temporalio/temporal · error

expected delimiter ':' not found in version string %s

Error message

expected delimiter ':' not found in version string %s

What it means

Error "expected delimiter ':' not found in version string %s" thrown in temporalio/temporal.

Source

Thrown at common/worker_versioning/worker_versioning.go:1285

	if len(before) == 0 {
		return nil, fmt.Errorf("deployment name is empty in version string %s", s)
	}
	if len(after) == 0 {
		return nil, fmt.Errorf("build id is empty in version string %s", s)
	}
	return &deploymentspb.WorkerDeploymentVersion{
		DeploymentName: before,
		BuildId:        after,
	}, nil
}

func WorkerDeploymentVersionFromStringV32(s string) (*deploymentspb.WorkerDeploymentVersion, error) {
	if s == UnversionedVersionId {
		return nil, nil
	}
	before, after, found := strings.Cut(s, WorkerDeploymentVersionDelimiter)
	if !found {
		return nil, fmt.Errorf("expected delimiter '%s' not found in version string %s", WorkerDeploymentVersionDelimiter, s)
	}
	if len(before) == 0 {
		return nil, fmt.Errorf("deployment name is empty in version string %s", s)
	}
	if len(after) == 0 {
		return nil, fmt.Errorf("build id is empty in version string %s", s)
	}
	return &deploymentspb.WorkerDeploymentVersion{
		DeploymentName: before,
		BuildId:        after,
	}, nil
}

// CleanupOldDeletedVersions removes versions deleted more than 7 days ago. Also removes more deleted versions if
// the limit is being exceeded. Never removes undeleted versions.
// Deprecated. Versions now are deleted serially without using the deleted flag in versionData.
// TODO: remove this cleanup logic after next major release.
func CleanupOldDeletedVersions(deploymentData *persistencespb.WorkerDeploymentData, maxVersions int) bool {

View on GitHub (pinned to bde624efd1)

When it happens

Trigger: Thrown at common/worker_versioning/worker_versioning.go:1285 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of temporalio/temporal@bde624efd1 (2026-09-01). Data as JSON: /api/errors/4d60171ff79957f9. Report an issue: GitHub.