std.fmt.format: tuple parameter instead of var args

lib/std/priority_queue.zig

@@ -199,19 +199,19 @@ pub fn PriorityQueue(comptime T: type) type {
         }
 
         fn dump(self: *Self) void {
-            warn("{{ ");
-            warn("items: ");
+            warn("{{ ", .{});
+            warn("items: ", .{});
             for (self.items) |e, i| {
                 if (i >= self.len) break;
-                warn("{}, ", e);
+                warn("{}, ", .{e});
             }
-            warn("array: ");
+            warn("array: ", .{});
             for (self.items) |e, i| {
-                warn("{}, ", e);
+                warn("{}, ", .{e});
             }
-            warn("len: {} ", self.len);
-            warn("capacity: {}", self.capacity());
-            warn(" }}\n");
+            warn("len: {} ", .{self.len});
+            warn("capacity: {}", .{self.capacity()});
+            warn(" }}\n", .{});
         }
     };
 }