Sep 21 04:38:47.217 INFO checking rfcalcs-0.1.1 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 04:38:47.217 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 04:38:47.217 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-4/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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 +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 04:38:47.420 INFO blam! 15cab68105cb58a1415dae197fc043d797ce89d72caf556c3a8f5a76dc3e12cd
Sep 21 04:38:47.422 INFO running `"docker" "start" "-a" "15cab68105cb58a1415dae197fc043d797ce89d72caf556c3a8f5a76dc3e12cd"`
Sep 21 04:38:48.710 INFO kablam! usermod: no changes
Sep 21 04:38:48.758 INFO kablam!     Checking rfcalcs v0.1.1 (/source)
Sep 21 04:38:48.960 INFO kablam! error[E0658]: attributes on expressions are experimental. (see issue #15701)
Sep 21 04:38:48.960 INFO kablam!   --> src/lib.rs:33:9
Sep 21 04:38:48.960 INFO kablam!    |
Sep 21 04:38:48.960 INFO kablam! 33 |         /// Test against precalculated results
Sep 21 04:38:48.960 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 04:38:48.960 INFO kablam!    |
Sep 21 04:38:48.960 INFO kablam!    = help: add #![feature(stmt_expr_attributes)] to the crate attributes to enable
Sep 21 04:38:48.960 INFO kablam!    = help: `///` is for documentation comments. For a plain comment, use `//`.
Sep 21 04:38:48.960 INFO kablam! 
Sep 21 04:38:48.962 INFO kablam! error: aborting due to previous error
Sep 21 04:38:48.962 INFO kablam! 
Sep 21 04:38:48.962 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 21 04:38:48.966 INFO kablam! error: Could not compile `rfcalcs`.
Sep 21 04:38:48.966 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 21 04:38:48.999 INFO kablam! warning: the feature `use_extern_macros` has been stable since 1.30.0 and no longer requires an attribute to enable
Sep 21 04:38:48.999 INFO kablam!  --> src/lib.rs:1:12
Sep 21 04:38:48.999 INFO kablam!   |
Sep 21 04:38:48.999 INFO kablam! 1 | #![feature(use_extern_macros)]
Sep 21 04:38:48.999 INFO kablam!   |            ^^^^^^^^^^^^^^^^^
Sep 21 04:38:48.999 INFO kablam!   |
Sep 21 04:38:48.999 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 21 04:38:48.999 INFO kablam! 
Sep 21 04:38:49.027 INFO kablam! error: build failed
Sep 21 04:38:49.029 INFO kablam! su: No module specific data is present
Sep 21 04:38:49.951 INFO running `"docker" "rm" "-f" "15cab68105cb58a1415dae197fc043d797ce89d72caf556c3a8f5a76dc3e12cd"`
Sep 21 04:38:50.053 INFO blam! 15cab68105cb58a1415dae197fc043d797ce89d72caf556c3a8f5a76dc3e12cd