Sep 04 22:39:53.997 INFO checking buildable-0.0.5 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 22:39:53.997 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 22:39:53.998 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 22:39:54.188 INFO blam! 3a0fc31df441745650997870c22b14111c5ac1492a7068a51db7c04f800b7b2e
Sep 04 22:39:54.190 INFO running `"docker" "start" "-a" "3a0fc31df441745650997870c22b14111c5ac1492a7068a51db7c04f800b7b2e"`
Sep 04 22:39:54.744 INFO kablam!     Checking buildable v0.0.5 (file:///source)
Sep 04 22:39:54.793 INFO kablam! warning: unknown lint: `unstable`
Sep 04 22:39:54.793 INFO kablam!   --> src/lib.rs:12:10
Sep 04 22:39:54.793 INFO kablam!    |
Sep 04 22:39:54.793 INFO kablam! 12 | #![allow(unstable)]
Sep 04 22:39:54.793 INFO kablam!    |          ^^^^^^^^
Sep 04 22:39:54.793 INFO kablam!    |
Sep 04 22:39:54.793 INFO kablam!    = note: #[warn(unknown_lints)] on by default
Sep 04 22:39:54.793 INFO kablam! 
Sep 04 22:39:54.793 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 22:39:54.793 INFO kablam!   --> src/lib.rs:11:4
Sep 04 22:39:54.793 INFO kablam!    |
Sep 04 22:39:54.793 INFO kablam! 11 | #![experimental]
Sep 04 22:39:54.793 INFO kablam!    |    ^^^^^^^^^^^^
Sep 04 22:39:54.793 INFO kablam!    |
Sep 04 22:39:54.793 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 22:39:54.793 INFO kablam! 
Sep 04 22:39:54.793 INFO kablam! warning: unknown lint: `unstable`
Sep 04 22:39:54.793 INFO kablam!   --> src/lib.rs:12:10
Sep 04 22:39:54.793 INFO kablam!    |
Sep 04 22:39:54.794 INFO kablam! 12 | #![allow(unstable)]
Sep 04 22:39:54.794 INFO kablam!    |          ^^^^^^^^
Sep 04 22:39:54.794 INFO kablam!    |
Sep 04 22:39:54.794 INFO kablam!    = note: #[warn(unknown_lints)] on by default
Sep 04 22:39:54.794 INFO kablam! 
Sep 04 22:39:54.794 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 22:39:54.794 INFO kablam!   --> src/lib.rs:11:4
Sep 04 22:39:54.794 INFO kablam!    |
Sep 04 22:39:54.794 INFO kablam! 11 | #![experimental]
Sep 04 22:39:54.794 INFO kablam!    |    ^^^^^^^^^^^^
Sep 04 22:39:54.794 INFO kablam!    |
Sep 04 22:39:54.794 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 22:39:54.794 INFO kablam! 
Sep 04 22:39:55.242 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 22:39:55.243 INFO kablam!   --> src/lib.rs:20:3
Sep 04 22:39:55.243 INFO kablam!    |
Sep 04 22:39:55.243 INFO kablam! 20 | #[experimental]
Sep 04 22:39:55.243 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 22:39:55.243 INFO kablam!    |
Sep 04 22:39:55.243 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 22:39:55.243 INFO kablam! 
Sep 04 22:39:55.245 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 22:39:55.245 INFO kablam!    --> src/lib.rs:196:3
Sep 04 22:39:55.245 INFO kablam!     |
Sep 04 22:39:55.245 INFO kablam! 196 | #[experimental]
Sep 04 22:39:55.245 INFO kablam!     |   ^^^^^^^^^^^^
Sep 04 22:39:55.245 INFO kablam!     |
Sep 04 22:39:55.245 INFO kablam!     = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 22:39:55.245 INFO kablam! 
Sep 04 22:39:55.251 INFO kablam! error: aborting due to 3 previous errors
Sep 04 22:39:55.251 INFO kablam! 
Sep 04 22:39:55.251 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 04 22:39:55.258 INFO kablam! error: Could not compile `buildable`.
Sep 04 22:39:55.258 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 22:39:55.311 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 22:39:55.312 INFO kablam!   --> src/lib.rs:20:3
Sep 04 22:39:55.312 INFO kablam!    |
Sep 04 22:39:55.312 INFO kablam! 20 | #[experimental]
Sep 04 22:39:55.312 INFO kablam!    |   ^^^^^^^^^^^^
Sep 04 22:39:55.312 INFO kablam!    |
Sep 04 22:39:55.312 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 22:39:55.312 INFO kablam! 
Sep 04 22:39:55.313 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 22:39:55.313 INFO kablam!    --> src/lib.rs:196:3
Sep 04 22:39:55.313 INFO kablam!     |
Sep 04 22:39:55.313 INFO kablam! 196 | #[experimental]
Sep 04 22:39:55.313 INFO kablam!     |   ^^^^^^^^^^^^
Sep 04 22:39:55.313 INFO kablam!     |
Sep 04 22:39:55.313 INFO kablam!     = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 22:39:55.314 INFO kablam! 
Sep 04 22:39:55.344 INFO kablam! error: aborting due to 3 previous errors
Sep 04 22:39:55.344 INFO kablam! 
Sep 04 22:39:55.344 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 04 22:39:55.349 INFO kablam! error: Could not compile `buildable`.
Sep 04 22:39:55.349 INFO kablam! 
Sep 04 22:39:55.349 INFO kablam! To learn more, run the command again with --verbose.
Sep 04 22:39:55.351 INFO kablam! su: No module specific data is present
Sep 04 22:39:55.876 INFO running `"docker" "rm" "-f" "3a0fc31df441745650997870c22b14111c5ac1492a7068a51db7c04f800b7b2e"`
Sep 04 22:39:55.975 INFO blam! 3a0fc31df441745650997870c22b14111c5ac1492a7068a51db7c04f800b7b2e