moved sanity command to exec context

Author: Shourya742

src/bootstrap/src/core/sanity.rs

@@ -361,8 +361,11 @@ than building it.
             // There are three builds of cmake on windows: MSVC, MinGW, and
             // Cygwin. The Cygwin build does not have generators for Visual
             // Studio, so detect that here and error.
-            let out =
-                command("cmake").arg("--help").run_always().run_capture_stdout(build).stdout();
+            let out = command("cmake")
+                .arg("--help")
+                .run_always()
+                .run_capture_stdout_exec_ctx(&build)
+                .stdout();
             if !out.contains("Visual Studio") {
                 panic!(
                     "