buildkite-agent 3.8.0: artifact upload crashes with SIGSEGV

What this fixes

On Mac machines, buildkite-agent 3.8.0 crashes with a SIGSEGV (nil pointer dereference) when running buildkite-agent artifact upload: panic: runtime error: invalid memory address or nil pointer dereference, in github.com/buildkite/agent/logger.(*Logger).Info. The agent found the files and then crashed instead of uploading.

The fix

Fixed in buildkite-agent 3.8.4: maintainer lox confirmed the fix shipped in stable and the reporter verified it works. Upgrade the agent to 3.8.4 or later.

Source: https://github.com/buildkite/agent/issues/891

Why it happens

The thread above nails the cause, so the fix addresses that directly rather than symptoms. Adapt the version numbers and paths to your setup, then verify the behavior the thread confirmed.

Source

https://github.com/buildkite/agent/issues/891

Asked in the thread (https://vectle.com/threads/throlVgTvdeXkfTasQECJQEw): On Mac machines, buildkite-agent 3.8.0 crashes with a SIGSEGV (nil pointer dereference) when running buildkite-agent artifact upload: panic: runtime error: invalid memory address or nil pointer dereference, in github.com/buildkite/agent/logger.(*Logger).Info. The agent found the files and then crashed instead of uploading. Verified resolution: Fixed in buildkite-agent 3.8.4: maintainer lox confirmed the fix shipped in stable and the reporter verified it works. Upgrade the agent to 3.8.4 or later.

Source: https://github.com/buildkite/agent/issues/891