Thanks for testing this.

If you got to the test units there is a good chance you already built riecoind and possibly also riecoin-qt.

The test units have not been updated and won't compile. To eliminate the errors you need to re-configure.

./configure --disable-tests
make

I'm not sure why it didn't work on debian sid. My plan for this week is to install ubuntu 18.04 and try to build for windows. I'll see if I get a similar error.

The binaries are over 100 MB so they can't be placed on github. Maybe we can put them on the community site.

I'll take a look at GetBlockTemplate a little later.