I am working on mozilla firefox open source and it has dependency in using rust.(I have no knowledge in rust and its working fine). I upgraded my OS from macos sierra to mojave. Then when I try to compile my build it generated the following error.
""""""""""
error: failed to resolve patches for https://github.com/rust-lang/crates.io-index Caused by
patch for serde_derive in https://github.com/rust-lang/crates.io-index did not resolve to any crates. If this is unexpected, you may wish to consult: Improve the error message for when a patched dependency doesn't resolve to anything · Issue #4678 · rust-lang/cargo · GitHub
"""""""
I have gone through "Improve the error message for when a patched dependency doesn't resolve to anything · Issue #4678 · rust-lang/cargo · GitHub" but I don't think I have similar reason to reproduce the error.
Can anyone help ?