[INFO] cloning repository https://github.com/yshui/xr_passthrough_layer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yshui/xr_passthrough_layer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyshui%2Fxr_passthrough_layer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyshui%2Fxr_passthrough_layer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dfa8de0dc811ed9b73e7763bec3655ef5b33dea0
[INFO] checking yshui/xr_passthrough_layer against master#3645249d79dfb136b5d8de3ce153d19d6698d92d for pr-153975
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyshui%2Fxr_passthrough_layer" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-1-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-1-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/yshui/xr_passthrough_layer
[INFO] finished tweaking git repo https://github.com/yshui/xr_passthrough_layer
[INFO] tweaked toml for git repo https://github.com/yshui/xr_passthrough_layer written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yshui/xr_passthrough_layer on toolchain 3645249d79dfb136b5d8de3ce153d19d6698d92d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3645249d79dfb136b5d8de3ce153d19d6698d92d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yshui/xr_passthrough_layer 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" "+3645249d79dfb136b5d8de3ce153d19d6698d92d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `shaderc-sys`.
[INFO] [stderr]     ... required by package `shaderc v0.8.3`
[INFO] [stderr]     ... which satisfies dependency `shaderc = "^0.8.3"` of package `vulkano-shaders v0.35.0`
[INFO] [stderr]     ... which satisfies dependency `vulkano-shaders = "^0.35"` of package `hello v0.1.0 (/workspace/builds/worker-1-tc1/source/hello)`
[INFO] [stderr] versions that meet the requirements `^0.8.3` are: 0.8.3
[INFO] [stderr] 
[INFO] [stderr] package `shaderc-sys` links to the native library `shaderc`, but it conflicts with a previous package which links to `shaderc` as well:
[INFO] [stderr] package `shaderc-sys v0.10.1`
[INFO] [stderr]     ... which satisfies dependency `shaderc-sys = "^0.10.1"` (locked to 0.10.1) of package `shaderc v0.10.1`
[INFO] [stderr]     ... which satisfies dependency `shaderc = "^0.10"` (locked to 0.10.1) of package `hello v0.1.0 (/workspace/builds/worker-1-tc1/source/hello)`
[INFO] [stderr] Only one package in the dependency graph may specify the same links value. This helps ensure that only one copy of a native library is linked in the final binary. Try to adjust your dependencies so that only one package uses the `links = "shaderc"` value. For more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links.
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `shaderc-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
           Updating crates.io index
       error: failed to select a version for `shaderc-sys`.
           ... required by package `shaderc v0.8.3`
           ... which satisfies dependency `shaderc = "^0.8.3"` of package `vulkano-shaders v0.35.0`
           ... which satisfies dependency `vulkano-shaders = "^0.35"` of package `hello v0.1.0 (/workspace/builds/worker-1-tc1/source/hello)`
       versions that meet the requirements `^0.8.3` are: 0.8.3
       
       package `shaderc-sys` links to the native library `shaderc`, but it conflicts with a previous package which links to `shaderc` as well:
       package `shaderc-sys v0.10.1`
           ... which satisfies dependency `shaderc-sys = "^0.10.1"` (locked to 0.10.1) of package `shaderc v0.10.1`
           ... which satisfies dependency `shaderc = "^0.10"` (locked to 0.10.1) of package `hello v0.1.0 (/workspace/builds/worker-1-tc1/source/hello)`
       Only one package in the dependency graph may specify the same links value. This helps ensure that only one copy of a native library is linked in the final binary. Try to adjust your dependencies so that only one package uses the `links = "shaderc"` value. For more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links.
       
       failed to select a version for `shaderc-sys` which could resolve this conflict