Sep 10 21:53:15.630 INFO checking buildable-0.0.5 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 21:53:15.630 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 21:53:15.630 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 21:53:15.883 INFO blam! a4898293b820a356780b3e04306b25a40993a716062a2c109b6cad0276a9e03f
Sep 10 21:53:15.885 INFO running `"docker" "start" "-a" "a4898293b820a356780b3e04306b25a40993a716062a2c109b6cad0276a9e03f"`
Sep 10 21:53:16.927 INFO kablam! usermod: no changes
Sep 10 21:53:16.986 INFO kablam!     Checking buildable v0.0.5 (file:///source)
Sep 10 21:53:17.062 INFO kablam! warning: unknown lint: `unstable`
Sep 10 21:53:17.062 INFO kablam!   --> src/lib.rs:12:10
Sep 10 21:53:17.062 INFO kablam!    |
Sep 10 21:53:17.062 INFO kablam! 12 | #![allow(unstable)]
Sep 10 21:53:17.062 INFO kablam!    |          ^^^^^^^^
Sep 10 21:53:17.062 INFO kablam!    |
Sep 10 21:53:17.062 INFO kablam!    = note: #[warn(unknown_lints)] on by default
Sep 10 21:53:17.062 INFO kablam! 
Sep 10 21:53:17.062 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 21:53:17.062 INFO kablam!   --> src/lib.rs:11:4
Sep 10 21:53:17.062 INFO kablam!    |
Sep 10 21:53:17.062 INFO kablam! 11 | #![experimental]
Sep 10 21:53:17.062 INFO kablam!    |    ^^^^^^^^^^^^
Sep 10 21:53:17.062 INFO kablam!    |
Sep 10 21:53:17.062 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 21:53:17.062 INFO kablam! 
Sep 10 21:53:17.150 INFO kablam! warning: unknown lint: `unstable`
Sep 10 21:53:17.150 INFO kablam!   --> src/lib.rs:12:10
Sep 10 21:53:17.150 INFO kablam!    |
Sep 10 21:53:17.150 INFO kablam! 12 | #![allow(unstable)]
Sep 10 21:53:17.150 INFO kablam!    |          ^^^^^^^^
Sep 10 21:53:17.150 INFO kablam!    |
Sep 10 21:53:17.150 INFO kablam!    = note: #[warn(unknown_lints)] on by default
Sep 10 21:53:17.150 INFO kablam! 
Sep 10 21:53:17.150 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 21:53:17.150 INFO kablam!   --> src/lib.rs:11:4
Sep 10 21:53:17.150 INFO kablam!    |
Sep 10 21:53:17.150 INFO kablam! 11 | #![experimental]
Sep 10 21:53:17.151 INFO kablam!    |    ^^^^^^^^^^^^
Sep 10 21:53:17.151 INFO kablam!    |
Sep 10 21:53:17.151 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 21:53:17.151 INFO kablam! 
Sep 10 21:53:17.366 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 21:53:17.366 INFO kablam!   --> src/lib.rs:20:3
Sep 10 21:53:17.366 INFO kablam!    |
Sep 10 21:53:17.366 INFO kablam! 20 | #[experimental]
Sep 10 21:53:17.366 INFO kablam!    |   ^^^^^^^^^^^^
Sep 10 21:53:17.366 INFO kablam!    |
Sep 10 21:53:17.366 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 21:53:17.366 INFO kablam! 
Sep 10 21:53:17.366 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 21:53:17.366 INFO kablam!    --> src/lib.rs:196:3
Sep 10 21:53:17.366 INFO kablam!     |
Sep 10 21:53:17.366 INFO kablam! 196 | #[experimental]
Sep 10 21:53:17.367 INFO kablam!     |   ^^^^^^^^^^^^
Sep 10 21:53:17.367 INFO kablam!     |
Sep 10 21:53:17.367 INFO kablam!     = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 21:53:17.367 INFO kablam! 
Sep 10 21:53:17.370 INFO kablam! error: aborting due to 3 previous errors
Sep 10 21:53:17.370 INFO kablam! 
Sep 10 21:53:17.370 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 10 21:53:17.390 INFO kablam! error: Could not compile `buildable`.
Sep 10 21:53:17.390 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 21:53:17.478 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 21:53:17.478 INFO kablam!   --> src/lib.rs:20:3
Sep 10 21:53:17.478 INFO kablam!    |
Sep 10 21:53:17.478 INFO kablam! 20 | #[experimental]
Sep 10 21:53:17.478 INFO kablam!    |   ^^^^^^^^^^^^
Sep 10 21:53:17.478 INFO kablam!    |
Sep 10 21:53:17.478 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 21:53:17.478 INFO kablam! 
Sep 10 21:53:17.478 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 21:53:17.478 INFO kablam!    --> src/lib.rs:196:3
Sep 10 21:53:17.478 INFO kablam!     |
Sep 10 21:53:17.478 INFO kablam! 196 | #[experimental]
Sep 10 21:53:17.478 INFO kablam!     |   ^^^^^^^^^^^^
Sep 10 21:53:17.478 INFO kablam!     |
Sep 10 21:53:17.478 INFO kablam!     = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 21:53:17.478 INFO kablam! 
Sep 10 21:53:17.554 INFO kablam! error: aborting due to 3 previous errors
Sep 10 21:53:17.554 INFO kablam! 
Sep 10 21:53:17.554 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 10 21:53:17.558 INFO kablam! error: Could not compile `buildable`.
Sep 10 21:53:17.558 INFO kablam! 
Sep 10 21:53:17.558 INFO kablam! To learn more, run the command again with --verbose.
Sep 10 21:53:17.559 INFO kablam! su: No module specific data is present
Sep 10 21:53:18.351 INFO running `"docker" "rm" "-f" "a4898293b820a356780b3e04306b25a40993a716062a2c109b6cad0276a9e03f"`
Sep 10 21:53:18.507 INFO blam! a4898293b820a356780b3e04306b25a40993a716062a2c109b6cad0276a9e03f