[INFO] fetching crate visualpanic-rs 0.1.2...
[INFO] testing visualpanic-rs-0.1.2 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate visualpanic-rs 0.1.2 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate visualpanic-rs 0.1.2
[INFO] finished tweaking crates.io crate visualpanic-rs 0.1.2
[INFO] tweaked toml for crates.io crate visualpanic-rs 0.1.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate visualpanic-rs 0.1.2 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 64 packages to latest compatible versions
[INFO] [stderr]       Adding native-dialog v0.7.0 (available: v0.9.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d612ef15f404a088c8d9465b752954cb4ba7f1f7b7f43195014b54bf1f1a416
[INFO] running `Command { std: "docker" "start" "-a" "9d612ef15f404a088c8d9465b752954cb4ba7f1f7b7f43195014b54bf1f1a416", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d612ef15f404a088c8d9465b752954cb4ba7f1f7b7f43195014b54bf1f1a416", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d612ef15f404a088c8d9465b752954cb4ba7f1f7b7f43195014b54bf1f1a416", kill_on_drop: false }`
[INFO] [stdout] 9d612ef15f404a088c8d9465b752954cb4ba7f1f7b7f43195014b54bf1f1a416
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5bd4299c3d55062d90f3cb8893abee9da438b5d61f39e04e00789740ad5b7f03
[INFO] running `Command { std: "docker" "start" "-a" "5bd4299c3d55062d90f3cb8893abee9da438b5d61f39e04e00789740ad5b7f03", kill_on_drop: false }`
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling bitflags v2.10.0
[INFO] [stderr]    Compiling home v0.5.12
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling ascii v1.1.0
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling versions v5.0.1
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling native-dialog v0.7.0
[INFO] [stderr]    Compiling visualpanic-rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | #![feature(panic_info_message)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `message` found for reference `&PanicHookInfo<'_>` in the current scope
[INFO] [stdout]    --> src/lib.rs:122:38
[INFO] [stdout]     |
[INFO] [stdout] 122 |             let message = panic_info.message().expect("Failed to extract message.").to_string();
[INFO] [stdout]     |                                      ^^^^^^^ method not found in `&PanicHookInfo<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `visualpanic-rs` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5bd4299c3d55062d90f3cb8893abee9da438b5d61f39e04e00789740ad5b7f03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bd4299c3d55062d90f3cb8893abee9da438b5d61f39e04e00789740ad5b7f03", kill_on_drop: false }`
[INFO] [stdout] 5bd4299c3d55062d90f3cb8893abee9da438b5d61f39e04e00789740ad5b7f03
