Aug 02 00:37:24.915 INFO checking rfcalcs-0.1.1 against 1.27.2+tmplazy for lazy_static-1
Aug 02 00:37:24.915 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:37:24.915 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:37:24.916 INFO running `"docker" "create" "-v" "/tmp/crater.6V78SIhe2X9O:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2+tmplazy:/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" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 02 00:37:25.167 INFO blam! be96bbec57dc45040fd3b07972f2e62beba62ef9dfccdb219d562237d01df6e2
Aug 02 00:37:25.169 INFO running `"docker" "start" "-a" "be96bbec57dc45040fd3b07972f2e62beba62ef9dfccdb219d562237d01df6e2"`
Aug 02 00:37:26.475 INFO kablam!     Checking rfcalcs v0.1.1 (file:///source)
Aug 02 00:37:26.643 INFO kablam! error[E0658]: attributes on expressions are experimental. (see issue #15701)
Aug 02 00:37:26.643 INFO kablam!   --> src/lib.rs:33:9
Aug 02 00:37:26.643 INFO kablam!    |
Aug 02 00:37:26.643 INFO kablam! 33 |         /// Test against precalculated results
Aug 02 00:37:26.643 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 00:37:26.643 INFO kablam!    |
Aug 02 00:37:26.643 INFO kablam!    = help: `///` is for documentation comments. For a plain comment, use `//`.
Aug 02 00:37:26.643 INFO kablam! 
Aug 02 00:37:26.903 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 00:37:26.904 INFO kablam!  --> src/lib.rs:1:1
Aug 02 00:37:26.904 INFO kablam!   |
Aug 02 00:37:26.904 INFO kablam! 1 | #![feature(use_extern_macros)]
Aug 02 00:37:26.904 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 00:37:26.904 INFO kablam! 
Aug 02 00:37:26.905 INFO kablam! error: aborting due to previous error
Aug 02 00:37:26.906 INFO kablam! 
Aug 02 00:37:26.906 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 00:37:26.915 INFO kablam! error: Could not compile `rfcalcs`.
Aug 02 00:37:26.915 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 00:37:26.959 INFO kablam! error: aborting due to previous error
Aug 02 00:37:26.959 INFO kablam! 
Aug 02 00:37:26.959 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Aug 02 00:37:26.968 INFO kablam! error: Could not compile `rfcalcs`.
Aug 02 00:37:26.968 INFO kablam! 
Aug 02 00:37:26.968 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 00:37:26.969 INFO kablam! su: No module specific data is present
Aug 02 00:37:27.862 INFO running `"docker" "rm" "-f" "be96bbec57dc45040fd3b07972f2e62beba62ef9dfccdb219d562237d01df6e2"`
Aug 02 00:37:27.997 INFO blam! be96bbec57dc45040fd3b07972f2e62beba62ef9dfccdb219d562237d01df6e2