Merge pull request #12529 from hmac/ruby-extractor-bump-rust-version

Ruby: Bump rust toolchain to 1.68

ruby/doc/HOWTO.md

@@ -7,7 +7,7 @@ This document contains information about common development tasks.
 [Install Rust](https://www.rust-lang.org/tools/install), then run:
 
 ```bash
-cargo build --release
+(cd extractor && cargo build --release)
 ```
 
 ## Generating the database schema and QL library
@@ -16,7 +16,7 @@ The generated `ql/lib/ruby.dbscheme` and `ql/lib/codeql/ruby/ast/internal/TreeSi
 
 ```bash
 # Run the generator
-cargo run --release -p ruby-generator -- --dbscheme ql/lib/ruby.dbscheme --library ql/lib/codeql/ruby/ast/internal/TreeSitter.qll
+(cd extractor && cargo run --release --bin generator -- --dbscheme ../ql/lib/ruby.dbscheme --library ../ql/lib/codeql/ruby/ast/internal/TreeSitter.qll)
 # Then auto-format the QL library
 codeql query format -i ql/lib/codeql/ruby/ast/internal/TreeSitter.qll
 ```

ruby/extractor/rust-toolchain.toml

@@ -2,6 +2,6 @@
 # extractor. It is set to the lowest version of Rust we want to support.
 
 [toolchain]
-channel = "1.54"
+channel = "1.68"
 profile = "minimal"
 components = [ "rustfmt" ]

ruby/extractor/src/bin/extractor.rs

@@ -320,6 +320,8 @@ fn scan_erb(
     (result, line_breaks)
 }
 
+/// Advance `index` to the next non-whitespace character.
+/// Newlines are **not** considered whitespace.
 fn skip_space(content: &[u8], index: usize) -> usize {
     let mut index = index;
     while index < content.len() {