rewrite many-crates-but-no-match to rmake

Author: Oneirical

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -100,7 +100,6 @@ run-make/lto-smoke-c/Makefile
 run-make/macos-deployment-target/Makefile
 run-make/macos-fat-archive/Makefile
 run-make/manual-link/Makefile
-run-make/many-crates-but-no-match/Makefile
 run-make/metadata-dep-info/Makefile
 run-make/min-global-align/Makefile
 run-make/mingw-export-call-convention/Makefile

tests/run-make/many-crates-but-no-match/Makefile

@@ -0,0 +1,31 @@
+// An extended version of the ui/changing-crates.rs test, this test puts
+// multiple mismatching crates into the search path of crateC (A2 and A3)
+// and checks that the standard error contains helpful messages to indicate
+// what should be done to fix the issue.
+// See https://github.com/rust-lang/rust/issues/13266
+
+use run_make_support::{fs_wrapper, rustc};
+
+fn main() {
+    fs_wrapper::create_dir("a1");
+    fs_wrapper::create_dir("a2");
+    fs_wrapper::create_dir("a3");
+    rustc().crate_type("rlib").out_dir("a1").input("crateA1.rs").run();
+    rustc().crate_type("rlib").library_search_path("a1").input("crateB.rs").run();
+    rustc().crate_type("rlib").out_dir("a2").input("crateA2.rs").run();
+    rustc().crate_type("rlib").out_dir("a3").input("crateA3.rs").run();
+    // Ensure crateC fails to compile since A1 is "missing" and A2/A3 hashes do not match
+    rustc()
+        .crate_type("rlib")
+        .library_search_path("a2")
+        .library_search_path("a3")
+        .input("crateC.rs")
+        .run_fail()
+        .assert_stderr_contains(
+            "found possibly newer version of crate `crateA` which `crateB` depends on",
+        )
+        .assert_stderr_contains("note: perhaps that crate needs to be recompiled?")
+        .assert_stderr_contains("crate `crateA`:")
+        .assert_stderr_contains("crate `crateB`:");
+    // the 'crate `crateA`' will match two entries.
+}