E160717 06:28:28.001279 internal/client/txn.go:364  failure aborting transaction: does not exist; abort caused by: does not exist
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x140 pc=0xb685a0]

goroutine 3094076 [running]:
panic(0x18ba060, 0xc82000e100)
        /usr/local/go/src/runtime/panic.go:481 +0x3e6
github.com/cockroachdb/cockroach/internal/client.(*Txn).sendEndTxnReq(0x0, 0xc830067400, 0x0, 0x0, 0x0)
        /go/src/github.com/cockroachdb/cockroach/internal/client/txn.go:440 +0x50
github.com/cockroachdb/cockroach/internal/client.(*Txn).Rollback(0x0, 0x0, 0x0)
        /go/src/github.com/cockroachdb/cockroach/internal/client/txn.go:433 +0x3b
github.com/cockroachdb/cockroach/internal/client.(*Txn).CleanupOnError(0x0, 0x7f09906bda70, 0xc835e66ba0)
        /go/src/github.com/cockroachdb/cockroach/internal/client/txn.go:363 +0x92
github.com/cockroachdb/cockroach/sql.(*Executor).execRequest(0xc8201a3860, 0x7f099136cac8, 0xc823552780, 0xc82351d000, 0xc820a519cb, 0x27, 0x0, 0x0, 0x0, 0xc820a51900)
        /go/src/github.com/cockroachdb/cockroach/sql/executor.go:502 +0xd07
github.com/cockroachdb/cockroach/sql.(*Executor).ExecuteStatements(0xc8201a3860, 0x7f099136cac8, 0xc823552780, 0xc82351d000, 0xc820a519cb, 0x27, 0x0, 0x0, 0x0, 0x0, ...)
        /go/src/github.com/cockroachdb/cockroach/sql/executor.go:361 +0xf6
github.com/cockroachdb/cockroach/sql/pgwire.(*v3Conn).executeStatements(0xc826b4c000, 0x7f099136cac8, 0xc823552780, 0xc820a519cb, 0x27, 0x0, 0x0, 0x0, 0x0, 0x7f09913b7201, ...)
        /go/src/github.com/cockroachdb/cockroach/sql/pgwire/v3.go:640 +0x98
github.com/cockroachdb/cockroach/sql/pgwire.(*v3Conn).handleSimpleQuery(0xc826b4c000, 0x7f099136cac8, 0xc823552780, 0xc826b4c028, 0x0, 0x0)
        /go/src/github.com/cockroachdb/cockroach/sql/pgwire/v3.go:320 +0xe8
github.com/cockroachdb/cockroach/sql/pgwire.(*v3Conn).serve(0xc826b4c000, 0xc820d190e0, 0x0, 0x0)
        /go/src/github.com/cockroachdb/cockroach/sql/pgwire/v3.go:275 +0x100c
github.com/cockroachdb/cockroach/sql/pgwire.(*Server).ServeConn(0xc820389a70, 0x7f09913711b0, 0xc8202de000, 0x0, 0x0)
        /go/src/github.com/cockroachdb/cockroach/sql/pgwire/server.go:229 +0x98f
github.com/cockroachdb/cockroach/server.(*Server).Start.func8.1(0x7f09913bc9b0, 0xc820584210)
        /go/src/github.com/cockroachdb/cockroach/server/server.go:370 +0x42
github.com/cockroachdb/cockroach/util/netutil.(*Server).ServeWith.func1(0xc8200d02b0, 0x7f09913bc9b0, 0xc820584210, 0xc82034e010)
        /go/src/github.com/cockroachdb/cockroach/util/netutil/net.go:131 +0x62
created by github.com/cockroachdb/cockroach/util/netutil.(*Server).ServeWith
        /go/src/github.com/cockroachdb/cockroach/util/netutil/net.go:133 +0x333