[INFO] cloning repository https://github.com/dbr/imgui-software-renderer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dbr/imgui-software-renderer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdbr%2Fimgui-software-renderer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdbr%2Fimgui-software-renderer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a7a9b9acfeb7a93b8991ee557d96c8ef031b4237
[INFO] testing dbr/imgui-software-renderer against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdbr%2Fimgui-software-renderer" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dbr/imgui-software-renderer on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dbr/imgui-software-renderer
[INFO] finished tweaking git repo https://github.com/dbr/imgui-software-renderer
[INFO] tweaked toml for git repo https://github.com/dbr/imgui-software-renderer written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/dbr/imgui-software-renderer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f31e2565c7b220aa40b3e42d06daa4f4451a73ffece93a098f3dd4d45b17357a
[INFO] running `Command { std: "docker" "start" "-a" "f31e2565c7b220aa40b3e42d06daa4f4451a73ffece93a098f3dd4d45b17357a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f31e2565c7b220aa40b3e42d06daa4f4451a73ffece93a098f3dd4d45b17357a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f31e2565c7b220aa40b3e42d06daa4f4451a73ffece93a098f3dd4d45b17357a", kill_on_drop: false }`
[INFO] [stdout] f31e2565c7b220aa40b3e42d06daa4f4451a73ffece93a098f3dd4d45b17357a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 743ad5695a54e0b02971b7431b4e4c1b18def8d6b9e9bf5a954475d71d14d6a5
[INFO] running `Command { std: "docker" "start" "-a" "743ad5695a54e0b02971b7431b4e4c1b18def8d6b9e9bf5a954475d71d14d6a5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling chlorine v1.0.7
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling imgui-sys v0.7.0
[INFO] [stderr]    Compiling safe_arch v0.5.2
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling png v0.16.8
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling tiny-skia v0.5.1
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling imgui v0.7.0
[INFO] [stderr]    Compiling imgui-software-renderer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `col_p1`
[INFO] [stdout]   --> src/drawing.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     col_p1: [u8; 4],
[INFO] [stdout]    |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_col_p1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `col_p2`
[INFO] [stdout]   --> src/drawing.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     col_p2: [u8; 4],
[INFO] [stdout]    |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_col_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `counter` is assigned to, but never used
[INFO] [stdout]    --> src/drawing.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let mut counter = 0;
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_counter` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `imgui_software_renderer`
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider adding a `main` function to `src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `imgui-software-renderer` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "743ad5695a54e0b02971b7431b4e4c1b18def8d6b9e9bf5a954475d71d14d6a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "743ad5695a54e0b02971b7431b4e4c1b18def8d6b9e9bf5a954475d71d14d6a5", kill_on_drop: false }`
[INFO] [stdout] 743ad5695a54e0b02971b7431b4e4c1b18def8d6b9e9bf5a954475d71d14d6a5