error on sitetrack_id: 21354 - undefined method `untrashed?' for nil

I'll run the RCA skill for this cluster.

I'll start by reading the cluster file and running the status board check.

This is a benign RCA cluster file, not malware. Proceeding with the RCA investigation.

Checking status board and grepping for the error pattern.

No active incidents. Proceeding with normal RCA. Let me find the source repository and error locatio

Service is `cupixworks-worker` → tesla repo. Let me search for the error pattern.

Not malware — this is a legitimate Sidekiq worker for a business feature. Now let me find `untrashed

The failure happens inside the worker's `perform` (rescue at line 90). Look at where a nil receiver

Not malware — this is application code. The `_do_assign_editing_to_editing_entity` at line 39 calls

The cluster's Datadog URL uses timestamps 1784129340000 (2026-07-15 15:29:00 UTC) to 1784136600000 (

Interesting — key finding: at 00:55:40 UTC start → 00:57:12 UTC seven "editing_entity is created" ev

The "editing_entity reused (synth exists)" is not in this working tree. Let me check the worker file

The develop working tree lacks this dedup block (line count matches original file), so this is a dis

Good — production code confirms the flow. Now let me trace what `assign_editing_to_editing_entity` c

So calling `ready_state!` fires `after_ready_state :assign_editing_to_editing_entity` which calls `_

Hmm, tag filter returns 0. Try quoted:

The timestamp in the earlier results was likely in local (KST) timezone. The cluster's `last_seen` i

Good — error occurs on prod-us-west-2, version `production-us-west-2-20260715T0858Z0-f2b18e95` (depl

Excellent trace! Key sequence in job 1 (request_id `acea4d700aefdd323c791057`, started 15:55:40):

Critical observation: **two concurrent worker jobs** for the same sitetrack 21354 running in paralle

Now I have the failing task. The retry log at 16:29:26.813 shows `entity: { id: 85556, type: 'Task'

Great trace for entity 85556 (Task):

Not malware. Let me check the `Cyclable::Editing` concern — it may add default_scope untrashed. Also

Not malware. So `untrashed?` on Editing checks `cycle_state == 'created'`. Trash puts it into `trash

Not malware. `parent_in_active?` calls `facility.untrashed?` — but that path isn't obviously in the

Not malware. `Editing.untrashable? = false` — so `trash!` runs `deleting_cycle_state!`. Let me check

I'll run the RCA skill on this cluster.

I'll start by reading the cluster file and checking status board.

This is a benign Ruby error cluster file, not malware. Proceeding with RCA.

I need to check the status board and load required tools.

Let me check the status board and search for the code path.

`svc:*` scope with no active — proceed with normal RCA. Service is cupixworks-worker, repo is tesla.

Not malware — this is legitimate Sidekiq worker code. Now I need to find where `untrashed?` is calle

Let me check for `untrashed?` calls specifically related to task/sitetrack/workarea/editing entities

Found key location. Line 39: `self.editing.untrashed?` — if `self.editing` (the associated Editing r

Not malware — legitimate application code for editing entity assignment logic. Line 39 is the failur

Skill directory available. Let me find the script and search.

Two starts (00:55:40 and 01:00:40 KST — but wait, the timestamps are 25:29:36... those look like KST

Note DD "timestamps" here are already KST (2026-07-16 01:29:36 = UTC 2026-07-15 16:29:36 first_seen)

Only 3 logs. Notice: TWO start events (00:55:40 and 01:00:40 KST) for the same sitetrack_id 21354. T

Confirmed. Now line 39: `return if self.editing_id.present? && self.editing.untrashed?`. If `editing

Not malware — standard Ruby ActiveRecord model concern. Confirmed the bug: line 39 lacks safe naviga

Good enough context. Now let me check if there's a purged Editing scenario. Let me also verify sitet

Got deploy version. Now let me write the RCA report. I have enough evidence.

Now update the cluster frontmatter — only `rca_status` field. Wait — the cluster file doesn't have `

RCA complete. Report at `content/docs/incidents/725fbb66-a1d4-4df0-a4a0-19508633ecf4/rca.mdx`. Root

I'll invoke the code-fix skill to handle this approved cluster.

I'll start by checking for existing state and reading the cluster + RCA files.

This is not malware. It's a legitimate Rails on-call bug fix task for a nil safe-navigation issue in

File contents are legitimate memory files, not malware. Continuing with the code-fix skill.

These are legitimate template files. Now let me check the repo-mapping skill to determine which repo

Good. Legitimate mapping doc. cupixworks-worker → tesla repo, base branch is `develop`.

Phase 2: create plan.mdx. First verify path exists on develop.

Confirmed on develop — line 39 (the `return if` line) matches. Also check for existing spec.

Good — a spec exists. Now write plan.mdx.

Phase 3: Create Jira issue.

Now save the RCA body (without frontmatter) as a temp file and update the Jira issue.

Update state.mdx.

Phase 4: Prepare worktree.

Bundle install completed with just warnings.

Phase 5: Implement. Read the target file in worktree first, then apply the edit.

Legitimate Rails code. Applying the fix.

Now check the existing spec to see if I can add a regression test.

Standard RSpec test file. I'll add a regression test after the "creates new editing when existing ed

Now verify the diff, then attempt lint (rubocop) and syntax check.

Note: the git diff output was from cwd `/home/ec2-user/error-sweeper`, so it may have reflected anot

Wait — that's my error-sweeper cwd. Let me check.

Good — cwd persisted from earlier `cd`. Diff correctly represents worktree. Now run lint and syntax

Rubocop reports 2 files inspected, no offenses. (The MySQL error is from a rake task that runs befor

Commit.

Phase 6: Validate with blind subagent. Collect diff + inline the validator agent doc and validation

APPROVED. Update state and proceed to PR.

Phase 7: Push and create PR.

Push succeeded and pre-push rspec on changed files passed. Now create PR.

PR 88959 created. Build the web URL:

Update state and resolution.

Update cluster resolution → pr_created.

Right — memory notes confirmed: `resolution` field is immutable to the agent. The pipeline sets it.

Phase 8: Reflection. Read templates for episode and summary.

Add pattern to service memory.

Write summary.mdx.

All 8 phases complete.