[INFO] cloning repository https://github.com/CCBTony/rust_datastruct
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CCBTony/rust_datastruct" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCCBTony%2Frust_datastruct", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCCBTony%2Frust_datastruct'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25b0fc476ee391f5c4a90961f1ea540285622ffe
[INFO] checking CCBTony/rust_datastruct against master#3139ff09e9d07f7700f8d15ed25a231e29c43627 for pr-121848-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCCBTony%2Frust_datastruct" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CCBTony/rust_datastruct on toolchain 3139ff09e9d07f7700f8d15ed25a231e29c43627
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3139ff09e9d07f7700f8d15ed25a231e29c43627" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CCBTony/rust_datastruct
[INFO] finished tweaking git repo https://github.com/CCBTony/rust_datastruct
[INFO] tweaked toml for git repo https://github.com/CCBTony/rust_datastruct written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/CCBTony/rust_datastruct already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3139ff09e9d07f7700f8d15ed25a231e29c43627" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] [stderr]       Adding getset v0.0.7 (latest: v0.1.2)
[INFO] [stderr]     Updating `https://mirrors.ustc.edu.cn/crates.io-index/` index
[INFO] [stderr] warning: spurious network error (3 tries remaining): failed to resolve address for mirrors.ustc.edu.cn: Temporary failure in name resolution; class=Net (12)
[INFO] [stderr] warning: spurious network error (2 tries remaining): failed to resolve address for mirrors.ustc.edu.cn: Temporary failure in name resolution; class=Net (12)
[INFO] [stderr] warning: spurious network error (1 tries remaining): failed to resolve address for mirrors.ustc.edu.cn: Temporary failure in name resolution; class=Net (12)
[INFO] [stderr] error: Unable to update registry `https://mirrors.ustc.edu.cn/crates.io-index/`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to fetch `https://mirrors.ustc.edu.cn/crates.io-index/`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   network failure seems to have happened
[INFO] [stderr]   if a proxy or similar is necessary `net.git-fetch-with-cli` may help here
[INFO] [stderr]   https://doc.rust-lang.org/cargo/reference/config.html#netgit-fetch-with-cli
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to resolve address for mirrors.ustc.edu.cn: Temporary failure in name resolution; class=Net (12)
[ERROR] this task or one of its parent failed!
[ERROR] command failed: exit status: 101
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.