Found the following hamletworks.org entries referring to line 3892-3

View Commentary Note for 3891, etc.
3891 But let this same be presently perform'd 38915.2.393
3892-3 Euen {while} <whiles> mens mindes are wilde, | {least} <lest> more mischance 
3894 On plots and errores happen.5.2.394

View Material Textual Note for 3891, etc.
3891 But let this same be presently perform'd 38915.2.393
3892-3 Euen {while} <whiles> mens mindes are wilde, | {least} <lest> more mischance 
3894 On plots and errores happen.5.2.394