Cargo: error: failed to fetch `https://github.com/rust-lang/crates.io-index` - `Caused by: [16/-17] The SSL certificate is invalid`

[gac55]

I am using a dockerfile to build an environment with Rust. I have been using this as a base.
Error:
Updating registry `https://github.com/rust-lang/crates.io-index` error: failed to fetch `https://github.com/rust-lang/crates.io-index

It has previously functioned fine. What has changed to cause this?

Steps to reproduce -

Clone above repo and build via docker build -t "test:latest" /path/to/repo/

Edit, I added the verbose output and got the following:

Caused by: [16/-17] The SSL certificate is invalid

[apanda]

I am seeing the same thing on Debian and on (Travis)[https://travis-ci.com/NetSys/NetBricks#L3392] with Rust nightly toolchain. This is not a problem when either using the nightly build from the 26th (through rustup default nightly-2016-11-26-x86_64-unknown-linux-gnu) or when using OS X.

[apanda]

Seems to have also happened to some of the builds for #3342 e.g.,

[est31]

Dupe of #3340

[gac55]

Thanks guys. Trying to understand how to rectify. Can you help me with what action I should take?

[est31]

As its fixed on master, I'd say you should wait until the next nightly, or alternatively, manually roll back the version on your travis setup. I see from reading the other issue that this workaround might fix it: https://github.com/rust-lang/cargo/issues/598#issuecomment-56089462

[gac55]

Thanking you.

Workaround - ENV SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt