website fails to build with recent hugo
It seems there were some changes in hugo.
The current builder already warns (see e.g. Pipeline #29434)
$ hugo
Building sites … WARN 2020/09/08 18:27:48 Page's .Hugo is deprecated and will be removed in a future release. Use the global hugo function.
On my local machine it fails completely
christi@trinidad:~/Uni/Src/dune-website(master)$ hugo
Building sites … WARN 2020/09/08 20:38:01 Page.Hugo is deprecated and will be removed in a future release. Use the global hugo function.
ERROR 2020/09/08 20:38:07 render of "page" failed: execute of template failed: template: groups/single.html:10:5: executing "groups/single.html" at <.Render>: error calling Render: "/home/christi/Uni/Src/dune-website/content/modules/dumux.md:12:8": failed to execute template ["short"] v: "/home/christi/Uni/Src/dune-website/layouts/modules/short.html:12:8": execute of template failed: template: modules/short.html:12:8: executing "modules/short.html" at <(isset .Params "requires") and (gt (len .Params.requires) 0)>: can't give argument to non-function isset .Params "requires"
ERROR 2020/09/08 20:38:07 render of "page" failed: execute of template failed: template: groups/single.html:10:5: executing "groups/single.html" at <.Render>: error calling Render: "/home/christi/Uni/Src/dune-website/content/modules/dune-alugrid.md:12:8": failed to execute template ["short"] v: "/home/christi/Uni/Src/dune-website/layouts/modules/short.html:12:8": execute of template failed: template: modules/short.html:12:8: executing "modules/short.html" at <(isset .Params "requires") and (gt (len .Params.requires) 0)>: can't give argument to non-function isset .Params "requires"
ERROR 2020/09/08 20:38:07 render of "page" failed: execute of template failed: template: groups/single.html:10:5: executing "groups/single.html" at <.Render>: error calling Render: failed to execute template ["short"] v: "/home/christi/Uni/Src/dune-website/layouts/modules/short.html:12:8": execute of template failed: template: modules/short.html:12:8: executing "modules/short.html" at <(isset .Params "requires") and (gt (len .Params.requires) 0)>: can't give argument to non-function isset .Params "requires"
ERROR 2020/09/08 20:38:07 render of "page" failed: execute of template failed: template: groups/single.html:10:5: executing "groups/single.html" at <.Render>: error calling Render: "/home/christi/Uni/Src/dune-website/content/modules/dune-fem-howto.md:12:8": failed to execute template ["short"] v: "/home/christi/Uni/Src/dune-website/layouts/modules/short.html:12:8": execute of template failed: template: modules/short.html:12:8: executing "modules/short.html" at <(isset .Params "requires") and (gt (len .Params.requires) 0)>: can't give argument to non-function isset .Params "requires"
Total in 8691 ms
Error: Error building site: failed to render pages: render of "page" failed: execute of template failed: template: groups/single.html:10:5: executing "groups/single.html" at <.Render>: error calling Render: "/home/christi/Uni/Src/dune-website/content/modules/dune-fem.md:12:8": failed to execute template ["short"] v: "/home/christi/Uni/Src/dune-website/layouts/modules/short.html:12:8": execute of template failed: template: modules/short.html:12:8: executing "modules/short.html" at <(isset .Params "requires") and (gt (len .Params.requires) 0)>: can't give argument to non-function isset .Params "requires"