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:

  [Failed to resolve the transaction:
No match for argument: chromium-headless
No match for argument: rubygem(selenium-webdriver)]: [Failure in DNF output installing build root]

Issue: chromium-headless is not available on ppc64le:

https://src.fedoraproject.org/rpms/chromium/blob/0d9761748509bb12051ab149d28c1052cd834f87/f/chromium.spec#_46-48
Resolution: Remove `ppc64le` from build architectures. In this specific case by this change:

~~~
diff --git a/rubygem-actiontext.spec b/rubygem-actiontext.spec
index 9e1790a..34554d6 100644
--- a/rubygem-actiontext.spec
+++ b/rubygem-actiontext.spec
@@ -38,7 +38,9 @@ BuildRequires: rubygem(selenium-webdriver)
 BuildRequires: chromedriver chromium chromium-headless
 # Chromium availability is limited.
 # https://src.fedoraproject.org/rpms/chromium/blob/0d9761748509bb12051ab149d28c1052cd834f87/f/chromium.spec#_800
-ExclusiveArch: x86_64 aarch64 ppc64le noarch
+# and chrome-headless even more:
+# https://src.fedoraproject.org/rpms/chromium/blob/0d9761748509bb12051ab149d28c1052cd834f87/f/chromium.spec#_46-48
+ExclusiveArch: x86_64 aarch64 noarch
 %{?with_js_recompilation:BuildRequires: %{_bindir}/npm}
 BuildArch: noarch
 
~~~