tree 80a517b4e0e47f41708b7162d8dae32cc4159aa2
parent 9be4c76910e0df7decb33c5d400260f1d8c217a1
author Simon Sapin <simon.sapin@exyr.org> 1548086132 +0100
committer Simon Sapin <simon.sapin@exyr.org> 1548092513 +0100

Fix some non-determinism in help messages for E0277 errors.

The diagnostic for this error prints `the following implementations
were found` followed by the first N relevant impls, sorted.

This commit makes the sort happen before slicing,
so that the set of impls being printed is deterministic
when the input is not.