panic: runtime error: invalid memory address or nil pointer dereference
  [signal SIGSEGV: segmentation violation code=0x1 addr=0x40 pc=0x13d7ba7]
  
  goroutine 10 [running]:
  github.com/docker/buildx/util/progress.(*Printer).Warnings(...)
  	github.com/docker/buildx/util/progress/printer.go:65
  github.com/docker/buildx/commands.runBake.func2()
  	github.com/docker/buildx/commands/bake.go:149 +0x27
  github.com/docker/buildx/util/progress.NewPrinter.func1()
  	github.com/docker/buildx/util/progress/printer.go:129 +0x20a
  created by github.com/docker/buildx/util/progress.NewPrinter in goroutine 1
  	github.com/docker/buildx/util/progress/printer.go:112 +0x2b1