Given following log snippets, their explanation, and nothing else, explain what failure, if any, occurred during build of this package.

  Snippets are in a format of [X] : [Y], where [X] is a log snippet, and [Y] is the explanation.

  Snippets are delimited with '================'.

  Drawing on information from all snippets, provide a concise explanation of the issue and recommend a solution.

  Explanation of the issue, and recommended solution, should take a handful of sentences.

  Snippets:

  [Failures:
  1) MiniMagick::Shell#execute with open3 executes the command in the shell
     Failure/Error: expect(stderr).to match("unable to open image")
       expected "identify: no decode delegate for this image format `' @ error/constitute.c/ReadImage/746.\n" to match "unable to open image"
       Diff:
       @@ -1 +1 @@
       -unable to open image
       +identify: no decode delegate for this image format `' @ error/constitute.c/ReadImage/746.
     # ./spec/lib/mini_magick/shell_spec.rb:54:in 'block (5 levels) in <top (required)>'
     # /usr/share/gems/gems/webmock-3.23.1/lib/webmock/rspec.rb:39:in 'block (2 levels) in <top (required)>']: [RSpec test failure causing the build failure.
The stderr output is caught into stderr variable and matched against "unable to open image", which is testing the underlying binary this library wraps. It changed the message which causes the test failure.]

Issue: Test "MiniMagick::Shell#execute with open3 executes the command in the shell" failed due to the binary, this executes, changed the format of the output message.
Resolution: Patch the code at "./spec/lib/mini_magick/shell_spec.rb:54" from `match("unable to open image")` to the new `match("no decode delegate for this image format")`.