I just submitted a report on the tutorial alone, then realized that all of the “StrategoXT Manual” links on http://strategoxt.org/Stratego/StrategoDocumentation (to wit, http://hydra.nixos.org/job/strategoxt-docs/strategoxt-manual/html/latest/download/1/manual/chunk-chapter/index.html, http://hydra.nixos.org/job/strategoxt-docs/strategoxt-manual/html/latest/download/1/manual/chunk-chapter/tutorial.html, http://hydra.nixos.org/job/strategoxt-docs/strategoxt-manual/html/latest/download/1/manual/chunk-chapter/examples.html, and http://hydra.nixos.org/job/strategoxt-docs/strategoxt-manual/html/latest/download/1/manual/chunk-chapter/reference-manual.html) generate the same error message:

"500 Internal Server Error
Caught exception in Hydra::Controller::Build->download “error: path ‘/nix/store/1v498lgkxr0wbbq1yiajz3m0l3d583hm-source-tarball-0’ is not a valid store path”

Submitted on 30 April 2018 at 10:31