'To go to rack' definitions:

Definition of 'To go to rack'

From: GCIDE

Rack \Rack\, n. [See Wreck.] A wreck; destruction. [Obs., except in a few phrases.] [1913 Webster]
Rack and ruin, destruction; utter ruin. [Colloq.]
To go to rack, to perish; to be destroyed. [Colloq.] "All goes to rack." --Pepys. [1913 Webster]