! File ended while scanning use of \@xverbatim error starting with commit 0c387de

The following M(n)WE:

\documentclass{beamer}
\begin{document}
\begin{frame}[fragile]
  \frametitle{Beamer's tutorial}
  \framesubtitle{Code for frames}
  Here is how you create a frame with Beamer class:\pause{}
\begin{verbatim}
  \begin{frame}

  \end{frame}
\end{verbatim}
\end{frame}
\end{document}

used to work nicely until commit 6a23fce and fails starting with commit 0c387de with error:

./test.vrb
)
Runaway argument?
^^M  \begin{frame}^^M^^M
! File ended while scanning use of \@xverbatim.
<inserted text> 
                \par 
l.13   \end{frame}