[INFO] updating cached repository guangie88/diskusage_poller
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/guangie88/diskusage_poller
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/guangie88/diskusage_poller" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/guangie88/diskusage_poller"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/guangie88/diskusage_poller'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/guangie88/diskusage_poller" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/guangie88/diskusage_poller"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/guangie88/diskusage_poller'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a76aee1ca1ed3ecf194608e7e7731a9ba0eb0083
[INFO] sha for GitHub repo guangie88/diskusage_poller: a76aee1ca1ed3ecf194608e7e7731a9ba0eb0083
[INFO] validating manifest of guangie88/diskusage_poller on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of guangie88/diskusage_poller on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing guangie88/diskusage_poller
[INFO] finished frobbing guangie88/diskusage_poller
[INFO] frobbed toml for guangie88/diskusage_poller written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/guangie88/diskusage_poller/Cargo.toml
[INFO] started frobbing guangie88/diskusage_poller
[INFO] finished frobbing guangie88/diskusage_poller
[INFO] frobbed toml for guangie88/diskusage_poller written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/guangie88/diskusage_poller/Cargo.toml
[INFO] crate guangie88/diskusage_poller already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating git repository `https://github.com/guangie88/fruently.git`
[INFO] [stderr] error: failed to load source for a dependency on `fruently`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update https://github.com/guangie88/fruently.git?rev=4db5ece#4db5ece8
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   revspec '4db5ece89ff7a2308d94902e8a2326151a44aa36' not found; class=Reference (4); code=NotFound (-3)
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed