Sep 02 01:31:33.401 INFO checking rust-sort-0.1.4 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53851
Sep 02 01:31:33.401 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 02 01:31:33.401 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53851/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-3/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 01:31:33.578 INFO blam! 3c8dfb0a714023087e042062824f7ab1f166f3540c4008b0bc2cbf9bd511d2b6
Sep 02 01:31:33.579 INFO running `"docker" "start" "-a" "3c8dfb0a714023087e042062824f7ab1f166f3540c4008b0bc2cbf9bd511d2b6"`
Sep 02 01:31:34.233 INFO kablam!     Checking commandext v0.1.0
Sep 02 01:31:34.233 INFO kablam!     Checking rust-sort v0.1.4 (file:///source)
Sep 02 01:31:34.644 INFO kablam!     Checking utils v0.0.1
Sep 02 01:31:34.908 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 02 01:31:34.908 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:83:3
Sep 02 01:31:34.908 INFO kablam!    |
Sep 02 01:31:34.908 INFO kablam! 83 | #[experimental]
Sep 02 01:31:34.908 INFO kablam!    |   ^^^^^^^^^^^^
Sep 02 01:31:34.908 INFO kablam!    |
Sep 02 01:31:34.908 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 01:31:34.908 INFO kablam! 
Sep 02 01:31:34.908 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 02 01:31:34.908 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:77:3
Sep 02 01:31:34.908 INFO kablam!    |
Sep 02 01:31:34.908 INFO kablam! 77 | #[experimental]
Sep 02 01:31:34.909 INFO kablam!    |   ^^^^^^^^^^^^
Sep 02 01:31:34.909 INFO kablam!    |
Sep 02 01:31:34.909 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 01:31:34.909 INFO kablam! 
Sep 02 01:31:34.909 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 02 01:31:34.909 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:37:3
Sep 02 01:31:34.909 INFO kablam!    |
Sep 02 01:31:34.909 INFO kablam! 37 | #[experimental]
Sep 02 01:31:34.909 INFO kablam!    |   ^^^^^^^^^^^^
Sep 02 01:31:34.909 INFO kablam!    |
Sep 02 01:31:34.909 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 01:31:34.909 INFO kablam! 
Sep 02 01:31:34.909 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 02 01:31:34.909 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:29:3
Sep 02 01:31:34.909 INFO kablam!    |
Sep 02 01:31:34.909 INFO kablam! 29 | #[experimental]
Sep 02 01:31:34.909 INFO kablam!    |   ^^^^^^^^^^^^
Sep 02 01:31:34.910 INFO kablam!    |
Sep 02 01:31:34.910 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 01:31:34.910 INFO kablam! 
Sep 02 01:31:34.910 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 02 01:31:34.910 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:13:3
Sep 02 01:31:34.910 INFO kablam!    |
Sep 02 01:31:34.910 INFO kablam! 13 | #[experimental]
Sep 02 01:31:34.910 INFO kablam!    |   ^^^^^^^^^^^^
Sep 02 01:31:34.910 INFO kablam!    |
Sep 02 01:31:34.910 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 01:31:34.910 INFO kablam! 
Sep 02 01:31:34.910 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 02 01:31:34.910 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:63:3
Sep 02 01:31:34.910 INFO kablam!    |
Sep 02 01:31:34.910 INFO kablam! 63 | #[experimental]
Sep 02 01:31:34.910 INFO kablam!    |   ^^^^^^^^^^^^
Sep 02 01:31:34.910 INFO kablam!    |
Sep 02 01:31:34.910 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 01:31:34.910 INFO kablam! 
Sep 02 01:31:34.910 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 02 01:31:34.910 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:45:3
Sep 02 01:31:34.911 INFO kablam!    |
Sep 02 01:31:34.911 INFO kablam! 45 | #[experimental]
Sep 02 01:31:34.911 INFO kablam!    |   ^^^^^^^^^^^^
Sep 02 01:31:34.911 INFO kablam!    |
Sep 02 01:31:34.911 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 01:31:34.911 INFO kablam! 
Sep 02 01:31:34.911 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 02 01:31:34.911 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:37:3
Sep 02 01:31:34.911 INFO kablam!    |
Sep 02 01:31:34.911 INFO kablam! 37 | #[experimental]
Sep 02 01:31:34.911 INFO kablam!    |   ^^^^^^^^^^^^
Sep 02 01:31:34.911 INFO kablam!    |
Sep 02 01:31:34.911 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 01:31:34.911 INFO kablam! 
Sep 02 01:31:34.911 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 02 01:31:34.911 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:29:3
Sep 02 01:31:34.911 INFO kablam!    |
Sep 02 01:31:34.911 INFO kablam! 29 | #[experimental]
Sep 02 01:31:34.911 INFO kablam!    |   ^^^^^^^^^^^^
Sep 02 01:31:34.911 INFO kablam!    |
Sep 02 01:31:34.911 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 01:31:34.911 INFO kablam! 
Sep 02 01:31:34.911 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 02 01:31:34.911 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:21:3
Sep 02 01:31:34.911 INFO kablam!    |
Sep 02 01:31:34.911 INFO kablam! 21 | #[experimental]
Sep 02 01:31:34.911 INFO kablam!    |   ^^^^^^^^^^^^
Sep 02 01:31:34.911 INFO kablam!    |
Sep 02 01:31:34.911 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 01:31:34.911 INFO kablam! 
Sep 02 01:31:34.911 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 02 01:31:34.911 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:14:3
Sep 02 01:31:34.911 INFO kablam!    |
Sep 02 01:31:34.911 INFO kablam! 14 | #[experimental]
Sep 02 01:31:34.911 INFO kablam!    |   ^^^^^^^^^^^^
Sep 02 01:31:34.911 INFO kablam!    |
Sep 02 01:31:34.911 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 01:31:34.911 INFO kablam! 
Sep 02 01:31:34.911 INFO kablam! error: aborting due to 11 previous errors
Sep 02 01:31:34.911 INFO kablam! 
Sep 02 01:31:34.911 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 02 01:31:34.917 INFO kablam! error: Could not compile `utils`.
Sep 02 01:31:34.917 INFO kablam! 
Sep 02 01:31:34.917 INFO kablam! To learn more, run the command again with --verbose.
Sep 02 01:31:34.918 INFO kablam! su: No module specific data is present
Sep 02 01:31:35.365 INFO running `"docker" "rm" "-f" "3c8dfb0a714023087e042062824f7ab1f166f3540c4008b0bc2cbf9bd511d2b6"`
Sep 02 01:31:35.458 INFO blam! 3c8dfb0a714023087e042062824f7ab1f166f3540c4008b0bc2cbf9bd511d2b6