diff --git a/tests/test-install.t b/tests/test-install.t
--- a/tests/test-install.t
+++ b/tests/test-install.t
@@ -18,7 +18,7 @@
   checking available compression engines (*zlib*) (glob)
   checking available compression engines for wire protocol (*zlib*) (glob)
   checking "re2" regexp engine \((available|missing)\) (re)
-  checking "re2" regexp engine Rust bindings \((installed|missing)\) (re)
+  checking "re2" regexp engine Rust bindings \((installed|missing)\) (re) (rust !)
   checking templates (*mercurial?templates)... (glob)
   checking default template (*mercurial?templates?map-cmdline.default) (glob)
   checking commit editor... (*) (glob)
@@ -78,7 +78,7 @@
   checking available compression engines (*zlib*) (glob)
   checking available compression engines for wire protocol (*zlib*) (glob)
   checking "re2" regexp engine \((available|missing)\) (re)
-  checking "re2" regexp engine Rust bindings \((installed|missing)\) (re)
+  checking "re2" regexp engine Rust bindings \((installed|missing)\) (re) (rust !)
   checking templates (*mercurial?templates)... (glob)
   checking default template (*mercurial?templates?map-cmdline.default) (glob)
   checking commit editor... (*) (glob)
@@ -126,7 +126,7 @@
   checking available compression engines (*zlib*) (glob)
   checking available compression engines for wire protocol (*zlib*) (glob)
   checking "re2" regexp engine \((available|missing)\) (re)
-  checking "re2" regexp engine Rust bindings \((installed|missing)\) (re)
+  checking "re2" regexp engine Rust bindings \((installed|missing)\) (re) (rust !)
   checking templates (*mercurial?templates)... (glob)
   checking default template (*mercurial?templates?map-cmdline.default) (glob)
   checking commit editor... ($TESTTMP/tools/testeditor.exe)
@@ -154,7 +154,7 @@
   checking available compression engines (*zlib*) (glob)
   checking available compression engines for wire protocol (*zlib*) (glob)
   checking "re2" regexp engine \((available|missing)\) (re)
-  checking "re2" regexp engine Rust bindings \((installed|missing)\) (re)
+  checking "re2" regexp engine Rust bindings \((installed|missing)\) (re) (rust !)
   checking templates (*mercurial?templates)... (glob)
   checking default template (*mercurial?templates?map-cmdline.default) (glob)
   checking commit editor... (c:\foo\bar\baz.exe) (windows !)
@@ -211,7 +211,7 @@
   checking available compression engines (*) (glob)
   checking available compression engines for wire protocol (*) (glob)
   checking "re2" regexp engine \((available|missing)\) (re)
-  checking "re2" regexp engine Rust bindings \((installed|missing)\) (re)
+  checking "re2" regexp engine Rust bindings \((installed|missing)\) (re) (rust !)
   checking templates ($TESTTMP/installenv/*/site-packages/mercurial/templates)... (glob)
   checking default template ($TESTTMP/installenv/*/site-packages/mercurial/templates/map-cmdline.default) (glob)
   checking commit editor... (*) (glob)
@@ -252,7 +252,7 @@
   checking available compression engines (*) (glob)
   checking available compression engines for wire protocol (*) (glob)
   checking "re2" regexp engine \((available|missing)\) (re)
-  checking "re2" regexp engine Rust bindings \((installed|missing)\) (re)
+  checking "re2" regexp engine Rust bindings \((installed|missing)\) (re) (rust !)
   checking templates ($TESTTMP/installenv/*/site-packages/mercurial/templates)... (glob)
   checking default template ($TESTTMP/installenv/*/site-packages/mercurial/templates/map-cmdline.default) (glob)
   checking commit editor... (*) (glob)