{"record":{"id":"56527b450b45ad15","repo":"vxcontrol/pentagi","slug":"failed-to-inspect-list-exec-for-s-w","errorCode":null,"errorMessage":"failed to inspect list exec for '%s': %w","messagePattern":"failed to inspect list exec for '(.+?)': %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"backend/pkg/docker/client.go","lineNumber":1008,"sourceCode":"\t\tAttachStderr: true,\n\t})\n\tif err != nil {\n\t\treturn ContainerDirListing{}, fmt.Errorf(\"failed to create list exec for '%s': %w\", dirPath, err)\n\t}\n\n\tresp, err := dc.ContainerExecAttach(ctx, createResp.ID, client.ExecAttachOptions{})\n\tif err != nil {\n\t\treturn ContainerDirListing{}, fmt.Errorf(\"failed to attach list exec for '%s': %w\", dirPath, err)\n\t}\n\toutput, readErr := demuxExecStdout(resp.Reader, maxListStdoutBytes)\n\tresp.Close()\n\tif readErr != nil {\n\t\treturn ContainerDirListing{}, fmt.Errorf(\"failed to read list output for '%s': %w\", dirPath, readErr)\n\t}\n\n\tinspect, err := dc.ContainerExecInspect(ctx, createResp.ID)\n\tif err != nil {\n\t\treturn ContainerDirListing{}, fmt.Errorf(\"failed to inspect list exec for '%s': %w\", dirPath, err)\n\t}\n\tif inspect.ExitCode != 0 {\n\t\treturn ContainerDirListing{}, fmt.Errorf(\"list command failed for '%s' with exit code %d: %s\", dirPath, inspect.ExitCode, string(output))\n\t}\n\n\tentryPaths, truncated := parseFindEntries(output)\n\n\tstats, failures := statContainerEntries(ctx, entryPaths, containerListWorkers, func(ctx context.Context, entryPath string) (container.PathStat, error) {\n\t\treturn dc.ContainerStatPath(ctx, containerID, entryPath)\n\t})\n\n\t// A cancelled context is a directory-level fault (the client is gone), not a\n\t// partial listing, so surface it as an error. Entries that individually failed\n\t// to stat are carried in Failures — the find exec already proved the container\n\t// alive, so a live directory degrades rather than 500s even if every entry failed.\n\tif err := ctx.Err(); err != nil {\n\t\treturn ContainerDirListing{}, fmt.Errorf(\"listing container directory '%s': %w\", dirPath, err)\n\t}","sourceCodeStart":990,"sourceCodeEnd":1026,"githubUrl":"https://github.com/vxcontrol/pentagi/blob/ea665308baaff015b226f308438a68d929d0f29b/backend/pkg/docker/client.go#L990-L1026","documentation":"After reading the exec output, ListContainerDir calls ContainerExecInspect to learn the exec's exit code. This error wraps a failure of that inspect call — the exec's status could not be retrieved. Note this is the API call failing, not the `find` command failing (that is errorIndex 284).","triggerScenarios":"ContainerExecInspect(ctx, createResp.ID) errors because the exec record was garbage-collected/removed, the container was removed (Docker purges execs with the container), or the daemon connection failed.","commonSituations":"Container removed immediately after its command finished (short-lived containers, auto-remove flag); daemon restart; remote daemon connectivity loss between attach and inspect.","solutions":["Re-run the listing on a container that stays alive for the duration of the call","Avoid `--rm`/auto-removal racing the inspect by keeping the container running until results are consumed","Check daemon connectivity and retry on transient errors","Verify the exec ID is valid — do not reuse exec IDs across calls"],"exampleFix":null,"handlingStrategy":"retry","validationCode":null,"typeGuard":null,"tryCatchPattern":"listing, err := client.ListContainerDir(ctx, containerID, dir)\nif err != nil && strings.Contains(err.Error(), \"failed to inspect list exec\") {\n    // exec record vanished: retry on a container guaranteed to persist\n    listing, err = client.ListContainerDir(ctx, containerID, dir)\n}","preventionTips":["Don't use --rm/auto-remove for containers being introspected","Keep the container alive until all exec results are consumed","Avoid daemon restarts during operations; serialize maintenance","Retry transient inspect failures with backoff"],"tags":["docker","exec","inspect"],"backgroundTag":"docker-exec-inspect-failed","analyzedSha":"ea665308baaff015b226f308438a68d929d0f29b","analyzedAt":"2026-09-01T14:16:31.421Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}