Can't compile on windows

```
error: Error calling dlltool 'dlltool.exe': program not found

   Compiling syn v2.0.100
   Compiling miniz_oxide v0.8.5
error: could not compile `getrandom` (lib) due to 1 previous error
warning: build failed, waiting for other jobs to finish...
error: failed to compile `simple-http-server v0.6.11`
```