[INFO] updating cached repository dmitry-egorov/rust-experiment
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dmitry-egorov/rust-experiment
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dmitry-egorov/rust-experiment" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/dmitry-egorov/rust-experiment"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/dmitry-egorov/rust-experiment'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dmitry-egorov/rust-experiment" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/dmitry-egorov/rust-experiment"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/dmitry-egorov/rust-experiment'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b1e54651931166ca3ea0dbb707c0d77745c5777f
[INFO] sha for GitHub repo dmitry-egorov/rust-experiment: b1e54651931166ca3ea0dbb707c0d77745c5777f
[INFO] validating manifest of dmitry-egorov/rust-experiment on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dmitry-egorov/rust-experiment on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dmitry-egorov/rust-experiment
[INFO] finished frobbing dmitry-egorov/rust-experiment
[INFO] frobbed toml for dmitry-egorov/rust-experiment written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/dmitry-egorov/rust-experiment/Cargo.toml
[INFO] started frobbing dmitry-egorov/rust-experiment
[INFO] finished frobbing dmitry-egorov/rust-experiment
[INFO] frobbed toml for dmitry-egorov/rust-experiment written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/dmitry-egorov/rust-experiment/Cargo.toml
[INFO] crate dmitry-egorov/rust-experiment already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating git repository `https://github.com/gfx-rs/gfx_device_gl.git`
[INFO] [stderr] error: failed to load source for a dependency on `gfx_device_gl`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update https://github.com/gfx-rs/gfx_device_gl.git#902a228f
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to fetch into /mnt/crater-raid/crater/work/local/cargo-home/git/db/gfx_device_gl-04acdbfcf1254bf7
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to authenticate when downloading repository
[INFO] [stderr] attempted to find username/password via git's `credential.helper` support, but failed
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to acquire username/password from local configuration
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed