Language Server crashes after upload on Arduino Zero

[rsora]

Describe the bug
When I open the IDE, After installing the Arduino SAMD Boards and connecting an Arduino Zero (Native Port) I open a Blink example.
Then I Click on the upload/arrow button and the upload goes fine but the Language Server crashes showing a popup in the bottom right corner.
Here the panic swhown by the LS logs

fatal error: sync: Unlock of unlocked RWMutex
goroutine 7 [running]:
runtime.throw(0xae9c5f, 0x20)
	C:/hostedtoolcache/windows/go/1.13.15/x64/src/runtime/panic.go:774 +0x79 fp=0xc00023d2e0 sp=0xc00023d2b0 pc=0x430f19
sync.throw(0xae9c5f, 0x20)
	C:/hostedtoolcache/windows/go/1.13.15/x64/src/runtime/panic.go:760 +0x3c fp=0xc00023d300 sp=0xc00023d2e0 pc=0x430e8c
sync.(*RWMutex).Unlock(0xc000131930)
	C:/hostedtoolcache/windows/go/1.13.15/x64/src/sync/rwmutex.go:129 +0xc6 fp=0xc00023d338 sp=0xc00023d300 pc=0x47c046
sync.(*Cond).Wait(0xc0001e2240)
	C:/hostedtoolcache/windows/go/1.13.15/x64/src/sync/cond.go:55 +0x8e fp=0xc00023d370 sp=0xc00023d338 pc=0x47894e
github.com/bcmi-labs/arduino-language-server/handler.(*InoHandler).waitClangdStart(0xc000131900, 0xc000207760, 0x13)
	D:/a/arduino-language-server/arduino-language-server/handler/handler.go:102 +0xfb fp=0xc00023d3d0 sp=0xc00023d370 pc=0x94943b
github.com/bcmi-labs/arduino-language-server/handler.(*InoHandler).HandleMessageFromIDE(0xc000131900, 0xbb3aa0, 0xc00001e198, 0xc0001807e0, 0xc000228050, 0x0, 0x0, 0x0, 0x0)
	D:/a/arduino-language-server/arduino-language-server/handler/handler.go:194 +0x402b fp=0xc00023dd60 sp=0xc00023d3d0 pc=0x94da9b
github.com/bcmi-labs/arduino-language-server/handler.(*InoHandler).HandleMessageFromIDE-fm(0xbb3aa0, 0xc00001e198, 0xc0001807e0, 0xc000228050, 0xa73720, 0xc00027a040, 0xc00004ec60, 0xa0bca0)
	D:/a/arduino-language-server/arduino-language-server/handler/handler.go:149 +0x59 fp=0xc00023ddb8 sp=0xc00023dd60 pc=0x95ed09
github.com/sourcegraph/jsonrpc2.(*HandlerWithErrorConfigurer).Handle(0xc000186160, 0xbb3aa0, 0xc00001e198, 0xc0001807e0, 0xc000228050)
	C:/Users/runneradmin/go/pkg/mod/github.com/sourcegraph/jsonrpc2@v0.0.0-20200429184054-15c2290dcb37/handler_with_error.go:21 +0x7a fp=0xc00023de60 sp=0xc00023ddb8 pc=0x91ef0a
github.com/sourcegraph/jsonrpc2.(*Conn).readMessages(0xc0001807e0, 0xbb3aa0, 0xc00001e198)
	C:/Users/runneradmin/go/pkg/mod/github.com/sourcegraph/jsonrpc2@v0.0.0-20200429184054-15c2290dcb37/jsonrpc2.go:522 +0x571 fp=0xc00023dfc8 sp=0xc00023de60 pc=0x921f11
runtime.goexit()
	C:/hostedtoolcache/windows/go/1.13.15/x64/src/runtime/asm_amd64.s:1357 +0x1 fp=0xc00023dfd0 sp=0xc00023dfc8 pc=0x45bef1
created by github.com/sourcegraph/jsonrpc2.NewConn
	C:/Users/runneradmin/go/pkg/mod/github.com/sourcegraph/jsonrpc2@v0.0.0-20200429184054-15c2290dcb37/jsonrpc2.go:334 +0x1e0
goroutine 1 [chan receive]:
main.main()
	D:/a/arduino-language-server/arduino-language-server/main.go:57 +0x65f
goroutine 6 [syscall]:
os/signal.signal_recv(0x0)
	C:/hostedtoolcache/windows/go/1.13.15/x64/src/runtime/sigqueue.go:147 +0xa3
os/signal.loop()
	C:/hostedtoolcache/windows/go/1.13.15/x64/src/os/signal/signal_unix.go:23 +0x29
