Logging at level: debug Configuration file: /github/workspace/./_config.yml GitHub Pages: github-pages v231 GitHub Pages: jekyll v3.9.5 Theme: jekyll-theme-primer Theme source: /usr/local/bundle/gems/jekyll-theme-primer-0.6.0 Requiring: jekyll-github-metadata Requiring: jekyll-seo-tag Requiring: jekyll-coffeescript Requiring: jekyll-commonmark-ghpages Requiring: jekyll-gist Requiring: jekyll-github-metadata Requiring: jekyll-paginate Requiring: jekyll-relative-links Requiring: jekyll-optional-front-matter Requiring: jekyll-readme-index Requiring: jekyll-default-layout Requiring: jekyll-titles-from-headings GitHub Metadata: Initializing... Source: /github/workspace/. Destination: /github/workspace/./_site Incremental build: disabled. Enable with --incremental Generating... EntryFilter: excluded /Gemfile EntryFilter: excluded /Gemfile.lock Theme: Ignoring assets/css/style.scss in theme due to existing file with that path in site. Generating: JekyllOptionalFrontMatter::Generator finished in 3.1539e-05 seconds. Generating: JekyllReadmeIndex::Generator finished in 4.0256e-05 seconds. Generating: Jekyll::Paginate::Pagination finished in 3.286e-06 seconds. Generating: JekyllRelativeLinks::Generator finished in 1.1101e-05 seconds. Generating: JekyllDefaultLayout::Generator finished in 1.0009e-05 seconds. Generating: JekyllTitlesFromHeadings::Generator finished in 1.7072e-05 seconds. Rendering: about.html Pre-Render Hooks: about.html Rendering Liquid: about.html Rendering Markup: about.html Rendering Layout: about.html Layout source: site Rendering: ddoc.html Pre-Render Hooks: ddoc.html Rendering Markup: ddoc.html Rendering Layout: ddoc.html Layout source: site Rendering: downloads.html Pre-Render Hooks: downloads.html Rendering Liquid: downloads.html Rendering Markup: downloads.html Rendering Layout: downloads.html Layout source: site Rendering: features.html Pre-Render Hooks: features.html Rendering Markup: features.html Rendering Layout: features.html Layout source: site Rendering: index.html Pre-Render Hooks: index.html Rendering Liquid: index.html Rendering Markup: index.html Rendering Layout: index.html Layout source: site Rendering: schedule.html Pre-Render Hooks: schedule.html Rendering Markup: schedule.html Rendering Layout: schedule.html Layout source: site Rendering: assets/css/style.scss Pre-Render Hooks: assets/css/style.scss Rendering Markup: assets/css/style.scss github-pages 231 | Error: Invalid CSS after "...e: math": expected selector or at-rule, was ".ceil(calc($fon..." on line 55