title: playground - timeout running go build
body: <p>When I try to run code snippet on <a href="https://play.golang.org/p/CKVtN4MRW3F" rel="nofollow noreferrer">playground (snippet) </a>, I get an error:</p>
  <pre><code>timeout running go build
  go: finding module for package github.com/spf13/viper
  go: downloading github.com/spf13/viper v1.7.1
  go: found github.com/spf13/viper in github.com/spf13/viper v1.7.1
  go: downloading github.com/magiconair/properties v1.8.1
  go: downloading github.com/hashicorp/hcl v1.0.0
  go: downloading github.com/mitchellh/mapstructure v1.1.2
  go: downloading github.com/spf13/jwalterweatherman v1.0.0
  go: downloading github.com/spf13/cast v1.3.0
  go: downloading github.com/pelletier/go-toml v1.2.0
  go: downloading github.com/spf13/pflag v1.0.3
  go: downloading gopkg.in/ini.v1 v1.51.0
  go: downloading github.com/subosito/gotenv v1.2.0
  go: downloading gopkg.in/yaml.v2 v2.2.4
  go: downloading github.com/fsnotify/fsnotify v1.4.7
  go: downloading github.com/spf13/afero v1.1.2
  go: downloading golang.org/x/text v0.3.2
  go: downloading golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0
  </code></pre>
  <p>To run code &quot;playground&quot; have to download <a href="https://github.com/spf13/viper" rel="nofollow noreferrer">viper</a> and It's transitive dependencies.</p>
  <p>I am assuming the &quot;playground&quot; has limit to get dependencies.
  Could I solve it❓</p>