Sep 14 10:42:18.866 INFO checking rfcalcs-0.1.1 against try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0 for pr-53578-1
Sep 14 10:42:18.866 INFO running: cargo +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets
Sep 14 10:42:18.866 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53578-1/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-0/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/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 +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 10:42:19.071 INFO blam! d65268238b9d42f893b354d72b6b645243b1e79be59dcdc30a5cb182d94a037f
Sep 14 10:42:19.076 INFO running `"docker" "start" "-a" "d65268238b9d42f893b354d72b6b645243b1e79be59dcdc30a5cb182d94a037f"`
Sep 14 10:42:19.763 INFO kablam! usermod: no changes
Sep 14 10:42:19.804 INFO kablam!     Checking rfcalcs v0.1.1 (file:///source)
Sep 14 10:42:20.059 INFO kablam! error[E0658]: attributes on expressions are experimental. (see issue #15701)
Sep 14 10:42:20.059 INFO kablam!   --> src/lib.rs:33:9
Sep 14 10:42:20.059 INFO kablam!    |
Sep 14 10:42:20.059 INFO kablam! 33 |         /// Test against precalculated results
Sep 14 10:42:20.059 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 14 10:42:20.059 INFO kablam!    |
Sep 14 10:42:20.059 INFO kablam!    = help: add #![feature(stmt_expr_attributes)] to the crate attributes to enable
Sep 14 10:42:20.059 INFO kablam!    = help: `///` is for documentation comments. For a plain comment, use `//`.
Sep 14 10:42:20.059 INFO kablam! 
Sep 14 10:42:20.059 INFO kablam! error: aborting due to previous error
Sep 14 10:42:20.059 INFO kablam! 
Sep 14 10:42:20.059 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 14 10:42:20.064 INFO kablam! error: Could not compile `rfcalcs`.
Sep 14 10:42:20.064 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 14 10:42:20.092 INFO kablam! warning: the feature `use_extern_macros` has been stable since 1.30.0 and no longer requires an attribute to enable
Sep 14 10:42:20.092 INFO kablam!  --> src/lib.rs:1:12
Sep 14 10:42:20.092 INFO kablam!   |
Sep 14 10:42:20.092 INFO kablam! 1 | #![feature(use_extern_macros)]
Sep 14 10:42:20.092 INFO kablam!   |            ^^^^^^^^^^^^^^^^^
Sep 14 10:42:20.092 INFO kablam!   |
Sep 14 10:42:20.092 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 14 10:42:20.092 INFO kablam! 
Sep 14 10:42:20.146 INFO kablam! error: build failed
Sep 14 10:42:20.147 INFO kablam! su: No module specific data is present
Sep 14 10:42:20.807 INFO running `"docker" "rm" "-f" "d65268238b9d42f893b354d72b6b645243b1e79be59dcdc30a5cb182d94a037f"`
Sep 14 10:42:20.946 INFO blam! d65268238b9d42f893b354d72b6b645243b1e79be59dcdc30a5cb182d94a037f