Getting build error for Drupal core 11.2.4 [#3546081]

Problem / Motivation

When I attempt to create a simplytest.me sandbox for Drupal Core 11.2.4, I get a build error. The error is reproduceable.

Steps:
1. Go to Simpytest.me
2. In the Evaluate Drupal projects field, type Drupal.
3. In the auto suggest drop down, choose Drupal core.
4. Accept the default of 11.2.4 (11.x)
5. Click Launch sandbox

Expected result: Build completes and lunches sandbox instance of Drupal core 11.2.4.

Actual result: Build fails

There was a build error

This may be the error:

Installation failed, reverting ./composer.json and ./composer.lock to their original content.
Command Failed (Tugboat Error 1064): Exit code: 2; Command: cd stm && composer require --dev --no-install drupal/core:11.2.4 drupal/core-dev:11.2.4

Complete build log

Workaround:

6. Do a build for 11.2.x-dev instead.

Comment	File	Size	Author
#2	11-2-4 build log.txt	62.94 KB	charles belov

Comments

Comment #1

10 September 2025 at 22:56

charles belov created an issue. See original summary.

Comment #2

charles belov

he/him

English

San Francisco, CA, US

commented 10 September 2025 at 22:58

Issue summary:

View changes

Status	File	Size
new	11-2-4 build log.txt	62.94 KB

Comment #3

murz

English

Yerevan, Armenia

commented 11 September 2025 at 12:42

Getting the same issue when trying to install the commercetools module:
https://simplytest.me/configure?project=commercetools&version=2.0.x-dev

This may be the error:

Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires drupal/core-dev 11.2.3 -> satisfiable by drupal/core-dev[11.2.3].
    - drupal/core-dev 11.2.3 requires phpunit/phpunit ^10.5.19 || ^11.5.3 -> satisfiable by phpunit/phpunit[10.5.19, ..., 10.5.x-dev, 11.5.3, ..., 11.5.x-dev].
    - phpunit/phpunit[10.3.5, ..., 10.5.26] require sebastian/diff ^5.0 -> found sebastian/diff[5.0.0, ..., 5.1.x-dev] but the package is fixed to 7.0.0 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.
    - phpunit/phpunit[10.5.27, ..., 10.5.x-dev] require sebastian/diff ^5.1.1 -> found sebastian/diff[5.1.1, 5.1.x-dev] but the package is fixed to 7.0.0 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.
    - phpunit/phpunit[11.5.3, ..., 11.5.x-dev] require sebastian/diff ^6.0.2 -> found sebastian/diff[6.0.2, 6.0.x-dev] but the package is fixed to 7.0.0 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Installation failed, reverting ./composer.json and ./composer.lock to their original content.

Changing the core version to 11.1.x resolves the problem.