[INFO] cloning repository https://github.com/cgaebel/cargo-tags
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cgaebel/cargo-tags" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcgaebel%2Fcargo-tags", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcgaebel%2Fcargo-tags'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc1776222ca22fbabea6495e807a0f37d4695744
[INFO] checking cgaebel/cargo-tags against master#8f359beca4e58bc3ae795a666301a8f47023044c for pr-121557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcgaebel%2Fcargo-tags" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cgaebel/cargo-tags on toolchain 8f359beca4e58bc3ae795a666301a8f47023044c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cgaebel/cargo-tags
[INFO] finished tweaking git repo https://github.com/cgaebel/cargo-tags
[INFO] tweaked toml for git repo https://github.com/cgaebel/cargo-tags written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cgaebel/cargo-tags 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" "+8f359beca4e58bc3ae795a666301a8f47023044c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/cargo`
[INFO] [stderr]     Updating git submodule `https://github.com/rust-lang/rust-installer.git`
[INFO] [stderr]     Updating git repository `https://github.com/carllerche/curl-rust`
[INFO] [stderr]     Updating git submodule `https://github.com/alexcrichton/curl`
[INFO] [stderr]     Updating git repository `https://github.com/docopt/docopt.rs`
[INFO] [stderr]     Updating git repository `https://github.com/alexcrichton/flate2-rs`
[INFO] [stderr]     Updating git repository `https://github.com/alexcrichton/git2-rs`
[INFO] [stderr]     Updating git submodule `https://github.com/alexcrichton/libgit2`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/glob`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/semver`
[INFO] [stderr]     Updating git repository `https://github.com/alexcrichton/tar-rs`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/time`
[INFO] [stderr]     Updating git repository `https://github.com/alexcrichton/toml-rs`
[INFO] [stderr] error: no matching package named `curl-sys` found
[INFO] [stderr] location searched: https://github.com/carllerche/curl-rust#8e8e2895
[INFO] [stderr] required by package `curl v0.1.0 (https://github.com/carllerche/curl-rust#8e8e2895)`
[INFO] [stderr]     ... which satisfies git dependency `curl` (locked to 0.1.0) of package `cargo v0.1.0 (https://github.com/rust-lang/cargo#5cb8d017)`
[INFO] [stderr]     ... which satisfies git dependency `cargo` (locked to 0.1.0) of package `cargo-tags v0.1.0 (/workspace/builds/worker-1-tc1/source)`
[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.