Ecto.create failure

$ mix deps.unlock postgrex
$ mix deps.update postgrex
warning: found quoted keyword "test" but the quotes are not required. Note that keywords are always atoms, even when quoted. Similar to atoms, keywords made exclusively of Unicode letters, numbers, underscore, and @ do not require quotes
  mix.exs:52

Resolving Hex dependencies...
Dependency resolution completed:
Unchanged:
  connection 1.0.4
  cowboy 1.1.2
  cowlib 1.0.2
  db_connection 1.1.3
  decimal 1.8.1
  ecto 2.0.6
  file_system 0.2.8
  gettext 0.17.4
  mime 1.3.1
  phoenix 1.2.5
  phoenix_ecto 3.0.0
  phoenix_html 2.10.5
  phoenix_live_reload 1.1.7
  phoenix_pubsub 1.1.2
  plug 1.3.6
  poison 2.2.0
  poolboy 1.5.2
  ranch 1.3.2
New:
  postgrex 0.12.2

Ran your commands and it installs 0.12.2 again. Why wouldn’t it install the latest?