Aug 01 20:19:16.837 INFO checking tock-registers-0.1.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 20:19:16.837 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:19:16.838 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:19:16.838 INFO running `"docker" "create" "-v" "/tmp/crater.1a3z3CF2HRxi:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2+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 01 20:19:17.021 INFO blam! 9fc27d40ac161d9397dcb674a89b362b8b30c8bd5c07e4193792e09792840362
Aug 01 20:19:17.022 INFO running `"docker" "start" "-a" "9fc27d40ac161d9397dcb674a89b362b8b30c8bd5c07e4193792e09792840362"`
Aug 01 20:19:18.229 INFO kablam!     Checking tock-registers v0.1.0 (file:///source)
Aug 01 20:19:18.356 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:19:18.357 INFO kablam!  --> src/lib.rs:5:1
Aug 01 20:19:18.357 INFO kablam!   |
Aug 01 20:19:18.357 INFO kablam! 5 | #![feature(const_fn)]
Aug 01 20:19:18.357 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^
Aug 01 20:19:18.357 INFO kablam! 
Aug 01 20:19:18.358 INFO kablam! error: aborting due to previous error
Aug 01 20:19:18.358 INFO kablam! 
Aug 01 20:19:18.358 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:19:18.361 INFO kablam! error: Could not compile `tock-registers`.
Aug 01 20:19:18.362 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 20:19:18.436 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:19:18.436 INFO kablam!  --> src/lib.rs:5:1
Aug 01 20:19:18.436 INFO kablam!   |
Aug 01 20:19:18.436 INFO kablam! 5 | #![feature(const_fn)]
Aug 01 20:19:18.436 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^
Aug 01 20:19:18.436 INFO kablam! 
Aug 01 20:19:18.437 INFO kablam! error: aborting due to previous error
Aug 01 20:19:18.437 INFO kablam! 
Aug 01 20:19:18.437 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:19:18.442 INFO kablam! error: Could not compile `tock-registers`.
Aug 01 20:19:18.442 INFO kablam! 
Aug 01 20:19:18.442 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 20:19:18.444 INFO kablam! su: No module specific data is present
Aug 01 20:19:19.255 INFO running `"docker" "rm" "-f" "9fc27d40ac161d9397dcb674a89b362b8b30c8bd5c07e4193792e09792840362"`
Aug 01 20:19:19.350 INFO blam! 9fc27d40ac161d9397dcb674a89b362b8b30c8bd5c07e4193792e09792840362