[INFO] cloning repository https://github.com/pheki/cargo-dependency-bug
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pheki/cargo-dependency-bug" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpheki%2Fcargo-dependency-bug", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpheki%2Fcargo-dependency-bug'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 82d02fd27f7b33fd073361f23dc1c52c49d70eab
[INFO] checking pheki/cargo-dependency-bug against try#3857be5045fe74bd0f296f6f4c23db10f8857f73 for pr-156807
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpheki%2Fcargo-dependency-bug" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pheki/cargo-dependency-bug
[INFO] finished tweaking git repo https://github.com/pheki/cargo-dependency-bug
[INFO] tweaked toml for git repo https://github.com/pheki/cargo-dependency-bug written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pheki/cargo-dependency-bug on toolchain 3857be5045fe74bd0f296f6f4c23db10f8857f73
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pheki/cargo-dependency-bug 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" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: failed to select a version for `once_cell`.
[INFO] [stderr]     ... required by package `tokio v1.9.0`
[INFO] [stderr]     ... which satisfies dependency `tokio = "^1.9"` (locked to 1.9.0) of package `cargo-bug v0.1.0 (/workspace/builds/worker-0-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.5.2` are: 1.21.4, 1.21.3, 1.21.2, 1.21.1, 1.21.0, 1.20.3, 1.20.2, 1.20.1, 1.19.0, 1.18.0, 1.17.2, 1.17.1, 1.17.0, 1.16.0, 1.15.0, 1.14.0, 1.13.1, 1.13.0, 1.12.1, 1.12.0, 1.11.0, 1.10.0, 1.9.0, 1.8.0, 1.7.2, 1.7.1, 1.7.0, 1.6.0, 1.5.2
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `once_cell v1.3.1`
[INFO] [stderr]     ... which satisfies dependency `once_cell = "^1.3.1"` (locked to 1.3.1) of package `cargo-bug v0.1.0 (/workspace/builds/worker-0-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `once_cell` which could resolve this conflict
[INFO] checking pheki/cargo-dependency-bug against try#3857be5045fe74bd0f296f6f4c23db10f8857f73 for pr-156807
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpheki%2Fcargo-dependency-bug" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pheki/cargo-dependency-bug
[INFO] finished tweaking git repo https://github.com/pheki/cargo-dependency-bug
[INFO] tweaked toml for git repo https://github.com/pheki/cargo-dependency-bug written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pheki/cargo-dependency-bug on toolchain 3857be5045fe74bd0f296f6f4c23db10f8857f73
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pheki/cargo-dependency-bug 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" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: failed to select a version for `once_cell`.
[INFO] [stderr]     ... required by package `tokio v1.9.0`
[INFO] [stderr]     ... which satisfies dependency `tokio = "^1.9"` (locked to 1.9.0) of package `cargo-bug v0.1.0 (/workspace/builds/worker-0-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.5.2` are: 1.21.4, 1.21.3, 1.21.2, 1.21.1, 1.21.0, 1.20.3, 1.20.2, 1.20.1, 1.19.0, 1.18.0, 1.17.2, 1.17.1, 1.17.0, 1.16.0, 1.15.0, 1.14.0, 1.13.1, 1.13.0, 1.12.1, 1.12.0, 1.11.0, 1.10.0, 1.9.0, 1.8.0, 1.7.2, 1.7.1, 1.7.0, 1.6.0, 1.5.2
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `once_cell v1.3.1`
[INFO] [stderr]     ... which satisfies dependency `once_cell = "^1.3.1"` (locked to 1.3.1) of package `cargo-bug v0.1.0 (/workspace/builds/worker-0-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `once_cell` which could resolve this conflict
[INFO] checking pheki/cargo-dependency-bug against try#3857be5045fe74bd0f296f6f4c23db10f8857f73 for pr-156807
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpheki%2Fcargo-dependency-bug" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pheki/cargo-dependency-bug
[INFO] finished tweaking git repo https://github.com/pheki/cargo-dependency-bug
[INFO] tweaked toml for git repo https://github.com/pheki/cargo-dependency-bug written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pheki/cargo-dependency-bug on toolchain 3857be5045fe74bd0f296f6f4c23db10f8857f73
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pheki/cargo-dependency-bug 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" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: failed to select a version for `once_cell`.
[INFO] [stderr]     ... required by package `tokio v1.9.0`
[INFO] [stderr]     ... which satisfies dependency `tokio = "^1.9"` (locked to 1.9.0) of package `cargo-bug v0.1.0 (/workspace/builds/worker-0-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.5.2` are: 1.21.4, 1.21.3, 1.21.2, 1.21.1, 1.21.0, 1.20.3, 1.20.2, 1.20.1, 1.19.0, 1.18.0, 1.17.2, 1.17.1, 1.17.0, 1.16.0, 1.15.0, 1.14.0, 1.13.1, 1.13.0, 1.12.1, 1.12.0, 1.11.0, 1.10.0, 1.9.0, 1.8.0, 1.7.2, 1.7.1, 1.7.0, 1.6.0, 1.5.2
