Aug 02 00:37:25.010 INFO checking rfcalcs-0.1.1 against 1.27.2 for lazy_static-1
Aug 02 00:37:25.010 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:37:25.011 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:37:25.011 INFO running `"docker" "create" "-v" "/tmp/crater.xuVmAj2ppj4T:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-2/1.27.2:/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 00:37:25.222 INFO blam! f672b7b8c1cfa037fe13374077419fd5ce2e8775b4303ea0d520e858f5b81d23
Aug 02 00:37:25.224 INFO running `"docker" "start" "-a" "f672b7b8c1cfa037fe13374077419fd5ce2e8775b4303ea0d520e858f5b81d23"`
Aug 02 00:37:26.572 INFO kablam!     Checking assert_approx_eq v1.0.0
Aug 02 00:37:26.908 INFO kablam!     Checking rfcalcs v0.1.1 (file:///source)
Aug 02 00:37:27.213 INFO kablam! error[E0658]: attributes on expressions are experimental. (see issue #15701)
Aug 02 00:37:27.213 INFO kablam!   --> src/lib.rs:33:9
Aug 02 00:37:27.213 INFO kablam!    |
Aug 02 00:37:27.213 INFO kablam! 33 |         /// Test against precalculated results
Aug 02 00:37:27.213 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 00:37:27.214 INFO kablam!    |
Aug 02 00:37:27.214 INFO kablam!    = help: `///` is for documentation comments. For a plain comment, use `//`.
Aug 02 00:37:27.214 INFO kablam! 
Aug 02 00:37:27.269 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 00:37:27.269 INFO kablam!  --> src/lib.rs:1:1
Aug 02 00:37:27.269 INFO kablam!   |
Aug 02 00:37:27.269 INFO kablam! 1 | #![feature(use_extern_macros)]
Aug 02 00:37:27.269 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 00:37:27.269 INFO kablam! 
Aug 02 00:37:27.269 INFO kablam! error: aborting due to previous error
Aug 02 00:37:27.269 INFO kablam! 
Aug 02 00:37:27.269 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 00:37:27.275 INFO kablam! error: Could not compile `rfcalcs`.
Aug 02 00:37:27.275 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 00:37:27.346 INFO kablam! error: aborting due to previous error
Aug 02 00:37:27.347 INFO kablam! 
Aug 02 00:37:27.347 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Aug 02 00:37:27.353 INFO kablam! error: Could not compile `rfcalcs`.
Aug 02 00:37:27.354 INFO kablam! 
Aug 02 00:37:27.354 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 00:37:27.355 INFO kablam! su: No module specific data is present
Aug 02 00:37:27.997 INFO running `"docker" "rm" "-f" "f672b7b8c1cfa037fe13374077419fd5ce2e8775b4303ea0d520e858f5b81d23"`
Aug 02 00:37:28.177 INFO blam! f672b7b8c1cfa037fe13374077419fd5ce2e8775b4303ea0d520e858f5b81d23