created by os/signal.init.0
	C:/hostedtoolcache/windows/go/1.13.15/x64/src/os/signal/signal_unix.go:29 +0x48
goroutine 8 [sync.Cond.Wait]:
runtime.goparkunlock(...)
	C:/hostedtoolcache/windows/go/1.13.15/x64/src/runtime/proc.go:310
sync.runtime_notifyListWait(0xc0001e2310, 0x0)
	C:/hostedtoolcache/windows/go/1.13.15/x64/src/runtime/sema.go:510 +0x106
sync.(*Cond).Wait(0xc0001e2300)
	C:/hostedtoolcache/windows/go/1.13.15/x64/src/sync/cond.go:56 +0xa4
github.com/bcmi-labs/arduino-language-server/handler.(*ProgressProxyHandler).handlerLoop(0xc0001e4140)
	D:/a/arduino-language-server/arduino-language-server/handler/progress.go:55 +0x209
created by github.com/bcmi-labs/arduino-language-server/handler.NewProgressProxy
	D:/a/arduino-language-server/arduino-language-server/handler/progress.go:44 +0xcc
goroutine 9 [sleep]:
runtime.goparkunlock(...)
	C:/hostedtoolcache/windows/go/1.13.15/x64/src/runtime/proc.go:310
time.Sleep(0x5f5e100)
	C:/hostedtoolcache/windows/go/1.13.15/x64/src/runtime/time.go:105 +0x16c
github.com/bcmi-labs/arduino-language-server/handler.(*InoHandler).rebuildEnvironmentLoop(0xc000131900)
	D:/a/arduino-language-server/arduino-language-server/handler/builder.go:40 +0x97
created by github.com/bcmi-labs/arduino-language-server/handler.NewInoHandler
	D:/a/arduino-language-server/arduino-language-server/handler/handler.go:129 +0x326
goroutine 18 [runnable]:
github.com/bcmi-labs/arduino-language-server/handler.(*InoHandler).HandleMessageFromIDE.func1(0xc000131900, 0xbb3aa0, 0xc00001e198, 0xc000230000)
	D:/a/arduino-language-server/arduino-language-server/handler/handler.go:209
created by github.com/bcmi-labs/arduino-language-server/handler.(*InoHandler).HandleMessageFromIDE
	D:/a/arduino-language-server/arduino-language-server/handler/handler.go:209 +0x2ee6
[Info  - 11:38:10 AM] Connection to server got closed. Server will restart.
[Error - 11:38:10 AM] Request textDocument/codeAction failed.
Error: Connection got disposed.
    at Object.dispose (C:\Users\Arduino\Desktop\IDE2\arduino-pro-ide_0.1.4-snapshot.3042c1a_Windows_64bit\resources\app\plugins\vscode-arduino-language-server\extension\dist\bundle.js:5369:25)
    at Object.dispose (C:\Users\Arduino\Desktop\IDE2\arduino-pro-ide_0.1.4-snapshot.3042c1a_Windows_64bit\resources\app\plugins\vscode-arduino-language-server\extension\dist\bundle.js:6492:35)
    at LanguageClient.handleConnectionClosed (C:\Users\Arduino\Desktop\IDE2\arduino-pro-ide_0.1.4-snapshot.3042c1a_Windows_64bit\resources\app\plugins\vscode-arduino-language-server\extension\dist\bundle.js:8727:42)
    at LanguageClient.handleConnectionClosed (C:\Users\Arduino\Desktop\IDE2\arduino-pro-ide_0.1.4-snapshot.3042c1a_Windows_64bit\resources\app\plugins\vscode-arduino-language-server\extension\dist\bundle.js:10066:15)
    at closeHandler (C:\Users\Arduino\Desktop\IDE2\arduino-pro-ide_0.1.4-snapshot.3042c1a_Windows_64bit\resources\app\plugins\vscode-arduino-language-server\extension\dist\bundle.js:8714:18)
    at CallbackList.invoke (C:\Users\Arduino\Desktop\IDE2\arduino-pro-ide_0.1.4-snapshot.3042c1a_Windows_64bit\resources\app\plugins\vscode-arduino-language-server\extension\dist\bundle.js:4046:39)
