Aug 01 21:59:23.350 INFO checking slot-0.2.2 against 1.27.2+tmplazy for lazy_static-1
Aug 01 21:59:23.350 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:59:23.350 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:59:23.350 INFO running `"docker" "create" "-v" "/tmp/crater.v6q7xRiy9SJj:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2+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 21:59:23.569 INFO blam! d314cdf7e8c0b8afb9edde30dc4546445484e2b3e28a8f99e27a0da8f0cf7e55
Aug 01 21:59:23.570 INFO running `"docker" "start" "-a" "d314cdf7e8c0b8afb9edde30dc4546445484e2b3e28a8f99e27a0da8f0cf7e55"`
Aug 01 21:59:25.020 INFO kablam!     Checking slot v0.2.2 (file:///source)
Aug 01 21:59:25.268 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:59:25.268 INFO kablam!  --> src/lib.rs:3:1
Aug 01 21:59:25.268 INFO kablam!   |
Aug 01 21:59:25.268 INFO kablam! 3 | #![feature(untagged_unions)]
Aug 01 21:59:25.268 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:59:25.270 INFO kablam! 
Aug 01 21:59:25.281 INFO kablam! error: aborting due to previous error
Aug 01 21:59:25.281 INFO kablam! 
Aug 01 21:59:25.281 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:59:25.281 INFO kablam! error: Could not compile `slot`.
Aug 01 21:59:25.281 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:59:25.410 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:59:25.410 INFO kablam!  --> src/lib.rs:3:1
Aug 01 21:59:25.410 INFO kablam!   |
Aug 01 21:59:25.410 INFO kablam! 3 | #![feature(untagged_unions)]
Aug 01 21:59:25.410 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:59:25.411 INFO kablam! 
Aug 01 21:59:25.411 INFO kablam! error: aborting due to previous error
Aug 01 21:59:25.411 INFO kablam! 
Aug 01 21:59:25.412 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:59:25.419 INFO kablam! error: Could not compile `slot`.
Aug 01 21:59:25.419 INFO kablam! 
Aug 01 21:59:25.419 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 21:59:25.421 INFO kablam! su: No module specific data is present
Aug 01 21:59:25.871 INFO running `"docker" "rm" "-f" "d314cdf7e8c0b8afb9edde30dc4546445484e2b3e28a8f99e27a0da8f0cf7e55"`
Aug 01 21:59:26.006 INFO blam! d314cdf7e8c0b8afb9edde30dc4546445484e2b3e28a8f99e27a0da8f0cf7e55