[squash-before-merge]: Fix tests after rebase

Author: aDotInTheVoid

tests/rustdoc-json/attrs/cold.rs

@@ -1,3 +1,3 @@
-//@ is "$.index[?(@.name=='cold_fn')].attrs" '["#[attr = Cold]"]'
+//@ is "$.index[?(@.name=='cold_fn')].attrs" '[{"other": "#[attr = Cold]"}]'
 #[cold]
 pub fn cold_fn() {}

tests/rustdoc-json/attrs/optimize.rs

@@ -1,13 +1,13 @@
 #![feature(optimize_attribute)]
 
-//@ is "$.index[?(@.name=='speed')].attrs" '["#[attr = Optimize(Speed)]"]'
+//@ is "$.index[?(@.name=='speed')].attrs" '[{"other": "#[attr = Optimize(Speed)]"}]'
 #[optimize(speed)]
 pub fn speed() {}
 
-//@ is "$.index[?(@.name=='size')].attrs" '["#[attr = Optimize(Size)]"]'
+//@ is "$.index[?(@.name=='size')].attrs" '[{"other": "#[attr = Optimize(Size)]"}]'
 #[optimize(size)]
 pub fn size() {}
 
-//@ is "$.index[?(@.name=='none')].attrs" '["#[attr = Optimize(DoNotOptimize)]"]'
+//@ is "$.index[?(@.name=='none')].attrs" '[{"other": "#[attr = Optimize(DoNotOptimize)]"}]'
 #[optimize(none)]
 pub fn none() {}