[INFO] updating cached repository euank/tokio-libvirt
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/euank/tokio-libvirt
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/euank/tokio-libvirt" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/euank/tokio-libvirt"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/euank/tokio-libvirt'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/euank/tokio-libvirt" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/euank/tokio-libvirt"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/euank/tokio-libvirt'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 280a77c8953d0ae7fdbe3375bddd0db98b1adbb2
[INFO] sha for GitHub repo euank/tokio-libvirt: 280a77c8953d0ae7fdbe3375bddd0db98b1adbb2
[INFO] validating manifest of euank/tokio-libvirt on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of euank/tokio-libvirt on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing euank/tokio-libvirt
[INFO] finished frobbing euank/tokio-libvirt
[INFO] frobbed toml for euank/tokio-libvirt written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/euank/tokio-libvirt/Cargo.toml
[INFO] started frobbing euank/tokio-libvirt
[INFO] finished frobbing euank/tokio-libvirt
[INFO] frobbed toml for euank/tokio-libvirt written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/euank/tokio-libvirt/Cargo.toml
[INFO] crate euank/tokio-libvirt already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating git repository `https://github.com/euank/xdr-rs/`
[INFO] [stderr] error: failed to load source for a dependency on `xdr`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update https://github.com/euank/xdr-rs/?branch=update-for-current-rs#6e598cfa
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   revspec '6e598cfad0c9e2b685597688776a5886e8f9afa2' 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" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed