procedure if they arise while
setting up (that is, before the first call to &rsquo;await&rsquo; is made), which
shouldn&rsquo;t happen unless memory is exhausted.  With versions of this
library before 0.13, any exceptions because of read errors would
propagate out of event-loop-run! and could not be caught locally.
Having read errors interfering with anything using the event loop in
this way was not a good approach, so from version 0.13 of this library
all read exceptions will propagate in the first instanc