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-rw-r--r--compiler/rustc_middle/src/middle/debugger_visualizer.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_middle/src/middle/debugger_visualizer.rs b/compiler/rustc_middle/src/middle/debugger_visualizer.rs
index a0497d805da..74a5dfb0400 100644
--- a/compiler/rustc_middle/src/middle/debugger_visualizer.rs
+++ b/compiler/rustc_middle/src/middle/debugger_visualizer.rs
@@ -1,4 +1,5 @@
 use rustc_data_structures::sync::Lrc;
+use rustc_macros::{Decodable, Encodable, HashStable};
 use std::path::PathBuf;
 
 #[derive(HashStable)]