PaperClipAI/doc/run-log-events.md

Run-Log Events

Run-log events write to the heartbeat_run_events table (packages/db/src/schema/heartbeat_run_events.ts:6-20). They are not Paperclip Telemetry events, and they are not OpenTelemetry exports. A run-log event needs no operator endpoint.

Provider-pack preparation timing

The existing run.performance.span event also records provider_pack.select, provider_pack.discover, provider_pack.verify, provider_pack.verify_preinstalled, provider_pack.link_preinstalled, provider_pack.clear_stale, provider_pack.upload, and provider_pack.verify_uploaded. Selection records stateSource as staged, preinstalled, or uploaded. Its closed reason is verified_pack_reused or cached_packs_unverified. A verification failure describes an unusable candidate; it does not identify a particular compatibility mismatch or a failed run. Harness startup also records harness_state.inspect, harness_state.path_check, and harness_state.launch_material for remote state inspection and fresh launch material. These events retain the existing schema and carry no paths or exception strings. They also become native Observability spans only with an operator OTLP endpoint.

Native PRP Run-Log Events

auth.credentials.updated is a runner-produced PRP event for a change to a supported credential store, including account identity changes and later token refreshes on the new account. The bundled transport awaits a host commit callback before acknowledging delivery, including during warm idle and provider cleanup. The callback writes directly to the bound run through the shared run-log writer. Its separate credential source namespace avoids collisions with driver-normalized source sequences and deduplicates retries using the original PRP event identity. The original envelope is retained in prpEvent. Its payload contains only a provider, an opaque binding ID, a revision, and a detection method. It contains no credentials, account identity, file path, or credential fingerprint. The consumer can use the event to read the updated credentials through its existing private credential channel. This run-log event stays in the instance database.

native.recovery.execution_reclaimed records an atomic same-run recovery claim that restores a released task execution binding. The claim locks the task, coordinator, and original run in that order. It preserves the assignee and checks current execution/checkout owners, other live work, dependencies, pause holds, and stop/successor records before restoring the binding. Attachment authorization keeps its existing requirement for that exact binding. Skipped retry candidates wait 30 seconds before recheck so they cannot fill every bounded claim batch. Undated retries sort first. A failed candidate cannot discard earlier committed claims. Queued waiters do not block the original execution owner from recovery; they still wait for that owner to settle before normal queue promotion. This is local run-log data.

Fresh remote Codex model substitution emits runner.model_fallback on the system stream with warn severity. Its payload contains requestedModel, effectiveModel, and codexCliVersion. It records a preparation choice before provider launch, not a failed turn or a retry. The same substitution appears as a system warning in the task conversation. It remains local run-log data.

The hidden native coordinator writes each validated PRP event to the bound run's existing event stream before it acknowledges the runner. The row keeps the PRP eventType, source instance, source event ID, source sequence, protocol schema version, and a SHA-256 digest of the canonical stored envelope. Its payload is { "prpEvent": <canonical PRP event> }.

Native API tool events omit HTTP request and response bodies from durable history. This includes serialized provider contentItems, legacy HTTP receipts and call_api arguments. Saved receipts retain the operation and call IDs, success flag, HTTP status and content type when present. The body becomes ***REDACTED***, with apiPayloadRedacted: true and apiPayloadSha256, a SHA-256 digest of the original payload. These digests distinguish duplicate events from changed payloads; they cannot recover omitted bodies for debugging or replay. The model receives the original authorized response. Credential-bearing mutation receipts use encrypted storage separately from this run log.

Checkpoints and completion records apply the same redaction. Completion retries compare stored and expected payloads through the control-plane port's idempotent normalizeReplayPayload projection, so a saved redacted result can be confirmed without restoring API bodies. Ports without a projection compare their original payloads. Repeated redaction preserves the original digest and detects changed private payloads.

The native runtime passes this projection through backend recovery to the Codex driver. Recovery compares saved semantic results and turn fingerprints with provider history through the same representation. A private body change retains its distinct digest and fails recovery; an unchanged body does not require restoring its plaintext into the checkpoint.

