Things mostly work, just a strange hang when executing code with forking executor

tests/unit_scheduler.cpp

@@ -0,0 +1,23 @@
+#include <iostream>
+#include <filesystem>
+
+#include "daggy/executors/ForkingExecutor.hpp"
+#include "daggy/Scheduler.hpp"
+
+#include "catch.hpp"
+
+TEST_CASE("Basic Scheduler Execution", "[scheduler]") {
+  daggy::executor::ForkingExecutor ex;
+  daggy::Scheduler sched(ex);
+
+  std::vector<daggy::Task> tasks {
+    daggy::Task{ "task_a", { "/usr/bin/echo", "task_a"}, 3, 30, { "task_c"} }
+     , daggy::Task{ "task_b", { "/usr/bin/echo", "task_b"}, 3, 30, { "task_c" } }
+     , daggy::Task{ "task_c", { "/usr/bin/echo", "task_c"}, 3, 30, {} }
+  };
+
+  SECTION("Simple Run") {
+    sched.scheduleDAG("Simple", tasks, {});
+    sched.drain();
+  }
+}