[INFO] cloning repository aidanhs/tclscan
[INFO] running `"git" "clone" "--bare" "git://github.com/aidanhs/tclscan.git" "work/cache/sources/gh/aidanhs/tclscan"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/aidanhs/tclscan'...
[INFO] running `"git" "clone" "work/cache/sources/gh/aidanhs/tclscan" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/aidanhs/tclscan"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/aidanhs/tclscan'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/aidanhs/tclscan" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/aidanhs/tclscan"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/aidanhs/tclscan'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c52dfcdff501318d4c9e2bdd0cada5775533d4ad
[INFO] sha for GitHub repo aidanhs/tclscan: c52dfcdff501318d4c9e2bdd0cada5775533d4ad
[INFO] validating manifest of aidanhs/tclscan on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of aidanhs/tclscan on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing aidanhs/tclscan
[INFO] finished frobbing aidanhs/tclscan
[INFO] frobbed toml for aidanhs/tclscan written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/aidanhs/tclscan/Cargo.toml
[INFO] started frobbing aidanhs/tclscan
[INFO] finished frobbing aidanhs/tclscan
[INFO] frobbed toml for aidanhs/tclscan written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/aidanhs/tclscan/Cargo.toml
[INFO] crate aidanhs/tclscan already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/crabtw/rust-bindgen.git`
[INFO] [stderr] error: failed to load source for a dependency on `bindgen`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update https://github.com/crabtw/rust-bindgen.git#e8d12489
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to clone into: /mnt/big/ec2-user/crater/work/local/cargo-home/git/db/rust-bindgen-2e3abe1fcf0b07dd
[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/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed