tree 76d4d931a759c0e855d54a84733b8e1be8cc4e97
parent 712d70677d75100e322ec398b1118702dce48ff2
author Jacob MacDonald <jakemac@google.com> 1603483714 -0700
committer GitHub <noreply@github.com> 1603483714 -0700

allow the 2.12 prerelease sdks (dart-lang/source_span#64)