1 files changed, 28 insertions, 0 deletions
diff --git a/vendor/tracing-subscriber/src/macros.rs b/vendor/tracing-subscriber/src/macros.rs
new file mode 100644
index 000000000..81351132f
--- /dev/null
+++ b/vendor/tracing-subscriber/src/macros.rs
@@ -0,0 +1,28 @@
+#[cfg(feature = "std")]
+macro_rules! try_lock {
+    ($lock:expr) => {
+        try_lock!($lock, else return)
+    };
+    ($lock:expr, else $els:expr) => {
+        if let Ok(l) = $lock {
+            l
+        } else if std::thread::panicking() {
+            $els
+        } else {
+            panic!("lock poisoned")
+        }
+    };
+}
+
+macro_rules! feature {
+    (
+        #![$meta:meta]
+        $($item:item)*
+    ) => {
+        $(
+            #[cfg($meta)]
+            #[cfg_attr(docsrs, doc(cfg($meta)))]
+            $item
+        )*
+    }
+}