PostgreSQL JSONB cannot represent NUL (U+0000), which can occur in command output such as Vite virtual-module paths. The run-event payload column uses a lossless storage codec for these events: the JSONB projection renders NUL as the literal \u0000, and the reserved $paperclipRunEventJsonV1 field contains the original serialized JSON as a doubly escaped string. Ordinary payloads retain their existing representation. Drizzle reads restore the exact stored payload before replay, hash validation, redaction, or API presentation. SQL queries can still inspect ordinary routing fields in the projection; raw SQL readers of the whole payload must apply decodeRunEventPayload. The column remains JSONB and requires no schema migration.

The writer locks the native heartbeat_runs row and allocates the existing per-run seq cursor. A byte-equivalent retry reuses the first row; a changed retry or source-sequence gap is rejected. Company, issue, agent, run, session, and runner-source bindings must match the persisted native run. Bootstrap tickets, reconnect leases, authentication proofs, encryption keys, and raw credential material are never written to the run log.

These records remain run-log events. They do not create an OpenTelemetry or Paperclip Telemetry export, and legacy adapters do not use this writer.

Semantic Settlement Diagnostics and Retry Logs

Before interrupting a Codex turn, the runner durably records a harness.diagnostic event with code provider_interrupt_requested, the stop reason, provider turn ID, and pending tool call IDs. A harmless identical result replay records semantic_tool_result_duplicate with warning severity, call ID, operation ID, and result digest. It does not fail the task or create a user attention request. A true conflict includes the call and operation IDs and both result digests in its error; full arguments belong to the canonical semantic input record, not the error message.

Incomplete close emits the bounded native_session_settlement_incomplete runner diagnostic. Its evidence includes runner suspension, provider drain, final provider state, pending call/operation/source-event IDs and input digests, and incomplete result-delivery command IDs and statuses. If execution and cleanup both fail, execution retains its original error identity and cleanup is attached as cleanupError.

Semantic settlement also includes up to 20 content-free failure records, with the call ID, operation ID, stage (dispatch or persist_result), and cause. Causes distinguish an oversized command, a full command journal, known storage errors, dispatcher rejection, and other persistence failures. Exception messages and tool results are excluded. These diagnostics do not authorize replay of an operation whose outcome is unknown.

Instruction writes also commit an agent.instruction_write_attempted activity row and a run-scoped instructionToolAttempts entry before permitting the filesystem effect. They retain the call ID, operation ID, and input digest, not instruction text. A later transaction rollback cannot erase this attempt proof. A missing success or definite pre-write failure receipt means the outcome is unknown, even if the current file contains the requested text. Known validation and stale-base failures are saved under the attempt's failure entry and replay their original status, message, and details without a new write. Unknown outcomes remain blocked until reconciled; a committed receipt with a lost acknowledgement can replay its exact result.

The NDJSON output log appends across repeated begin calls for one run. Each new handle adds an attemptId to its lines. If the local file is absent and a durable S3 mirror exists, begin restores that prefix before appending. A failed restore must not replace the mirror with an empty or partial attempt. Publishing a restored prefix uses an atomic create-if-absent operation, so a concurrent restore cannot overwrite lines another attempt has already appended. Earlier attempts therefore remain available for incident diagnosis. Existing records without attemptId remain readable.

These records use the instance run log and its configured storage. They add no Paperclip Telemetry or OpenTelemetry export.

Omitted Unsafe Workspace Export

workspace_export_omitted is an informational system event in the local run log. Its payload is { "reason": "restore_unsafe_archive" }, with "legacy": true when recovering an unsafe failure from an older controller. It records that native finalization discarded an unsafe export and continued with the accepted result. It contains no archive names, link targets, or raw error details. It does not create a task warning, recovery action, Telemetry event, or OpenTelemetry export.

Native Restart Recovery Run-Log Event

Paperclip writes a native.recovery.transition event for every native restart classification and for graceful restart suspension. This immutable run-log record lets operators reconstruct recovery decisions without exporting data to Paperclip Telemetry or OpenTelemetry.

The payload contains the restart kind, recovery request id when one exists, runner disposition, and the controller generation and provider attempt for a claimed recovery. Live-runner adoption also records the runner PID, process group, and process-start fingerprint. A non-claim disposition records a bounded reason instead. Graceful suspension records the signal and confirms that it did not create a retry run.

