https://github.com/junit-team/junit4,7167b23b3ba7dd79410f6e9db350d16cbe30617b,.,junit.framework.TestSuite$1.warning

[lycoris106]

This test name string does not correspond to a real test.

[darko-marinov]

It looks like an anonymous inner class. Did you try to run NonDex on the entire module (without -Dtest=...) to see what it reports?