title: "the Package.resolved file is most likely severely out-of-date and is preventing correct resolution"
body: <p>I'm getting the following error when trying to build. It shows up as the only item in the build log, too.</p>
  <img src="https://i.stack.imgur.com/PEPbW.png" height="99" alt="Package Loading: the Package.resolved file is most likely severely out-of-date and is preventing correct resolution; delete the resolved file and try again" />
  <p>Here are the packages I'm using:</p>
  <p><img src="https://i.stack.imgur.com/j8Aeb.png" height="275" alt="5 Swift packages listed in the project settings: SimpleLogging, OptionalTools, FunctionTools, SpecialString, and Swift-TODO. The first 3 are URLs to git files (they end in .git), and the last 2 are URLs to the repos themselves (they end in a slash)." /><img src="https://i.stack.imgur.com/oFfoi.png" width="340" alt="The same 5 packages as above, but listed in the sidebar, proving they were resolved successfully." /></p>