The event never includes bootstrap tickets, reconnect leases, authentication proofs, encryption keys, environment variables, provider credentials, command arguments, or an unsanitized stderr stream. Detailed failed-attempt diagnostics remain in the bounded native_run_finalizations.recovery_history ledger.

native.remote_runner_recovery_failed records the closed stage and reason when remote identity verification fails, including admission failures before the execution coordinator opens. Unavailable probes are retried within a shared 30-second deadline; identity conflicts are not retried. The event distinguishes an unreadable identity from a confirmed missing process and contains no command output or credentials. Saved-state read failures use state_read_failed; malformed saved JSON uses state_invalid. It does not itself authorize replacement or cleanup.

For a prepared remote workspace interrupted before its first executor claim, that ledger records remote_execution_never_claimed with a bootstrap_incomplete disposition. The provider attempt remains zero during classification; the executor increments it before starting provider work.

For a local Codex turn lost while runnerd was stopped, the canonical turn.failed event retains error.code: "provider_turn_lost_on_restore" and error.recoverable: true. It records the interrupted turn, not a final task outcome. There is no synthesized result for that interruption. An admitted same-session continuation emits its own turn.submitted, accepted turn ID, and terminal events; only the final outcome closes the run. Reconstructed thread history retains the original error so reconciliation and live delivery agree.

Native Local Process Stop Evidence

The server writes native.local_process_stopped in the same transaction that clears a local run's process identity, after it verifies that its PID and process group are absent. The payload contains only those process IDs. Remote process IDs are never checked against the control-plane host.

The server writes native.process_start_requested before a backend can spawn, and native.process_identity_recorded when it stores a new native process identity. Either invalidates an earlier local stop receipt, including a crash before the new PID callback. Continuation admission accepts only the latest server-authored event among these three types; provider source events cannot supply stop authority. These records stay in the local run log and do not add Telemetry or OpenTelemetry data.

Verified Local Codex Replacement Evidence

The server writes native.stopped_text_turn_verified in the same transaction that schedules a fresh successor for a stopped local Codex run. It records the runner and provider process identities, retained-state digests, provider thread and turn IDs, and IDs of exactly receipted task-completion calls. The server first checks the complete turn inventory, process-stop receipt, and execution binding. Unknown actions or changed retained state prevent this event and replacement.

The record documents why the old execution can be retired. It does not make the old session resumable, rewrite provider files, or authorize replay on its own. It remains in the local run log and adds no Telemetry or OpenTelemetry export.

Sandbox Startup Run-Log Event

Paperclip writes one run.startup.step event to the run log for each bring-up step. This event is a run-log record, not a first-party telemetry event. The generated telemetry contract does not cover it, so this section is its canonical contract.

The event payload carries only three fields.

Field	Type	Meaning
step	string	The bring-up step name, for example stage.sync.
durationMs	number	The wall time of the step. A skipped step reports 0.
outcome	string	The step outcome (ok, skipped, or failed).

The event no longer carries the per-step round-trip count or the provider duration fields. It dropped roundTrips, providerExecMs, providerGetMs, createRuntimeMs, and ensureSessionMs. The startup spans in doc/observability.md carry that detail now. The sandbox.exec child spans hold the round-trip and provider durations. The acp.handshake step span holds the create-runtime and ensure-session sub-times.

To read the detailed timing, use the startup spans. The spans need an OTLP endpoint. A run with no endpoint keeps only the three run-log fields above.

Run Phase Timing Run-Log Event

Paperclip writes one run.phase.timing event to the run log for each run-lifecycle phase. This event is a run-log record, not a first-party telemetry event. The generated telemetry contract does not cover it, so this section is its canonical contract. The producer is emitRunPhaseTiming in packages/adapter-utils/src/acpx-engine/startup-timing.ts.

The event payload carries only three fields.

Field	Type	Meaning
phase	string	The run-lifecycle phase name from the closed allowlist below.
durationMs	number	The wall time of the phase. A negative or a non-finite value clamps to 0.
outcome	string	The phase outcome (ok or failed).

The phase field is one member of a closed, low-cardinality allowlist. The producer drops any event whose phase name is outside this allowlist, so a free-form label never reaches the run log. The allowlist has twelve phase names.

Phase	Meaning
place_workspace	Place the run workspace.
start_transport	Start the agent transport.
create_runtime	Create the agent runtime.
ensure_session	Ensure the agent session exists.
configure_session	Configure the agent session.
prepare_turn	Prepare the turn.
turn	Run the turn.
end_session	End the agent session.
settle_reuse	Settle the session for reuse.
stop_transport	Stop the agent transport.
sync_back	Sync the workspace back.
release_staging_lease	Release the staging lease.

