diff --git a/bib/pkg/progress/export_test.go b/bib/pkg/progress/export_test.go
index 252d532..ae12d16 100644
--- a/bib/pkg/progress/export_test.go
+++ b/bib/pkg/progress/export_test.go
@@ -25,3 +25,11 @@ func MockIsattyIsTerminal(fn func(uintptr) bool) (restore func()) {
 		isattyIsTerminal = saved
 	}
 }
+
+func MockOsbuildCmd(s string) (restore func()) {
+	saved := osbuildCmd
+	osbuildCmd = s
+	return func() {
+		osbuildCmd = saved
+	}
+}
diff --git a/bib/pkg/progress/progress.go b/bib/pkg/progress/progress.go
index 2112b39..1e1a3a5 100644
--- a/bib/pkg/progress/progress.go
+++ b/bib/pkg/progress/progress.go
@@ -333,6 +333,8 @@ func runOSBuildNoProgress(pb ProgressBar, manifest []byte, store, outputDirector
 	return err
 }
 
+var osbuildCmd = "osbuild"
+
 func runOSBuildWithProgress(pb ProgressBar, manifest []byte, store, outputDirectory string, exports, extraEnv []string) error {
 	rp, wp, err := os.Pipe()
 	if err != nil {
@@ -342,7 +344,7 @@ func runOSBuildWithProgress(pb ProgressBar, manifest []byte, store, outputDirect
 	defer wp.Close()
 
 	cmd := exec.Command(
-		"osbuild",
+		osbuildCmd,
 		"--store", store,
 		"--output-directory", outputDirectory,
 		"--monitor=JSONSeqMonitor",
@@ -353,12 +355,11 @@ func runOSBuildWithProgress(pb ProgressBar, manifest []byte, store, outputDirect
 		cmd.Args = append(cmd.Args, "--export", export)
 	}
 
+	var stdio bytes.Buffer
 	cmd.Env = append(os.Environ(), extraEnv...)
 	cmd.Stdin = bytes.NewBuffer(manifest)
-	cmd.Stderr = os.Stderr
-	// we could use "--json" here and would get the build-result
-	// exported here
-	cmd.Stdout = nil
+	cmd.Stdout = &stdio
+	cmd.Stderr = &stdio
 	cmd.ExtraFiles = []*os.File{wp}
 
 	osbuildStatus := osbuild.NewStatusScanner(rp)
@@ -367,7 +368,6 @@ func runOSBuildWithProgress(pb ProgressBar, manifest []byte, store, outputDirect
 	}
 	wp.Close()
 
-	var tracesMsgs []string
 	for {
 		st, err := osbuildStatus.Status()
 		if err != nil {
@@ -383,13 +383,6 @@ func runOSBuildWithProgress(pb ProgressBar, manifest []byte, store, outputDirect
 			}
 			i++
 		}
-		// keep the messages/traces for better error reporting
-		if st.Message != "" {
-			tracesMsgs = append(tracesMsgs, st.Message)
-		}
-		if st.Trace != "" {
-			tracesMsgs = append(tracesMsgs, st.Trace)
-		}
 		// forward to user
 		if st.Message != "" {
 			pb.SetMessagef(st.Message)
@@ -397,7 +390,7 @@ func runOSBuildWithProgress(pb ProgressBar, manifest []byte, store, outputDirect
 	}
 
 	if err := cmd.Wait(); err != nil {
-		return fmt.Errorf("error running osbuild: %w\nLog:\n%s", err, strings.Join(tracesMsgs, "\n"))
+		return fmt.Errorf("error running osbuild: %w\nOutput:\n%s", err, stdio.String())
 	}
 
 	return nil
diff --git a/bib/pkg/progress/progress_test.go b/bib/pkg/progress/progress_test.go
index 67a720d..31734ec 100644
--- a/bib/pkg/progress/progress_test.go
+++ b/bib/pkg/progress/progress_test.go
@@ -3,6 +3,8 @@ package progress_test
 import (
 	"bytes"
 	"fmt"
+	"os"
+	"path/filepath"
 	"reflect"
 	"testing"
 
@@ -130,3 +132,27 @@ func TestProgressNewAutoselect(t *testing.T) {
 		assert.Equal(t, reflect.TypeOf(pb), reflect.TypeOf(tc.expected), fmt.Sprintf("[%v] %T not the expected %T", tc.onTerm, pb, tc.expected))
 	}
 }
+
+func makeFakeOsbuild(t *testing.T, content string) string {
+	p := filepath.Join(t.TempDir(), "fake-osbuild")
+	err := os.WriteFile(p, []byte("#!/bin/sh\n"+content), 0755)
+	assert.NoError(t, err)
+	return p
+}
+
+func TestRunOSBuildWithProgress(t *testing.T) {
+	restore := progress.MockOsbuildCmd(makeFakeOsbuild(t, `echo osbuild-stdout-output
+>&2 echo osbuild-stderr-output
+exit 112
+`))
+	defer restore()
+
+	pbar, err := progress.New("debug")
+	assert.NoError(t, err)
+	err = progress.RunOSBuild(pbar, []byte(`{"fake":"manifest"}`), "", "", nil, nil)
+	assert.EqualError(t, err, `error running osbuild: exit status 112
+Output:
+osbuild-stdout-output
+osbuild-stderr-output
+`)
+}