Aug 01 22:14:33.205 INFO checking signals-0.0.1 against 1.27.2+tmplazy for lazy_static-1
Aug 01 22:14:33.205 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:14:33.206 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:14:33.206 INFO running `"docker" "create" "-v" "/tmp/crater.bIv799Byq6oI:/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 01 22:14:33.478 INFO blam! e0f0263c53475fc002d676c0c9e9e8bc3d2f1bfec516a29a92952852487e3aac
Aug 01 22:14:33.483 INFO running `"docker" "start" "-a" "e0f0263c53475fc002d676c0c9e9e8bc3d2f1bfec516a29a92952852487e3aac"`
Aug 01 22:14:34.501 INFO kablam!     Checking signals v0.0.1 (file:///source)
Aug 01 22:14:35.096 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:14:35.096 INFO kablam!   --> src/lib.rs:59:1
Aug 01 22:14:35.096 INFO kablam!    |
Aug 01 22:14:35.097 INFO kablam! 59 | #![feature(conservative_impl_trait)]
Aug 01 22:14:35.097 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 22:14:35.097 INFO kablam! 
Aug 01 22:14:35.097 INFO kablam! error: aborting due to previous error
Aug 01 22:14:35.097 INFO kablam! 
Aug 01 22:14:35.097 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:14:35.104 INFO kablam! error: Could not compile `signals`.
Aug 01 22:14:35.104 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 22:14:35.307 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:14:35.307 INFO kablam!   --> src/lib.rs:59:1
Aug 01 22:14:35.307 INFO kablam!    |
Aug 01 22:14:35.307 INFO kablam! 59 | #![feature(conservative_impl_trait)]
Aug 01 22:14:35.307 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 22:14:35.307 INFO kablam! 
Aug 01 22:14:35.308 INFO kablam! error: aborting due to previous error
Aug 01 22:14:35.308 INFO kablam! 
Aug 01 22:14:35.308 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:14:35.317 INFO kablam! error: Could not compile `signals`.
Aug 01 22:14:35.317 INFO kablam! 
Aug 01 22:14:35.317 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 22:14:35.324 INFO kablam! su: No module specific data is present
Aug 01 22:14:35.830 INFO running `"docker" "rm" "-f" "e0f0263c53475fc002d676c0c9e9e8bc3d2f1bfec516a29a92952852487e3aac"`
Aug 01 22:14:35.988 INFO blam! e0f0263c53475fc002d676c0c9e9e8bc3d2f1bfec516a29a92952852487e3aac