[INFO] cloning repository https://github.com/dog52841/OptimaCore
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dog52841/OptimaCore" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdog52841%2FOptimaCore", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdog52841%2FOptimaCore'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af389b092e082f507119d9c6d3b92a439827d287
[INFO] checking dog52841/OptimaCore against master#b52edc25bfbaa955b4b83c10f998e5224c3478b2 for pr-156776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdog52841%2FOptimaCore" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dog52841/OptimaCore
[INFO] finished tweaking git repo https://github.com/dog52841/OptimaCore
[INFO] tweaked toml for git repo https://github.com/dog52841/OptimaCore written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dog52841/OptimaCore on toolchain b52edc25bfbaa955b4b83c10f998e5224c3478b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b52edc25bfbaa955b4b83c10f998e5224c3478b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dog52841/OptimaCore 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" "+b52edc25bfbaa955b4b83c10f998e5224c3478b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `clang-sys`.
[INFO] [stderr]     ... required by package `bindgen v0.65.1`
[INFO] [stderr]     ... which satisfies dependency `bindgen = "^0.65"` of package `librocksdb-sys v0.11.0+8.1.1`
[INFO] [stderr]     ... which satisfies dependency `librocksdb-sys = "^0.11.0"` of package `rocksdb v0.21.0`
[INFO] [stderr]     ... which satisfies dependency `rocksdb = "^0.21"` of package `optimacore v0.1.0 (/workspace/builds/worker-4-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^1` are: 1.8.1, 1.8.0, 1.7.0, 1.6.1, 1.6.0, 1.4.0, 1.3.3, 1.3.2, 1.3.1, 1.3.0, 1.2.2, 1.2.1, 1.2.0, 1.1.1, 1.1.0, 1.0.3, 1.0.2, 1.0.1, 1.0.0
[INFO] [stderr] 
[INFO] [stderr] package `clang-sys` links to the native library `clang`, but it conflicts with a previous package which links to `clang` as well:
[INFO] [stderr] package `clang-sys v0.28.0`
[INFO] [stderr]     ... which satisfies dependency `clang-sys = "^0.28.0"` of package `bindgen v0.51.0`
[INFO] [stderr]     ... which satisfies dependency `bindgen = "^0.51.0"` of package `nvml-binding v0.1.0`
[INFO] [stderr]     ... which satisfies dependency `nvml-binding = "^0.1.0"` of package `nvml-rs v0.1.0`
[INFO] [stderr]     ... which satisfies dependency `nvml-rs = "^0.1.0"` of package `optimacore v0.1.0 (/workspace/builds/worker-4-tc1/source)`
[INFO] [stderr] note: only one package in the dependency graph may specify the same links value to ensure that only one copy of a native library is linked in the final binary
[INFO] [stderr] for more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links
[INFO] [stderr] help: try to adjust your dependencies so that only one package uses the `links = "clang"` value
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `clang-sys` 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 crates.io index
       error: failed to select a version for `clang-sys`.
           ... required by package `bindgen v0.65.1`
           ... which satisfies dependency `bindgen = "^0.65"` of package `librocksdb-sys v0.11.0+8.1.1`
           ... which satisfies dependency `librocksdb-sys = "^0.11.0"` of package `rocksdb v0.21.0`
           ... which satisfies dependency `rocksdb = "^0.21"` of package `optimacore v0.1.0 (/workspace/builds/worker-4-tc1/source)`
       versions that meet the requirements `^1` are: 1.8.1, 1.8.0, 1.7.0, 1.6.1, 1.6.0, 1.4.0, 1.3.3, 1.3.2, 1.3.1, 1.3.0, 1.2.2, 1.2.1, 1.2.0, 1.1.1, 1.1.0, 1.0.3, 1.0.2, 1.0.1, 1.0.0
       
       package `clang-sys` links to the native library `clang`, but it conflicts with a previous package which links to `clang` as well:
       package `clang-sys v0.28.0`
           ... which satisfies dependency `clang-sys = "^0.28.0"` of package `bindgen v0.51.0`
           ... which satisfies dependency `bindgen = "^0.51.0"` of package `nvml-binding v0.1.0`
           ... which satisfies dependency `nvml-binding = "^0.1.0"` of package `nvml-rs v0.1.0`
           ... which satisfies dependency `nvml-rs = "^0.1.0"` of package `optimacore v0.1.0 (/workspace/builds/worker-4-tc1/source)`
       note: only one package in the dependency graph may specify the same links value to ensure that only one copy of a native library is linked in the final binary
       for more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links
       help: try to adjust your dependencies so that only one package uses the `links = "clang"` value
       
       failed to select a version for `clang-sys` which could resolve this conflict