use rustdocflags instead of rustflags

Author: syphar

src/docbuilder/rustwide_builder.rs

@@ -986,11 +986,11 @@ impl RustwideBuilder {
             // this is how we can reach it from outside the container.
             fs::create_dir_all(build.host_target_dir().join("metrics/"))?;
 
-            let rustflags = toml::Value::try_from(vec![flag])
+            let rustdocflags = toml::Value::try_from(vec![flag])
                 .expect("serializing a string should never fail")
                 .to_string();
             cargo_args.push("--config".into());
-            cargo_args.push(format!("build.rustflags={rustflags}"));
+            cargo_args.push(format!("build.rustdocflags={rustdocflags}"));
         }
 
         Ok(command.args(&cargo_args))