Aug 02 14:03:37.875 INFO checking bitfield-register-0.2.1 against 1.27.2 for lazy_static-1
Aug 02 14:03:37.875 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:03:37.875 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:03:37.875 INFO running `"docker" "create" "-v" "/tmp/crater.Qpte1BlkgN8s:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2:/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 14:03:38.149 INFO blam! a9e61a8bd93640c66906f1b63312596dff4c140d2bdf722090ea1d00a21b408e
Aug 02 14:03:38.149 INFO running `"docker" "start" "-a" "a9e61a8bd93640c66906f1b63312596dff4c140d2bdf722090ea1d00a21b408e"`
Aug 02 14:03:39.222 INFO kablam!    Compiling bitfield-register-macro v0.2.1
Aug 02 14:03:41.230 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:03:41.230 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bitfield-register-macro-0.2.1/src/lib.rs:1:1
Aug 02 14:03:41.230 INFO kablam!   |
Aug 02 14:03:41.230 INFO kablam! 1 | #![feature(proc_macro)]
Aug 02 14:03:41.230 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 14:03:41.230 INFO kablam! 
Aug 02 14:03:41.231 INFO kablam! error: aborting due to previous error
Aug 02 14:03:41.231 INFO kablam! 
Aug 02 14:03:41.231 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 14:03:41.242 INFO kablam! error: Could not compile `bitfield-register-macro`.
Aug 02 14:03:41.242 INFO kablam! 
Aug 02 14:03:41.242 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 14:03:41.243 INFO kablam! su: No module specific data is present
Aug 02 14:03:41.914 INFO running `"docker" "rm" "-f" "a9e61a8bd93640c66906f1b63312596dff4c140d2bdf722090ea1d00a21b408e"`
Aug 02 14:03:42.102 INFO blam! a9e61a8bd93640c66906f1b63312596dff4c140d2bdf722090ea1d00a21b408e