[Tex/LaTex] Package etoolbox Warning: Patching ‘\begin’ failed!

etoolbox

After updating my MiKTeX 2.9 package, .tex files which compiled perfectly with 0 error 0 warning now gives 0 error 1 warning:

Package etoolbox Warning: Patching '\begin' failed!  (pdflatex)
(etoolbox)  'AtBeginenvironment' will not work

A minimum working example is

\documentclass[11pt]{article}
\usepackage{html}
\usepackage{datetime}
\begin{document}
   MWE!
\end{document}

I don't really like to let unanswered warnings piling ups at the end of compilations, what, short of not using one of the two packages, can I do to suppress the warning?

Best Answer

Because the minimum working example is short enough, it is tempting to try to run the datetime package before the html one, it gives

\documentclass[11pt]{article}
\usepackage{datetime}
\usepackage{html}
\begin{document}
  MWE!
\end{document}

Surprisingly, it works, there is no more warning!