WSL Ubuntu 16.04: hc package "spurious network error"

ddw360@ZEPHYR:~/dev/happs/holochain-rust-todo$ lsb_release -a && uname -ra && lscpu | grep Architecture
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.5 LTS
Release:        16.04
Codename:       xenial
Linux ZEPHYR 4.4.0-17134-Microsoft #471-Microsoft Fri Dec 07 20:04:00 PST 2018 x86_64 x86_64 x86_64 GNU/Linux
Architecture:          x86_64
ddw360@ZEPHYR:~/dev/happs/holochain-rust-todo$ node -v && npm -v
v10.15.0
6.4.1
ddw360@ZEPHYR:~/dev/happs/holochain-rust-todo$ rustc -V && cargo -V
rustc 1.33.0-nightly (60e825389 2018-12-28)
cargo 1.33.0-nightly (2cf1f5dda 2018-12-11)
ddw360@ZEPHYR:~/dev/happs/holochain-rust-todo$ rustup target add wasm32-unknown-unknown
info: component 'rust-std' for target 'wasm32-unknown-unknown' is up to date
ddw360@ZEPHYR:~/dev/happs/holochain-rust-todo$ cd test && npm --silent install
audited 144 packages in 1.653s
found 0 vulnerabilities



   ╭───────────────────────────────────────────────────────────────╮
   │                                                               │
   │       New minor version of npm available! 6.4.1 → 6.5.0       │
   │   Changelog: https://github.com/npm/cli/releases/tag/v6.5.0   │
   │               Run npm install -g npm to update!               │
   │                                                               │
   ╰───────────────────────────────────────────────────────────────╯

ddw360@ZEPHYR:~/dev/happs/holochain-rust-todo/test$ npm show @holochain/holochain-nodejs

@holochain/holochain-nodejs@0.2.0 | MIT | deps: 1 | versions: 13
Nodejs Holochain Container primarily for test execution
https://github.com/holochain/holochain-rust#readme

dist
.tarball: https://registry.npmjs.org/@holochain/holochain-nodejs/-/holochain-nodejs-0.2.0.tgz
.shasum: fe54179fba7448353e186e8fec99b1b229f5462d
.integrity: sha512-w8lF76v32pzNqSGc2Aw9T1z5mpsBSofFpHSv76Zf0hD3gjIncqOGk1/LbLRoseETzos6c+LSkIyjAbU5FXSYXQ==
.unpackedSize: 110.3 kB

dependencies:
node-pre-gyp: ^0.11.0

maintainers:
- connoropolous <connorturland@gmail.com>
- lucksus <nicolas@lucksus.eu>
- neonphog <neonphog@neonphog.com>
- philipbeadle <philip.beadle@live.com.au>
- willemolding <willemolding@gmail.com>

dist-tags:
latest: 0.2.0

published a month ago by connoropolous <connorturland@gmail.com>
ddw360@ZEPHYR:~/dev/happs/holochain-rust-todo/test$ ldconfig -p | grep libzmq
        libzmq.so.5 (libc6,x86-64) => /usr/local/lib/libzmq.so.5
        libzmq.so (libc6,x86-64) => /usr/local/lib/libzmq.so
ddw360@ZEPHYR:~/dev/happs/holochain-rust-todo/test$ whereis hc && hc -V
hc: /usr/local/bin/hc
hc 0.0.2
ddw360@ZEPHYR:~/dev/happs/holochain-rust-todo/test$ cd ..
ddw360@ZEPHYR:~/dev/happs/holochain-rust-todo$ ls
app.json  README.md  test  zomes
ddw360@ZEPHYR:~/dev/happs/holochain-rust-todo$ hc package
> cargo build --release --target=wasm32-unknown-unknown
    Updating git repository `https://github.com/holochain/holochain-rust`
warning: spurious network error (2 tries remaining): [7] Couldn't connect to server; class=Net (12)
warning: spurious network error (1 tries remaining): [7] Couldn't connect to server; class=Net (12)
error: failed to load source for a dependency on `hdk`

Caused by:
  Unable to update https://github.com/holochain/holochain-rust?branch=develop

Caused by:
  failed to fetch into /home/ddw360/.cargo/git/db/holochain-rust-c3b6365fc5bfa642

Caused by:
  [7] Couldn't connect to server; class=Net (12)
Error: command cargo build --release --target=wasm32-unknown-unknown was not successful
ddw360@ZEPHYR:~/dev/happs/holochain-rust-todo$ DA