[INFO] cloning repository guangie88/diskusage_poller
[INFO] running `"git" "clone" "--bare" "git://github.com/guangie88/diskusage_poller.git" "work/cache/sources/gh/guangie88/diskusage_poller"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/guangie88/diskusage_poller'...
[INFO] running `"git" "clone" "work/cache/sources/gh/guangie88/diskusage_poller" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/guangie88/diskusage_poller"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/guangie88/diskusage_poller'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/guangie88/diskusage_poller" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/guangie88/diskusage_poller"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/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#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of guangie88/diskusage_poller on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-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-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/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-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/guangie88/diskusage_poller/Cargo.toml
[INFO] crate guangie88/diskusage_poller has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-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/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed