Fix identifier Debug regex

Summary:
[rust#135080](rust-lang/rust#135080) changed the Debug format of fat pointers.

https://www.internalfb.com/code/fbsource/[26fa1e076c09b41911751f19072ddacd36439375]/third-party/rust/vendor/tracing-core-0.1.33/src/callsite.rs?lines=179%2C188-189%2C387-391

Reviewed By: muirdm

Differential Revision: D75533524

fbshipit-source-id: 1cb25c8ed8405f271a9d6164760310a22a67a32f

Author: David Tolnay

eden/scm/lib/tracing-runtime-callsite/src/tests.rs

@@ -166,4 +166,14 @@ fn normalize(s: &str) -> String {
 }
 
 static THREAD_LOCK: Lazy<Mutex<()>> = Lazy::new(Default::default);
-static IDENTIFIER_RE: Lazy<Regex> = Lazy::new(|| Regex::new("Identifier\\([^)]*\\)").unwrap());
+static IDENTIFIER_RE: Lazy<Regex> = Lazy::new(|| {
+    // tracing_core::callsite::Identifier is Debug-printed using "Identifier({:p})"
+    // on a dyn Callsite.
+    //
+    // On Rust older than 1.87, it prints as:
+    //   Identifier(0x503000001960)
+    //
+    // and on 1.87+ as:
+    //   Identifier(Pointer { addr: 0x503000001960, metadata: DynMetadata(0x55aa5a3b14c8) })
+    Regex::new(r#"Identifier\((0x[0-9a-f]+|Pointer \{ addr: 0x[0-9a-f]+, metadata: DynMetadata\(0x[0-9a-f]+\) \})\)"#).unwrap()
+});