fxa: [fxa-email-service] fail to install

Everytime I try ‘npm install’ in fxa, it fails on:

+ cd fxa-email-service
+ cargo build --bin fxa_email_send
   Compiling openssl v0.9.24
error: failed to run custom build command for `openssl v0.9.24`
process didn't exit successfully: `/home/x/fxa/packages/fxa-email-service/target/debug/build/openssl-0e5b276e20c12757/build-script-build` (exit code: 101)
--- stderr
thread 'main' panicked at 'Unable to detect OpenSSL version', /home/x/.cargo/registry/src/github.com-1ecc6299db9ec823/openssl-0.9.24/build.rs:16:14
note: Run with `RUST_BACKTRACE=1` for a backtrace.

warning: build failed, waiting for other jobs to finish...
error: build failed

I have openssl-devel and pkg-config installed. Any workarounds?