[INFO] updating cached repository palfrey/peacenik
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/palfrey/peacenik
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/palfrey/peacenik" "work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/palfrey/peacenik"`
[INFO] [stderr] Cloning into 'work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/palfrey/peacenik'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/palfrey/peacenik" "work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/palfrey/peacenik"`
[INFO] [stderr] Cloning into 'work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/palfrey/peacenik'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bd2ff0379ad0e70fbe17714afa8c84c4c848dd7c
[INFO] sha for GitHub repo palfrey/peacenik: bd2ff0379ad0e70fbe17714afa8c84c4c848dd7c
[INFO] validating manifest of palfrey/peacenik on toolchain master#589beb979c0f1a9736e02e578913db88398c3ba5
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of palfrey/peacenik on toolchain try#42445ded8fd34235a676755cb5d079658ed51f6a
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+42445ded8fd34235a676755cb5d079658ed51f6a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing palfrey/peacenik
[INFO] finished frobbing palfrey/peacenik
[INFO] frobbed toml for palfrey/peacenik written to work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/palfrey/peacenik/Cargo.toml
[INFO] started frobbing palfrey/peacenik
[INFO] finished frobbing palfrey/peacenik
[INFO] frobbed toml for palfrey/peacenik written to work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/palfrey/peacenik/Cargo.toml
[INFO] crate palfrey/peacenik already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating git repository `https://github.com/palfrey/yaml-rust.git`
[INFO] [stderr] error: failed to load source for a dependency on `yaml-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update https://github.com/palfrey/yaml-rust.git#8a36cdb2
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   revspec '8a36cdb2d16cfd9578951371d9d2d88b7001151d' 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" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed