truth0/truth — pull request #59 by lowasseratgoogle (2013-05-29 20:22:20+00:00)
Title: Annotate CollectionSubject.has() methods with @SafeVarargs where appropriate.

I must admit that I'm not 100% clear on whether this restricts Truth *users* to be compiling with the Java 7 javac, or whether they must be compiling against the Java 7 JDK, or what.