test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess_encoding[Err\xf6r on stderr-latin-1] AssertionError: assert (('Errör on stderr')) in '\nPackage operations: 1 install, 0 updates, 0 removals\n\n - Installing simple-project (1.2.3 /Users/runner/work/poetry/poetry/tests/fixtures/simple_project)\n' + where '\nPackage operations: 1 install, 0 updates, 0 removals\n\n - Installing simple-project (1.2.3 /Users/runner/work/poetry/poetry/tests/fixtures/simple_project)\n' = fetch_output() + where fetch_output = <cleo.io.buffered_io.BufferedIO object at 0x106cf9c90>.fetch_output

test_other_error AssertionError: assert False + where False = <built-in method startswith of str object at 0x10731d210>('Package operations: 1 install, 0 updates, 0 removals\n\n - Installing simple-project (1.2.3 /Users/runner/work/poetry/poetry/tests/fixtures/non-existing)\n\n FileNotFoundError\n') + where <built-in method startswith of str object at 0x10731d210> = 'Package operations: 1 install, 0 updates, 0 removals\n\n - Installing simple-project (1.2.3 /Users/runner/work/poetry/poetry/tests/fixtures/non-existing)'.startswith

test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess[False-exception0-build] AssertionError: assert False + where False = <built-in method startswith of str object at 0x106db89f0>('\nPackage operations: 1 install, 0 updates, 0 removals\n\n - Installing simple-project (1.2.3 /Users/runner/work/poetry/poetry/tests/fixtures/simple_project)\n\n IsolatedBuildError\n\n hide the original error\n \n original error\n') + where <built-in method startswith of str object at 0x106db89f0> = '\nPackage operations: 1 install, 0 updates, 0 removals\n\n - Installing simple-project (1.2.3 /Users/runner/work/poetry/poetry/tests/fixtures/simple_project)\n'.startswith

test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess[True-exception0-build] ImportError: cannot import name 'ExceptionTrace' from 'cleo.ui.exception_trace' (/Users/runner/Library/Caches/pypoetry/virtualenvs/poetry--2IDkNy2-py3.10/lib/python3.10/site-packages/cleo/ui/exception_trace/__init__.py)

test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess_encoding[None-utf-8] AssertionError: assert ((None or 'Errör on stdout')) in '\nPackage operations: 1 install, 0 updates, 0 removals\n\n - Installing simple-project (1.2.3 /Users/runner/work/poetry/poetry/tests/fixtures/simple_project)\n' + where '\nPackage operations: 1 install, 0 updates, 0 removals\n\n - Installing simple-project (1.2.3 /Users/runner/work/poetry/poetry/tests/fixtures/simple_project)\n' = fetch_output() + where fetch_output = <cleo.io.buffered_io.BufferedIO object at 0x106573d30>.fetch_output

test_executor_no_supported_hash_types AssertionError: assert 'No usable hash type(s) for demo' in '\nPackage operations: 1 install, 0 updates, 0 removals\n\n - Installing demo (0.1.0 /Users/runner/work/poetry/poetry/tests/fixtures/distributions/demo-0.1.0.tar.gz)\n'

test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess[False-exception1-get_requires_for_build] AssertionError: assert False + where False = <built-in method startswith of str object at 0x106db89f0>('\nPackage operations: 1 install, 0 updates, 0 removals\n\n - Installing simple-project (1.2.3 /Users/runner/work/poetry/poetry/tests/fixtures/simple_project)\n\n IsolatedBuildError\n\n hide the original error\n \n original error\n') + where <built-in method startswith of str object at 0x106db89f0> = '\nPackage operations: 1 install, 0 updates, 0 removals\n\n - Installing simple-project (1.2.3 /Users/runner/work/poetry/poetry/tests/fixtures/simple_project)\n'.startswith

test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess[True-exception1-get_requires_for_build] ImportError: cannot import name 'ExceptionTrace' from 'cleo.ui.exception_trace' (/Users/runner/Library/Caches/pypoetry/virtualenvs/poetry--2IDkNy2-py3.10/lib/python3.10/site-packages/cleo/ui/exception_trace/__init__.py)

test_build_backend_errors_are_reported_correctly_if_caused_by_subprocess[False-exception0-get_requires_for_build] AssertionError: assert False + where False = <built-in method startswith of str object at 0x10731dd70>('\nPackage operations: 1 install, 0 updates, 0 removals\n\n - Installing simple-project (1.2.3 /Users/runner/work/poetry/poetry/tests/fixtures/simple_project)\n\n IsolatedBuildError\n\n hide the original error\n \n original error\n') + where <built-in method startswith of str object at 0x10731dd70> = '\nPackage operations: 1 install, 0 updates, 0 removals\n\n - Installing simple-project (1.2.3 /Users/runner/work/poetry/poetry/tests/fixtures/simple_project)\n'.startswith