Docker Build Crashes — Mount Callback Failed with Docker 29.4.1 and Containerd 2.2.3

What this error means

mount callback failed (or failed to remove mount temp dir) with docker 29.4.1, containerd 2.2.3 is a Docker failure pattern reported for developers trying to fix docker build mount callback failed error with containerd 2.2.3 on aws ec2. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

Official moby/moby issue #52607 (2026-05-11) reports Docker build consistently crashes with ‘mount callback failed’ on AWS EC2 c5 instances using Docker 29.4.1 + containerd 2.2.3. Triggered by large layer builds from nvidia/cuda base images.

Common causes

• Developers building Docker images with large layers (e.g., nvidia/cuda base images) on AWS EC2 instances experience consistent build crashes due to containerd mount failures. Critical for ML/AI workloads depending on GPU base images.
• Official moby/moby issue #52607 (2026-05-11) reports Docker build consistently crashes with ‘mount callback failed’ on AWS EC2 c5 instances using Docker 29.4.1 + containerd 2.2.3. Triggered by large layer builds from nvidia/cuda base images.

Quick fixes

1. Confirm the exact error signature matches mount callback failed (or failed to remove mount temp dir) with docker 29.4.1, containerd 2.2.3.
2. Check the Docker account, local tool state, and provider configuration involved in the failing workflow.
3. Compare the failing environment with a known working setup, then change one configuration value at a time.

Platform/tool-specific checks

• Verify the command, editor, extension, or API client that produced the error.
• Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
• Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

1. Capture the exact error message and the command, editor action, or request that triggered it.
2. Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
3. Review the source evidence below and compare it with your environment.
4. Apply one change at a time and rerun the smallest failing action.
5. Keep the working fix documented for the team or deployment environment.

How to prevent it

• Keep provider/tool configuration documented.
• Record non-secret diagnostics such as tool version, provider name, model name, and command path.
• Add a lightweight check before CI or production workflows depend on the tool.

Sources checked

• https://github.com/moby/moby/issues/52607

Evidence note: Official moby/moby issue #52607 (2026-05-11) reports Docker build consistently crashes with ‘mount callback failed’ on AWS EC2 c5 instances using Docker 29.4.1 + containerd 2.2.3. Triggered by large layer builds from nvidia/cuda base images.

Related errors

• Docker containerd mount failure on AWS EC2
• Docker build fails with large layers

FAQ

What should I check first?

Start with the exact mount callback failed (or failed to remove mount temp dir) with docker 29.4.1, containerd 2.2.3 text and the smallest action that reproduces it.

Can I ignore this error?

No. Treat it as a failed Docker workflow until the root cause is understood.

Is this guaranteed to have one fix?

No. The imported evidence supports the troubleshooting path above, but tool behavior can vary by account, plan, version, provider, and local configuration.

How do I know the fix worked?

Rerun the same command, editor action, or request. The fix is working when that action completes without mount callback failed (or failed to remove mount temp dir) with docker 29.4.1, containerd 2.2.3.