tmp_more_verbose_logs

packer_test/common/plugin.go

@@ -99,19 +99,28 @@ func UseDependency(remoteModule, ref string) BuildCustomisation {
 
 		cmd = exec.Command("go", "mod", "tidy")
 		cmd.Dir = path
+
+		modErr := &strings.Builder{}
+		cmd.Stderr = modErr
+
 		err = cmd.Run()
 		if err != nil {
 			return fmt.Errorf("failed to run go mod tidy: %s", err), nil
 		}
 
+		log.Printf("running go mod tidy before compilation; stderr: %s", modErr.String())
+
 		return nil, func() {
 			err = os.WriteFile(modPath, oldGoMod, stat.Mode())
 			if err != nil {
 				fmt.Fprintf(os.Stderr, "failed to reset modfile %q: %s; manual cleanup may be needed", modPath, err)
 			}
 			cmd := exec.Command("go", "mod", "tidy")
 			cmd.Dir = path
+			modErr := &strings.Builder{}
+			cmd.Stderr = modErr
 			_ = cmd.Run()
+			log.Printf("running go mod tidy after compilation; stderr: %s", modErr.String())
 		}
 	}
 }
@@ -250,22 +259,28 @@ func compilePlugin(ts *PackerTestSuite, versionString string, customisations ...
 		return fmt.Errorf("failed to compile plugin binary: %s", err)
 	}
 
+	log.Printf("setting up compilation context for version %q", versionString)
 	testerPluginDir := filepath.Join(testDir, "plugin_tester")
 	for _, custom := range customisations {
+		log.Printf("applying one customisation")
 		err, cleanup := custom(testerPluginDir)
 		if err != nil {
+			log.Printf("applying customisation failed")
 			return fmt.Errorf("failed to prepare plugin workdir: %s", err)
 		}
 		defer cleanup()
 	}
+	log.Printf("done setting up compilation context for version %q", versionString)
 
 	outBin := filepath.Join(ts.pluginsDirectory, BinaryName(v))
 
+	log.Printf("compiling version %q", versionString)
 	compileCommand := exec.Command("go", "build", "-C", testerPluginDir, "-o", outBin, "-ldflags", LDFlags(v), ".")
 	logs, err := compileCommand.CombinedOutput()
 	if err != nil {
 		return fmt.Errorf("failed to compile plugin binary: %s\ncompiler logs: %s", err, logs)
 	}
+	log.Printf("done compiling version %q to path %q", versionString, outBin)
 
 	ts.compiledPlugins.Store(v.String(), outBin)
 	return nil