Sep 10 08:05:09.932 INFO checking tape-0.1.8 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 08:05:09.932 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 08:05:09.932 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-3/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 08:05:10.187 INFO blam! 48c1fd5428d277d920b1d4634defc6f747221db4099e9fab1c89582a93208a9a
Sep 10 08:05:10.189 INFO running `"docker" "start" "-a" "48c1fd5428d277d920b1d4634defc6f747221db4099e9fab1c89582a93208a9a"`
Sep 10 08:05:11.689 INFO kablam! usermod: no changes
Sep 10 08:05:11.797 INFO kablam!    Compiling libtar-sys v0.1.9
Sep 10 08:05:21.774 INFO kablam!     Checking tape v0.1.8 (file:///source)
Sep 10 08:05:21.990 INFO kablam! error[E0658]: The attribute `unsafe_destructor` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 10 08:05:21.990 INFO kablam!   --> src/lib.rs:79:3
Sep 10 08:05:21.990 INFO kablam!    |
Sep 10 08:05:21.990 INFO kablam! 79 | #[unsafe_destructor]
Sep 10 08:05:21.990 INFO kablam!    |   ^^^^^^^^^^^^^^^^^
Sep 10 08:05:21.990 INFO kablam!    |
Sep 10 08:05:21.990 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 08:05:21.990 INFO kablam! 
Sep 10 08:05:21.990 INFO kablam! error: aborting due to previous error
Sep 10 08:05:21.990 INFO kablam! 
Sep 10 08:05:21.990 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 10 08:05:21.991 INFO kablam! error: Could not compile `tape`.
Sep 10 08:05:21.991 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 08:05:22.006 INFO kablam! error[E0658]: The attribute `unsafe_destructor` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 10 08:05:22.006 INFO kablam!   --> src/lib.rs:79:3
Sep 10 08:05:22.006 INFO kablam!    |
Sep 10 08:05:22.006 INFO kablam! 79 | #[unsafe_destructor]
Sep 10 08:05:22.006 INFO kablam!    |   ^^^^^^^^^^^^^^^^^
Sep 10 08:05:22.006 INFO kablam!    |
Sep 10 08:05:22.006 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 08:05:22.006 INFO kablam! 
Sep 10 08:05:22.006 INFO kablam! error: aborting due to previous error
Sep 10 08:05:22.006 INFO kablam! 
Sep 10 08:05:22.006 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 10 08:05:22.010 INFO kablam! error: Could not compile `tape`.
Sep 10 08:05:22.010 INFO kablam! 
Sep 10 08:05:22.010 INFO kablam! To learn more, run the command again with --verbose.
Sep 10 08:05:22.015 INFO kablam! su: No module specific data is present
Sep 10 08:05:22.876 INFO running `"docker" "rm" "-f" "48c1fd5428d277d920b1d4634defc6f747221db4099e9fab1c89582a93208a9a"`
Sep 10 08:05:22.992 INFO blam! 48c1fd5428d277d920b1d4634defc6f747221db4099e9fab1c89582a93208a9a