Migrate rustc_hir_analysis to session diagnostic

Part one, lib.rs file

compiler/rustc_hir_analysis/src/errors.rs

@@ -333,3 +333,70 @@ pub(crate) struct TrackCallerOnMain {
     #[label]
     pub annotated: Span,
 }
+
+#[derive(Diagnostic)]
+#[diag(hir_analysis_start_not_track_caller)]
+pub(crate) struct StartTrackCaller {
+    #[primary_span]
+    pub span: Span,
+    #[label]
+    pub start: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(hir_analysis_start_not_async, code = "E0752")]
+pub(crate) struct StartAsync {
+    #[primary_span]
+    #[label]
+    pub span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(hir_analysis_start_function_where, code = "E0647")]
+pub(crate) struct StartFunctionWhere {
+    #[primary_span]
+    #[label]
+    pub span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(hir_analysis_start_function_parameters, code = "E0132")]
+pub(crate) struct StartFunctionParameters {
+    #[primary_span]
+    #[label]
+    pub span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(hir_analysis_main_function_return_type_generic, code = "E0131")]
+pub(crate) struct MainFunctionReturnTypeGeneric {
+    #[primary_span]
+    pub span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(hir_analysis_main_function_async, code = "E0752")]
+pub(crate) struct MainFunctionAsync {
+    #[primary_span]
+    pub span: Span,
+    #[label]
+    pub asyncness: Option<Span>,
+}
+
+#[derive(Diagnostic)]
+#[diag(hir_analysis_main_function_generic_parameters, code = "E0131")]
+pub(crate) struct MainFunctionGenericParameters {
+    #[primary_span]
+    pub span: Span,
+    #[label]
+    pub label_span: Option<Span>,
+}
+
+#[derive(Diagnostic)]
+#[diag(hir_analysis_variadic_function_compatible_convention, code = "E0045")]
+pub(crate) struct VariadicFunctionCompatibleConvention<'a> {
+    #[primary_span]
+    #[label]
+    pub span: Span,
+    pub conventions: &'a str,
+}