    at Emitter.fire (C:\Users\Arduino\Desktop\IDE2\arduino-pro-ide_0.1.4-snapshot.3042c1a_Windows_64bit\resources\app\plugins\vscode-arduino-language-server\extension\dist\bundle.js:4105:36)
    at closeHandler (C:\Users\Arduino\Desktop\IDE2\arduino-pro-ide_0.1.4-snapshot.3042c1a_Windows_64bit\resources\app\plugins\vscode-arduino-language-server\extension\dist\bundle.js:4705:26)
    at CallbackList.invoke (C:\Users\Arduino\Desktop\IDE2\arduino-pro-ide_0.1.4-snapshot.3042c1a_Windows_64bit\resources\app\plugins\vscode-arduino-language-server\extension\dist\bundle.js:4046:39)
    at Emitter.fire (C:\Users\Arduino\Desktop\IDE2\arduino-pro-ide_0.1.4-snapshot.3042c1a_Windows_64bit\resources\app\plugins\vscode-arduino-language-server\extension\dist\bundle.js:4105:36)
2021/02/09 11:38:11 logging to c:\Users\Arduino\AppData\Local\Temp\.arduinoProIDE-unsaved202119-2612-hr9fz.s83fnm\Blink\inols-err.log
2021/02/09 11:38:11 logging to c:\Users\Arduino\AppData\Local\Temp\.arduinoProIDE-unsaved202119-2612-hr9fz.s83fnm\Blink\inols.log
2021/02/09 11:38:11 Initial board configuration: {"Arduino Zero (Native USB Port)" arduino:samd:arduino_zero_native}
2021/02/09 11:38:11 [92mIDE --> LS     CL: REQUEST initialize 0[0m
2021/02/09 11:38:11 IDE --> initialize 0 [93m locked[0m
2021/02/09 11:38:11 IDE --> initialize 0 [93m unlocked[0m
2021/02/09 11:38:11 [91mIDE <-- LS     CL: ANSWER UNBOUND (0)[0m
2021/02/09 11:38:11 INIT--- initializing workbench
2021/02/09 11:38:11 INIT--- [93m locked[0m
2021/02/09 11:38:11     --> initialize(file:///c%3A/Users/Arduino/AppData/Local/Temp/.arduinoProIDE-unsaved202119-2612-hr9fz.s83fnm/Blink)
2021/02/09 11:38:11 running:  c:\Users\Arduino\Desktop\IDE2\arduino-pro-ide_0.1.4-snapshot.3042c1a_Windows_64bit\resources\app\node_modules\arduino-ide-extension\build\arduino-cli.exe compile --fqbn arduino:samd:arduino_zero_native --only-compilation-database --clean --source-override C:\Users\Arduino\AppData\Local\Temp\124657455 --format json C:\Users\Arduino\AppData\Local\Temp\.arduinoProIDE-unsaved202119-2612-hr9fz.s83fnm\Blink
2021/02/09 11:38:11 [92mIDE --> LS     CL: NOTIFICATION initialized[0m
2021/02/09 11:38:11 [92mIDE     LS <-- CL: NOTIFICATION $/progress[0m
2021/02/09 11:38:11 CLG <-- $/progress notif10 (done)
2021/02/09 11:38:13 arduino-cli output: {
  "compiler_out": "",
  "compiler_err": "",
  "builder_result": {
    "build_path": "C:\\Users\\Arduino\\AppData\\Local\\Temp\\arduino-sketch-669C438ACCA105656BD4929E458C24FF"
  },
  "success": true
}

After this the Language Server restarts itself.

To Reproduce
Steps to reproduce the behavior:

1. Install Arduino SAMD boards
2. Connect and select an Arduino Zero in the Board Selector
3. File > Examples > Basics > Blink
4. Click Upload Button

Expected behavior
The LS does not crash

Desktop (please complete the following information):
OS: Win 10 Pro
Version: 0.1.4-snapshot.3042c1a
Date: 2021-02-08T10:04:20.854Z
CLI Version: 0.15.1 alpha [c7403ed2]

cc @cmaglie, being a panic generated by the LS