The test failed on branch=provisional_202003181957_v20.1.0-beta.3, cloud=gce:
test artifacts and logs in: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/artifacts/20200319-1816942/schemachange/invertedindex/run_1
	cluster.go:2368,inverted_index.go:104,inverted_index.go:27,test_runner.go:753: error with attached stack trace:
		    main.(*monitor).WaitE
		    	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/cluster.go:2356
		    main.(*monitor).Wait
		    	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/cluster.go:2364
		    main.runSchemaChangeInvertedIndex
		    	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/inverted_index.go:104
		    main.registerSchemaChangeInvertedIndex.func1
		    	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/inverted_index.go:27
		    main.(*testRunner).runTest.func2
		    	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/test_runner.go:753
		    runtime.goexit
		    	/usr/local/go/src/runtime/asm_amd64.s:1357
		  - monitor failure:
		  - error with attached stack trace:
		    main.(*monitor).wait.func3
		    	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/cluster.go:2416
		    main.(*monitor).wait.func4
		    	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/cluster.go:2445
		    runtime.goexit
		    	/usr/local/go/src/runtime/asm_amd64.s:1357
		  - monitor command failure:
		  - signal: interrupt

	cluster.go:2050,cluster.go:2069,cluster.go:2173,cluster.go:1470,context.go:135,cluster.go:1467,test_runner.go:821: context canceled