Grafana: Compile issues related to pkg/tsdb/mysql and pkg/api

The compilation stops with an error related to pkg/tsdb/mysql/mysql.go:

~/go/src/github.com/grafana/grafana olaf$ go run build.go setup
Version: 4.3.0-pre1, Linux Version: 4.3.0, Package Iteration: 1493673134pre1
go get -v github.com/kardianos/govendor
go install -v ./pkg/cmd/grafana-server
github.com/grafana/grafana/pkg/api
github.com/grafana/grafana/pkg/tsdb/mysql
# github.com/grafana/grafana/pkg/tsdb/mysql
pkg/tsdb/mysql/mysql.go:156: rows.ColumnTypes undefined (type *core.Rows has no field or method ColumnTypes)
pkg/tsdb/mysql/mysql.go:182: undefined: sql.ColumnType
# github.com/grafana/grafana/pkg/api
pkg/api/http_server.go:59: undefined: http.ErrServerClosed
pkg/api/http_server.go:65: undefined: http.ErrServerClosed
pkg/api/http_server.go:90: hs.httpSrv.Shutdown undefined (type *http.Server has no field or method Shutdown)
exit status 2
exit status 1