Cannot build with latest rust " here, drop of `self` needs exclusive access to `*self.url`" ...

[ticketshop0devops]

There is a fatal error in build with latest rust

"...
here, drop of self needs exclusive access to *self.url
..."

in building url 1.4 src

This can be fixed by adding url to Cargo.toml

[package]
name = "cmdipass"
version = "0.2.0"
authors = ["Justin Fitzsimmons <justinf@nulogy.com>"]

[dependencies]
docopt = "0.8"
hyper = "0.10"
rust-crypto = "0.2"
base64 = "0.3"
rand = "0.3"
serde = "1.0"
serde_derive = "1.0"
serde_json = "1.0"
log = "0.3"
env_logger = "0.3"
url = "2.2.0"

and deleting Cargo.lock