{"id":"5384009ac9428855","repo":"docker/cli","slug":"cannot-merge-volumes-w","errorCode":null,"errorMessage":"cannot merge volumes: %w","messagePattern":"cannot merge volumes: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"cli/compose/loader/merge.go","lineNumber":39,"sourceCode":"\nfunc (s *specials) Transformer(t reflect.Type) func(dst, src reflect.Value) error {\n\tif fn, ok := s.m[t]; ok {\n\t\treturn fn\n\t}\n\treturn nil\n}\n\nfunc merge(configs []*types.Config) (*types.Config, error) {\n\tbase := configs[0]\n\tfor _, override := range configs[1:] {\n\t\tvar errs []error\n\t\tif services, err := mergeServices(base.Services, override.Services); err != nil {\n\t\t\terrs = append(errs, fmt.Errorf(\"cannot merge services: %w\", err))\n\t\t} else {\n\t\t\tbase.Services = services\n\t\t}\n\t\tif err := mergo.Map(&base.Volumes, &override.Volumes, mergo.WithOverride); err != nil {\n\t\t\terrs = append(errs, fmt.Errorf(\"cannot merge volumes: %w\", err))\n\t\t}\n\t\tif err := mergo.Map(&base.Networks, &override.Networks, mergo.WithOverride); err != nil {\n\t\t\terrs = append(errs, fmt.Errorf(\"cannot merge networks: %w\", err))\n\t\t}\n\t\tif err := mergo.Map(&base.Secrets, &override.Secrets, mergo.WithOverride); err != nil {\n\t\t\terrs = append(errs, fmt.Errorf(\"cannot merge secrets: %w\", err))\n\t\t}\n\t\tif err := mergo.Map(&base.Configs, &override.Configs, mergo.WithOverride); err != nil {\n\t\t\terrs = append(errs, fmt.Errorf(\"cannot merge configs: %w\", err))\n\t\t}\n\t\tif err := errors.Join(errs...); err != nil {\n\t\t\treturn nil, errors.Join(fmt.Errorf(\"failed to merge file %s\", override.Filename), err)\n\t\t}\n\t}\n\treturn base, nil\n}\n\nfunc mergeServices(base, override []types.ServiceConfig) ([]types.ServiceConfig, error) {","sourceCodeStart":21,"sourceCodeEnd":57,"githubUrl":"https://github.com/docker/cli/blob/e9452d6e785f6e365712b9d71bd7517591773c86/cli/compose/loader/merge.go#L21-L57","documentation":"Error \"cannot merge volumes: %w\" thrown in docker/cli.","triggerScenarios":"Thrown at cli/compose/loader/merge.go:39 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"analyzedSha":"e9452d6e785f6e365712b9d71bd7517591773c86","analyzedAt":"2026-08-01T07:09:22.474Z","schemaVersion":2}