Bump rmeta version to fix rustc_serialize ICE

#91407 changed the serialization format which leads to ICEs for nightly users such as #91663 and linked issue.
Bumping the metadata version should lead to the cached files being discarded instead.

diff --git a/compiler/rustc_metadata/src/rmeta/mod.rs b/compiler/rustc_metadata/src/rmeta/mod.rs
index 4e09d23169aca3c771b86ad12d68c6ec713c32b2..a65b5dade3e560b237ff186b43f8f0a91e21b39b 100644 (file)
--- a/compiler/rustc_metadata/src/rmeta/mod.rs
+++ b/compiler/rustc_metadata/src/rmeta/mod.rs
@@ -48,7 +48,7 @@
 /// Metadata encoding version.
 /// N.B., increment this if you change the format of metadata such that
 /// the rustc version can't be found to compare with `rustc_version()`.
-const METADATA_VERSION: u8 = 5;
+const METADATA_VERSION: u8 = 6;
 
 /// Metadata header which includes `METADATA_VERSION`.
 ///