for _, cs := range q.candidates {
				sw.Error(cs.err)
			}
		}
		// Only switch if we need a newer toolchain.
		// Otherwise leave the cs.err for reporting later.
		if sw.NeedSwitch() {
			sw.Switch(ctx)
			// If NeedSwitch is true and Switch returns, Switch has failed to locate a newer toolchain.
			// It printed the errors along with one more about not finding a good toolchain.
			base.Exit()
		}