Adds panic stacktraces inside the logs (#202)

Author: tonyredondo

init.go

@@ -11,6 +11,7 @@ import (
 	"testing"
 
 	"go.undefinedlabs.com/scopeagent/agent"
+	"go.undefinedlabs.com/scopeagent/errors"
 	"go.undefinedlabs.com/scopeagent/instrumentation"
 	"go.undefinedlabs.com/scopeagent/instrumentation/logging"
 	scopetesting "go.undefinedlabs.com/scopeagent/instrumentation/testing"
@@ -52,11 +53,11 @@ func Run(m *testing.M, opts ...agent.Option) int {
 		os.Exit(1)
 	}()
 	reflection.AddPanicHandler(func(e interface{}) {
-		instrumentation.Logger().Printf("Panic handler triggered by: %v,\nFlushing agent, sending partial results...", e)
+		instrumentation.Logger().Printf("Panic handler triggered by: %v.\nFlushing agent, sending partial results...", errors.GetCurrentError(e).ErrorStack())
 		newAgent.Flush()
 	})
 	reflection.AddOnPanicExitHandler(func(e interface{}) {
-		instrumentation.Logger().Printf("Process is going to end by: %v,\nStopping agent...", e)
+		instrumentation.Logger().Printf("Process is going to end by: %v,\nStopping agent...", errors.GetCurrentError(e).ErrorStack())
 		scopetesting.PanicAllRunningTests(e, 3)
 		newAgent.Stop()
 	})