[Bug] ENOSPC: No space left on device error during file write operation

[asanobm]

Bug Description
This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason:
Error: ENOSPC: no space left on device, write
at appendFileSync (unknown)
at (/$bunfs/root/claude:12:1143)
at AW (/$bunfs/root/claude:11:34882)
at appendFileSync (/$bunfs/root/claude:12:949)
at writeFn (/$bunfs/root/claude:12:4895)
at $ (/$bunfs/root/claude:12:4285)
at write (/$bunfs/root/claude:12:4408)
at P (/$bunfs/root/claude:14:36)
at hg (/$bunfs/root/claude:1121:1991)
at qZR (/$bunfs/root/claude:2967:4003)

Environment Info

• Platform: darwin
• Terminal: WarpTerminal
• Version: 2.1.15
• Feedback ID: 8a8f8a8d-8a37-478f-9ca9-f8d80e60c5bc

Errors

[{"error":"Error: ENOENT: no such file or directory, scandir '/Library/Application Support/ClaudeCode/.claude/skills'\n    at readdirSync (unknown)\n    at <anonymous> (/$bunfs/root/claude:12:1903)\n    at AW (/$bunfs/root/claude:11:34882)\n    at readdirSync (/$bunfs/root/claude:12:1864)\n    at hGR (/$bunfs/root/claude:1482:380)\n    at hGR (/$bunfs/root/claude:1482:1350)\n    at <anonymous> (/$bunfs/root/claude:1482:4440)\n    at <anonymous> (/$bunfs/root/claude:1482:5171)\n    at A (/$bunfs/root/claude:11:7245)\n    at iq8 (/$bunfs/root/claude:4125:4342)\n    at async <anonymous> (/$bunfs/root/claude:5413:2332)","timestamp":"2026-01-25T20:08:16.277Z"},{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/asanobm/.local/share/claude/versions/2.1.15 (expected in multi-process scenarios)\n    at eZR (/$bunfs/root/claude:3243:2091)\n    at cFA (/$bunfs/root/claude:3243:1202)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-25T20:08:16.402Z"},{"error":"Error: LSP server plugin:rust-analyzer-lsp:rust-analyzer crashed with exit code 1\n    at <anonymous> (/$bunfs/root/claude:1552:21456)\n    at emit (node:events:98:22)\n    at #handleOnExit (node:child_process:520:14)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-25T20:08:17.942Z"}]

[github-actions]

Found 3 possible duplicate issues:

1. [BUG] Claude Code crashes with unhandled ENOSPC error when disk space is low #16720
2. [Bug] Disk Space Exhaustion: File Write Failure (ENOSPC) #8575
3. [BUG] ENOSPC: no space left on device error during workflow, despite available disk space #9496

This issue will be automatically closed as a duplicate in 3 days.

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🤖 Generated with Claude Code

[github-actions]

This issue has been automatically closed as a duplicate of #16720.

If this is incorrect, please re-open this issue or create a new one.

🤖 Generated with Claude Code

[github-actions]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.