Pull minimum_rustc_version into GlobalConfig

src/config.rs

@@ -9,6 +9,10 @@ pub struct GlobalConfig {
     stdout: StandardStream,
     stderr: StandardStream,
     handlebars: handlebars::Handlebars<'static>,
+    /// Minimum rustc version supported.
+    ///
+    /// This will be used to print an error if the user's rustc version is not high enough.
+    minimum_rustc_version: semver::Version,
 }
 
 impl Default for GlobalConfig {
@@ -48,13 +52,18 @@ impl GlobalConfig {
                 }
             })),
             handlebars: make_handlebars_registry(),
+            minimum_rustc_version: semver::Version::new(1, 65, 0),
         }
     }
 
     pub fn handlebars(&self) -> &handlebars::Handlebars<'static> {
         &self.handlebars
     }
 
+    pub fn minimum_rustc_version(&self) -> &semver::Version {
+        &self.minimum_rustc_version
+    }
+
     pub fn set_level(mut self, level: Option<log::Level>) -> Self {
         self.level = level;
         self

src/lib.rs

@@ -321,10 +321,10 @@ impl Check {
         if !(matches!(self.current.source, RustdocSource::Rustdoc(_))
             && matches!(self.baseline.source, RustdocSource::Rustdoc(_)))
         {
-            let rustc_version_needed = rustc_version::Version::new(1, 65, 0);
+            let rustc_version_needed = config.minimum_rustc_version();
             match rustc_version::version() {
                 Ok(rustc_version) => {
-                    if rustc_version < rustc_version_needed {
+                    if rustc_version < *rustc_version_needed {
                         let help = "HELP: to use the latest rustc, run `rustup update stable && cargo +stable semver-checks <args>`";
                         anyhow::bail!("rustc version is not high enough: >={rustc_version_needed} needed, got {rustc_version}\n\n{help}");
                     }