1 files changed, 8 insertions, 2 deletions
diff --git a/compiler/rustc_errors/src/json.rs b/compiler/rustc_errors/src/json.rs
index ddffa64f222..d57beb1148a 100644
--- a/compiler/rustc_errors/src/json.rs
+++ b/compiler/rustc_errors/src/json.rs
@@ -145,10 +145,11 @@ impl Emitter for JsonEmitter {
                 }
             })
             .collect();
+        let report = FutureIncompatReport { future_incompat_report: data };
         let result = if self.pretty {
-            writeln!(&mut self.dst, "{}", as_pretty_json(&data))
+            writeln!(&mut self.dst, "{}", as_pretty_json(&report))
         } else {
-            writeln!(&mut self.dst, "{}", as_json(&data))
+            writeln!(&mut self.dst, "{}", as_json(&report))
         }
         .and_then(|_| self.dst.flush());
         if let Err(e) = result {
@@ -254,6 +255,11 @@ struct FutureBreakageItem {
     diagnostic: Diagnostic,
 }
 
+#[derive(Encodable)]
+struct FutureIncompatReport {
+    future_incompat_report: Vec<FutureBreakageItem>,
+}
+
 impl Diagnostic {
     fn from_errors_diagnostic(diag: &crate::Diagnostic, je: &JsonEmitter) -> Diagnostic {
         let sugg = diag.suggestions.iter().map(|sugg| Diagnostic {