v3.1.4

3.1.4 - 2026-06-17

• TAG: v3.1.4
• COVERAGE: 94.33% -- 666/706 lines in 16 files
• BRANCH COVERAGE: 79.11% -- 125/158 branches in 16 files
• 37.08% documented

Fixed

• Prevented parallel test runs from hanging when a worker process exits but its
  stdout or stderr pipe remains open, a failure mode observed on JRuby
  current/head jobs.

• Ensured worker stdout/stderr reader threads are force-stopped after worker
  process exit if an engine keeps them blocked after pipe closure, fixing
  TruffleRuby 25.0 CI failures in the worker pipe cleanup regression spec.

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