update logrus

Author: rdallman

go.mod

@@ -26,7 +26,7 @@ require (
 	github.com/openzipkin/zipkin-go v0.1.3
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 	github.com/prometheus/client_golang v0.9.2
-	github.com/sirupsen/logrus v1.3.0
+	github.com/sirupsen/logrus v1.4.1
 	github.com/ugorji/go/codec v0.0.0-20181022190402-e5e69e061d4f // indirect
 	go.opencensus.io v0.19.0
 	golang.org/x/net v0.0.0-20181217023233-e147a9138326

go.sum

@@ -103,7 +103,6 @@ func (c *myCall) SlotHashId() string                   { return "" }
 func (c *myCall) Extensions() map[string]string        { return nil }
 func (c *myCall) RequestBody() io.ReadCloser           { return nil }
 func (c *myCall) ResponseWriter() http.ResponseWriter  { return nil }
-func (c *myCall) StdErr() io.ReadWriteCloser           { return nil }
 func (c *myCall) Model() *models.Call                  { return nil }
 func (c *myCall) GetUserExecutionTime() *time.Duration { return nil }
 func (c *myCall) AddUserExecutionTime(time.Duration)   {}