[INFO] cloning repository https://github.com/colinrozzi/rust-mcp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/colinrozzi/rust-mcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolinrozzi%2Frust-mcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolinrozzi%2Frust-mcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eddd122df95c7d62ad95ceccefbe208fc91e390c
[INFO] checking colinrozzi/rust-mcp against master#3645249d79dfb136b5d8de3ce153d19d6698d92d for pr-153975
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolinrozzi%2Frust-mcp" "/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/colinrozzi/rust-mcp
[INFO] finished tweaking git repo https://github.com/colinrozzi/rust-mcp
[INFO] tweaked toml for git repo https://github.com/colinrozzi/rust-mcp written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/colinrozzi/rust-mcp 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/colinrozzi/rust-mcp 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 `mcp-protocol`.
[INFO] [stderr]     ... required by package `modelcontextprotocol-server v0.1.4 (/workspace/builds/worker-3-tc1/source/mcp-server)`
[INFO] [stderr]     ... which satisfies path dependency `modelcontextprotocol-server` of package `completion-server v0.1.0 (/workspace/builds/worker-3-tc1/source/examples/completion-server)`
[INFO] [stderr] versions that meet the requirements `^0.2.6` are: 0.2.7, 0.2.6
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `mcp-protocol v0.2.5`
[INFO] [stderr]     ... which satisfies dependency `mcp-protocol = "^0.2.5"` (locked to 0.2.5) of package `modelcontextprotocol-client v0.1.2 (/workspace/builds/worker-3-tc1/source/mcp-client)`
[INFO] [stderr]     ... which satisfies path dependency `modelcontextprotocol-client` (locked to 0.1.2) of package `completion-client v0.1.0 (/workspace/builds/worker-3-tc1/source/examples/completion-client)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `mcp-protocol` 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 `mcp-protocol`.
           ... required by package `modelcontextprotocol-server v0.1.4 (/workspace/builds/worker-3-tc1/source/mcp-server)`
           ... which satisfies path dependency `modelcontextprotocol-server` of package `completion-server v0.1.0 (/workspace/builds/worker-3-tc1/source/examples/completion-server)`
       versions that meet the requirements `^0.2.6` are: 0.2.7, 0.2.6
       
       all possible versions conflict with previously selected packages.
       
         previously selected package `mcp-protocol v0.2.5`
           ... which satisfies dependency `mcp-protocol = "^0.2.5"` (locked to 0.2.5) of package `modelcontextprotocol-client v0.1.2 (/workspace/builds/worker-3-tc1/source/mcp-client)`
           ... which satisfies path dependency `modelcontextprotocol-client` (locked to 0.1.2) of package `completion-client v0.1.0 (/workspace/builds/worker-3-tc1/source/examples/completion-client)`
       
       failed to select a version for `mcp-protocol` which could resolve this conflict