title: I am getting "Bash wrote one or more lines to the standard error stream" in Azure pipeline step
body: <p>I am running the following <code>-bash</code> command:</p>
  
  <ul>
  <li>bash: $(ci_scripts_path)/01_install_python_tools.sh
  displayName: 'Install python 2.7 tools'
  failOnStderr: true</li>
  </ul>
  
  <p>while the sh script <code>01_install_python_tools.sh</code> completes successfully, but anyhow I get this error for the step:
  <code>##[error]Bash wrote one or more lines to the standard error stream.</code></p>