[INFO] cloning repository https://github.com/zhengminlai/core-decomposition
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zhengminlai/core-decomposition" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhengminlai%2Fcore-decomposition", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhengminlai%2Fcore-decomposition'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 79dd8ee0bbb0b3d2040542dc808580bef18d6e8a
[INFO] checking zhengminlai/core-decomposition against master#accc516128b21e960b1a7af45393e9acdd184890 for pr-122501
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhengminlai%2Fcore-decomposition" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zhengminlai/core-decomposition on toolchain accc516128b21e960b1a7af45393e9acdd184890
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+accc516128b21e960b1a7af45393e9acdd184890" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zhengminlai/core-decomposition
[INFO] finished tweaking git repo https://github.com/zhengminlai/core-decomposition
[INFO] tweaked toml for git repo https://github.com/zhengminlai/core-decomposition written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/zhengminlai/core-decomposition 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" "+accc516128b21e960b1a7af45393e9acdd184890" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `ssh://git@github.com/UNSW-database/rust_graph_lib.git`
[INFO] [stderr] error: failed to get `rust_graph` as a dependency of package `core_decomposition v0.1.0 (/workspace/builds/worker-2-tc1/source)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to load source for dependency `rust_graph`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update ssh://git@github.com/UNSW-database/rust_graph_lib.git?branch=fix_2018#a698d610
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to clone into: /workspace/cargo-home/git/db/rust_graph_lib-3ca16f6ba4cf78fa
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to authenticate when downloading repository
[INFO] [stderr] 
[INFO] [stderr]   * attempted ssh-agent authentication, but no usernames succeeded: `git`
[INFO] [stderr] 
[INFO] [stderr]   if the git CLI succeeds then `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]   no authentication methods succeeded
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to broken:missing-deps
[ERROR] caused by: the crate depends on missing dependencies
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.