diff --git a/cmd/govulncheck_sandbox/govulncheck_sandbox.go b/cmd/govulncheck_sandbox/govulncheck_sandbox.go
index dc54ab7..94c252d 100644
--- a/cmd/govulncheck_sandbox/govulncheck_sandbox.go
+++ b/cmd/govulncheck_sandbox/govulncheck_sandbox.go
@@ -80,12 +80,12 @@
 	govulncheckCmd.Dir = dir
 	govulncheckCmd.Env = append(govulncheckCmd.Environ(), "GOVULNDB=file://"+vulnDBDir)
 	start := time.Now()
-	output, err := govulncheckCmd.Output()
+	output, err := govulncheckCmd.CombinedOutput()
 	if err != nil {
 		// Temporary check because govulncheck currently exits code 3 if any vulns
 		// are found but no other errors occurred.
 		if e := (&exec.ExitError{}); !errors.As(err, &e) || e.ProcessState.ExitCode() != 3 {
-			return nil, err
+			return nil, fmt.Errorf("govulncheck error: err=%v out=%s", err, output)
 		}
 	}
 	response := govulncheck.SandboxResponse{}
diff --git a/cmd/govulncheck_sandbox/govulncheck_sandbox_test.go b/cmd/govulncheck_sandbox/govulncheck_sandbox_test.go
index 469b0f2..486b79c 100644
--- a/cmd/govulncheck_sandbox/govulncheck_sandbox_test.go
+++ b/cmd/govulncheck_sandbox/govulncheck_sandbox_test.go
@@ -71,7 +71,6 @@
 		if resp.Stats.ScanMemory <= 0 {
 			t.Errorf("got %d; want >0 scan memory", resp.Stats.ScanMemory)
 		}
-
 	})
 
 	t.Run("binary", func(t *testing.T) {
@@ -107,7 +106,7 @@
 			name:   "no vulndb",
 			args:   []string{govulncheckPath, worker.ModeGovulncheck, "testdata/module"},
 			vulndb: "does not exist",
-			want:   "exit status 1",
+			want:   "does not exist",
 		},
 		{
 			name:   "no mode",