rustc (1.51.0+dfsg1-1~exp2) UNRELEASED; urgency=medium
* Drop patch fixed upstream.
+ * Fix bootstrap with self version.
-- Ximin Luo <infinity0@debian.org> Thu, 15 Apr 2021 16:43:50 +0100
--- /dev/null
+--- a/src/bootstrap/builder.rs
++++ b/src/bootstrap/builder.rs
+@@ -1490,7 +1490,7 @@
+ for el in stack.iter().rev() {
+ out += &format!("\t{:?}\n", el);
+ }
+- panic!(out);
++ panic!("{}", out);
+ }
+ if let Some(out) = self.cache.get(&step) {
+ self.verbose(&format!("{}c {:?}", " ".repeat(stack.len()), step));