[INFO] cloning repository https://github.com/jianshu93/unifeb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jianshu93/unifeb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjianshu93%2Funifeb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjianshu93%2Funifeb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2dc56a857047c67cdb9c3f1f93a3f62edc4c3b2
[INFO] checking jianshu93/unifeb against master#03c609abb6638f9d7f49f34326d4137d07f5cd61 for pr-155945
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjianshu93%2Funifeb" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jianshu93/unifeb
[INFO] finished tweaking git repo https://github.com/jianshu93/unifeb
[INFO] tweaked toml for git repo https://github.com/jianshu93/unifeb written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jianshu93/unifeb on toolchain 03c609abb6638f9d7f49f34326d4137d07f5cd61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+03c609abb6638f9d7f49f34326d4137d07f5cd61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jianshu93/unifeb 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" "+03c609abb6638f9d7f49f34326d4137d07f5cd61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/jianshu93/anndists`
[INFO] [stderr]     Updating git repository `https://github.com/jianshu93/annembed`
[INFO] [stderr]     Updating git repository `https://github.com/jianshu93/hnswlib-rs`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `num_cpus`.
[INFO] [stderr]     ... required by package `annembed v0.1.5 (https://github.com/jianshu93/annembed#6327ee8d)`
[INFO] [stderr]     ... which satisfies git dependency `annembed` of package `unifeb v0.1.1 (/workspace/builds/worker-3-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^1.16` (locked to 1.16.0) are: 1.16.0
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `num_cpus v1.17.0`
[INFO] [stderr]     ... which satisfies dependency `num_cpus = "^1.17"` of package `anndists v0.1.4 (https://github.com/jianshu93/anndists#4a13ad20)`
[INFO] [stderr]     ... which satisfies git dependency `anndists` of package `unifeb v0.1.1 (/workspace/builds/worker-3-tc1/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `num_cpus` which could resolve this conflict


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: command failed: exit status: 101
       
           Updating git repository `https://github.com/jianshu93/anndists`
           Updating git repository `https://github.com/jianshu93/annembed`
           Updating git repository `https://github.com/jianshu93/hnswlib-rs`
           Updating crates.io index
           Updating crates.io index
       error: failed to select a version for `num_cpus`.
           ... required by package `annembed v0.1.5 (https://github.com/jianshu93/annembed#6327ee8d)`
           ... which satisfies git dependency `annembed` of package `unifeb v0.1.1 (/workspace/builds/worker-3-tc1/source)`
       versions that meet the requirements `^1.16` (locked to 1.16.0) are: 1.16.0
       
       all possible versions conflict with previously selected packages
       
         previously selected package `num_cpus v1.17.0`
           ... which satisfies dependency `num_cpus = "^1.17"` of package `anndists v0.1.4 (https://github.com/jianshu93/anndists#4a13ad20)`
           ... which satisfies git dependency `anndists` of package `unifeb v0.1.1 (/workspace/builds/worker-3-tc1/source)`
       
       failed to select a version for `num_cpus` which could resolve this conflict