https://fuellabs.github.io/sway/master/book/forc/commands/forc_addr2line.html as it can be seen at the moment, master version of the book is missing auto generated forc command docs. But latest release https://fuellabs.github.io/sway/v0.58.0/book/forc/commands/forc_addr2line.html has them. We should investigate why. Thanks for @sarahschwartz reporting