Clicking on the [src] link for any repo shows you first the line numbers and then the source code. For example here: https://docs.rs/spirv-reflect/0.1.2/src/spirv_reflect/lib.rs.html#1-601 I get this on Firefox 63.0.3: 
Clicking on the [src] link for any repo shows you first the line numbers and then the source code.
For example here: https://docs.rs/spirv-reflect/0.1.2/src/spirv_reflect/lib.rs.html#1-601
I get this on Firefox 63.0.3: