Sep 04 06:09:13.189 INFO checking rfcalcs-0.1.1 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 06:09:13.189 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 06:09:13.189 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-0/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 06:09:13.391 INFO blam! 1d1026f054c142d3bde833f25d742e6e10e93914ed97fa71b4a9550a01a6e51c
Sep 04 06:09:13.393 INFO running `"docker" "start" "-a" "1d1026f054c142d3bde833f25d742e6e10e93914ed97fa71b4a9550a01a6e51c"`
Sep 04 06:09:14.197 INFO kablam!     Checking rfcalcs v0.1.1 (file:///source)
Sep 04 06:09:14.246 INFO kablam! error[E0658]: attributes on expressions are experimental. (see issue #15701)
Sep 04 06:09:14.246 INFO kablam!   --> src/lib.rs:33:9
Sep 04 06:09:14.246 INFO kablam!    |
Sep 04 06:09:14.246 INFO kablam! 33 |         /// Test against precalculated results
Sep 04 06:09:14.246 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 04 06:09:14.246 INFO kablam!    |
Sep 04 06:09:14.246 INFO kablam!    = help: add #![feature(stmt_expr_attributes)] to the crate attributes to enable
Sep 04 06:09:14.246 INFO kablam!    = help: `///` is for documentation comments. For a plain comment, use `//`.
Sep 04 06:09:14.247 INFO kablam! 
Sep 04 06:09:14.527 INFO kablam! error: aborting due to previous error
Sep 04 06:09:14.527 INFO kablam! 
Sep 04 06:09:14.527 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 04 06:09:14.532 INFO kablam! error: Could not compile `rfcalcs`.
Sep 04 06:09:14.532 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 06:09:14.550 INFO kablam! warning: the feature `use_extern_macros` has been stable since 1.30.0 and no longer requires an attribute to enable
Sep 04 06:09:14.551 INFO kablam!  --> src/lib.rs:1:12
Sep 04 06:09:14.551 INFO kablam!   |
Sep 04 06:09:14.551 INFO kablam! 1 | #![feature(use_extern_macros)]
Sep 04 06:09:14.551 INFO kablam!   |            ^^^^^^^^^^^^^^^^^
Sep 04 06:09:14.551 INFO kablam!   |
Sep 04 06:09:14.551 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 04 06:09:14.551 INFO kablam! 
Sep 04 06:09:14.582 INFO kablam! error: build failed
Sep 04 06:09:14.583 INFO kablam! su: No module specific data is present
Sep 04 06:09:15.155 INFO running `"docker" "rm" "-f" "1d1026f054c142d3bde833f25d742e6e10e93914ed97fa71b4a9550a01a6e51c"`
Sep 04 06:09:15.257 INFO blam! 1d1026f054c142d3bde833f25d742e6e10e93914ed97fa71b4a9550a01a6e51c