:36.413 INFO kablam!   |
Aug 01 23:25:36.414 INFO kablam! 1 | #![feature(custom_attribute)]
Aug 01 23:25:36.414 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:25:36.414 INFO kablam! 
Aug 01 23:25:36.421 INFO kablam! error: aborting due to previous error
Aug 01 23:25:36.421 INFO kablam! 
Aug 01 23:25:36.421 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:25:36.429 INFO kablam! error: Could not compile `rustcastai`.
Aug 01 23:25:36.430 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 23:25:36.531 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:25:36.531 INFO kablam!  --> src/lib.rs:1:1
Aug 01 23:25:36.531 INFO kablam!   |
Aug 01 23:25:36.531 INFO kablam! 1 | #![feature(custom_attribute)]
Aug 01 23:25:36.531 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:25:36.531 INFO kablam! 
Aug 01 23:25:36.536 INFO kablam! error: aborting due to previous error
Aug 01 23:25:36.536 INFO kablam! 
Aug 01 23:25:36.536 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:25:36.558 INFO kablam! error: Could not compile `rustcastai`.
Aug 01 23:25:36.558 INFO kablam! 
Aug 01 23:25:36.558 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 23:25:36.560 INFO kablam! su: No module specific data is present
Aug 01 23:25:37.081 INFO running `"docker" "rm" "-f" "d4aa8f85302a9f894dc0a24487fd772d68b7ce2690f3ce33f670c38d51743e9e"`
Aug 01 23:25:37.252 INFO blam! d4aa8f85302a9f894dc0a24487fd772d68b7ce2690f3ce33f670c38d51743e9e