Sep 10 10:44:22.254 INFO checking rust-sort-0.1.4 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 10:44:22.254 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 10:44:22.254 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-5/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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 +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 10:44:22.478 INFO blam! 2f99f5183c6c1711581ecda5ce839c0dfeca97a89319ce0f8a89fd08cc84cc89
Sep 10 10:44:22.480 INFO running `"docker" "start" "-a" "2f99f5183c6c1711581ecda5ce839c0dfeca97a89319ce0f8a89fd08cc84cc89"`
Sep 10 10:44:23.581 INFO kablam! usermod: no changes
Sep 10 10:44:23.616 INFO kablam!     Checking commandext v0.1.0
Sep 10 10:44:23.617 INFO kablam!     Checking rust-sort v0.1.4 (file:///source)
Sep 10 10:44:23.938 INFO kablam!     Checking utils v0.0.1
Sep 10 10:44:24.094 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 10 10:44:24.094 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:83:3
Sep 10 10:44:24.094 INFO kablam!    |
Sep 10 10:44:24.094 INFO kablam! 83 | #[experimental]
Sep 10 10:44:24.094 INFO kablam!    |   ^^^^^^^^^^^^
Sep 10 10:44:24.094 INFO kablam!    |
Sep 10 10:44:24.094 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 10:44:24.094 INFO kablam! 
Sep 10 10:44:24.094 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 10 10:44:24.094 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:77:3
Sep 10 10:44:24.094 INFO kablam!    |
Sep 10 10:44:24.094 INFO kablam! 77 | #[experimental]
Sep 10 10:44:24.094 INFO kablam!    |   ^^^^^^^^^^^^
Sep 10 10:44:24.094 INFO kablam!    |
Sep 10 10:44:24.094 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 10:44:24.094 INFO kablam! 
Sep 10 10:44:24.095 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 10 10:44:24.095 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:37:3
Sep 10 10:44:24.095 INFO kablam!    |
Sep 10 10:44:24.095 INFO kablam! 37 | #[experimental]
Sep 10 10:44:24.095 INFO kablam!    |   ^^^^^^^^^^^^
Sep 10 10:44:24.095 INFO kablam!    |
Sep 10 10:44:24.095 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 10:44:24.095 INFO kablam! 
Sep 10 10:44:24.098 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 10 10:44:24.098 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:29:3
Sep 10 10:44:24.098 INFO kablam!    |
Sep 10 10:44:24.098 INFO kablam! 29 | #[experimental]
Sep 10 10:44:24.098 INFO kablam!    |   ^^^^^^^^^^^^
Sep 10 10:44:24.098 INFO kablam!    |
Sep 10 10:44:24.098 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 10:44:24.098 INFO kablam! 
Sep 10 10:44:24.098 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 10 10:44:24.098 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:13:3
Sep 10 10:44:24.098 INFO kablam!    |
Sep 10 10:44:24.098 INFO kablam! 13 | #[experimental]
Sep 10 10:44:24.098 INFO kablam!    |   ^^^^^^^^^^^^
Sep 10 10:44:24.098 INFO kablam!    |
Sep 10 10:44:24.098 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 10:44:24.098 INFO kablam! 
Sep 10 10:44:24.098 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 10 10:44:24.098 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:63:3
Sep 10 10:44:24.098 INFO kablam!    |
Sep 10 10:44:24.098 INFO kablam! 63 | #[experimental]
Sep 10 10:44:24.098 INFO kablam!    |   ^^^^^^^^^^^^
Sep 10 10:44:24.098 INFO kablam!    |
Sep 10 10:44:24.098 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 10:44:24.098 INFO kablam! 
Sep 10 10:44:24.098 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 10 10:44:24.098 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:45:3
Sep 10 10:44:24.098 INFO kablam!    |
Sep 10 10:44:24.098 INFO kablam! 45 | #[experimental]
Sep 10 10:44:24.098 INFO kablam!    |   ^^^^^^^^^^^^
Sep 10 10:44:24.098 INFO kablam!    |
Sep 10 10:44:24.098 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 10:44:24.098 INFO kablam! 
Sep 10 10:44:24.098 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 10 10:44:24.098 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:37:3
Sep 10 10:44:24.098 INFO kablam!    |
Sep 10 10:44:24.098 INFO kablam! 37 | #[experimental]
Sep 10 10:44:24.098 INFO kablam!    |   ^^^^^^^^^^^^
Sep 10 10:44:24.098 INFO kablam!    |
Sep 10 10:44:24.098 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 10:44:24.098 INFO kablam! 
Sep 10 10:44:24.098 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 10 10:44:24.098 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:29:3
Sep 10 10:44:24.098 INFO kablam!    |
Sep 10 10:44:24.098 INFO kablam! 29 | #[experimental]
Sep 10 10:44:24.098 INFO kablam!    |   ^^^^^^^^^^^^
Sep 10 10:44:24.098 INFO kablam!    |
Sep 10 10:44:24.098 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 10:44:24.098 INFO kablam! 
Sep 10 10:44:24.099 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 10 10:44:24.099 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:21:3
Sep 10 10:44:24.099 INFO kablam!    |
Sep 10 10:44:24.099 INFO kablam! 21 | #[experimental]
Sep 10 10:44:24.099 INFO kablam!    |   ^^^^^^^^^^^^
Sep 10 10:44:24.099 INFO kablam!    |
Sep 10 10:44:24.099 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 10:44:24.099 INFO kablam! 
Sep 10 10:44:24.099 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 10 10:44:24.099 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:14:3
Sep 10 10:44:24.099 INFO kablam!    |
Sep 10 10:44:24.099 INFO kablam! 14 | #[experimental]
Sep 10 10:44:24.099 INFO kablam!    |   ^^^^^^^^^^^^
Sep 10 10:44:24.099 INFO kablam!    |
Sep 10 10:44:24.099 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 10:44:24.099 INFO kablam! 
Sep 10 10:44:24.099 INFO kablam! error: aborting due to 11 previous errors
Sep 10 10:44:24.099 INFO kablam! 
Sep 10 10:44:24.099 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 10 10:44:24.103 INFO kablam! error: Could not compile `utils`.
Sep 10 10:44:24.103 INFO kablam! 
Sep 10 10:44:24.103 INFO kablam! To learn more, run the command again with --verbose.
Sep 10 10:44:24.104 INFO kablam! su: No module specific data is present
Sep 10 10:44:24.657 INFO running `"docker" "rm" "-f" "2f99f5183c6c1711581ecda5ce839c0dfeca97a89319ce0f8a89fd08cc84cc89"`
Sep 10 10:44:24.737 INFO blam! 2f99f5183c6c1711581ecda5ce839c0dfeca97a89319ce0f8a89fd08cc84cc89