message: Fetch mdBook in new location
  The mdBook project was moved to the rust-lang organization, out of the
  nursery organization.
diff: @@ -98,7 +98,7 @@ jobs:
  - bash: |
  set -e
  mkdir mdbook
  - curl -Lf https://github.com/rust-lang-nursery/mdBook/releases/download/v0.3.7/mdbook-v0.3.7-x86_64-unknown-linux-gnu.tar.gz | tar -xz --directory=./mdbook
  + curl -Lf https://github.com/rust-lang/mdBook/releases/download/v0.3.7/mdbook-v0.3.7-x86_64-unknown-linux-gnu.tar.gz | tar -xz --directory=./mdbook
  echo "##vso[task.prependpath]`pwd`/mdbook"
  displayName: "Install mdbook"
  - bash: cargo doc --no-deps
  