Could not delete /var/www/html/content/vendor/composer/

Attempting to run a composer update command, you know the one used regularly

composer update

I ran into a 'could not delete' response

Loading composer repositories with package information
Info from https://repo.packagist.org: #StandWithUkraine
Updating dependencies
Nothing to modify in lock file
Installing dependencies from lock file (including require-dev)
Package operations: 0 installs, 1 update, 0 removals
 - Downloading drupal/core (9.5.10)
 - Upgrading drupal/core (9.5.2 => 9.5.10): Extracting archive
   Update of drupal/core failed

In Filesystem.php line 314:
                                                                                                                  
Could not delete /var/www/html/content/vendor/composer/ab878421/drupal-core-a627d1b/modules/ckeditor/tests/src:

Hopefully, all ran smoothly and you are good to go.  However, not with the response noted above.  Note on line 9, there is an error - 'Update of drupal/core failed'.  Each time the above command was run, the fail point would always change.

Was it a permissions issue?

The key driver of the failure, was ‘Could not delete’.  Hinting at a directory permission issue.  So initial attempts to remedy were based on permissions.  Initial attempts to resolve this error was adjusting the chmod

chmod ug+x vendor/

However, post making the above adjustment, had no impact on the error.

Adjusting the composer configuration time-out

Is composer timing out during the process of the update?  There are severl approaches to review time-out.

Check whether the package is being loaded from composers' cache

composer update/install -o -vvv

Yes - try clearing composer's cache or try adding

--cache-dir=/dev/null

If you want to force the download of an archive, use the --prefer-dist option in combination with --no-dev

Otherwise you could try raising composer's process timeout value:

composer config --global process-timeout 600 # default is 300

600 is denoted as seconds

Successful response of the command

Loading composer repositories with package information
Info from https://repo.packagist.org: #StandWithUkraine
Updating dependencies
Nothing to modify in lock file
Installing dependencies from lock file (including require-dev)
Package operations: 0 installs, 1 update, 0 removals
 - Downloading drupal/core (9.5.10)
 - Upgrading drupal/core (9.5.2 => 9.5.10): Extracting archive
Package doctrine/reflection is abandoned, you should avoid using it. Use roave/better-reflection instead.
Package symfony/debug is abandoned, you should avoid using it. Use symfony/error-handler instead.
Generating autoload files
Hardening vendor directory with .htaccess and web.config files.
50 packages you are using are looking for funding.
Use the `composer fund` command to find out more!
Scaffolding files for drupal/core:
 - Copy [project-root]/.editorconfig from assets/scaffold/files/editorconfig
 - Copy [project-root]/.gitattributes from assets/scaffold/files/gitattributes
 - Copy [web-root]/.csslintrc from assets/scaffold/files/csslintrc
 - Copy [web-root]/.eslintignore from assets/scaffold/files/eslintignore
 - Copy [web-root]/.htaccess from assets/scaffold/files/htaccess
 - Copy [web-root]/example.gitignore from assets/scaffold/files/example.gitignore
 - Copy [web-root]/sites/default/default.services.yml from assets/scaffold/files/default.services.yml
 - Copy [web-root]/sites/default/default.settings.php from assets/scaffold/files/default.settings.php
Cleaning installed packages.
No security vulnerability advisories found