Internal function to check if the MCMC's tracelog file can be created.Source:
Check if the MCMC's tracelog file can be created. Will stop if not. If the tracelog file already exists, it is assumed that a new file can be created, by overwriting the existing one.
a set of BEAST2 options, that are the R equivalent of the BEAST2 command-line options, as can be created by create_beast2_options
Nothing. Will stop if the MCMC's tracelog file is absent and cannot be created.