Aug 02 01:05:10.816 INFO checking register-0.1.1 against 1.27.2 for lazy_static-1
Aug 02 01:05:10.816 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 01:05:10.816 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 01:05:10.817 INFO running `"docker" "create" "-v" "/tmp/crater.LXudeWnffltW:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2:/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 01:05:11.014 INFO blam! ce71d67d6ea5a1866cee9e1564441d9ed51ab3f822f1c2876fa74b0f5b32a95f
Aug 02 01:05:11.017 INFO running `"docker" "start" "-a" "ce71d67d6ea5a1866cee9e1564441d9ed51ab3f822f1c2876fa74b0f5b32a95f"`
Aug 02 01:05:12.779 INFO kablam!     Checking tock-registers v0.1.0
Aug 02 01:05:12.959 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 01:05:12.959 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/tock-registers-0.1.0/src/lib.rs:5:1
Aug 02 01:05:12.959 INFO kablam!   |
Aug 02 01:05:12.959 INFO kablam! 5 | #![feature(const_fn)]
Aug 02 01:05:12.959 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^
Aug 02 01:05:12.959 INFO kablam! 
Aug 02 01:05:12.961 INFO kablam! error: aborting due to previous error
Aug 02 01:05:12.961 INFO kablam! 
Aug 02 01:05:12.961 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 01:05:12.967 INFO kablam! error: Could not compile `tock-registers`.
Aug 02 01:05:12.967 INFO kablam! 
Aug 02 01:05:12.967 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 01:05:12.969 INFO kablam! su: No module specific data is present
Aug 02 01:05:13.547 INFO running `"docker" "rm" "-f" "ce71d67d6ea5a1866cee9e1564441d9ed51ab3f822f1c2876fa74b0f5b32a95f"`
Aug 02 01:05:13.694 INFO blam! ce71d67d6ea5a1866cee9e1564441d9ed51ab3f822f1c2876fa74b0f5b32a95f