Rename lint-rust-version to hint-msrv

compiler/rustc_errors/src/lib.rs

@@ -367,7 +367,7 @@ struct DiagCtxtInner {
     /// stored along side the main panic backtrace.
     ice_file: Option<PathBuf>,
 
-    /// Controlled by `-Z lint-rust-version`; this allows avoiding emitting lints which would raise MSRV.
+    /// Controlled by `-Z hint-msrv`; this allows avoiding emitting lints which would raise MSRV.
     msrv: Option<RustcVersion>,
 }
 

compiler/rustc_session/src/options.rs

@@ -2400,6 +2400,8 @@ options! {
         "allow deducing higher-ranked outlives assumptions from coroutines when proving auto traits"),
     hint_mostly_unused: bool = (false, parse_bool, [TRACKED],
         "hint that most of this crate will go unused, to minimize work for uncalled functions"),
+    hint_msrv: Option<RustcVersion> = (None, parse_rust_version, [TRACKED],
+        "control the minimum rust version for lints"),
     human_readable_cgu_names: bool = (false, parse_bool, [TRACKED],
         "generate human-readable, predictable names for codegen units (default: no)"),
     identify_regions: bool = (false, parse_bool, [UNTRACKED],
@@ -2468,8 +2470,6 @@ options! {
         "lint LLVM IR (default: no)"),
     lint_mir: bool = (false, parse_bool, [UNTRACKED],
         "lint MIR before and after each transformation"),
-    lint_rust_version: Option<RustcVersion> = (None, parse_rust_version, [TRACKED],
-        "control the minimum rust version for lints"),
     llvm_module_flag: Vec<(String, u32, String)> = (Vec::new(), parse_llvm_module_flag, [TRACKED],
         "a list of module flags to pass to LLVM (space separated)"),
     llvm_plugins: Vec<String> = (Vec::new(), parse_list, [TRACKED],

compiler/rustc_session/src/session.rs

@@ -1040,7 +1040,7 @@ pub fn build_session(
         dcx = dcx.with_ice_file(ice_file);
     }
 
-    if let Some(msrv) = sopts.unstable_opts.lint_rust_version {
+    if let Some(msrv) = sopts.unstable_opts.hint_msrv {
         dcx = dcx.with_msrv(msrv);
     }
 

src/doc/unstable-book/src/compiler-flags/lint-rust-version.md → src/doc/unstable-book/src/compiler-flags/hint-msrv.md

@@ -1,4 +1,4 @@
-# `lint-rust-version`
+# `hint-msrv`
 
 The tracking issue for this feature is: [#157574](https://github.com/rust-lang/rust/issues/157574).