[INFO] cloning repository https://github.com/ahhhh6980/Mosaic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ahhhh6980/Mosaic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahhhh6980%2FMosaic", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahhhh6980%2FMosaic'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a1b0f06f46180f6ab1624a87d75791d5293bcf60
[INFO] checking ahhhh6980/Mosaic against master#31a9463c6e2794a59ce57a8f37abc6966afc2a58 for pr-149045
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahhhh6980%2FMosaic" "/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/ahhhh6980/Mosaic
[INFO] finished tweaking git repo https://github.com/ahhhh6980/Mosaic
[INFO] tweaked toml for git repo https://github.com/ahhhh6980/Mosaic written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ahhhh6980/Mosaic on toolchain 31a9463c6e2794a59ce57a8f37abc6966afc2a58
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+31a9463c6e2794a59ce57a8f37abc6966afc2a58" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ahhhh6980/Mosaic 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" "+31a9463c6e2794a59ce57a8f37abc6966afc2a58" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `cfg-if`.
[INFO] [stderr]     ... required by package `thread-services v0.1.0`
[INFO] [stderr]     ... which satisfies dependency `thread-services = "^0.1.0"` of package `thread v0.1.0`
[INFO] [stderr]     ... which satisfies dependency `thread = "^0.1.0"` (locked to 0.1.0) of package `mosaic v0.1.0 (/workspace/builds/worker-1-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.4` are: 1.0.4
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `cfg-if v1.0.0`
[INFO] [stderr]     ... which satisfies dependency `cfg-if = "^1"` (locked to 1.0.0) of package `crossbeam-deque v0.8.1`
[INFO] [stderr]     ... which satisfies dependency `crossbeam-deque = "^0.8.0"` (locked to 0.8.1) of package `rayon v1.5.1`
[INFO] [stderr]     ... which satisfies dependency `rayon = "^1.5.1"` (locked to 1.5.1) of package `mosaic v0.1.0 (/workspace/builds/worker-1-tc1/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `cfg-if` 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 `cfg-if`.
           ... required by package `thread-services v0.1.0`
           ... which satisfies dependency `thread-services = "^0.1.0"` of package `thread v0.1.0`
           ... which satisfies dependency `thread = "^0.1.0"` (locked to 0.1.0) of package `mosaic v0.1.0 (/workspace/builds/worker-1-tc1/source)`
       versions that meet the requirements `^1.0.4` are: 1.0.4
       
       all possible versions conflict with previously selected packages
       
         previously selected package `cfg-if v1.0.0`
           ... which satisfies dependency `cfg-if = "^1"` (locked to 1.0.0) of package `crossbeam-deque v0.8.1`
           ... which satisfies dependency `crossbeam-deque = "^0.8.0"` (locked to 0.8.1) of package `rayon v1.5.1`
           ... which satisfies dependency `rayon = "^1.5.1"` (locked to 1.5.1) of package `mosaic v0.1.0 (/workspace/builds/worker-1-tc1/source)`
       
       failed to select a version for `cfg-if` which could resolve this conflict