[INFO] cloning repository quic-rs/quic
[INFO] running `"git" "clone" "--bare" "git://github.com/quic-rs/quic.git" "work/cache/sources/gh/quic-rs/quic"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/quic-rs/quic'...
[INFO] running `"git" "clone" "work/cache/sources/gh/quic-rs/quic" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/quic-rs/quic"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/quic-rs/quic'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/quic-rs/quic" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/quic-rs/quic"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/quic-rs/quic'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2e153bfe5d890ea68cb73b0c13b43f0260444cf8
[INFO] sha for GitHub repo quic-rs/quic: 2e153bfe5d890ea68cb73b0c13b43f0260444cf8
[INFO] validating manifest of quic-rs/quic 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 quic-rs/quic 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 quic-rs/quic
[INFO] finished frobbing quic-rs/quic
[INFO] frobbed toml for quic-rs/quic written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/quic-rs/quic/Cargo.toml
[INFO] started frobbing quic-rs/quic
[INFO] finished frobbing quic-rs/quic
[INFO] frobbed toml for quic-rs/quic written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/quic-rs/quic/Cargo.toml
[INFO] crate quic-rs/quic 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]     Updating git repository `https://github.com/ctz/rustls`
[INFO] [stderr] error: failed to load source for a dependency on `rustls`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update https://github.com/ctz/rustls?branch=jbp-tls13-draft-28#40f60b57
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   revspec '40f60b57756044ddac02dfa6049a8cfefad163f0' not found; class=Reference (4); code=NotFound (-3)
[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