title: Xcode 12 beta 1: po does not work in debugger
body: <p>When reaching a breakpoint during debugging, the console says:</p>
  <pre><code>2020-07-05 10:20:41.726165+0200 XXX[77358:16150444] [debug] insertSection
  Cannot create Swift scratch context (couldn't load the Swift stdlib)(lldb) 
  </code></pre>
  <p>After that, the „po“ command does not work:</p>
  <pre><code>(lldb) po structureItem 
  (lldb) 
  </code></pre>
  <p>While the „v“ command shows results:</p>
  <pre><code>(lldb) v structureItem
  (XYZ.StructureItem) structureItem = 0x000060000168d580 {
  …
  }
  (lldb) 
  </code></pre>