fix unmarshalable field

.idea/workspace.xml

@@ -3,9 +3,6 @@
   <component name="ChangeListManager">
     <list default="true" id="fc2840de-29dc-4fca-8e0e-a283562f60ca" name="Default Changelist" comment="">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/client.go" beforeDir="false" afterPath="$PROJECT_DIR$/client.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/cmd/main.go" beforeDir="false" afterPath="$PROJECT_DIR$/cmd/main.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/server.go" beforeDir="false" afterPath="$PROJECT_DIR$/server.go" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />

client.go

@@ -64,7 +64,7 @@ type ClientOptions struct {
 type Client struct {
 	Id            string `json:"id" yaml:"id" xml:"id"`
 	Running       bool   `json:"running" yaml:"running" xml:"running"`
-	Done          chan bool
+	Done          chan bool `json:"-" yaml:"-" xml:"-"`
 	Options       *ClientOptions `json:"Options" yaml:"Options" xml:"Options"`
 	exitCode      *int
 	report        *TestReport