error: error loading target specification: could not find specification for target "x86_64-lupos"
  |
  = help: run `rustc --print target-list` for a list of built-in targets

error: error loading target specification: could not find specification for target "x86_64-lupos"
  |
  = help: run `rustc --print target-list` for a list of built-in targets

warning: autocfg could not probe for `std`
