[INFO] fetching crate msiz_rustc-ap-graphviz 3.0.0...
[INFO] testing msiz_rustc-ap-graphviz-3.0.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate msiz_rustc-ap-graphviz 3.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate msiz_rustc-ap-graphviz 3.0.0
[INFO] finished tweaking crates.io crate msiz_rustc-ap-graphviz 3.0.0
[INFO] tweaked toml for crates.io crate msiz_rustc-ap-graphviz 3.0.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate msiz_rustc-ap-graphviz 3.0.0 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] 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b6bdaee8c645af1bb48a2f388d0cfd83a0aeab80dcf20ff09b3a0f11204104f1
[INFO] running `Command { std: "docker" "start" "-a" "b6bdaee8c645af1bb48a2f388d0cfd83a0aeab80dcf20ff09b3a0f11204104f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6bdaee8c645af1bb48a2f388d0cfd83a0aeab80dcf20ff09b3a0f11204104f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6bdaee8c645af1bb48a2f388d0cfd83a0aeab80dcf20ff09b3a0f11204104f1", kill_on_drop: false }`
[INFO] [stdout] b6bdaee8c645af1bb48a2f388d0cfd83a0aeab80dcf20ff09b3a0f11204104f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 1a5881e041b28d58310d13eed37ccff294e04923b6ecbb8493708b5e1caa652e
[INFO] running `Command { std: "docker" "start" "-a" "1a5881e041b28d58310d13eed37ccff294e04923b6ecbb8493708b5e1caa652e", kill_on_drop: false }`
[INFO] [stderr]    Compiling msiz_rustc-ap-graphviz v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> lib.rs:277:1
[INFO] [stdout]     |
[INFO] [stdout] 277 | #![feature(rustc_private, nll)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: the feature `nll` has been stable since `1.63.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `nll` has been stable since 1.63.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> lib.rs:277:27
[INFO] [stdout]     |
[INFO] [stdout] 277 | #![feature(rustc_private, nll)]
[INFO] [stdout]     |                           ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `msiz_rustc-ap-graphviz` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1a5881e041b28d58310d13eed37ccff294e04923b6ecbb8493708b5e1caa652e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a5881e041b28d58310d13eed37ccff294e04923b6ecbb8493708b5e1caa652e", kill_on_drop: false }`
[INFO] [stdout] 1a5881e041b28d58310d13eed37ccff294e04923b6ecbb8493708b5e1caa652e