[INFO] crate argo 0.0.1 is already in cache [INFO] extracting crate argo 0.0.1 into work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/reg/argo/0.0.1 [INFO] extracting crate argo 0.0.1 into work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/reg/argo/0.0.1 [INFO] validating manifest of argo-0.0.1 on toolchain master#2bde39b8edce6463e1c37f8a8082a875e7b536b1 [ERROR] this task or one of its parent failed! [ERROR] overridden task result to build-fail:broken [ERROR] caused by: missing Cargo.toml for argo-0.0.1 [ERROR]