Aug 02 14:22:49.574 INFO checking barrel-0.2.0 against 1.27.2 for lazy_static-1
Aug 02 14:22:49.574 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:22:49.574 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:22:49.574 INFO running `"docker" "create" "-v" "/tmp/crater.m0snR6ut8m1H:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2:/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 02 14:22:49.899 INFO blam! 5b86fb5a29a6cbfefec7cb76050d6b87d0f06e3c30583f2f37fd0981daf879d4
Aug 02 14:22:49.902 INFO running `"docker" "start" "-a" "5b86fb5a29a6cbfefec7cb76050d6b87d0f06e3c30583f2f37fd0981daf879d4"`
Aug 02 14:22:51.436 INFO kablam!     Checking barrel v0.2.0 (file:///source)
Aug 02 14:22:52.005 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:22:52.005 INFO kablam!   --> src/lib.rs:68:1
Aug 02 14:22:52.005 INFO kablam!    |
Aug 02 14:22:52.005 INFO kablam! 68 | #![feature(box_syntax)]
Aug 02 14:22:52.005 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 14:22:52.005 INFO kablam! 
Aug 02 14:22:52.005 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:22:52.005 INFO kablam!   --> src/lib.rs:69:1
Aug 02 14:22:52.005 INFO kablam!    |
Aug 02 14:22:52.005 INFO kablam! 69 | #![feature(clone_closures)]
Aug 02 14:22:52.005 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 14:22:52.005 INFO kablam! 
Aug 02 14:22:52.006 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:22:52.006 INFO kablam!   --> src/lib.rs:70:1
Aug 02 14:22:52.006 INFO kablam!    |
Aug 02 14:22:52.006 INFO kablam! 70 | #![feature(custom_attribute)]
Aug 02 14:22:52.006 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 14:22:52.006 INFO kablam! 
Aug 02 14:22:52.009 INFO kablam! error: aborting due to 3 previous errors
Aug 02 14:22:52.010 INFO kablam! 
Aug 02 14:22:52.010 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 14:22:52.016 INFO kablam! error: Could not compile `barrel`.
Aug 02 14:22:52.016 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 14:22:52.091 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:22:52.091 INFO kablam!   --> src/lib.rs:68:1
Aug 02 14:22:52.091 INFO kablam!    |
Aug 02 14:22:52.091 INFO kablam! 68 | #![feature(box_syntax)]
Aug 02 14:22:52.091 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 14:22:52.091 INFO kablam! 
Aug 02 14:22:52.091 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:22:52.091 INFO kablam!   --> src/lib.rs:69:1
Aug 02 14:22:52.091 INFO kablam!    |
Aug 02 14:22:52.091 INFO kablam! 69 | #![feature(clone_closures)]
Aug 02 14:22:52.091 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 14:22:52.091 INFO kablam! 
Aug 02 14:22:52.091 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:22:52.091 INFO kablam!   --> src/lib.rs:70:1
Aug 02 14:22:52.091 INFO kablam!    |
Aug 02 14:22:52.091 INFO kablam! 70 | #![feature(custom_attribute)]
Aug 02 14:22:52.091 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 14:22:52.091 INFO kablam! 
Aug 02 14:22:52.097 INFO kablam! error: aborting due to 3 previous errors
Aug 02 14:22:52.097 INFO kablam! 
Aug 02 14:22:52.097 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 14:22:52.104 INFO kablam! error: Could not compile `barrel`.
Aug 02 14:22:52.104 INFO kablam! 
Aug 02 14:22:52.104 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 14:22:52.105 INFO kablam! su: No module specific data is present
Aug 02 14:22:52.717 INFO running `"docker" "rm" "-f" "5b86fb5a29a6cbfefec7cb76050d6b87d0f06e3c30583f2f37fd0981daf879d4"`
Aug 02 14:22:52.885 INFO blam! 5b86fb5a29a6cbfefec7cb76050d6b87d0f06e3c30583f2f37fd0981daf879d4