[INFO] cloning repository mexus/memory-watcher
[INFO] running `"git" "clone" "--bare" "git://github.com/mexus/memory-watcher.git" "work/cache/sources/gh/mexus/memory-watcher"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/mexus/memory-watcher'...
[INFO] running `"git" "clone" "work/cache/sources/gh/mexus/memory-watcher" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/mexus/memory-watcher"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/mexus/memory-watcher'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mexus/memory-watcher" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/mexus/memory-watcher"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/mexus/memory-watcher'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a70e97beca7a26f6062fa76c2d60a4f3251a6c57
[INFO] sha for GitHub repo mexus/memory-watcher: a70e97beca7a26f6062fa76c2d60a4f3251a6c57
[INFO] validating manifest of mexus/memory-watcher 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 mexus/memory-watcher 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 mexus/memory-watcher
[INFO] finished frobbing mexus/memory-watcher
[INFO] frobbed toml for mexus/memory-watcher written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/mexus/memory-watcher/Cargo.toml
[INFO] started frobbing mexus/memory-watcher
[INFO] finished frobbing mexus/memory-watcher
[INFO] frobbed toml for mexus/memory-watcher written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/mexus/memory-watcher/Cargo.toml
[INFO] crate mexus/memory-watcher 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/mexus/procinfo-rs.git`
[INFO] [stderr] error: failed to load source for a dependency on `procinfo`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update https://github.com/mexus/procinfo-rs.git#4f093973
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   revspec '4f0939737896fe70fad6363f3d7639f0a07afb26' 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