Downgrade ra-ap-rustc_parse_format

Author: lnicola

Cargo.lock

@@ -90,7 +90,7 @@ vfs = { path = "./crates/vfs", version = "0.0.0" }
 edition = { path = "./crates/edition", version = "0.0.0" }
 
 ra-ap-rustc_lexer = { version = "0.122", default-features = false }
-ra-ap-rustc_parse_format = { version = "0.122", default-features = false }
+ra-ap-rustc_parse_format = { version = "0.121", default-features = false }
 ra-ap-rustc_index = { version = "0.122", default-features = false }
 ra-ap-rustc_abi = { version = "0.122", default-features = false }
 ra-ap-rustc_pattern_analysis = { version = "0.122", default-features = false }