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `once_cell v1.3.1`
[INFO] [stderr]     ... which satisfies dependency `once_cell = "^1.3.1"` (locked to 1.3.1) of package `cargo-bug v0.1.0 (/workspace/builds/worker-0-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `once_cell` which could resolve this conflict
[INFO] checking pheki/cargo-dependency-bug against try#3857be5045fe74bd0f296f6f4c23db10f8857f73 for pr-156807
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpheki%2Fcargo-dependency-bug" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pheki/cargo-dependency-bug
[INFO] finished tweaking git repo https://github.com/pheki/cargo-dependency-bug
[INFO] tweaked toml for git repo https://github.com/pheki/cargo-dependency-bug written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pheki/cargo-dependency-bug on toolchain 3857be5045fe74bd0f296f6f4c23db10f8857f73
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pheki/cargo-dependency-bug 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" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: failed to select a version for `once_cell`.
[INFO] [stderr]     ... required by package `tokio v1.9.0`
[INFO] [stderr]     ... which satisfies dependency `tokio = "^1.9"` (locked to 1.9.0) of package `cargo-bug v0.1.0 (/workspace/builds/worker-0-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.5.2` are: 1.21.4, 1.21.3, 1.21.2, 1.21.1, 1.21.0, 1.20.3, 1.20.2, 1.20.1, 1.19.0, 1.18.0, 1.17.2, 1.17.1, 1.17.0, 1.16.0, 1.15.0, 1.14.0, 1.13.1, 1.13.0, 1.12.1, 1.12.0, 1.11.0, 1.10.0, 1.9.0, 1.8.0, 1.7.2, 1.7.1, 1.7.0, 1.6.0, 1.5.2
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `once_cell v1.3.1`
[INFO] [stderr]     ... which satisfies dependency `once_cell = "^1.3.1"` (locked to 1.3.1) of package `cargo-bug v0.1.0 (/workspace/builds/worker-0-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `once_cell` which could resolve this conflict
[INFO] checking pheki/cargo-dependency-bug against try#3857be5045fe74bd0f296f6f4c23db10f8857f73 for pr-156807
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpheki%2Fcargo-dependency-bug" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pheki/cargo-dependency-bug
[INFO] finished tweaking git repo https://github.com/pheki/cargo-dependency-bug
[INFO] tweaked toml for git repo https://github.com/pheki/cargo-dependency-bug written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pheki/cargo-dependency-bug on toolchain 3857be5045fe74bd0f296f6f4c23db10f8857f73
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pheki/cargo-dependency-bug 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" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: failed to select a version for `once_cell`.
[INFO] [stderr]     ... required by package `tokio v1.9.0`
[INFO] [stderr]     ... which satisfies dependency `tokio = "^1.9"` (locked to 1.9.0) of package `cargo-bug v0.1.0 (/workspace/builds/worker-0-tc2/source)`
[INFO] [stderr] versions that meet the requirements `^1.5.2` are: 1.21.4, 1.21.3, 1.21.2, 1.21.1, 1.21.0, 1.20.3, 1.20.2, 1.20.1, 1.19.0, 1.18.0, 1.17.2, 1.17.1, 1.17.0, 1.16.0, 1.15.0, 1.14.0, 1.13.1, 1.13.0, 1.12.1, 1.12.0, 1.11.0, 1.10.0, 1.9.0, 1.8.0, 1.7.2, 1.7.1, 1.7.0, 1.6.0, 1.5.2
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `once_cell v1.3.1`
[INFO] [stderr]     ... which satisfies dependency `once_cell = "^1.3.1"` (locked to 1.3.1) of package `cargo-bug v0.1.0 (/workspace/builds/worker-0-tc2/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `once_cell` which could resolve this conflict


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: command failed: exit status: 101
       
           Blocking waiting for file lock on package cache
       error: failed to select a version for `once_cell`.
           ... required by package `tokio v1.9.0`
           ... which satisfies dependency `tokio = "^1.9"` (locked to 1.9.0) of package `cargo-bug v0.1.0 (/workspace/builds/worker-0-tc2/source)`
       versions that meet the requirements `^1.5.2` are: 1.21.4, 1.21.3, 1.21.2, 1.21.1, 1.21.0, 1.20.3, 1.20.2, 1.20.1, 1.19.0, 1.18.0, 1.17.2, 1.17.1, 1.17.0, 1.16.0, 1.15.0, 1.14.0, 1.13.1, 1.13.0, 1.12.1, 1.12.0, 1.11.0, 1.10.0, 1.9.0, 1.8.0, 1.7.2, 1.7.1, 1.7.0, 1.6.0, 1.5.2
       
       all possible versions conflict with previously selected packages
       
         previously selected package `once_cell v1.3.1`
           ... which satisfies dependency `once_cell = "^1.3.1"` (locked to 1.3.1) of package `cargo-bug v0.1.0 (/workspace/builds/worker-0-tc2/source)`
       
       failed to select a version for `once_cell` which could resolve this conflict