[INFO] cloning repository https://github.com/mingyli/aoc2018
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mingyli/aoc2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmingyli%2Faoc2018", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmingyli%2Faoc2018'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8394743f59b28ed059fbdb2947bca36df3dab36b
[INFO] checking mingyli/aoc2018 against master#cb40c25f6aebb637163d26bf76a680ed6e5d1eda for pr-156157-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmingyli%2Faoc2018" "/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/mingyli/aoc2018
[INFO] finished tweaking git repo https://github.com/mingyli/aoc2018
[INFO] tweaked toml for git repo https://github.com/mingyli/aoc2018 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mingyli/aoc2018 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/mingyli/aoc2018 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `winapi`.
[INFO] [stderr]     ... required by package `page_size v0.6.0`
[INFO] [stderr]     ... which satisfies dependency `page_size = "^0.6.0"` of package `gear-dlmalloc v0.1.4`
[INFO] [stderr]     ... which satisfies dependency `dlmalloc = "^0.1.4"` of package `galloc v1.0.2`
[INFO] [stderr]     ... which satisfies dependency `galloc = "^1.0.2"` of package `gstd v1.0.2`
[INFO] [stderr]     ... which satisfies dependency `gstd = "^1"` of package `io v0.0.2`
[INFO] [stderr]     ... which satisfies dependency `io = "^0.0.2"` (locked to 0.0.2) of package `aoc2018 v0.1.0 (/workspace/builds/worker-6-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^0.3.9` are: 0.3.9
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `winapi v0.3.8`
[INFO] [stderr]     ... which satisfies dependency `winapi = "^0.3.0"` (locked to 0.3.8) of package `time v0.1.42`
[INFO] [stderr]     ... which satisfies dependency `time = "^0.1.39"` (locked to 0.1.42) of package `chrono v0.4.10`
[INFO] [stderr]     ... which satisfies dependency `chrono = "^0.4.10"` (locked to 0.4.10) of package `aoc2018 v0.1.0 (/workspace/builds/worker-6-tc1/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `winapi` 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
           Updating crates.io index
       error: failed to select a version for `winapi`.
           ... required by package `page_size v0.6.0`
           ... which satisfies dependency `page_size = "^0.6.0"` of package `gear-dlmalloc v0.1.4`
           ... which satisfies dependency `dlmalloc = "^0.1.4"` of package `galloc v1.0.2`
           ... which satisfies dependency `galloc = "^1.0.2"` of package `gstd v1.0.2`
           ... which satisfies dependency `gstd = "^1"` of package `io v0.0.2`
           ... which satisfies dependency `io = "^0.0.2"` (locked to 0.0.2) of package `aoc2018 v0.1.0 (/workspace/builds/worker-6-tc1/source)`
       versions that meet the requirements `^0.3.9` are: 0.3.9
       
       all possible versions conflict with previously selected packages
       
         previously selected package `winapi v0.3.8`
           ... which satisfies dependency `winapi = "^0.3.0"` (locked to 0.3.8) of package `time v0.1.42`
           ... which satisfies dependency `time = "^0.1.39"` (locked to 0.1.42) of package `chrono v0.4.10`
           ... which satisfies dependency `chrono = "^0.4.10"` (locked to 0.4.10) of package `aoc2018 v0.1.0 (/workspace/builds/worker-6-tc1/source)`
       
       failed to select a version for `winapi` which could resolve this conflict