failure.outcome_duplicate_arm: Outcome match handles a failure twice

Outcome match handles a failure twice.

Area 3, Logic; not declinable; the next step is usually the agent's.

example

function duplicate_failure(key: LookupKey) -> LookupResult {    return match lookup(key) {        success(value) -> value        LookupMissing -> "missing"        LookupMissing -> "missing again"        LookupRefused -> "refused"    }}

text

error: `LookupMissing` is handled twice --> main.jadpo:5:9  |4 |         LookupMissing -> "missing"  |         ------------- first matched here5 |         LookupMissing -> "missing again"  |         ^^^^^^^^^^^^^ matched again  reason: Each failure has one arm; the first takes every `LookupMissing`, so this one never runs.  next: Remove this arm, or merge its body into the first (agent)  rule: failure.outcome_duplicate_arm  help: https://jadpo.dev/docs/errors/failure.outcome_duplicate_armcheck failed: 1 error, 2 files