Jul 12 00:25:36.014 INFO checking rfcalcs-0.1.1 against try#d39a6f7eddafd45dcc60e99001b8cd08c2bd3255 for pr-52234
Jul 12 00:25:36.014 INFO running: cargo +d39a6f7eddafd45dcc60e99001b8cd08c2bd3255-alt check --frozen --all --all-targets
Jul 12 00:25:36.014 INFO creating container for: cargo +d39a6f7eddafd45dcc60e99001b8cd08c2bd3255-alt check --frozen --all --all-targets
Jul 12 00:25:36.014 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-52234/try#d39a6f7eddafd45dcc60e99001b8cd08c2bd3255:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-52234/worker-5/try#d39a6f7eddafd45dcc60e99001b8cd08c2bd3255:/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 +d39a6f7eddafd45dcc60e99001b8cd08c2bd3255-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Jul 12 00:25:36.230 INFO blam! 469ce898cb86b0522b799b66af87d3525100574d84a393bb908e37469f09894d
Jul 12 00:25:36.233 INFO running `"docker" "start" "-a" "469ce898cb86b0522b799b66af87d3525100574d84a393bb908e37469f09894d"`
Jul 12 00:25:37.547 INFO kablam!     Checking assert_approx_eq v1.0.0
Jul 12 00:25:37.970 INFO kablam!     Checking rfcalcs v0.1.1 (file:///source)
Jul 12 00:25:38.147 INFO kablam! error[E0658]: attributes on expressions are experimental. (see issue #15701)
Jul 12 00:25:38.148 INFO kablam!   --> src/lib.rs:33:9
Jul 12 00:25:38.148 INFO kablam!    |
Jul 12 00:25:38.148 INFO kablam! 33 |         /// Test against precalculated results
Jul 12 00:25:38.148 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Jul 12 00:25:38.148 INFO kablam!    |
Jul 12 00:25:38.148 INFO kablam!    = help: add #![feature(stmt_expr_attributes)] to the crate attributes to enable
Jul 12 00:25:38.148 INFO kablam!    = help: `///` is for documentation comments. For a plain comment, use `//`.
Jul 12 00:25:38.148 INFO kablam! 
Jul 12 00:25:38.615 INFO kablam! warning: this feature has been stable since 1.29.0. Attribute no longer needed
Jul 12 00:25:38.615 INFO kablam!  --> src/lib.rs:1:12
Jul 12 00:25:38.615 INFO kablam!   |
Jul 12 00:25:38.615 INFO kablam! 1 | #![feature(use_extern_macros)]
Jul 12 00:25:38.615 INFO kablam!   |            ^^^^^^^^^^^^^^^^^
Jul 12 00:25:38.615 INFO kablam!   |
Jul 12 00:25:38.615 INFO kablam!   = note: #[warn(stable_features)] on by default
Jul 12 00:25:38.615 INFO kablam! 
Jul 12 00:25:38.638 INFO kablam! error: aborting due to previous error
Jul 12 00:25:38.638 INFO kablam! 
Jul 12 00:25:38.638 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Jul 12 00:25:38.645 INFO kablam! error: Could not compile `rfcalcs`.
Jul 12 00:25:38.645 INFO kablam! warning: build failed, waiting for other jobs to finish...
Jul 12 00:25:38.761 INFO kablam! error: build failed
Jul 12 00:25:38.763 INFO kablam! su: No module specific data is present
Jul 12 00:25:39.323 INFO running `"docker" "rm" "-f" "469ce898cb86b0522b799b66af87d3525100574d84a393bb908e37469f09894d"`
Jul 12 00:25:39.524 INFO blam! 469ce898cb86b0522b799b66af87d3525100574d84a393bb908e37469f09894d