[INFO] cloning repository appcypher/viper
[INFO] running `"git" "clone" "--bare" "git://github.com/appcypher/viper.git" "work/cache/sources/gh/appcypher/viper"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/appcypher/viper'...
[INFO] running `"git" "clone" "work/cache/sources/gh/appcypher/viper" "work/ex/beta-1.37-6/sources/1.36.0/gh/appcypher/viper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/appcypher/viper'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/appcypher/viper" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/appcypher/viper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/appcypher/viper'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4619081bbab9c153602a3e9c7e8f8b8fe81d25fe
[INFO] sha for GitHub repo appcypher/viper: 4619081bbab9c153602a3e9c7e8f8b8fe81d25fe
[INFO] validating manifest of appcypher/viper on toolchain 1.36.0
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to broken:cargo-toml
[ERROR] caused by: missing Cargo.toml for appcypher/viper
[ERROR]