The payload never carries a command, an argument, a path, an environment value, or a raw identifier. The event rides the ctx.onEvent run-event bridge and is run-log-only. It needs no OTLP endpoint.

Workspace Restore and Settled Run Measurements

The heartbeat controller writes these records with eventType: "lifecycle", stream: "system", and level: "info". The event name below is its message and its payload's phase. They remain in the instance run log and add no Paperclip Telemetry or OpenTelemetry export.

Event	Payload fields besides phase	Meaning
workspace_checkpoint	mode, scannedEntries, changedFiles, payloadBytes	Metrics for a validated sparse checkpoint, or a full restore fallback.
workspace.restore	durationMs	Wall time around native workspace restoration.
task.run.measured	durationMs, outcome, durableSettlement	Wall time through terminal owner cleanup, with the persisted terminal run status and durableSettlement: true.

For workspace_checkpoint, mode is "sparse" or "full". Sparse metrics count snapshot entries in scannedEntries, regular files in the validated downloaded payload in changedFiles, and their total bytes in payloadBytes. Deleted entries and symlinks do not add to the regular-file count or byte total. Full fallback reports all three counts as null: unavailable, not zero. A run can emit multiple checkpoint records while restoring its repositories. These payloads contain no paths, filenames, file contents, or credentials.

workspace.restore is emitted when the timed restoration exits, including an exception. It has no outcome field and does not by itself prove restore success. Its producer is the native workspace sync onPhase callback.

task.run.measured is emitted only after the controller observes a terminal run with no remaining native runner ownership. Its duration starts at startedAt, or createdAt if the run never started, and includes preparation, execution, finalization, and cleanup. It is not model-only time; the creation-time fallback also includes time spent queued. outcome is the actual terminal status, such as succeeded, failed, or cancelled. Provider turn completion can precede this settlement record. The record does not imply exactly-once emission across controller recovery, and failure to write it is logged without changing the already-settled outcome.

System notices and final replies

Automatic comments with a stored system_notice presentation, including workspace-ready notices, remain available as progress information. They do not occupy the run's final reply slot. Final response selection still preserves ordinary explicit agent comments and excludes receipt-bound generated progress.

ACP terminal failure diagnostics

The shared ACP adapter engine preserves typed terminal session failures in the run error, the acpx.error transcript record, and heartbeat_runs.result_json.terminalSessionFailure. The structured diagnostic contains the provider category, title, and details. It works when raw provider tracing is disabled. The existing UI and CLI render the diagnostic as an error, not as assistant output or an automatic task response. Issue continuation summaries and session-compaction handoffs retain only the generic failure category; provider diagnostic prose is not copied into prompts.

Both pinned ACPX patches pass complete title and detail strings to the in-memory callback. The engine redacts configured environment values (including resolved secrets with arbitrary variable names), launch environment values outside a closed allowlist of public process settings, known boolean flags, and run identifiers, connection URL passwords, the run API key, and common credential forms before truncation. It removes control characters, retains line breaks for JSON and stack traces, and preserves up to 4,096 title characters and 24,576 detail characters. These bounds also keep the escaped transcript JSON below the server's 64 KiB chunk limit. Longer fields end with an explicit omission count and appear in truncatedFields. The error message includes the same sanitized text. Ordinary run retrieval preserves the bounded structured diagnostic even when multibyte text or other result fields exceed the result byte budget. In that reduced response, title and details have 1 KiB and 8 KiB byte budgets, including truncation markers. retrievalTruncated directs callers to the full adapter-bounded text in the run error or transcript. Other provider metadata and action payloads are not copied.

Recovery still uses the typed failure category and the adapter's existing classifier. Provider warnings do not become failures, and timeouts or lost control channels keep their authoritative failure messages. These diagnostics stay in the instance's run records and configured run-log storage. They add no Paperclip Telemetry or OpenTelemetry export.

Related instrumentation

The sandbox duplex transport also writes one run-log event as one of its three sinks. See the Sandbox Duplex Transport Instrumentation section in the Observability contract.

