[INFO] cloning repository https://github.com/knipknalted/Music-Player-J
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/knipknalted/Music-Player-J" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknipknalted%2FMusic-Player-J", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknipknalted%2FMusic-Player-J'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d16357e974b90fff235f6cef4fba283efb9bf30
[INFO] testing knipknalted/Music-Player-J against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknipknalted%2FMusic-Player-J" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/knipknalted/Music-Player-J
[INFO] finished tweaking git repo https://github.com/knipknalted/Music-Player-J
[INFO] tweaked toml for git repo https://github.com/knipknalted/Music-Player-J written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/knipknalted/Music-Player-J on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/knipknalted/Music-Player-J 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a2856846cbb52e072e70b2929cadc29f663699534b735de0ca3e436c1777068
[INFO] running `Command { std: "docker" "start" "-a" "1a2856846cbb52e072e70b2929cadc29f663699534b735de0ca3e436c1777068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a2856846cbb52e072e70b2929cadc29f663699534b735de0ca3e436c1777068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a2856846cbb52e072e70b2929cadc29f663699534b735de0ca3e436c1777068", kill_on_drop: false }`
[INFO] [stdout] 1a2856846cbb52e072e70b2929cadc29f663699534b735de0ca3e436c1777068
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38ae6212f1bd51ca4af4be6c8e1a6c02164d2db03124b2410eea32b625d391bc
[INFO] running `Command { std: "docker" "start" "-a" "38ae6212f1bd51ca4af4be6c8e1a6c02164d2db03124b2410eea32b625d391bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.131
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[INFO] [stderr]    Compiling parking_lot v0.11.2
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[INFO] [stderr]    Compiling alsa v0.6.0
[INFO] [stderr]    Compiling webbrowser v0.7.1
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[INFO] [stderr]    Compiling symphonia-bundle-mp3 v0.4.0
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[INFO] [stderr]    Compiling slice-deque v0.3.0
[INFO] [stderr]    Compiling glow v0.11.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling minimp3 v0.5.1
[INFO] [stderr]    Compiling image v0.24.4
[INFO] [stderr]    Compiling symphonia v0.4.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling directories-next v2.0.0
[INFO] [stderr]    Compiling lewton v0.10.2
[INFO] [stderr]    Compiling music_player_j v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `build_script_build`
[INFO] [stdout]  --> build.rs:9:2
[INFO] [stdout]   |
[INFO] [stdout] 9 | }
[INFO] [stdout]   |  ^ consider adding a `main` function to `build.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `music_player_j` (build script) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "38ae6212f1bd51ca4af4be6c8e1a6c02164d2db03124b2410eea32b625d391bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38ae6212f1bd51ca4af4be6c8e1a6c02164d2db03124b2410eea32b625d391bc", kill_on_drop: false }`
[INFO] [stdout] 38ae6212f1bd51ca4af4be6c8e1a6c02164d2db03124b2410eea32b625d391bc
