[INFO] cloning repository https://github.com/parallelno/v6_c
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/parallelno/v6_c" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparallelno%2Fv6_c", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparallelno%2Fv6_c'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3879bae802b6f30e6f81a60c0781bda7a43cab4b
[INFO] checking parallelno/v6_c against try#f4690f24e7d9bcb0b168a02b06dd61391e8bd55a for pr-157814-crater-rollup
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparallelno%2Fv6_c" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/parallelno/v6_c
[INFO] finished tweaking git repo https://github.com/parallelno/v6_c
[INFO] tweaked toml for git repo https://github.com/parallelno/v6_c written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/parallelno/v6_c on toolchain f4690f24e7d9bcb0b168a02b06dd61391e8bd55a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f4690f24e7d9bcb0b168a02b06dd61391e8bd55a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/parallelno/v6_c 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" "+f4690f24e7d9bcb0b168a02b06dd61391e8bd55a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4efefefbe3302f04f7f0e79356b476ae8e61dd01c16f7ece206048e4a98dbc68
[INFO] running `Command { std: "docker" "start" "4efefefbe3302f04f7f0e79356b476ae8e61dd01c16f7ece206048e4a98dbc68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4efefefbe3302f04f7f0e79356b476ae8e61dd01c16f7ece206048e4a98dbc68" "/opt/rustwide/cargo-home/bin/cargo" "+f4690f24e7d9bcb0b168a02b06dd61391e8bd55a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4efefefbe3302f04f7f0e79356b476ae8e61dd01c16f7ece206048e4a98dbc68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4efefefbe3302f04f7f0e79356b476ae8e61dd01c16f7ece206048e4a98dbc68" "/opt/rustwide/cargo-home/bin/cargo" "+f4690f24e7d9bcb0b168a02b06dd61391e8bd55a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling v6c v2026.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: target-based cfg should be avoided in build scripts
[INFO] [stdout]   --> build.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     if cfg!(target_os = "windows") {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use cargo environment variables if possible: `std::env::var("CARGO_CFG_TARGET_OS").unwrap_or_default() == "windows"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(misleading_cfg_in_build_script)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `v6c` (build script) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "4efefefbe3302f04f7f0e79356b476ae8e61dd01c16f7ece206048e4a98dbc68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4efefefbe3302f04f7f0e79356b476ae8e61dd01c16f7ece206048e4a98dbc68", kill_on_drop: false }`
[INFO] [stdout] 4efefefbe3302f04f7f0e79356b476ae8e61dd01c16f7ece206048e4a98dbc68
