diff --git a/src/build/GhosttyDist.zig b/src/build/GhosttyDist.zig
index 3d7ba3b8d..25ec7182b 100644
--- a/src/build/GhosttyDist.zig
+++ b/src/build/GhosttyDist.zig
@@ -115,7 +115,8 @@ pub fn init(b: *std.Build, cfg: *const Config) !GhosttyDist {
         // Capture stderr so it doesn't spew into the parent build.
         // On the flip side, if the test fails we won't know why so
         // that sucks but we should have already ran tests at this point.
-        _ = step.captureStdErr();
+        // NOTE(mitchellh): temporarily disabled to diagnose heisenbug
+        //_ = step.captureStdErr();
 
         break :step step;
     };