desperate hack: hard-code bash path on Windows

ci/ci.sh

@@ -63,7 +63,15 @@ function run_tests {
     done
 
     # Check that the benchmarks build and run, but without actually benchmarking.
-    HYPERFINE="bash -c" ./miri bench
+    if [ "$HOST_TARGET" = i686-pc-windows-msvc ]; then
+      # Some crazy nonsense is going on on Windows where `bash` tries to launch WSL, `$BASH` gets
+      # replaced to a path that contains a space which ofc breaks becuase HYPERFINE is supposed to
+      # be shell-encoded, `'$BASH'` does not get the magic replacement and so it refers to a path
+      # that does not exist... so end result is we have to hard-code the Github CI path here.
+      HYPERFINE="'C:/Program Files/Git/usr/bin/bash' -c" ./miri bench
+    else
+      HYPERFINE="bash -c" ./miri bench
+    fi
   fi
 
   ## test-cargo-miri