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}