title: Error rust syncing channel updates 'nightly --- (error reading rustc version)'
body: <p>I'm having errors with autocomplete so I decided to install everything again but this having this error when doing:</p>
  
  <pre><code>rustup update nightly
  </code></pre>
  
  <blockquote>
    <p>info: syncing channel updates for 'nightly-x86_64-unknown-linux-gnu'</p>
    
    <p>nightly-x86_64-unknown-linux-gnu unchanged - (error reading rustc
    version)</p>
  </blockquote>
  
  <p>in rust rustc 1.17.0 </p>