Print stack trace of all goroutines when emergency halting if verbose

phases.go

@@ -6,6 +6,7 @@ import "log"
 import "io/fs"
 import "errors"
 import "context"
+import "runtime"
 import "strings"
 import "path/filepath"
 import "git.tebibyte.media/sashakoshka/go-cli"
@@ -273,6 +274,11 @@ func (this *environment) phase80Shutdown() bool {
 		<- ctx.Done()
 		if errors.Is(context.Cause(ctx), context.DeadlineExceeded) {
 			log.Println("XXX (80) shutdown timeout expired, performing emergency halt")
+			if Verb() {
+				dumpBuffer := make([]byte, 8192)
+				runtime.Stack(dumpBuffer, true)
+				log.Printf("XXX (80) stack trace of all goroutines:\n%s", dumpBuffer)
+			}
 			log.Printf("====== [%s] END =======", this.name)
 			os.Exit(1)
 		}