Aug 31 15:27:34.329 INFO checking rust-sort-0.1.4 against try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b for pr-53578
Aug 31 15:27:34.329 INFO running: cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets
Aug 31 15:27:34.329 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53578/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-2/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/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" "-e" "USER_ID=500" "-e" "CMD=cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 15:27:34.497 INFO blam! 5962f2837374115615b954beed9ef91f55695b41e0f44030c503e83b94f16695
Aug 31 15:27:34.499 INFO running `"docker" "start" "-a" "5962f2837374115615b954beed9ef91f55695b41e0f44030c503e83b94f16695"`
Aug 31 15:27:35.100 INFO kablam!     Checking commandext v0.1.0
Aug 31 15:27:35.100 INFO kablam!     Checking rust-sort v0.1.4 (file:///source)
Aug 31 15:27:35.557 INFO kablam!     Checking utils v0.0.1
Aug 31 15:27:35.859 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 31 15:27:35.859 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:83:3
Aug 31 15:27:35.859 INFO kablam!    |
Aug 31 15:27:35.859 INFO kablam! 83 | #[experimental]
Aug 31 15:27:35.859 INFO kablam!    |   ^^^^^^^^^^^^
Aug 31 15:27:35.859 INFO kablam!    |
Aug 31 15:27:35.859 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 15:27:35.859 INFO kablam! 
Aug 31 15:27:35.860 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 31 15:27:35.860 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:77:3
Aug 31 15:27:35.860 INFO kablam!    |
Aug 31 15:27:35.860 INFO kablam! 77 | #[experimental]
Aug 31 15:27:35.860 INFO kablam!    |   ^^^^^^^^^^^^
Aug 31 15:27:35.860 INFO kablam!    |
Aug 31 15:27:35.860 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 15:27:35.860 INFO kablam! 
Aug 31 15:27:35.860 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 31 15:27:35.860 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:37:3
Aug 31 15:27:35.860 INFO kablam!    |
Aug 31 15:27:35.860 INFO kablam! 37 | #[experimental]
Aug 31 15:27:35.860 INFO kablam!    |   ^^^^^^^^^^^^
Aug 31 15:27:35.860 INFO kablam!    |
Aug 31 15:27:35.860 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 15:27:35.860 INFO kablam! 
Aug 31 15:27:35.860 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 31 15:27:35.860 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:29:3
Aug 31 15:27:35.860 INFO kablam!    |
Aug 31 15:27:35.861 INFO kablam! 29 | #[experimental]
Aug 31 15:27:35.861 INFO kablam!    |   ^^^^^^^^^^^^
Aug 31 15:27:35.861 INFO kablam!    |
Aug 31 15:27:35.861 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 15:27:35.861 INFO kablam! 
Aug 31 15:27:35.861 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 31 15:27:35.861 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:13:3
Aug 31 15:27:35.861 INFO kablam!    |
Aug 31 15:27:35.861 INFO kablam! 13 | #[experimental]
Aug 31 15:27:35.861 INFO kablam!    |   ^^^^^^^^^^^^
Aug 31 15:27:35.861 INFO kablam!    |
Aug 31 15:27:35.861 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 15:27:35.861 INFO kablam! 
Aug 31 15:27:35.861 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 31 15:27:35.861 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:63:3
Aug 31 15:27:35.861 INFO kablam!    |
Aug 31 15:27:35.861 INFO kablam! 63 | #[experimental]
Aug 31 15:27:35.861 INFO kablam!    |   ^^^^^^^^^^^^
Aug 31 15:27:35.861 INFO kablam!    |
Aug 31 15:27:35.861 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 15:27:35.862 INFO kablam! 
Aug 31 15:27:35.862 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 31 15:27:35.862 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:45:3
Aug 31 15:27:35.862 INFO kablam!    |
Aug 31 15:27:35.862 INFO kablam! 45 | #[experimental]
Aug 31 15:27:35.862 INFO kablam!    |   ^^^^^^^^^^^^
Aug 31 15:27:35.862 INFO kablam!    |
Aug 31 15:27:35.862 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 15:27:35.862 INFO kablam! 
Aug 31 15:27:35.862 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 31 15:27:35.862 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:37:3
Aug 31 15:27:35.862 INFO kablam!    |
Aug 31 15:27:35.862 INFO kablam! 37 | #[experimental]
Aug 31 15:27:35.862 INFO kablam!    |   ^^^^^^^^^^^^
Aug 31 15:27:35.862 INFO kablam!    |
Aug 31 15:27:35.862 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 15:27:35.862 INFO kablam! 
Aug 31 15:27:35.862 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 31 15:27:35.862 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:29:3
Aug 31 15:27:35.862 INFO kablam!    |
Aug 31 15:27:35.862 INFO kablam! 29 | #[experimental]
Aug 31 15:27:35.862 INFO kablam!    |   ^^^^^^^^^^^^
Aug 31 15:27:35.863 INFO kablam!    |
Aug 31 15:27:35.863 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 15:27:35.863 INFO kablam! 
Aug 31 15:27:35.863 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 31 15:27:35.863 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:21:3
Aug 31 15:27:35.863 INFO kablam!    |
Aug 31 15:27:35.863 INFO kablam! 21 | #[experimental]
Aug 31 15:27:35.863 INFO kablam!    |   ^^^^^^^^^^^^
Aug 31 15:27:35.863 INFO kablam!    |
Aug 31 15:27:35.863 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 15:27:35.863 INFO kablam! 
Aug 31 15:27:35.863 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 31 15:27:35.863 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:14:3
Aug 31 15:27:35.863 INFO kablam!    |
Aug 31 15:27:35.863 INFO kablam! 14 | #[experimental]
Aug 31 15:27:35.863 INFO kablam!    |   ^^^^^^^^^^^^
Aug 31 15:27:35.863 INFO kablam!    |
Aug 31 15:27:35.863 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 15:27:35.863 INFO kablam! 
Aug 31 15:27:35.863 INFO kablam! error: aborting due to 11 previous errors
Aug 31 15:27:35.863 INFO kablam! 
Aug 31 15:27:35.864 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Aug 31 15:27:35.869 INFO kablam! error: Could not compile `utils`.
Aug 31 15:27:35.869 INFO kablam! 
Aug 31 15:27:35.869 INFO kablam! To learn more, run the command again with --verbose.
Aug 31 15:27:35.871 INFO kablam! su: No module specific data is present
Aug 31 15:27:36.510 INFO running `"docker" "rm" "-f" "5962f2837374115615b954beed9ef91f55695b41e0f44030c503e83b94f16695"`
Aug 31 15:27:36.609 INFO blam! 5962f2837374115615b954beed9ef91f55695b41e0f44030c503e83b94f16695