[INFO] cloning repository https://github.com/pppingfeng/ethers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pppingfeng/ethers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpppingfeng%2Fethers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpppingfeng%2Fethers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e907a9f41e996a4f70dcbc1be5fd47fba9fa867
[INFO] checking pppingfeng/ethers against master#4cf5f9580233c36f6bc8db76e282ba8a1c1ea491 for pr-154585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpppingfeng%2Fethers" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pppingfeng/ethers
[INFO] finished tweaking git repo https://github.com/pppingfeng/ethers
[INFO] tweaked toml for git repo https://github.com/pppingfeng/ethers written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pppingfeng/ethers on toolchain 4cf5f9580233c36f6bc8db76e282ba8a1c1ea491
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4cf5f9580233c36f6bc8db76e282ba8a1c1ea491" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pppingfeng/ethers 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" "+4cf5f9580233c36f6bc8db76e282ba8a1c1ea491" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `ethers`.
[INFO] [stderr]     ... required by package `ethereum_transaction v0.1.0 (/workspace/builds/worker-1-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^2` are: 2.0.14, 2.0.13, 2.0.11, 2.0.10, 2.0.9, 2.0.8, 2.0.7, 2.0.6, 2.0.4, 2.0.3, 2.0.2, 2.0.1, 2.0.0
[INFO] [stderr] 
[INFO] [stderr] package `ethereum_transaction` depends on `ethers` with feature `full` but `ethers` does not have that feature.
[INFO] [stderr]  package `ethers` does have feature `celo`
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `ethers` 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 `ethers`.
           ... required by package `ethereum_transaction v0.1.0 (/workspace/builds/worker-1-tc1/source)`
       versions that meet the requirements `^2` are: 2.0.14, 2.0.13, 2.0.11, 2.0.10, 2.0.9, 2.0.8, 2.0.7, 2.0.6, 2.0.4, 2.0.3, 2.0.2, 2.0.1, 2.0.0
       
       package `ethereum_transaction` depends on `ethers` with feature `full` but `ethers` does not have that feature.
        package `ethers` does have feature `celo`
       
       
       failed to select a version for `ethers` which could resolve this conflict