(don't merge) Try to reproduce ractor failure

wks · wks · commit b992938fa332 · 2025-05-30T13:01:57.000+08:00
See if the following failure is reproducible. GitHub: https://github.com/ruby/mmtk/actions/runs/15337982573/job/43158736092?pr=36
diff --git a/PLACEHOLDER.txt b/PLACEHOLDER.txt
@@ -0,0 +1 @@
+Just to test if the failure in https://github.com/ruby/mmtk/actions/runs/15337982573/job/43158736092?pr=36 is reproducible.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+Just to test if the failure in https://github.com/ruby/mmtk/actions/runs/15337982573/job/43158736092?pr=36 is reproducible.`