[INFO] updating cached repository toidiu/dkv
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/toidiu/dkv
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/toidiu/dkv" "work/ex/beta-1.38-1/sources/1.37.0/gh/toidiu/dkv"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/toidiu/dkv'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/toidiu/dkv" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/toidiu/dkv"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/toidiu/dkv'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 307736fe4919628d54fe909d0d5fd600ec6c9b3e
[INFO] sha for GitHub repo toidiu/dkv: 307736fe4919628d54fe909d0d5fd600ec6c9b3e
[INFO] validating manifest of toidiu/dkv on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of toidiu/dkv on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing toidiu/dkv
[INFO] removed workspace from toidiu/dkv
[INFO] removed path dependency grpcio-proto from toidiu/dkv
[INFO] finished frobbing toidiu/dkv
[INFO] frobbed toml for toidiu/dkv written to work/ex/beta-1.38-1/sources/1.37.0/gh/toidiu/dkv/Cargo.toml
[INFO] started frobbing toidiu/dkv
[INFO] removed workspace from toidiu/dkv
[INFO] removed path dependency grpcio-proto from toidiu/dkv
[INFO] finished frobbing toidiu/dkv
[INFO] frobbed toml for toidiu/dkv written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/toidiu/dkv/Cargo.toml
[INFO] crate toidiu/dkv already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `grpcio-proto = "^0.1.0"`
[INFO] [stderr]   candidate versions found which didn't match: 0.4.0, 0.3.0, 0.2.0
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `dkv v0.1.0 (/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/toidiu/dkv)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed