Sep 19 21:07:34.647 INFO checking rust-sort-0.1.4 against try#135b4cd023a753409d01e43b0f23d22a899feeeb for pr-54352
Sep 19 21:07:34.647 INFO running: cargo +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets
Sep 19 21:07:34.647 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54352/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-0/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/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=1000" "-e" "CMD=cargo +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 21:07:35.015 INFO blam! b8f1cad78617411948a8c5d8e157da903a50660122d5064471d63fa08a9162f4
Sep 19 21:07:35.017 INFO running `"docker" "start" "-a" "b8f1cad78617411948a8c5d8e157da903a50660122d5064471d63fa08a9162f4"`
Sep 19 21:07:36.158 INFO kablam! usermod: no changes
Sep 19 21:07:36.209 INFO kablam!     Checking commandext v0.1.0
Sep 19 21:07:36.209 INFO kablam!     Checking rust-sort v0.1.4 (/source)
Sep 19 21:07:36.630 INFO kablam!     Checking utils v0.0.1
Sep 19 21:07:36.869 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 19 21:07:36.869 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:83:3
Sep 19 21:07:36.869 INFO kablam!    |
Sep 19 21:07:36.869 INFO kablam! 83 | #[experimental]
Sep 19 21:07:36.869 INFO kablam!    |   ^^^^^^^^^^^^
Sep 19 21:07:36.869 INFO kablam!    |
Sep 19 21:07:36.869 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 19 21:07:36.869 INFO kablam! 
Sep 19 21:07:36.869 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 19 21:07:36.869 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:77:3
Sep 19 21:07:36.869 INFO kablam!    |
Sep 19 21:07:36.869 INFO kablam! 77 | #[experimental]
Sep 19 21:07:36.869 INFO kablam!    |   ^^^^^^^^^^^^
Sep 19 21:07:36.869 INFO kablam!    |
Sep 19 21:07:36.869 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 19 21:07:36.869 INFO kablam! 
Sep 19 21:07:36.870 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 19 21:07:36.870 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:37:3
Sep 19 21:07:36.870 INFO kablam!    |
Sep 19 21:07:36.870 INFO kablam! 37 | #[experimental]
Sep 19 21:07:36.870 INFO kablam!    |   ^^^^^^^^^^^^
Sep 19 21:07:36.870 INFO kablam!    |
Sep 19 21:07:36.870 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 19 21:07:36.870 INFO kablam! 
Sep 19 21:07:36.870 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 19 21:07:36.874 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:29:3
Sep 19 21:07:36.874 INFO kablam!    |
Sep 19 21:07:36.874 INFO kablam! 29 | #[experimental]
Sep 19 21:07:36.874 INFO kablam!    |   ^^^^^^^^^^^^
Sep 19 21:07:36.874 INFO kablam!    |
Sep 19 21:07:36.874 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 19 21:07:36.874 INFO kablam! 
Sep 19 21:07:36.874 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 19 21:07:36.874 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:13:3
Sep 19 21:07:36.874 INFO kablam!    |
Sep 19 21:07:36.874 INFO kablam! 13 | #[experimental]
Sep 19 21:07:36.874 INFO kablam!    |   ^^^^^^^^^^^^
Sep 19 21:07:36.874 INFO kablam!    |
Sep 19 21:07:36.874 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 19 21:07:36.874 INFO kablam! 
Sep 19 21:07:36.874 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 19 21:07:36.874 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:63:3
Sep 19 21:07:36.874 INFO kablam!    |
Sep 19 21:07:36.874 INFO kablam! 63 | #[experimental]
Sep 19 21:07:36.874 INFO kablam!    |   ^^^^^^^^^^^^
Sep 19 21:07:36.874 INFO kablam!    |
Sep 19 21:07:36.874 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 19 21:07:36.874 INFO kablam! 
Sep 19 21:07:36.874 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 19 21:07:36.874 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:45:3
Sep 19 21:07:36.874 INFO kablam!    |
Sep 19 21:07:36.875 INFO kablam! 45 | #[experimental]
Sep 19 21:07:36.875 INFO kablam!    |   ^^^^^^^^^^^^
Sep 19 21:07:36.875 INFO kablam!    |
Sep 19 21:07:36.875 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 19 21:07:36.875 INFO kablam! 
Sep 19 21:07:36.875 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 19 21:07:36.875 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:37:3
Sep 19 21:07:36.875 INFO kablam!    |
Sep 19 21:07:36.875 INFO kablam! 37 | #[experimental]
Sep 19 21:07:36.875 INFO kablam!    |   ^^^^^^^^^^^^
Sep 19 21:07:36.875 INFO kablam!    |
Sep 19 21:07:36.875 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 19 21:07:36.875 INFO kablam! 
Sep 19 21:07:36.875 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 19 21:07:36.875 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:29:3
Sep 19 21:07:36.875 INFO kablam!    |
Sep 19 21:07:36.875 INFO kablam! 29 | #[experimental]
Sep 19 21:07:36.875 INFO kablam!    |   ^^^^^^^^^^^^
Sep 19 21:07:36.875 INFO kablam!    |
Sep 19 21:07:36.875 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 19 21:07:36.875 INFO kablam! 
Sep 19 21:07:36.875 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 19 21:07:36.875 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:21:3
Sep 19 21:07:36.875 INFO kablam!    |
Sep 19 21:07:36.875 INFO kablam! 21 | #[experimental]
Sep 19 21:07:36.875 INFO kablam!    |   ^^^^^^^^^^^^
Sep 19 21:07:36.875 INFO kablam!    |
Sep 19 21:07:36.875 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 19 21:07:36.875 INFO kablam! 
Sep 19 21:07:36.875 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 19 21:07:36.875 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:14:3
Sep 19 21:07:36.875 INFO kablam!    |
Sep 19 21:07:36.875 INFO kablam! 14 | #[experimental]
Sep 19 21:07:36.875 INFO kablam!    |   ^^^^^^^^^^^^
Sep 19 21:07:36.875 INFO kablam!    |
Sep 19 21:07:36.875 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 19 21:07:36.875 INFO kablam! 
Sep 19 21:07:36.875 INFO kablam! error: aborting due to 11 previous errors
Sep 19 21:07:36.875 INFO kablam! 
Sep 19 21:07:36.875 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 19 21:07:36.877 INFO kablam! error: Could not compile `utils`.
Sep 19 21:07:36.877 INFO kablam! 
Sep 19 21:07:36.877 INFO kablam! To learn more, run the command again with --verbose.
Sep 19 21:07:36.877 INFO kablam! su: No module specific data is present
Sep 19 21:07:37.465 INFO running `"docker" "rm" "-f" "b8f1cad78617411948a8c5d8e157da903a50660122d5064471d63fa08a9162f4"`
Sep 19 21:07:37.613 INFO blam! b8f1cad78617411948a8c5d8e157da903a50660122d5064471d63fa08a9162f4