Track rustc-guide on toolstate

src/ci/docker/x86_64-gnu-tools/checktools.sh

@@ -88,6 +88,7 @@ status_check() {
     # these tools are not required for beta to successfully branch
     check_dispatch $1 nightly miri src/tools/miri
     check_dispatch $1 nightly embedded-book src/doc/embedded-book
+    check_dispatch $1 nightly rustc-guide src/doc/rustc-guide
 }
 
 # If this PR is intended to update one of these tools, do not let the build pass

src/tools/publish_toolstate.py

@@ -28,6 +28,7 @@ MAINTAINERS = {
         '@ryankurte @thejpster @therealprof'
     ),
     'edition-guide': '@ehuss @Centril @steveklabnik',
+    'rustc-guide': '@mark-i-m'
 }
 
 REPOS = {
@@ -41,6 +42,7 @@ REPOS = {
     'rust-by-example': 'https://github.com/rust-lang/rust-by-example',
     'embedded-book': 'https://github.com/rust-embedded/book',
     'edition-guide': 'https://github.com/rust-lang-nursery/edition-guide',
+    'rustc-guide': 'https://github.com/rust-lang/rustc-guide',
 }