pub fn failingDirSetOwner(userdata: ?*anyopaque, dir: Dir, owner: ?File.Uid, group: ?File.Gid) Dir.SetOwnerError!void
pub fn failingDirSetOwner(userdata: ?*anyopaque, dir: Dir, owner: ?File.Uid, group: ?File.Gid) Dir.SetOwnerError!void { _ = userdata; _ = dir; _ = owner; _ = group; return error.FileNotFound; }