The e2e test only ever talks plain http://127.0.0.1 (never https://), so
a TLS backend is unnecessary weight -- reqwest 0.13's `rustls` feature
pulls in aws-lc-rs, a large C codebase that was taking a very long time
to compile (and once contributed to a pagefile-exhaustion build failure
alongside concurrent cargo invocations). Building reqwest013 with
default-features=false and no TLS feature is enough for the plain-HTTP
client the test needs.
iamdoubz
10edf053a9