[INFO] cloning repository https://github.com/tomasdivito/gol-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomasdivito/gol-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomasdivito%2Fgol-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomasdivito%2Fgol-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 333059f0f872b905447d01342771554735a76737
[INFO] checking tomasdivito/gol-rs against master#8f359beca4e58bc3ae795a666301a8f47023044c for pr-121557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomasdivito%2Fgol-rs" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomasdivito/gol-rs on toolchain 8f359beca4e58bc3ae795a666301a8f47023044c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tomasdivito/gol-rs
[INFO] finished tweaking git repo https://github.com/tomasdivito/gol-rs
[INFO] tweaked toml for git repo https://github.com/tomasdivito/gol-rs written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tomasdivito/gol-rs 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" "+8f359beca4e58bc3ae795a666301a8f47023044c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/gtk-rs/gtk.git`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir.git`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir-files.git`
[INFO] [stderr]     Updating git repository `https://github.com/gtk-rs/atk`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir-files`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/gtk-rs/cairo`
[INFO] [stderr]     Updating git repository `https://github.com/gtk-rs/gdk`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir.git`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir-files.git`
[INFO] [stderr]     Updating git repository `https://github.com/gtk-rs/gdk-pixbuf`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir.git`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir-files.git`
[INFO] [stderr]     Updating git repository `https://github.com/gtk-rs/sys`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir-files`
[INFO] [stderr]     Updating git repository `https://github.com/gtk-rs/gio`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir.git`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir-files.git`
[INFO] [stderr]     Updating git repository `https://github.com/gtk-rs/glib`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir.git`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir-files.git`
[INFO] [stderr]     Updating git repository `https://github.com/gtk-rs/pango`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir.git`
[INFO] [stderr]     Updating git submodule `https://github.com/gtk-rs/gir-files.git`
[INFO] [stderr] error: failed to select a version for `libc`.
[INFO] [stderr]     ... required by package `freetype-sys v0.13.0`
[INFO] [stderr]     ... which satisfies dependency `freetype-sys = "^0.13.0"` of package `freetype v0.7.0`
[INFO] [stderr]     ... which satisfies dependency `freetype-crate = "^0.7.0"` of package `cairo-rs v0.9.0 (https://github.com/gtk-rs/cairo#7455304b)`
[INFO] [stderr]     ... which satisfies git dependency `cairo-rs` of package `gtk v0.9.0 (https://github.com/gtk-rs/gtk.git#59c38003)`
[INFO] [stderr]     ... which satisfies git dependency `gtk` of package `game_of_life v0.1.0 (/workspace/builds/worker-3-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^0.2.42` are: 0.2.153, 0.2.152, 0.2.151, 0.2.150, 0.2.149, 0.2.148, 0.2.147, 0.2.146, 0.2.144, 0.2.143, 0.2.142, 0.2.141, 0.2.140, 0.2.139, 0.2.138, 0.2.137, 0.2.136, 0.2.135, 0.2.134, 0.2.133, 0.2.132, 0.2.131, 0.2.129, 0.2.127, 0.2.126, 0.2.125, 0.2.124, 0.2.123, 0.2.122, 0.2.121, 0.2.120, 0.2.119, 0.2.118, 0.2.117, 0.2.116, 0.2.115, 0.2.114, 0.2.113, 0.2.112, 0.2.111, 0.2.109, 0.2.108, 0.2.107, 0.2.106, 0.2.105, 0.2.104, 0.2.103, 0.2.102, 0.2.101, 0.2.100, 0.2.99, 0.2.98, 0.2.97, 0.2.96, 0.2.95, 0.2.94, 0.2.93, 0.2.92, 0.2.91, 0.2.90, 0.2.89, 0.2.88, 0.2.87, 0.2.86, 0.2.85, 0.2.84, 0.2.83, 0.2.82, 0.2.81, 0.2.80, 0.2.79, 0.2.78, 0.2.77, 0.2.76, 0.2.75, 0.2.74, 0.2.73, 0.2.72, 0.2.71, 0.2.70, 0.2.69, 0.2.68, 0.2.67, 0.2.66, 0.2.65, 0.2.64, 0.2.62, 0.2.61, 0.2.60, 0.2.59, 0.2.58, 0.2.57, 0.2.56, 0.2.55, 0.2.54, 0.2.53, 0.2.51, 0.2.50, 0.2.49, 0.2.48, 0.2.47, 0.2.46, 0.2.45, 0.2.44, 0.2.43, 0.2.42
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `libc v0.2.30`
[INFO] [stderr]     ... which satisfies dependency `libc = "^0.2"` (locked to 0.2.30) of package `gtk v0.9.0 (https://github.com/gtk-rs/gtk.git#59c38003)`
[INFO] [stderr]     ... which satisfies git dependency `gtk` of package `game_of_life v0.1.0 (/workspace/builds/worker-3-tc1/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `libc` which could resolve this conflict
[ERROR] this task or one of its parent failed!
[ERROR] command failed: exit status: 101
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.