Sep 04 04:53:32.610 INFO checking rust-sort-0.1.4 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 04:53:32.610 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 04:53:32.610 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-1/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/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 +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 04:53:32.773 INFO blam! 962b92e5198732190f122ce2366aeb5e74a4ce2ee6823a3cdb594f36e49077f7
Sep 04 04:53:32.775 INFO running `"docker" "start" "-a" "962b92e5198732190f122ce2366aeb5e74a4ce2ee6823a3cdb594f36e49077f7"`
Sep 04 04:53:33.352 INFO kablam!     Checking rust-sort v0.1.4 (file:///source)
Sep 04 04:53:33.352 INFO kablam!     Checking utils v0.0.1
Sep 04 04:53:33.628 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 04:53:33.628 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:83:3
Sep 04 04:53:33.628 INFO kablam!    |
Sep 04 04:53:33.628 INFO kablam! 83 | #[experimental]
Sep 04 04:53:33.628 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 04:53:33.628 INFO kablam!    |
Sep 04 04:53:33.628 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:53:33.628 INFO kablam! 
Sep 04 04:53:33.628 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 04:53:33.628 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:77:3
Sep 04 04:53:33.628 INFO kablam!    |
Sep 04 04:53:33.628 INFO kablam! 77 | #[experimental]
Sep 04 04:53:33.628 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 04:53:33.628 INFO kablam!    |
Sep 04 04:53:33.628 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:53:33.628 INFO kablam! 
Sep 04 04:53:33.628 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 04:53:33.629 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:37:3
Sep 04 04:53:33.629 INFO kablam!    |
Sep 04 04:53:33.629 INFO kablam! 37 | #[experimental]
Sep 04 04:53:33.629 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 04:53:33.629 INFO kablam!    |
Sep 04 04:53:33.629 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:53:33.629 INFO kablam! 
Sep 04 04:53:33.629 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 04:53:33.629 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:29:3
Sep 04 04:53:33.629 INFO kablam!    |
Sep 04 04:53:33.629 INFO kablam! 29 | #[experimental]
Sep 04 04:53:33.629 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 04:53:33.629 INFO kablam!    |
Sep 04 04:53:33.629 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:53:33.629 INFO kablam! 
Sep 04 04:53:33.629 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 04:53:33.629 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:13:3
Sep 04 04:53:33.629 INFO kablam!    |
Sep 04 04:53:33.629 INFO kablam! 13 | #[experimental]
Sep 04 04:53:33.629 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 04:53:33.629 INFO kablam!    |
Sep 04 04:53:33.629 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:53:33.629 INFO kablam! 
Sep 04 04:53:33.629 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 04:53:33.629 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:63:3
Sep 04 04:53:33.630 INFO kablam!    |
Sep 04 04:53:33.630 INFO kablam! 63 | #[experimental]
Sep 04 04:53:33.630 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 04:53:33.630 INFO kablam!    |
Sep 04 04:53:33.630 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:53:33.630 INFO kablam! 
Sep 04 04:53:33.630 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 04:53:33.630 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:45:3
Sep 04 04:53:33.630 INFO kablam!    |
Sep 04 04:53:33.630 INFO kablam! 45 | #[experimental]
Sep 04 04:53:33.630 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 04:53:33.630 INFO kablam!    |
Sep 04 04:53:33.630 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:53:33.630 INFO kablam! 
Sep 04 04:53:33.630 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 04:53:33.630 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:37:3
Sep 04 04:53:33.630 INFO kablam!    |
Sep 04 04:53:33.630 INFO kablam! 37 | #[experimental]
Sep 04 04:53:33.630 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 04:53:33.630 INFO kablam!    |
Sep 04 04:53:33.630 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:53:33.630 INFO kablam! 
Sep 04 04:53:33.630 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 04:53:33.630 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:29:3
Sep 04 04:53:33.630 INFO kablam!    |
Sep 04 04:53:33.630 INFO kablam! 29 | #[experimental]
Sep 04 04:53:33.631 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 04:53:33.631 INFO kablam!    |
Sep 04 04:53:33.631 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:53:33.631 INFO kablam! 
Sep 04 04:53:33.631 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 04:53:33.631 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:21:3
Sep 04 04:53:33.631 INFO kablam!    |
Sep 04 04:53:33.631 INFO kablam! 21 | #[experimental]
Sep 04 04:53:33.631 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 04:53:33.631 INFO kablam!    |
Sep 04 04:53:33.631 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:53:33.631 INFO kablam! 
Sep 04 04:53:33.631 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 04:53:33.631 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:14:3
Sep 04 04:53:33.631 INFO kablam!    |
Sep 04 04:53:33.631 INFO kablam! 14 | #[experimental]
Sep 04 04:53:33.631 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 04:53:33.631 INFO kablam!    |
Sep 04 04:53:33.631 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:53:33.631 INFO kablam! 
Sep 04 04:53:33.631 INFO kablam! error: aborting due to 11 previous errors
Sep 04 04:53:33.631 INFO kablam! 
Sep 04 04:53:33.631 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 04 04:53:33.635 INFO kablam! error: Could not compile `utils`.
Sep 04 04:53:33.636 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 04:53:33.854 INFO kablam! error: build failed
Sep 04 04:53:33.855 INFO kablam! su: No module specific data is present
Sep 04 04:53:34.326 INFO running `"docker" "rm" "-f" "962b92e5198732190f122ce2366aeb5e74a4ce2ee6823a3cdb594f36e49077f7"`
Sep 04 04:53:34.422 INFO blam! 962b92e5198732190f122ce2366aeb5e74a4ce2ee6823a3cdb594f36e49077f7