[INFO] cloning repository https://github.com/s5bug/unnamedracinggame
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/s5bug/unnamedracinggame" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fs5bug%2Funnamedracinggame", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fs5bug%2Funnamedracinggame'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae0e6b11b0923e93ad90e98bba5c0affe9d42765
[INFO] checking s5bug/unnamedracinggame against master#3645249d79dfb136b5d8de3ce153d19d6698d92d for pr-153975
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fs5bug%2Funnamedracinggame" "/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/s5bug/unnamedracinggame
[INFO] finished tweaking git repo https://github.com/s5bug/unnamedracinggame
[INFO] tweaked toml for git repo https://github.com/s5bug/unnamedracinggame written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/s5bug/unnamedracinggame 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/s5bug/unnamedracinggame 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `servo-freetype-sys`.
[INFO] [stderr]     ... required by package `freetype v0.4.1`
[INFO] [stderr]     ... which satisfies dependency `freetype = "^0.4"` (locked to 0.4.1) of package `harfbuzz-sys v0.3.4`
[INFO] [stderr]     ... which satisfies dependency `harfbuzz-sys = ">=0.3, <0.5"` (locked to 0.3.4) of package `harfbuzz_rs v1.2.0`
[INFO] [stderr]     ... which satisfies dependency `harfbuzz_rs = "^1.2.0"` (locked to 1.2.0) of package `unnamedracinggame v0.1.0 (/workspace/builds/worker-4-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^4.0.2` (locked to 4.0.3) are: 4.0.3
[INFO] [stderr] 
[INFO] [stderr] package `servo-freetype-sys` links to the native library `freetype`, but it conflicts with a previous package which links to `freetype` as well:
[INFO] [stderr] package `freetype-sys v0.14.0`
[INFO] [stderr]     ... which satisfies dependency `freetype-sys = "^0.14.0"` (locked to 0.14.0) of package `freetype-rs v0.27.0`
[INFO] [stderr]     ... which satisfies dependency `freetype-rs = "^0.27.0"` (locked to 0.27.0) of package `unnamedracinggame v0.1.0 (/workspace/builds/worker-4-tc1/source)`
[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 = "freetype"` 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 `servo-freetype-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
       
           Blocking waiting for file lock on package cache
           Updating crates.io index
       error: failed to select a version for `servo-freetype-sys`.
           ... required by package `freetype v0.4.1`
           ... which satisfies dependency `freetype = "^0.4"` (locked to 0.4.1) of package `harfbuzz-sys v0.3.4`
           ... which satisfies dependency `harfbuzz-sys = ">=0.3, <0.5"` (locked to 0.3.4) of package `harfbuzz_rs v1.2.0`
           ... which satisfies dependency `harfbuzz_rs = "^1.2.0"` (locked to 1.2.0) of package `unnamedracinggame v0.1.0 (/workspace/builds/worker-4-tc1/source)`
       versions that meet the requirements `^4.0.2` (locked to 4.0.3) are: 4.0.3
       
       package `servo-freetype-sys` links to the native library `freetype`, but it conflicts with a previous package which links to `freetype` as well:
       package `freetype-sys v0.14.0`
           ... which satisfies dependency `freetype-sys = "^0.14.0"` (locked to 0.14.0) of package `freetype-rs v0.27.0`
           ... which satisfies dependency `freetype-rs = "^0.27.0"` (locked to 0.27.0) of package `unnamedracinggame v0.1.0 (/workspace/builds/worker-4-tc1/source)`
       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 = "freetype"` value. For more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links.
       
       failed to select a version for `servo-freetype-sys` which could resolve this conflict