$ time -p gmake check
GEN public-submodule-commit
gmake check-recursive
gmake[1]: Entering directory `/usr/local/build/guile-2.0.6_2.6.32-5-amd64_002'
Making check in lib
gmake[2]: Entering directory
`/usr/local/build/guile-2.0.6_2.6.32-5-amd64_002/lib'
gmake check-recursive
gmake[3]: En
Well based on what I see here :
http://lists.gnu.org/archive/html/bug-guile/2011-03/msg00135.html
.. this is a bug that has been around a while and isn't going away easily.
$ ./check-guile threads.test
Testing /usr/local/build/guile-2.0.6_2.6.32-5-amd64_002/meta/guile ...
threads.test
with