[INFO] cloning repository https://github.com/matklad/mandelbrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matklad/mandelbrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fmandelbrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fmandelbrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b373a6009a4878ebdfc1e85b6a43e9150c40140e
[INFO] checking matklad/mandelbrot against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fmandelbrot" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/mandelbrot on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matklad/mandelbrot
[INFO] finished tweaking git repo https://github.com/matklad/mandelbrot
[INFO] tweaked toml for git repo https://github.com/matklad/mandelbrot written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/mandelbrot 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" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git submodule `https://github.com/Extrawurst/cimgui.git`
[INFO] [stderr]     Updating git submodule `https://github.com/ocornut/imgui.git`
[INFO] [stderr] error: failed to select a version for the requirement `imgui-sys = "^0.0.5"`
[INFO] [stderr] candidate versions found which didn't match: 0.0.5-pre
[INFO] [stderr] location searched: Git repository https://github.com/Gekkio/imgui-rs#c4a3605f
[INFO] [stderr] required by package `imgui v0.0.5-pre (https://github.com/Gekkio/imgui-rs#c4a3605f)`
[INFO] [stderr]     ... which satisfies git dependency `imgui` (locked to 0.0.5-pre) of package `mandelbrot v0.1.0 (/workspace/builds/worker-2-tc1/source)`
[INFO] [stderr] if you are looking for the prerelease package it needs to be specified explicitly
[INFO] [stderr]     imgui-sys = { version = "0.0.5-pre" }
[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.
[INFO] checking matklad/mandelbrot against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fmandelbrot" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/mandelbrot on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matklad/mandelbrot
[INFO] finished tweaking git repo https://github.com/matklad/mandelbrot
[INFO] tweaked toml for git repo https://github.com/matklad/mandelbrot written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/mandelbrot 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: failed to select a version for the requirement `imgui-sys = "^0.0.5"`
[INFO] [stderr] candidate versions found which didn't match: 0.0.5-pre
[INFO] [stderr] location searched: Git repository https://github.com/Gekkio/imgui-rs#c4a3605f
[INFO] [stderr] required by package `imgui v0.0.5-pre (https://github.com/Gekkio/imgui-rs#c4a3605f)`
[INFO] [stderr]     ... which satisfies git dependency `imgui` (locked to 0.0.5-pre) of package `mandelbrot v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] if you are looking for the prerelease package it needs to be specified explicitly
[INFO] [stderr]     imgui-sys = { version = "0.0.5-pre" }
[INFO] checking matklad/mandelbrot against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fmandelbrot" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/mandelbrot on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matklad/mandelbrot
[INFO] finished tweaking git repo https://github.com/matklad/mandelbrot
[INFO] tweaked toml for git repo https://github.com/matklad/mandelbrot written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/mandelbrot 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: failed to select a version for the requirement `imgui-sys = "^0.0.5"`
[INFO] [stderr] candidate versions found which didn't match: 0.0.5-pre
[INFO] [stderr] location searched: Git repository https://github.com/Gekkio/imgui-rs#c4a3605f
[INFO] [stderr] required by package `imgui v0.0.5-pre (https://github.com/Gekkio/imgui-rs#c4a3605f)`
[INFO] [stderr]     ... which satisfies git dependency `imgui` (locked to 0.0.5-pre) of package `mandelbrot v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] if you are looking for the prerelease package it needs to be specified explicitly
[INFO] [stderr]     imgui-sys = { version = "0.0.5-pre" }
[INFO] checking matklad/mandelbrot against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fmandelbrot" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/mandelbrot on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matklad/mandelbrot
[INFO] finished tweaking git repo https://github.com/matklad/mandelbrot
[INFO] tweaked toml for git repo https://github.com/matklad/mandelbrot written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/mandelbrot 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: failed to select a version for the requirement `imgui-sys = "^0.0.5"`
[INFO] [stderr] candidate versions found which didn't match: 0.0.5-pre
[INFO] [stderr] location searched: Git repository https://github.com/Gekkio/imgui-rs#c4a3605f
[INFO] [stderr] required by package `imgui v0.0.5-pre (https://github.com/Gekkio/imgui-rs#c4a3605f)`
[INFO] [stderr]     ... which satisfies git dependency `imgui` (locked to 0.0.5-pre) of package `mandelbrot v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] if you are looking for the prerelease package it needs to be specified explicitly
[INFO] [stderr]     imgui-sys = { version = "0.0.5-pre" }
[INFO] checking matklad/mandelbrot against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fmandelbrot" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/mandelbrot on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matklad/mandelbrot
[INFO] finished tweaking git repo https://github.com/matklad/mandelbrot
[INFO] tweaked toml for git repo https://github.com/matklad/mandelbrot written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/mandelbrot 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: failed to select a version for the requirement `imgui-sys = "^0.0.5"`
[INFO] [stderr] candidate versions found which didn't match: 0.0.5-pre
[INFO] [stderr] location searched: Git repository https://github.com/Gekkio/imgui-rs#c4a3605f
[INFO] [stderr] required by package `imgui v0.0.5-pre (https://github.com/Gekkio/imgui-rs#c4a3605f)`
[INFO] [stderr]     ... which satisfies git dependency `imgui` (locked to 0.0.5-pre) of package `mandelbrot v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] if you are looking for the prerelease package it needs to be specified explicitly
[INFO] [stderr]     imgui-sys = { version = "0.0.5-pre" }
[INFO] checking matklad/mandelbrot against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fmandelbrot" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/mandelbrot on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matklad/mandelbrot
[INFO] finished tweaking git repo https://github.com/matklad/mandelbrot
[INFO] tweaked toml for git repo https://github.com/matklad/mandelbrot written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/mandelbrot 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: failed to select a version for the requirement `imgui-sys = "^0.0.5"`
[INFO] [stderr] candidate versions found which didn't match: 0.0.5-pre
[INFO] [stderr] location searched: Git repository https://github.com/Gekkio/imgui-rs#c4a3605f
[INFO] [stderr] required by package `imgui v0.0.5-pre (https://github.com/Gekkio/imgui-rs#c4a3605f)`
[INFO] [stderr]     ... which satisfies git dependency `imgui` (locked to 0.0.5-pre) of package `mandelbrot v0.1.0 (/workspace/builds/worker-2-tc2/source)`
[INFO] [stderr] if you are looking for the prerelease package it needs to be specified explicitly
[INFO] [stderr]     imgui-sys = { version = "0.0.5-pre" }
[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.
