rspec/rspec-rails — pull request #1151 by alexrothenberg (2014-08-21 17:08:37+00:00)
Title: Removed ammeter-shim and upgraded to ammeter v1.1.1 as it defines `capture`

I fixed the need for this upstream in ammeter. Thanks for reporting the issue you reported alexrothenberg/ammeter#42

I tested this with

```
RAILS_VERSION=4.2.0.beta1 bundle
RAILS_VERSION=4.2.0.beta1 rake
```