The test failed on branch=provisional_202007081918_v20.2.0-alpha.2, cloud=gce:
test artifacts and logs in: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/artifacts/jobs/mixed-versions/run_1
	mixed_version_jobs.go:198,versionupgrade.go:167,mixed_version_jobs.go:296,mixed_version_jobs.go:320,test_runner.go:757: Cluster info
		Node 1: 20.1-9
		Node 2: 20.1-9
		Node 3: 20.1-9
		Node 4: 20.1
		
		Unsuccessful job 570797560936464385 of type IMPORT, description IMPORT TABLE tpcc.public."order" (o_id INT8 NOT NULL, o_d_id INT8 NOT NULL, o_w_id INT8 NOT NULL, o_c_id INT8, o_entry_d TIMESTAMP, o_carrier_id INT8, o_ol_cnt INT8, o_all_local INT8, PRIMARY KEY (o_w_id, o_d_id, o_id DESC), CONSTRAINT order_idx UNIQUE (o_w_id, o_d_id, o_c_id, o_id DESC) STORING (o_entry_d, o_carrier_id)) CSV DATA ('workload:///csv/tpcc/order?fks=true&interleaved=false&row-end=1500000&row-start=0&seed=1&version=2.1.0&warehouses=200', 'workload:///csv/tpcc/order?fks=true&interleaved=false&row-end=3000000&row-start=1500000&seed=1&version=2.1.0&warehouses=200', 'workload:///csv/tpcc/order?fks=true&interleaved=false&row-end=4500000&row-start=3000000&seed=1&version=2.1.0&warehouses=200', 'workload:///csv/tpcc/order?fks=true&interleaved=false&row-end=6000000&row-start=4500000&seed=1&version=2.1.0&warehouses=200') WITH "nullif" = 'NULL', status failed, error version mismatch in flow request: 30; this node accepts 27 through 28, coordinator 3
		Unsuccessful job 570797560936726529 of type IMPORT, description IMPORT TABLE tpcc.public.order_line (ol_o_id INT8 NOT NULL, ol_d_id INT8 NOT NULL, ol_w_id INT8 NOT NULL, ol_number INT8 NOT NULL, ol_i_id INT8 NOT NULL, ol_supply_w_id INT8, ol_delivery_d TIMESTAMP, ol_quantity INT8, ol_amount DECIMAL(6,2), ol_dist_info CHAR(24), PRIMARY KEY (ol_w_id, ol_d_id, ol_o_id DESC, ol_number), INDEX order_line_stock_fk_idx (ol_supply_w_id, ol_i_id)) CSV DATA ('workload:///csv/tpcc/order_line?fks=true&interleaved=false&row-end=1500000&row-start=0&seed=1&version=2.1.0&warehouses=200', 'workload:///csv/tpcc/order_line?fks=true&interleaved=false&row-end=3000000&row-start=1500000&seed=1&version=2.1.0&warehouses=200', 'workload:///csv/tpcc/order_line?fks=true&interleaved=false&row-end=4500000&row-start=3000000&seed=1&version=2.1.0&warehouses=200', 'workload:///csv/tpcc/order_line?fks=true&interleaved=false&row-end=6000000&row-start=4500000&seed=1&version=2.1.0&warehouses=200') WITH "nullif" = 'NULL', status failed, error version mismatch in flow request: 30; this node accepts 27 through 28, coordinator 3
		Unsuccessful job 570797560938430465 of type IMPORT, description IMPORT TABLE tpcc.public.history (rowid UUID NOT NULL DEFAULT gen_random_uuid(), h_c_id INT8 NOT NULL, h_c_d_id INT8 NOT NULL, h_c_w_id INT8 NOT NULL, h_d_id INT8 NOT NULL, h_w_id INT8 NOT NULL, h_date TIMESTAMP, h_amount DECIMAL(6,2), h_data VARCHAR(24), PRIMARY KEY (h_w_id, rowid), INDEX history_customer_fk_idx (h_c_w_id, h_c_d_id, h_c_id), INDEX history_district_fk_idx (h_w_id, h_d_id)) CSV DATA ('workload:///csv/tpcc/history?fks=true&interleaved=false&row-end=1500000&row-start=0&seed=1&version=2.1.0&warehouses=200', 'workload:///csv/tpcc/history?fks=true&interleaved=false&row-end=3000000&row-start=1500000&seed=1&version=2.1.0&warehouses=200', 'workload:///csv/tpcc/history?fks=true&interleaved=false&row-end=4500000&row-start=3000000&seed=1&version=2.1.0&warehouses=200', 'workload:///csv/tpcc/history?fks=true&interleaved=false&row-end=6000000&row-start=4500000&seed=1&version=2.1.0&warehouses=200') WITH "nullif" = 'NULL', status failed, error version mismatch in flow request: 30; this node accepts 27 through 28, coordinator 3