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-rw-r--r--src/tools/miri/miri-script/src/main.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/tools/miri/miri-script/src/main.rs b/src/tools/miri/miri-script/src/main.rs
index a80fed8fcb6..279bdf8cc3f 100644
--- a/src/tools/miri/miri-script/src/main.rs
+++ b/src/tools/miri/miri-script/src/main.rs
@@ -111,6 +111,7 @@ pub enum Command {
     /// `rustup-toolchain-install-master` must be installed for this to work.
     Toolchain {
         /// Flags that are passed through to `rustup-toolchain-install-master`.
+        #[arg(trailing_var_arg = true, allow_hyphen_values = true)]
         flags: Vec<String>,
     },
     /// Pull and merge Miri changes from the rustc repo.