Invalid SSL certificate when building a crate with cargo

Question

While trying an example from the tutorial (guessing game) after defining a dependency (rand="0.3.0") I got this:

$ cargo build --verbose
    Updating registry `https://github.com/rust-lang/crates.io-index`
Unable to update registry https://github.com/rust-lang/crates.io-index

Caused by:
  failed to fetch `https://github.com/rust-lang/crates.io-index`

Caused by:
  [16] The SSL certificate is invalid

Added this to cargo registry git repo, but without success:

[http]
    sslVerify = false

Where to dig?

Answer 1

I ran into the same problem today and found that my $HOME/.gitconfig had this:

[url "[email protected]:"]
    insteadOf = https://github.com/

I had added this to make go get to work over SSH for private repos. Commenting this out fixed the error.