Regression in master on double schedule

examples/double_schedule.rs

@@ -0,0 +1,37 @@
+//! examples/double_schedule.rs
+
+#![deny(unsafe_code)]
+#![deny(warnings)]
+#![no_main]
+#![no_std]
+
+use panic_semihosting as _;
+use rtic::cyccnt::U32Ext;
+
+#[rtic::app(device = lm3s6965, monotonic = rtic::cyccnt::CYCCNT)]
+const APP: () = {
+    struct Resources {
+        nothing: (),
+    }
+
+    #[init(spawn = [task1])]
+    fn init(cx: init::Context) -> init::LateResources {
+        // cx.spawn.task1().ok();
+
+        init::LateResources { nothing: () }
+    }
+
+    #[task(schedule = [task2])]
+    fn task1(_cx: task1::Context) {
+        _cx.schedule.task2(_cx.scheduled + 100.cycles()).ok();
+    }
+
+    #[task(schedule = [task1])]
+    fn task2(_cx: task2::Context) {
+        _cx.schedule.task1(_cx.scheduled + 100.cycles()).ok();
+    }
+
+    extern "C" {
+        fn SSI0();
+    }
+};