[INFO] cloning repository https://github.com/jubako/python-arx
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jubako/python-arx" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjubako%2Fpython-arx", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjubako%2Fpython-arx'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4665fdba6c5da467e5bfb925949c8fa8304c7aae
[INFO] checking jubako/python-arx against master#2aabf3ce0569dd7c8c2d2a27944850056dcf2566 for pr-156508
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjubako%2Fpython-arx" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jubako/python-arx
[INFO] finished tweaking git repo https://github.com/jubako/python-arx
[INFO] tweaked toml for git repo https://github.com/jubako/python-arx written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jubako/python-arx on toolchain 2aabf3ce0569dd7c8c2d2a27944850056dcf2566
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2aabf3ce0569dd7c8c2d2a27944850056dcf2566" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jubako/python-arx 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" "+2aabf3ce0569dd7c8c2d2a27944850056dcf2566" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/jubako/arx.git`
[INFO] [stderr]     Updating git repository `https://github.com/jubako/jubako.git`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `rayon`.
[INFO] [stderr]     ... required by package `libarx v0.4.1 (https://github.com/jubako/arx.git#1eb4c376)`
[INFO] [stderr]     ... which satisfies git dependency `arx` of package `pyarx v0.1.0 (/workspace/builds/worker-6-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^1.10.0` are: 1.12.0, 1.11.0, 1.10.0
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `rayon v1.8.0`
[INFO] [stderr]     ... which satisfies dependency `rayon = "^1.8.0"` (locked to 1.8.0) of package `jubako v0.5.0-dev (https://github.com/jubako/jubako.git#2aa59e18)`
[INFO] [stderr]     ... which satisfies git dependency `jbk` of package `pyarx v0.1.0 (/workspace/builds/worker-6-tc1/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `rayon` 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 git repository `https://github.com/jubako/arx.git`
           Updating git repository `https://github.com/jubako/jubako.git`
           Updating crates.io index
       error: failed to select a version for `rayon`.
           ... required by package `libarx v0.4.1 (https://github.com/jubako/arx.git#1eb4c376)`
           ... which satisfies git dependency `arx` of package `pyarx v0.1.0 (/workspace/builds/worker-6-tc1/source)`
       versions that meet the requirements `^1.10.0` are: 1.12.0, 1.11.0, 1.10.0
       
       all possible versions conflict with previously selected packages
       
         previously selected package `rayon v1.8.0`
           ... which satisfies dependency `rayon = "^1.8.0"` (locked to 1.8.0) of package `jubako v0.5.0-dev (https://github.com/jubako/jubako.git#2aa59e18)`
           ... which satisfies git dependency `jbk` of package `pyarx v0.1.0 (/workspace/builds/worker-6-tc1/source)`
       
       failed to select a version for `rayon` which could resolve this conflict