IO::Multiplex on Version 5.38.2 Generates Modification of a read-only value attempted error

This is an upstream issue (and is uncorrected due to the age of the module).

It stopped working on Windows at Perl 5.18, and hasn’t passed a test on Windows for anyone running any Perl distro on Windows since then.

http://matrix.cpantesters.org/?dist=IO-Multiplex+1.16