Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires vimeo/psalm ^2|^3|^4|^5 -> satisfiable by vimeo/psalm[2.0.0, ..., 2.0.17, 3.0.0, ..., 3.18.2, 4.0.0, ..., 4.30.0, 5.0.0, ..., 5.23.1]. - phpunit/phpunit 6.2.4 requires sebastian/diff ^1.4.3 -> satisfiable by sebastian/diff[1.4.3]. - phpunit/phpunit[6.1.4, ..., 6.2.3] require sebastian/diff ^1.4.3 || ^2.0 -> satisfiable by sebastian/diff[1.4.3, 2.0.1]. - Conclusion: don't install sebastian/diff 1.4.3 (conflict analysis result) - phpunit/phpunit[6.3.0, ..., 6.5.14] require sebastian/diff ^2.0 -> satisfiable by sebastian/diff[2.0.1]. - Conclusion: don't install sebastian/diff 2.0.1 (conflict analysis result) - phpunit/phpunit[8.0.0, ..., 8.5.11] require php ^7.2 -> your php version (7.1.33) does not satisfy that requirement. - phpunit/phpunit[8.5.12, ..., 8.5.38] require php >=7.2 -> your php version (7.1.33) does not satisfy that requirement. - phpunit/phpunit[9.0.0, ..., 9.2.6] require php ^7.3 -> your php version (7.1.33) does not satisfy that requirement. - phpunit/phpunit[9.3.0, ..., 9.3.8] require php ^7.3 || ^8.0 -> your php version (7.1.33) does not satisfy that requirement. - phpunit/phpunit[9.3.9, ..., 9.6.19] require php >=7.3 -> your php version (7.1.33) does not satisfy that requirement. - phpunit/phpunit[6.0.0, ..., 6.1.3] require sebastian/diff ^1.2 -> satisfiable by sebastian/diff[1.2.0, ..., 1.4.3]. - Conclusion: don't install sebastian/diff 1.4.1 (conflict analysis result) - Root composer.json requires phpunit/phpunit ^6.0||^8.0||^9.0 -> satisfiable by phpunit/phpunit[6.0.0, ..., 6.5.14, 8.0.0, ..., 8.5.38, 9.0.0, ..., 9.6.19].

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The job was canceled because "ubuntu-20_04_7_1_latest" failed.

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The job was canceled because "ubuntu-20_04_7_1_latest" failed.

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The job was canceled because "ubuntu-20_04_7_1_latest" failed.

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Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/cache@v2. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/cache@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/cache@v2. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/cache@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/