Execution recovery

Cancelled runs retain resultJson.cancellation: a closed source label (operator, queued_message, shutdown, provider, transport, control_plane, controller_lease, or unknown), whether the stop was expected, the initiator, reason, and recording time. Recorded stop intent survives adapter completion. controller_lease means the host stopped its own legacy adapter after it lost the durable controller lease; the reason names a closed cause (renewal_rejected, renewal_deadline, or renewal_error). A lease lost during run setup (for example a rejected renewal while preparing the workspace) settles the run failed with error code controller_lease_lost, the same controller_lease cancellation evidence, and executionRecovery.providerWorkStarted: false. Recovery retries it as transient infrastructure instead of blocking on setup_failed. A setup-phase error after provider dispatch began keeps setup_failed, so started work is never retried. The local lifecycle event includes this evidence. Started cancellations without an expected stop are also reported to Sentry; its cancellation diagnostics contain only source, expectedness, initiator type, and the closed lease-loss cause, never initiator IDs or reason text. A lease loss also records resultJson.controllerLeaseLoss, including a loss during setup that fails the run before adapter dispatch. It holds the closed cause and the watchdog timings in milliseconds: sinceRenewalMs (since the last successful renewal), renewalPendingMs (age of a renewal query still in flight, or null), deadlineLateMs (how late the deadline callback ran, for renewal_deadline only), and renewalCount. A long renewalPendingMs points at a stalled database query; a long deadlineLateMs points at a blocked event loop. Failure reports carry these bounded numbers and the cause label only. Historical ambiguous cancellations stay unknown and do not authorize replay.

Provider tool-definition validation failures use provider_tool_definition_invalid / configuration. Automatic retry and continuation recovery stop until the configuration is repaired. Classification uses raw provider diagnostics in memory before redaction; stored diagnostics remain redacted and bounded.

Provider identity diagnostics remain in the local run log. They record the notification method, expected and received thread/turn identifiers, and the classification (root, verified descendant, stale, unrelated informational, or invalid authoritative). They omit the original provider payload and credentials. Repeated informational notices are bounded.

Ignored unrelated Codex notifications use harness.diagnostic with code codex_unrelated_information. The payload retains only the bounded provider method and expected/received thread and turn identifiers. Account updates, skill changes, and unrelated thread information do not create a provider notice in chat. Chat also omits the matching notice stored by older runners. Real provider warnings and errors remain visible.

Recovery lifecycle events retain the original structured failure code, retry attempt, next retry time, and predecessor/successor identifiers. Durable status delivery uses an idempotency marker; delivery grants no provider authority. Failed publication is retried without repeating provider work. These records are not first-party Telemetry.

An unstarted legacy conversation retry waiting for execution cleanup retains resultJson.executionWait with the issue, blocking run, and execution_owner_active cause. A local lifecycle event records the wait and the unchanged scheduled retry attempt once per blocking run. Repeated scheduler checks update the same retry row without repeating that event. Promotion removes this ownership-wait marker after cleanup; other execution holds retain their existing dispatch gates.

If execution-continuation setup finds that a task no longer exists, is closed, or its owner changed, the existing cancellation settlement records continuation_task_ownership_changed. The run and wake request become cancelled before adapter dispatch, with the run-log message stale execution continuation cancelled before dispatch. Immediate recovery is suppressed. Missing source context, authorization failures, and other setup errors retain their failure classification. An untyped error with the same message is also still a failure; cancellation requires the typed ownership guard.

Bounded retry exhaustion writes one lifecycle receipt per run, retry reason, scheduled attempt, and retry limit. Repeated or concurrent recovery checks reuse that receipt, including receipts from earlier builds, without advancing the event sequence or publishing another live event. Attention reads select the latest matching receipt in PostgreSQL and project only the run's issue/task identifiers from its context, so historical duplicate receipts cannot multiply run contexts in server memory. Existing duplicate events do not require deletion or migration.

Workspace restore failures

Legacy adapter results can carry workspaceRestoreFailure with the code restore_permission_denied, restore_lock_timeout, restore_unsafe_archive, or restore_failed. The heartbeat records workspace_restore_failed and keeps the run failed and the workspace-finalization barrier closed. Available output, usage, session metadata, and the previous execution outcome survive settlement. executionBeforeRestore retains the earlier error code, exit code, signal, and timeout flag. The ordinary redacted error field retains an earlier error message.

