composer create-project acquia/reservoir-project reservoir-project --stability=alpha failed

[popstas]

Got conflict, tried composer create-project --stability=alpla and --stability=dev, same conflict:

  Problem 1
    - Installation request for acquia/reservoir 1.0.0-alpha3 -> satisfiable by acquia/reservoir[1.0.0-alpha3].
    - webflo/drupal-core-strict 8.4.0 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0].
    - webflo/drupal-core-strict 8.4.0-rc2 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0].
    - webflo/drupal-core-strict 8.4.1 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0].
    - webflo/drupal-core-strict 8.4.2 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0].
    - webflo/drupal-core-strict 8.4.3 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0].
    - webflo/drupal-core-strict 8.4.4 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0].
    - webflo/drupal-core-strict 8.4.5 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0].
    - webflo/drupal-core-strict 8.4.x-dev requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0].
    - webflo/drupal-core-strict 8.5.0-alpha1 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0].
    - webflo/drupal-core-strict 8.5.0 requires composer/installers v1.5.0 -> satisfiable by composer/installers[v1.5.0].
    - webflo/drupal-core-strict 8.5.0-beta1 requires composer/installers v1.5.0 -> satisfiable by composer/installers[v1.5.0].
    - webflo/drupal-core-strict 8.5.0-rc1 requires composer/installers v1.5.0 -> satisfiable by composer/installers[v1.5.0].
    - webflo/drupal-core-strict 8.5.x-dev requires composer/installers v1.5.0 -> satisfiable by composer/installers[v1.5.0].
    - webflo/drupal-core-strict 8.6.x-dev requires composer/installers v1.5.0 -> satisfiable by composer/installers[v1.5.0].
    - don't install composer/installers v1.4.0|don't install composer/installers v1.2.0
    - don't install composer/installers v1.5.0|don't install composer/installers v1.2.0
    - acquia/reservoir 1.0.0-alpha3 requires composer/installers 1.2.0 -> satisfiable by composer/installers[v1.2.0].
    - acquia/reservoir 1.0.0-alpha3 requires webflo/drupal-core-strict ^8.4.0 -> satisfiable by webflo/drupal-core-strict[8.4.0, 8.4.0-alpha1, 8.4.0-beta1, 8.4.0-rc1, 8.4.0-rc2, 8.4.1, 8.4.2, 8.4.3, 8.4.4, 8.4.5, 8.4.x-dev, 8.5.0, 8.5.0-alpha1, 8.5.0-beta1, 8.5.0-rc1, 8.5.x-dev, 8.6.x-dev].
    - webflo/drupal-core-strict 8.4.0-alpha1 requires twig/twig v1.32.0 -> satisfiable by twig/twig[v1.32.0].
    - webflo/drupal-core-strict 8.4.0-beta1 requires twig/twig v1.32.0 -> satisfiable by twig/twig[v1.32.0].
    - webflo/drupal-core-strict 8.4.0-rc1 requires twig/twig v1.32.0 -> satisfiable by twig/twig[v1.32.0].
    - Conclusion: don't install twig/twig v1.32.0

Result of composer install on master branch causes same conflict:

  Problem 1
    - webflo/drupal-core-strict 8.6.x-dev requires composer/installers v1.5.0 -> satisfiable by composer/installers[v1.5.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.5.x-dev requires composer/installers v1.5.0 -> satisfiable by composer/installers[v1.5.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.5.0-rc1 requires composer/installers v1.5.0 -> satisfiable by composer/installers[v1.5.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.5.0-beta1 requires composer/installers v1.5.0 -> satisfiable by composer/installers[v1.5.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.5.0-alpha1 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.5.0 requires composer/installers v1.5.0 -> satisfiable by composer/installers[v1.5.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.4.x-dev requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.4.5 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.4.4 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.4.3 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.4.2 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.4.1 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.4.0-rc2 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.4.0 requires composer/installers v1.4.0 -> satisfiable by composer/installers[v1.4.0] but these conflict with your requirements or minimum-stability.
    - webflo/drupal-core-strict 8.4.0-alpha1 requires twig/twig v1.32.0 -> satisfiable by twig/twig[v1.32.0].
    - webflo/drupal-core-strict 8.4.0-beta1 requires twig/twig v1.32.0 -> satisfiable by twig/twig[v1.32.0].
    - webflo/drupal-core-strict 8.4.0-rc1 requires twig/twig v1.32.0 -> satisfiable by twig/twig[v1.32.0].
    - Conclusion: don't install twig/twig v1.32.0
    - Installation request for webflo/drupal-core-strict ^8.4.0 -> satisfiable by webflo/drupal-core-strict[8.4.0, 8.4.0-alpha1, 8.4.0-beta1, 8.4.0-rc1, 8.4.0-rc2, 8.4.1, 8.4.2, 8.4.3, 8.4.4, 8.4.5, 8.4.x-dev, 8.5.0, 8.5.0-alpha1, 8.5.0-beta1, 8.5.0-rc1, 8.5.x-dev, 8.6.x-dev].

[tanmayk]

Same conflict for me as well.

[backlineint]

I am attempting to upgrade an existing project to Drupal 8.5 and seeing a similar conflict.