Panic when running watcher

[Its-Alex]

Hi, I have a panic when I run go-watcher

go env

GOARCH="amd64"
GOBIN=""
GOCACHE="/home/alex/.cache/go-build"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/alex/go"
GORACE=""
GOROOT="/usr/lib/go"
GOTMPDIR=""
GOTOOLDIR="/usr/lib/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build165720837=/tmp/go-build -gno-record-gcc-switches"

Command

$ watcher

Error

2018/03/11 19:40:05 Could not run the go binary: exec: "-.-785150": executable file not found in $PATH 
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x46ef4e]

goroutine 7 [running]:
os.(*Process).signal(0x0, 0x502320, 0x56c0e8, 0x0, 0x0)
	/usr/lib/go/src/os/exec_unix.go:56 +0x2e
os.(*Process).Signal(0x0, 0x502320, 0x56c0e8, 0xc42008e100, 0xc420090120)
	/usr/lib/go/src/os/exec.go:129 +0x3f
os.(*Process).kill(0x0, 0xc4200900f0, 0x2)
	/usr/lib/go/src/os/exec_posix.go:54 +0x43
os.(*Process).Kill(0x0, 0x0, 0x54)
	/usr/lib/go/src/os/exec.go:114 +0x2b
github.com/canthefason/go-watcher.(*Runner).kill(0xc42000a160, 0xc4201122c0)
	/home/alex/go/src/github.com/canthefason/go-watcher/run.go:66 +0x41
github.com/canthefason/go-watcher.(*Runner).Run(0xc42000a160, 0xc42000a0c0)
	/home/alex/go/src/github.com/canthefason/go-watcher/run.go:39 +0x211
created by main.main
	/home/alex/go/src/github.com/canthefason/go-watcher/cmd/watcher/main.go:17 +0x110

If you want to reproduce I just listen on a tcp socket. You can ask for anything else.

[bfanger]

I've fixed an issue in PR #25
Until that is merged, running GOPATH=~/go watcher solved the issue in my case.