The chat reports the restore phase separately from a missing final response. A saved-plan link requires a stored document and its run-bound revision or a matching run-bound review record. Older unclassified failures use neutral wording. Diagnostics show only a validated relative member path, never an archive link target or host path.

An unsafe archive or an outbound confinement refusal keeps the existing execution recovery hold, including across conversation resets. It cannot start another model turn until an operator uses the existing recovery action to record executionReconciliation with workspaceRepairEvidence (20–12000 characters). This evidence must describe verified safe staging or repair for the referenced failed run. It does not grant plan approval. Saved comments, document revisions, and confirmation IDs and states stay unchanged. Recovery uses the existing delivery identity and links the successor to the original failed run. Repair does not reset the automatic retry budget. Transient failures retain the existing bounded retry policy. Archive confinement remains required.

Sandbox restore tasks also write a Workspace restore diagnostic line to the run log on failure. phase is workspace or asset, so a failed staged-asset copy-back (such as credentials) can be distinguished from workspace restoration. The line contains only an allowlisted OS/transport errorCode (otherwise unknown), an optional numeric HTTP error status, and an optional bounded process exit code. Up to four nested causes are inspected. Messages, URLs, filesystem paths, asset names, credentials, and response bodies are excluded. Every failed outbound task emits its own diagnostic; nested repository failures are logged once by the enclosing workspace task. The original error and restore safety policy are unchanged. These lines stay in the instance run log and its configured durable storage, and are not new first-party telemetry events.

Native sandbox environmentSyncOut errors preserve allowlisted error codes and bounded HTTP/exit statuses across worker RPC for this diagnostic line. The host revalidates the envelope and keeps the original failure and recovery policy. Provider messages, paths, response bodies, credentials, and arbitrary error data are not copied into the new envelope. Older workers can still report unknown.

The optional step identifies the failed restore operation. For phase=workspace and step=git_integration, gitCommand identifies one fixed command family (rev_parse, symbolic_ref, merge_base, merge_tree, commit_tree, update_ref, or log). gitFailureKind is merge_conflict, invalid_object, ref_conflict, permission_denied, or unknown; it is a bounded diagnostic clue, not a new recovery or retry decision. Only supported exit/OS codes and recognized Git messages produce a specific classification. No command arguments, stderr, filenames, repository URLs, or ref names are saved. The same closed fields persist in workspaceRestoreDiagnostic and are revalidated before projection into an enabled Sentry failure report.

Codex resume usage snapshot

The native runner retains a bounded local harness.diagnostic event with code codex_resume_usage_snapshot. It identifies thread/tokenUsage/updated as resume_usage_snapshot, retains the reported thread and completed-turn IDs, and records cumulative usage counters. It does not include provider credentials or message content. The event establishes the accounting baseline; it is not a new billable usage receipt or a user-facing provider warning. Other provider identity checks remain in force.

AI subscription contention

A fresh task execution cannot enter this wait. A run that already entered this wait writes an informational lifecycle event to the local run log. Its payload contains only retryScheduled, a boolean that reports whether the scheduler created a retry. The message distinguishes an automatic retry from work that is no longer eligible. This pre-provider wait records ai_connection_busy on the cancelled run and does not consume the provider-failure retry allowance. The event contains no credentials and creates no Telemetry or OpenTelemetry export.

Managed Agent File Save Receipts

The server writes instruction_save after managed file collection or a warm turn checkpoint. The payload includes the save state, instruction entry path, storage warning, and error code/message. Agent-directory receipts identify contract: "agent_files" and the applied candidate hash. Legacy instruction receipts instead identify the saved revision.

A validated warm checkpoint reports saved or unchanged, even though its working directory remains owned by the live session. An unstable checkpoint reports pending_collection until stopped collection produces a final receipt. Successful checkpoints can include checkpointStats: scannedEntries, hashedBytes, copiedFiles, and copiedBytes. These counts describe that capture, not cumulative traffic or an atomic snapshot of background writers. They contain no file contents. The receipt remains in the instance run log; it adds no Paperclip Telemetry or OpenTelemetry export.

If instruction-copy release throws, instruction_cleanup records a warning with payload { "state": "deferred" }. The existing working-copy recovery sweep retries cleanup. This event preserves the run outcome and does not claim a file save; instruction_save remains authoritative for collection. The event contains no raw exception, host path, file contents, or lock-owner metadata. Failure to write the warning must not replace the provider outcome or stop lease release.