make download_gt work #286

Job	Run time
build (faiss-ivf, faissconda, random-xs)	8m 55s
build (faiss-t1, random-xs, faissconda)	10m 18s
build (puck-t1, random-xs, puck)	12m 18s
build (faiss-t1, random-range-xs, faissconda)	9m 19s
build (diskann-t2, random-xs, diskann)	5m 23s
build (diskann-t2, random-range-xs, diskann)	5m 37s
build (bbann, random-xs, bbann)	6m 27s
build (bbann, random-range-xs, bbann)	8m 5s
build (httpann_example, random-xs, httpann_example)	5m 58s
build (httpann_example, random-range-xs, httpann_example)	6m 21s
build (kst_ann_t1, random-xs, kst_ann_t1)	13m 20s
build (buddy-t1, random-xs, faissconda)	13m 52s
build (buddy-t1, random-range-xs, faissconda)	13m 4s
build (kota-t2, random-xs, kota)	5m 48s
build (kota-t2, random-range-xs, kota)	5m 19s
build (team11, random-xs, faissconda)	8m 46s
	2h 18m 50s

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