From 24895f2a248b6de055d68dac6c6bdfe62cb85fa1 Mon Sep 17 00:00:00 2001
From: south-mer <161788436+south-mer@users.noreply.github.com>
Date: Wed, 14 May 2025 20:38:07 +0900
Subject: [PATCH] Fix no child processes error (#2048)

---
 pkg/errors/command.go        | 15 +++++++++++++++
 pkg/module/go_get_fetcher.go |  2 +-
 pkg/module/go_vcs_lister.go  |  2 +-
 3 files changed, 17 insertions(+), 2 deletions(-)
 create mode 100644 pkg/errors/command.go

diff --git a/pkg/errors/command.go b/pkg/errors/command.go
new file mode 100644
index 00000000..8afd06db
--- /dev/null
+++ b/pkg/errors/command.go
@@ -0,0 +1,15 @@
+package errors
+
+import "strings"
+
+// IsNoChildProcessesErr returns true for an error from
+// exec.Command().Run() that can be safely ignored.
+// Reference: https://github.com/slimtoolkit/slim/blob/79b63a80c10083ece51be0ef1fd1e7c090ff6346/pkg/util/errutil/errutil.go#L95-L110
+func IsNoChildProcessesErr(err error) bool {
+	if err == nil {
+		return false
+	}
+
+	return strings.Contains(err.Error(), "wait: no child processes") ||
+		strings.Contains(err.Error(), "waitid: no child processes")
+}
diff --git a/pkg/module/go_get_fetcher.go b/pkg/module/go_get_fetcher.go
index c9e59d29..2668caae 100644
--- a/pkg/module/go_get_fetcher.go
+++ b/pkg/module/go_get_fetcher.go
@@ -143,7 +143,7 @@ func downloadModule(
 	cmd.Stderr = stderr
 
 	err := cmd.Run()
-	if err != nil {
+	if err != nil && !errors.IsNoChildProcessesErr(err) {
 		err = fmt.Errorf("%w: %s", err, stderr)
 		var m goModule
 		if jsonErr := json.NewDecoder(stdout).Decode(&m); jsonErr != nil {
diff --git a/pkg/module/go_vcs_lister.go b/pkg/module/go_vcs_lister.go
index b9e3f041..82a5f454 100644
--- a/pkg/module/go_vcs_lister.go
+++ b/pkg/module/go_vcs_lister.go
@@ -81,7 +81,7 @@ func (l *vcsLister) List(ctx context.Context, module string) (*storage.RevInfo,
 		cmd.Env = prepareEnv(gopath, l.env)
 
 		err = cmd.Run()
-		if err != nil {
+		if err != nil && !errors.IsNoChildProcessesErr(err) {
 			err = fmt.Errorf("%w: %s", err, stderr)
 			if errors.IsErr(timeoutCtx.Err(), context.DeadlineExceeded) {
 				return nil, errors.E(op, err, errors.KindGatewayTimeout)