buildworld error: rm: tar: is a directory

I'm having problems with current buildworld in gnu now on two different
machines in current(today).  The latest is the following:

rm: tar: is a directory
*** Error code 1

Stop in /usr/src/gnu/usr.bin/tar.
*** Error code 1

Stop in /usr/src/gnu/usr.bin/tar.
*** Error code 1

Stop in /usr/src/gnu/usr.bin.
*** Error code 1

I'm begining to wonder if I'm getting a complete checkout with cvsup
of the gnu tree.

Thanks for any suggestions,

ed


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