vm/qemu: remove an unused diagnose field

We never write to the channel.

1 files changed, 0 insertions, 6 deletions

diff --git a/vm/qemu/qemu.go b/vm/qemu/qemu.go
index 738ff5acf..3749dd317 100644
--- a/vm/qemu/qemu.go
+++ b/vm/qemu/qemu.go
@@ -108,7 +108,6 @@ type instance struct {
 	qemu        *exec.Cmd
 	merger      *vmimpl.OutputMerger
 	files       map[string]string
-	diagnose    chan bool
 }
 
 type archConfig struct {
@@ -368,7 +367,6 @@ func (pool *Pool) ctor(workdir, sshkey, sshuser string, index int) (vmimpl.Insta
 		workdir:    workdir,
 		sshkey:     sshkey,
 		sshuser:    sshuser,
-		diagnose:   make(chan bool, 1),
 	}
 	if st, err := os.Stat(inst.image); err == nil && st.Size() == 0 {
 		// Some kernels may not need an image, however caller may still
@@ -683,15 +681,11 @@ func (inst *instance) Run(timeout time.Duration, stop <-chan bool, command strin
 	}
 
 	go func() {
-	retry:
 		select {
 		case <-time.After(timeout):
 			signal(vmimpl.ErrTimeout)
 		case <-stop:
 			signal(vmimpl.ErrTimeout)
-		case <-inst.diagnose:
-			cmd.Process.Kill()
-			goto retry
 		case err := <-inst.merger.Err:
 			cmd.Process.Kill()
 			if cmdErr := cmd.Wait(); cmdErr == nil {