[INFO] cloning repository https://github.com/xunfeiad/redog
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xunfeiad/redog" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxunfeiad%2Fredog", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxunfeiad%2Fredog'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 571cd6b81bd9bffa62a281a12adc2917cf083d48
[INFO] checking xunfeiad/redog against master#2972b5e59f1c5529b6ba770437812fd83ab4ebd4 for pr-154781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxunfeiad%2Fredog" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/xunfeiad/redog
[INFO] finished tweaking git repo https://github.com/xunfeiad/redog
[INFO] tweaked toml for git repo https://github.com/xunfeiad/redog written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/xunfeiad/redog on toolchain 2972b5e59f1c5529b6ba770437812fd83ab4ebd4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2972b5e59f1c5529b6ba770437812fd83ab4ebd4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/xunfeiad/redog 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" "+2972b5e59f1c5529b6ba770437812fd83ab4ebd4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `tokio-util`.
[INFO] [stderr]     ... required by package `redog-adapter v0.1.0 (/workspace/builds/worker-7-tc1/source/redog-adapter)`
[INFO] [stderr]     ... which satisfies path dependency `redog-adapter` (locked to 0.1.0) of package `redog v0.1.0 (/workspace/builds/worker-7-tc1/source/redog)`
[INFO] [stderr] versions that meet the requirements `^0.7` (locked to 0.7.18) are: 0.7.18
[INFO] [stderr] 
[INFO] [stderr] package `redog-adapter` depends on `tokio-util` with feature `sync` but `tokio-util` does not have that feature.
[INFO] [stderr] help: there is a feature `slab` with a similar name
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `tokio-util` 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 `tokio-util`.
           ... required by package `redog-adapter v0.1.0 (/workspace/builds/worker-7-tc1/source/redog-adapter)`
           ... which satisfies path dependency `redog-adapter` (locked to 0.1.0) of package `redog v0.1.0 (/workspace/builds/worker-7-tc1/source/redog)`
       versions that meet the requirements `^0.7` (locked to 0.7.18) are: 0.7.18
       
       package `redog-adapter` depends on `tokio-util` with feature `sync` but `tokio-util` does not have that feature.
       help: there is a feature `slab` with a similar name
       
       
       failed to select a version for `tokio-util` which could resolve this conflict