[INFO] updating cached repository yangsheng1985/hello_world
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yangsheng1985/hello_world
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yangsheng1985/hello_world" "work/ex/pr-60620-1/sources/master#ef01f29964df207f181bd5bcf236e41372a17273/gh/yangsheng1985/hello_world"`
[INFO] [stderr] Cloning into 'work/ex/pr-60620-1/sources/master#ef01f29964df207f181bd5bcf236e41372a17273/gh/yangsheng1985/hello_world'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yangsheng1985/hello_world" "work/ex/pr-60620-1/sources/try#a7cff45e655f886da150e206c7acbe984df4ab71/gh/yangsheng1985/hello_world"`
[INFO] [stderr] Cloning into 'work/ex/pr-60620-1/sources/try#a7cff45e655f886da150e206c7acbe984df4ab71/gh/yangsheng1985/hello_world'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 328ccb466bb5934db879384d4a89a3d268095148
[INFO] sha for GitHub repo yangsheng1985/hello_world: 328ccb466bb5934db879384d4a89a3d268095148
[INFO] validating manifest of yangsheng1985/hello_world on toolchain master#ef01f29964df207f181bd5bcf236e41372a17273
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+ef01f29964df207f181bd5bcf236e41372a17273-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of yangsheng1985/hello_world on toolchain try#a7cff45e655f886da150e206c7acbe984df4ab71
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a7cff45e655f886da150e206c7acbe984df4ab71-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing yangsheng1985/hello_world
[INFO] finished frobbing yangsheng1985/hello_world
[INFO] frobbed toml for yangsheng1985/hello_world written to work/ex/pr-60620-1/sources/master#ef01f29964df207f181bd5bcf236e41372a17273/gh/yangsheng1985/hello_world/Cargo.toml
[INFO] started frobbing yangsheng1985/hello_world
[INFO] finished frobbing yangsheng1985/hello_world
[INFO] frobbed toml for yangsheng1985/hello_world written to work/ex/pr-60620-1/sources/try#a7cff45e655f886da150e206c7acbe984df4ab71/gh/yangsheng1985/hello_world/Cargo.toml
[INFO] crate yangsheng1985/hello_world already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+ef01f29964df207f181bd5bcf236e41372a17273-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: custom registry support via the `registry.index` configuration is being removed, this functionality will not work in the future
[INFO] [stderr]     Updating `git://crates.mirrors.ustc.edu.cn/index` index
[INFO] [stderr] warning: spurious network error (2 tries remaining): remote error: access denied or repository not exported: /index; class=Net (12)
[INFO] [stderr] warning: spurious network error (1 tries remaining): remote error: access denied or repository not exported: /index; class=Net (12)
[INFO] [stderr] error: failed to fetch `git://crates.mirrors.ustc.edu.cn/index`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   remote error: access denied or repository not exported: /index; class=Net (12)
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+ef01f29964df207f181bd5bcf236e41372a17273-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed