computation in the current process
    fails.
</div>
</td></tr>
<tr><td align="left"><br>L</td></tr>
<tr><td><a href="OpamTypes.html#EXCEPTIONLexer_error">Lexer_error</a> [<a href="OpamTypes.html">OpamTypes</a>]</td>
<td><div class="info">
Exceptions
</div>
</td></tr>
<tr><td align="left"><br>P</td></tr>
<tr><td><a href="OpamSystem.html#EXCEPTIONProcess_error">Process_error</a> [<a href="OpamSystem.html">OpamSystem</a>]</td>
<td><div class="info">
Exception raised when subprocess fails
</div>
</td></tr>
<tr