buildkite
diff --git a/‎src/buildkite_test_collector/collector/run_env.py‎
Lines changed: 5 additions & 1 deletion b/‎src/buildkite_test_collector/collector/run_env.py‎
Lines changed: 5 additions & 1 deletion
diff --git a/‎tests/buildkite_test_collector/collector/test_run_env.py‎
Lines changed: 12 additions & 0 deletions b/‎tests/buildkite_test_collector/collector/test_run_env.py‎
Lines changed: 12 additions & 0 deletions
@@ -74,10 +74,14 @@ def _github_actions_env(self) -> Optional['RunEnv']:
         repo = self._get_env("GITHUB_REPOSITORY")
         run_id = self._get_env("GITHUB_RUN_ID")
 
+        url = None
+        if repo is not None and run_id is not None:
+            url = f"https://github.com/{repo}/actions/runs/{run_id}"
+
         return RunEnv(
             ci="github_actions",
             key=f"{action}-{run_number}-{run_attempt}",
-            url=f"https://github.com/{repo}/actions/runs/{run_id}",
+            url=url,
             branch=self._get_env("GITHUB_REF"),
             commit_sha=self._get_env("GITHUB_SHA"),
             number=run_number,
 
@@ -56,6 +56,18 @@ def test_detect_env_with_github_actions_env_vars_returns_the_correct_environment
     assert run_env.job_id is None
     assert run_env.message == "excellent adventure"
 
+def test_detect_env_with_github_actions_missing_repository_or_run_id_omits_url():
+    run_env = RunEnvBuilder({
+        "GITHUB_ACTION": "bring-about-world-peace",
+        "GITHUB_RUN_NUMBER": "42",
+        "GITHUB_RUN_ATTEMPT": "1",
+    }).build()
+
+    assert run_env.ci == "github_actions"
+    assert run_env.url is None
+    assert "url" not in run_env.as_json()
+
+
 def test_detect_env_with_circle_ci_env_vars_returns_the_correct_environment():
     build_num = str(randint(0, 1000))
     workflow_id = str(uuid4())