A tight fit, but the other way around
When I built up the project bike, I arranged the front rack so that the fork crown stay wrapped around the cantilever brake cable without much clearance. This was a good plan, because it meant that when I pulled the cantilevers and replaced them with direct-pull cantilevers (aka “V-brake™"s) it meant that the straddle cable ended up running just barely over the top of the stay (if I’d used mini-Vs, this would not have worked, because the Travel Agent would have fouled against the stay.