'parse raises an error for unknown switches' test failure

[Apteryks]

Hello,

Updating this package to 1.2.1 in GNU Guix, I see the following test failure:

starting phase `check'
......................................................................................................................................................../tmp/guix-build-ruby-thor-1.2.1.drv-0/source/spec/actions/inject_into_file_spec.rb:155: warning: setting Encoding.default_external
/tmp/guix-build-ruby-thor-1.2.1.drv-0/source/spec/actions/inject_into_file_spec.rb:159: warning: setting Encoding.default_external
......................................................................................................................................................................................................................................................................................................F..................................................................................................................................................................................................................................................................................................................................................................

Failures:

  1) Thor::Options#parse raises an error for unknown switches
     Failure/Error: expect { check_unknown! }.to raise_error(Thor::UnknownArgumentError, expected)

       expected Thor::UnknownArgumentError with "Unknown switches \"--baz\"\nDid you mean?  \"--bar\"", got #<Thor::UnknownArgumentError: Unknown switches "--baz"
       Did you mean?  "--bar"> with backtrace:
         # ./lib/thor/parser/options.rb:146:in `check_unknown!'
         # ./spec/parser/options_spec.rb:17:in `check_unknown!'
         # ./spec/parser/options_spec.rb:119:in `block (4 levels) in <top (required)>'
         # ./spec/parser/options_spec.rb:119:in `block (3 levels) in <top (required)>'
     # ./spec/parser/options_spec.rb:119:in `block (3 levels) in <top (required)>'

Finished in 0.64922 seconds (files took 0.29552 seconds to load)
801 examples, 1 failure

Failed examples:

rspec ./spec/parser/options_spec.rb:112 # Thor::Options#parse raises an error for unknown switches

Coverage report generated for RSpec to /tmp/guix-build-ruby-thor-1.2.1.drv-0/source/coverage. 2225 / 2341 LOC (95.04%) covered.
Stopped processing SimpleCov as a previous error not related to SimpleCov has been detected
error: in phase 'check': uncaught exception:
%exception #<&invoke-error program: "rspec" arguments: ("spec") exit-status: 1 term-signal: #f stop-signal: #f> 
phase `check' failed after 1.1 seconds
command "rspec" "spec" failed with status 1

The direct dependencies in use are:

ruby-rspec@3.12.0 ruby-simplecov@0.22.0 ruby-webmock@3.11.2

Perhaps something to do with the very recent rspec version used?

Thanks!

[p8]

Which version of Ruby are you using?

[Apteryks]

I think it was 2.7.x.