[INFO] updating cached repository spiveeworks/lvalue-free-prototype
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/spiveeworks/lvalue-free-prototype
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/spiveeworks/lvalue-free-prototype" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/spiveeworks/lvalue-free-prototype"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/spiveeworks/lvalue-free-prototype'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/spiveeworks/lvalue-free-prototype" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/spiveeworks/lvalue-free-prototype"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/spiveeworks/lvalue-free-prototype'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b658fbd7c0803b09b4bf58cdbd37b8dda5dc20a5
[INFO] sha for GitHub repo spiveeworks/lvalue-free-prototype: b658fbd7c0803b09b4bf58cdbd37b8dda5dc20a5
[INFO] validating manifest of spiveeworks/lvalue-free-prototype on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to broken:cargo-toml
[ERROR] caused by: missing Cargo.toml for spiveeworks/lvalue-free-prototype
[ERROR]