While using devtool to do a recipe upgrade from 1.5 -> 2.1.1, I got a failure after I attempted a finish (moving the workspace/recipe -> meta-intel/microcode). It seems that the upstream changed their top-level from iucode_tools -> iucode-tools. Devtool seems to unpack it into the workspace/sources/iucode_tools, but since that's "external source" it does not notice the top-level dir change.
Now implemented in master: http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=fcb84383ce9b555c13772515ec4f1f1f9b34737d