[INFO] cloning repository https://github.com/eifert/cec-adapter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eifert/cec-adapter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feifert%2Fcec-adapter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feifert%2Fcec-adapter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 95ec3a682020d30a51a88ede777ed22a9ad2be23
[INFO] checking eifert/cec-adapter against master#cb40c25f6aebb637163d26bf76a680ed6e5d1eda for pr-156157-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feifert%2Fcec-adapter" "/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] started tweaking git repo https://github.com/eifert/cec-adapter
[INFO] finished tweaking git repo https://github.com/eifert/cec-adapter
[INFO] tweaked toml for git repo https://github.com/eifert/cec-adapter written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eifert/cec-adapter on toolchain cb40c25f6aebb637163d26bf76a680ed6e5d1eda
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/eifert/cec-adapter 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" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/rust-embedded-community/ssd1306.git`
[INFO] [stderr] error: failed to select a version for `az`.
[INFO] [stderr]     ... required by package `embedded-graphics v0.8.2`
[INFO] [stderr]     ... which satisfies dependency `embedded-graphics = "^0.8.2"` of package `cec-adapter v0.1.0 (/workspace/builds/worker-1-tc1/source)`
[INFO] [stderr] versions that meet the requirements `~1.2.0` are: 1.2.1, 1.2.0
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `az v1.3.0`
[INFO] [stderr]     ... which satisfies dependency `az = "^1.3"` of package `fixed v1.31.0`
[INFO] [stderr]     ... which satisfies dependency `fixed = "^1.31.0"` of package `cec-adapter v0.1.0 (/workspace/builds/worker-1-tc1/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `az` 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 git repository `https://github.com/rust-embedded-community/ssd1306.git`
       error: failed to select a version for `az`.
           ... required by package `embedded-graphics v0.8.2`
           ... which satisfies dependency `embedded-graphics = "^0.8.2"` of package `cec-adapter v0.1.0 (/workspace/builds/worker-1-tc1/source)`
       versions that meet the requirements `~1.2.0` are: 1.2.1, 1.2.0
       
       all possible versions conflict with previously selected packages
       
         previously selected package `az v1.3.0`
           ... which satisfies dependency `az = "^1.3"` of package `fixed v1.31.0`
           ... which satisfies dependency `fixed = "^1.31.0"` of package `cec-adapter v0.1.0 (/workspace/builds/worker-1-tc1/source)`
       
       failed to select a version for `az` which could resolve this conflict