Aug 31 16:39:58.803 INFO checking rfcalcs-0.1.1 against try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b for pr-53578
Aug 31 16:39:58.803 INFO running: cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets
Aug 31 16:39:58.803 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53578/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-0/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/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 +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 16:39:58.976 INFO blam! 8e9bfb8d09f9986a95ec4cae900ce60b6ac6a4149aa50787f452a9495fc55762
Aug 31 16:39:58.977 INFO running `"docker" "start" "-a" "8e9bfb8d09f9986a95ec4cae900ce60b6ac6a4149aa50787f452a9495fc55762"`
Aug 31 16:39:59.672 INFO kablam!     Checking rfcalcs v0.1.1 (file:///source)
Aug 31 16:39:59.725 INFO kablam! error[E0658]: attributes on expressions are experimental. (see issue #15701)
Aug 31 16:39:59.725 INFO kablam!   --> src/lib.rs:33:9
Aug 31 16:39:59.725 INFO kablam!    |
Aug 31 16:39:59.725 INFO kablam! 33 |         /// Test against precalculated results
Aug 31 16:39:59.725 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 31 16:39:59.725 INFO kablam!    |
Aug 31 16:39:59.725 INFO kablam!    = help: add #![feature(stmt_expr_attributes)] to the crate attributes to enable
Aug 31 16:39:59.725 INFO kablam!    = help: `///` is for documentation comments. For a plain comment, use `//`.
Aug 31 16:39:59.725 INFO kablam! 
Aug 31 16:39:59.970 INFO kablam! error: aborting due to previous error
Aug 31 16:39:59.970 INFO kablam! 
Aug 31 16:39:59.970 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Aug 31 16:39:59.975 INFO kablam! error: Could not compile `rfcalcs`.
Aug 31 16:39:59.975 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 31 16:40:00.024 INFO kablam! warning: the feature `use_extern_macros` has been stable since 1.30.0 and no longer requires an attribute to enable
Aug 31 16:40:00.024 INFO kablam!  --> src/lib.rs:1:12
Aug 31 16:40:00.025 INFO kablam!   |
Aug 31 16:40:00.025 INFO kablam! 1 | #![feature(use_extern_macros)]
Aug 31 16:40:00.025 INFO kablam!   |            ^^^^^^^^^^^^^^^^^
Aug 31 16:40:00.025 INFO kablam!   |
Aug 31 16:40:00.025 INFO kablam!   = note: #[warn(stable_features)] on by default
Aug 31 16:40:00.025 INFO kablam! 
Aug 31 16:40:00.055 INFO kablam! error: build failed
Aug 31 16:40:00.056 INFO kablam! su: No module specific data is present
Aug 31 16:40:00.617 INFO running `"docker" "rm" "-f" "8e9bfb8d09f9986a95ec4cae900ce60b6ac6a4149aa50787f452a9495fc55762"`
Aug 31 16:40:00.748 INFO blam! 8e9bfb8d09f9986a95ec4cae900ce60b6ac6a4149aa50787f452a9495fc55762