[INFO] crate matchdb 0.0.1 is already in cache [INFO] extracting crate matchdb 0.0.1 into work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/reg/matchdb/0.0.1 [INFO] extracting crate matchdb 0.0.1 into work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/reg/matchdb/0.0.1 [INFO] validating manifest of matchdb-0.0.1 on toolchain master#f66e4697ae286985ddefc53c3a047614568458bb [ERROR] this task or one of its parent failed! [ERROR] overridden task result to build-fail:broken [ERROR] caused by: missing Cargo.toml for matchdb-0.0.1 [ERROR]