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-rw-r--r--tests/run-make/rustdoc-error-lines/rmake.rs4
1 files changed, 1 insertions, 3 deletions
diff --git a/tests/run-make/rustdoc-error-lines/rmake.rs b/tests/run-make/rustdoc-error-lines/rmake.rs
index db6e28e4feb..ea5ec2faed9 100644
--- a/tests/run-make/rustdoc-error-lines/rmake.rs
+++ b/tests/run-make/rustdoc-error-lines/rmake.rs
@@ -4,9 +4,7 @@
 use run_make_support::rustdoc;
 
 fn main() {
-    let output =
-        String::from_utf8(rustdoc().input("input.rs").arg("--test").command_output().stdout)
-            .unwrap();
+    let output = rustdoc().input("input.rs").arg("--test").run_fail().stdout_utf8();
 
     let should_contain = &[
         "input.rs - foo (line 5)",