Sep 04 06:09:13.035 INFO checking rfcalcs-0.1.1 against try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0 for pr-53893
Sep 04 06:09:13.035 INFO running: cargo +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets
Sep 04 06:09:13.036 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53893/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-1/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/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 +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 06:09:13.218 INFO blam! 8a8b264eb96e42f378293a10e2e098c5237e7479098813ad260ebd826b3d0267
Sep 04 06:09:13.220 INFO running `"docker" "start" "-a" "8a8b264eb96e42f378293a10e2e098c5237e7479098813ad260ebd826b3d0267"`
Sep 04 06:09:13.906 INFO kablam!     Checking rfcalcs v0.1.1 (file:///source)
Sep 04 06:09:13.954 INFO kablam! error[E0658]: attributes on expressions are experimental. (see issue #15701)
Sep 04 06:09:13.954 INFO kablam!   --> src/lib.rs:33:9
Sep 04 06:09:13.954 INFO kablam!    |
Sep 04 06:09:13.954 INFO kablam! 33 |         /// Test against precalculated results
Sep 04 06:09:13.954 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 04 06:09:13.954 INFO kablam!    |
Sep 04 06:09:13.954 INFO kablam!    = help: add #![feature(stmt_expr_attributes)] to the crate attributes to enable
Sep 04 06:09:13.954 INFO kablam!    = help: `///` is for documentation comments. For a plain comment, use `//`.
Sep 04 06:09:13.954 INFO kablam! 
Sep 04 06:09:14.225 INFO kablam! error: aborting due to previous error
Sep 04 06:09:14.225 INFO kablam! 
Sep 04 06:09:14.225 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 04 06:09:14.230 INFO kablam! error: Could not compile `rfcalcs`.
Sep 04 06:09:14.230 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 06:09:14.314 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 06:09:14.316 INFO kablam!  --> src/lib.rs:1:12
Sep 04 06:09:14.316 INFO kablam!   |
Sep 04 06:09:14.316 INFO kablam! 1 | #![feature(use_extern_macros)]
Sep 04 06:09:14.316 INFO kablam!   |            ^^^^^^^^^^^^^^^^^
Sep 04 06:09:14.316 INFO kablam!   |
Sep 04 06:09:14.316 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 04 06:09:14.316 INFO kablam! 
Sep 04 06:09:14.353 INFO kablam! error: build failed
Sep 04 06:09:14.354 INFO kablam! su: No module specific data is present
Sep 04 06:09:14.780 INFO running `"docker" "rm" "-f" "8a8b264eb96e42f378293a10e2e098c5237e7479098813ad260ebd826b3d0267"`
Sep 04 06:09:14.862 INFO blam! 8a8b264eb96e42f378293a10e2e098c5237e7479098813ad260ebd826b3d0267