Forgot I switched order ot parameters to match C call

core/src/main/java/org/jruby/RubyString.java

@@ -2656,7 +2656,7 @@ public RubyString crypt(ThreadContext context, IRubyObject other) {
         }
 
         RubyString result = RubyString.newString(context.runtime,
-                context.runtime.getPosix().crypt(salt, asJavaString()).toString());
+                context.runtime.getPosix().crypt(asJavaString(), salt).toString());
         result.infectBy(this);
         result.infectBy(otherStr);
         return result;