It says: checking the GLIBC_VERSION version... unsupported version 2.1 Valgrind requires glibc version 2.2 - 2.17 but glibc 2.19-r1 is unmasked by default Reproducible: Always
Probably INVALID, unless meant as a stable request for dev-util/valgrind-3.9.0.
*** This bug has been marked as a duplicate of bug 519180 ***