The html package (aka x/net/html) before 2018-07-13 in Go mishandles “in frameset” insertion mode, leading to a “panic: runtime error” for html.Parse of <template><object>, <template><applet>, or <template><marquee>. This is related to HTMLTreeBuilder.cpp in WebKit.
bugs.chromium.org/p/chromium/issues/detail?id=829668
github.com/golang/go/issues/27016
github.com/golang/net/commit/aaf60122140d3fcf75376d319f0554393160eb50
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