docker/cli · error

no signers for %s

Error message

no signers for %s

What it means

Error "no signers for %s" thrown in docker/cli.

Source

Thrown at cmd/docker-trust/trust/common.go:100

		return []trustTagRow{}, []client.RoleWithSignatures{}, []data.Role{}, err
	}
	defer clearChangeList(notaryRepo)

	// Retrieve all released signatures, match them, and pretty print them
	allSignedTargets, err := notaryRepo.GetAllTargetMetadataByName(tag)
	if err != nil {
		logrus.Debug(trust.NotaryError(remote, err))
		// print an empty table if we don't have signed targets, but have an initialized notary repo
		if _, ok := err.(client.ErrNoSuchTarget); !ok {
			return []trustTagRow{}, []client.RoleWithSignatures{}, []data.Role{}, fmt.Errorf("no signatures or cannot access %s", remote)
		}
	}
	signatureRows := matchReleasedSignatures(allSignedTargets)

	// get the administrative roles
	adminRolesWithSigs, err := notaryRepo.ListRoles()
	if err != nil {
		return []trustTagRow{}, []client.RoleWithSignatures{}, []data.Role{}, fmt.Errorf("no signers for %s", remote)
	}

	// get delegation roles with the canonical key IDs
	delegationRoles, err := notaryRepo.GetDelegationRoles()
	if err != nil {
		logrus.Debugf("no delegation roles found, or error fetching them for %s: %v", remote, err)
	}

	return signatureRows, adminRolesWithSigs, delegationRoles, nil
}

func formatAdminRole(roleWithSigs client.RoleWithSignatures) string {
	adminKeyList := roleWithSigs.KeyIDs
	sort.Strings(adminKeyList)

	var role string
	switch roleWithSigs.Name {
	case data.CanonicalTargetsRole:

View on GitHub (pinned to e9452d6e78)

When it happens

Trigger: Thrown at cmd/docker-trust/trust/common.go:100 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of docker/cli@e9452d6e78 (2026-08-01). Data as JSON: /data/errors/c144dd414558076a.json. Report an issue: GitHub.