Aug 01 20:53:51.502 INFO checking table-0.1.1 against 1.27.2+tmplazy for lazy_static-1
Aug 01 20:53:51.502 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:53:51.502 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:53:51.502 INFO running `"docker" "create" "-v" "/tmp/crater.oVUeapU5fazE:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2+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 20:53:51.775 INFO blam! b7dce688464bbba154f8f9e056353100a6611f0e90334a862878b3ed79c07c46
Aug 01 20:53:51.777 INFO running `"docker" "start" "-a" "b7dce688464bbba154f8f9e056353100a6611f0e90334a862878b3ed79c07c46"`
Aug 01 20:53:52.601 INFO kablam!     Checking table v0.1.1 (file:///source)
Aug 01 20:53:53.446 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:53:53.446 INFO kablam!  --> src/lib.rs:2:19
Aug 01 20:53:53.446 INFO kablam!   |
Aug 01 20:53:53.447 INFO kablam! 2 | #![cfg_attr(test, feature(test))]
Aug 01 20:53:53.447 INFO kablam!   |                   ^^^^^^^^^^^^^^
Aug 01 20:53:53.447 INFO kablam! 
Aug 01 20:53:53.448 INFO kablam! error: aborting due to previous error
Aug 01 20:53:53.448 INFO kablam! 
Aug 01 20:53:53.448 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:53:53.475 INFO kablam! error: Could not compile `table`.
Aug 01 20:53:53.475 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 20:53:53.673 INFO kablam! error: build failed
Aug 01 20:53:53.675 INFO kablam! su: No module specific data is present
Aug 01 20:53:54.409 INFO running `"docker" "rm" "-f" "b7dce688464bbba154f8f9e056353100a6611f0e90334a862878b3ed79c07c46"`
Aug 01 20:53:54.593 INFO blam! b7dce688464bbba154f8f9e056353100a6611f0e90334a862878b3ed79c07c46