SIGSEGV

Maybe we can add a `--force` flag for `tiup cluster patch`, to ignore the error in test env.

Does `tiup cluster patch` match your requirements?

We don't support raw binary because we should keep tracing the patch change and deploy the patched tarball in the future scale-out. For example, the user patch all tiflash nodes...

Maybe we can implement it in https://github.com/pingcap/tiup/issues/139

sad:( It's because that we need replace the keyword `test-cluster` to the real cluster name (the grafana template use `test-cluster` as the default one), and your cluster name contains the...

We can add " in replace stage

@lonng I think we should deprecate `TIUP_MIRRORS` after we introduced `tiup mirror set`. It's just for compatibility. Next step we should remove this env instead of change it's behavior.

To compile piston to web, we should have [emscripten](https://github.com/kripken/emscripten) installed. And the work to port to emscripten is simple since emscripten reimplement sdl1 and support sdl2 natively. In fact, I'm...

I made a [demo](https://github.com/webassembly-cc/web_demo) to show how to make rust and sdl2 work on web, hope it can help.

Do you have llvm-link in your PATH? my llvm-link is at `${emsdk_portable}/clang/fastcomp/build_incoming_64//bin/llvm-link`, and I have these lines to setup my PATH: ``` PATH+=:${emsdk_portable} PATH+=:${emsdk_portable}/clang/fastcomp/build_incoming_64/bin PATH+=:${emsdk_portable}/node/4.1.1_64bit/bin PATH+=:${emsdk_portable}/emscripten/incoming ``` The `${emsdk_portable}` is...