title: rpc error: code = Unknown desc = failed to build LLB
body: <p>I am working on this <code>docker build</code> which fails on this line:</p>
  
  <pre><code>RUN --mount=type=ssh pip install --no-cache-dir -r requirements.txt
  </code></pre>
  
  <p>The terminal output shows all the requirements being installed but then I get the following failure:</p>
  
  <pre><code>failed to solve with frontend dockerfile.v0: 
  failed to solve with frontend gateway.v0: 
  rpc error: code = Unknown desc = failed to build LLB: 
  executor failed running [/bin/sh -c pip install --no-cache-dir -r requirements.txt]: 
  runc did not terminate sucessfully
  </code></pre>
  
  <p>I am on Windows 10 + WSL (v1) + Ubuntu 18.04</p>
  
  <p>A colleague runs the same project on Mac OS and does not have any issues...</p>
  
  <p>Any idea what's going wrong? How do I debug it? </p>