Sep 04 08:02:11.512 INFO checking rust-sort-0.1.4 against try#5fe695a3844714c70e8f7731a553f7947987a68a for pr-53913
Sep 04 08:02:11.512 INFO running: cargo +5fe695a3844714c70e8f7731a553f7947987a68a-alt check --frozen --all --all-targets
Sep 04 08:02:11.512 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53913/try#5fe695a3844714c70e8f7731a553f7947987a68a:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-0/try#5fe695a3844714c70e8f7731a553f7947987a68a:/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 +5fe695a3844714c70e8f7731a553f7947987a68a-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 08:02:11.715 INFO blam! 3f55935f11d9fea81092c2dc8a30e602aa096e852409952bcd8d8f6b9bbe34bb
Sep 04 08:02:11.716 INFO running `"docker" "start" "-a" "3f55935f11d9fea81092c2dc8a30e602aa096e852409952bcd8d8f6b9bbe34bb"`
Sep 04 08:02:12.603 INFO kablam!     Checking commandext v0.1.0
Sep 04 08:02:12.603 INFO kablam!     Checking rust-sort v0.1.4 (file:///source)
Sep 04 08:02:13.048 INFO kablam!     Checking utils v0.0.1
Sep 04 08:02:13.342 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)
Sep 04 08:02:13.342 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:83:3
Sep 04 08:02:13.342 INFO kablam!    |
Sep 04 08:02:13.342 INFO kablam! 83 | #[experimental]
Sep 04 08:02:13.342 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 08:02:13.342 INFO kablam!    |
Sep 04 08:02:13.342 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 08:02:13.342 INFO kablam! 
Sep 04 08:02:13.342 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)
Sep 04 08:02:13.342 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:77:3
Sep 04 08:02:13.342 INFO kablam!    |
Sep 04 08:02:13.342 INFO kablam! 77 | #[experimental]
Sep 04 08:02:13.342 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 08:02:13.342 INFO kablam!    |
Sep 04 08:02:13.342 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 08:02:13.342 INFO kablam! 
Sep 04 08:02:13.342 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)
Sep 04 08:02:13.342 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:37:3
Sep 04 08:02:13.342 INFO kablam!    |
Sep 04 08:02:13.342 INFO kablam! 37 | #[experimental]
Sep 04 08:02:13.342 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 08:02:13.342 INFO kablam!    |
Sep 04 08:02:13.342 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 08:02:13.343 INFO kablam! 
Sep 04 08:02:13.343 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)
Sep 04 08:02:13.343 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:29:3
Sep 04 08:02:13.343 INFO kablam!    |
Sep 04 08:02:13.343 INFO kablam! 29 | #[experimental]
Sep 04 08:02:13.343 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 08:02:13.343 INFO kablam!    |
Sep 04 08:02:13.343 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 08:02:13.343 INFO kablam! 
Sep 04 08:02:13.343 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)
Sep 04 08:02:13.343 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:13:3
Sep 04 08:02:13.343 INFO kablam!    |
Sep 04 08:02:13.343 INFO kablam! 13 | #[experimental]
Sep 04 08:02:13.343 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 08:02:13.343 INFO kablam!    |
Sep 04 08:02:13.343 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 08:02:13.343 INFO kablam! 
Sep 04 08:02:13.343 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)
Sep 04 08:02:13.343 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:63:3
Sep 04 08:02:13.343 INFO kablam!    |
Sep 04 08:02:13.343 INFO kablam! 63 | #[experimental]
Sep 04 08:02:13.343 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 08:02:13.343 INFO kablam!    |
Sep 04 08:02:13.343 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 08:02:13.343 INFO kablam! 
Sep 04 08:02:13.344 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)
Sep 04 08:02:13.344 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:45:3
Sep 04 08:02:13.344 INFO kablam!    |
Sep 04 08:02:13.344 INFO kablam! 45 | #[experimental]
Sep 04 08:02:13.344 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 08:02:13.344 INFO kablam!    |
Sep 04 08:02:13.344 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 08:02:13.344 INFO kablam! 
Sep 04 08:02:13.344 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)
Sep 04 08:02:13.344 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:37:3
Sep 04 08:02:13.344 INFO kablam!    |
Sep 04 08:02:13.344 INFO kablam! 37 | #[experimental]
Sep 04 08:02:13.344 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 08:02:13.344 INFO kablam!    |
Sep 04 08:02:13.344 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 08:02:13.344 INFO kablam! 
Sep 04 08:02:13.344 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)
Sep 04 08:02:13.344 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:29:3
Sep 04 08:02:13.344 INFO kablam!    |
Sep 04 08:02:13.344 INFO kablam! 29 | #[experimental]
Sep 04 08:02:13.344 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 08:02:13.344 INFO kablam!    |
Sep 04 08:02:13.344 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 08:02:13.344 INFO kablam! 
Sep 04 08:02:13.344 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)
Sep 04 08:02:13.344 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:21:3
Sep 04 08:02:13.344 INFO kablam!    |
Sep 04 08:02:13.344 INFO kablam! 21 | #[experimental]
Sep 04 08:02:13.344 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 08:02:13.344 INFO kablam!    |
Sep 04 08:02:13.344 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 08:02:13.344 INFO kablam! 
Sep 04 08:02:13.345 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)
Sep 04 08:02:13.345 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:14:3
Sep 04 08:02:13.345 INFO kablam!    |
Sep 04 08:02:13.345 INFO kablam! 14 | #[experimental]
Sep 04 08:02:13.345 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 08:02:13.345 INFO kablam!    |
Sep 04 08:02:13.345 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 08:02:13.345 INFO kablam! 
Sep 04 08:02:13.345 INFO kablam! error: aborting due to 11 previous errors
Sep 04 08:02:13.345 INFO kablam! 
Sep 04 08:02:13.345 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 04 08:02:13.349 INFO kablam! error: Could not compile `utils`.
Sep 04 08:02:13.349 INFO kablam! 
Sep 04 08:02:13.349 INFO kablam! To learn more, run the command again with --verbose.
Sep 04 08:02:13.350 INFO kablam! su: No module specific data is present
Sep 04 08:02:13.857 INFO running `"docker" "rm" "-f" "3f55935f11d9fea81092c2dc8a30e602aa096e852409952bcd8d8f6b9bbe34bb"`
Sep 04 08:02:13.969 INFO blam! 3f55935f11d9fea81092c2dc8a30e602aa096e852409952bcd8d8f6b9bbe34bb