+ url = https://github.com/rust-lang-nursery/edition-guide.git
+[submodule "src/llvm-project"]
+ path = src/llvm-project
+ url = https://github.com/rust-lang/llvm-project.git
+ branch = rustc/8.0-2019-01-16
+[submodule "src/doc/embedded-book"]
+ path = src/doc/embedded-book
+ url = https://github.com/rust-embedded/book.git
\ No newline at end of file