Revert "Fix rust-analyzer"

This reverts commit 69d5e29.

Author: estebank

src/tools/rust-analyzer/crates/parser/src/lexed_str.rs

@@ -255,9 +255,9 @@ impl<'a> Converter<'a> {
                     return;
                 }
 
-                rustc_lexer::TokenKind::Lifetime { invalid } => {
-                    if *invalid {
-                        errors.push("Lifetime name contains invalid characters".into());
+                rustc_lexer::TokenKind::Lifetime { starts_with_number } => {
+                    if *starts_with_number {
+                        errors.push("Lifetime name cannot start with a number".into());
                     }
                     LIFETIME_IDENT
                 }

src/tools/rust-analyzer/crates/parser/test_data/lexer/err/lifetime_starts_with_a_number.rast

@@ -1,4 +1,4 @@
-LIFETIME_IDENT "'1" error: Lifetime name contains invalid characters
+LIFETIME_IDENT "'1" error: Lifetime name cannot start with a number
 WHITESPACE "\n"
-LIFETIME_IDENT "'1lifetime" error: Lifetime name contains invalid characters
+LIFETIME_IDENT "'1lifetime" error: Lifetime name cannot start with a number
 WHITESPACE "\n"

src/tools/rust-analyzer/crates/parser/test_data/lexer/err/lifetime_starts_with_a_number.txt

@@ -1,4 +1,4 @@
-LIFETIME_IDENT "'1" error: Lifetime name contains invalid characters
+LIFETIME_IDENT "'1" error: Lifetime name cannot start with a number
 WHITESPACE "\n"
-LIFETIME_IDENT "'1lifetime" error: Lifetime name contains invalid characters
+LIFETIME_IDENT "'1lifetime" error: Lifetime name cannot start with a number
 WHITESPACE "\n"

src/tools/rust-analyzer/crates/parser/test_data/lexer/err/unclosed_char_with_ferris.rast

@@ -1 +1 @@
-LIFETIME_IDENT "'🦀" error: Lifetime name contains invalid characters
+CHAR "'🦀" error: Missing trailing `'` symbol to terminate the character literal

src/tools/rust-analyzer/crates/proc-macro-srv/src/token_stream.rs

@@ -302,9 +302,9 @@ impl<S> TokenStream<S> {
                         span: span.derive_ranged(range),
                     }))
                 }
-                rustc_lexer::TokenKind::Lifetime { invalid } => {
-                    if invalid {
-                        return Err(format!("Invalid lifetime identifier: `{}`", &s[range]));
+                rustc_lexer::TokenKind::Lifetime { starts_with_number } => {
+                    if starts_with_number {
+                        return Err("Lifetime cannot start with a number".to_owned());
                     }
                     let range = range.start + 1..range.end;
                     tokenstream.push(TokenTree::Punct(Punct {