Internal errror dplyr::inner_join

I am experiencing an issue in my package
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The problem arises during the tests where a functions that relies on dplyr::inner_join fails with:
Internal error: xandy must have the same number of columns.

The puzzling thing is that in local (MacOs) the tests work fine and the function executes. Any hints?
@jeroen @jimhester

it builds fine today

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