Use eprint! instead of eprintln!

Author: GuillaumeGomez

src/librustdoc/doctest/runner.rs

@@ -131,7 +131,7 @@ mod __doctest_mod {{
             .output()
             .expect(\"failed to run command\");
         if !out.status.success() {{
-            eprintln!(\"{{}}\", String::from_utf8_lossy(&out.stderr));
+            eprint!(\"{{}}\", String::from_utf8_lossy(&out.stderr));
             ExitCode::FAILURE
         }} else {{
             ExitCode::SUCCESS

tests/rustdoc-ui/edition-2024-doctest-error-output.rs renamed to tests/rustdoc-ui/doctest/edition-2024-error-output.rs

@@ -1,12 +1,12 @@
 
 running 1 test
-test tests/rustdoc-ui/edition-2024-doctest-error-output.rs - (line 10) ... FAILED
+test $DIR/edition-2024-error-output.rs - (line 10) ... FAILED
 
 failures:
 
----- tests/rustdoc-ui/edition-2024-doctest-error-output.rs - (line 10) stdout ----
+---- $DIR/edition-2024-error-output.rs - (line 10) stdout ----
 
-thread 'main' panicked at /tmp/rustdoctestSZq9aS/doctest_bundle_2024.rs:6:1:
+thread 'main' panicked at /tmp/rustdoctestbhbYqX/doctest_bundle_2024.rs:6:1:
 assertion `left == right` failed
   left: 4
  right: 5
@@ -24,9 +24,8 @@ stack backtrace:
 note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
 
 
-
 failures:
-    tests/rustdoc-ui/edition-2024-doctest-error-output.rs - (line 10)
+    $DIR/edition-2024-error-output.rs - (line 10)
 
 test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in $TIME