[INFO] fetching crate marker_lints 0.5.0...
[INFO] testing marker_lints-0.5.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate marker_lints 0.5.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate marker_lints 0.5.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate marker_lints 0.5.0
[INFO] tweaked toml for crates.io crate marker_lints 0.5.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate marker_lints 0.5.0 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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[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] ba7174474f925b35c0abda803761b5a069c0f0793940701f316483bac05d5128
[INFO] running `Command { std: "docker" "start" "-a" "ba7174474f925b35c0abda803761b5a069c0f0793940701f316483bac05d5128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba7174474f925b35c0abda803761b5a069c0f0793940701f316483bac05d5128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba7174474f925b35c0abda803761b5a069c0f0793940701f316483bac05d5128", kill_on_drop: false }`
[INFO] [stdout] ba7174474f925b35c0abda803761b5a069c0f0793940701f316483bac05d5128
[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] 2a518c920e5693e74e644e9e93ceb4feedc8d1830c8a92f4f24fdce40826bcd6
[INFO] running `Command { std: "docker" "start" "-a" "2a518c920e5693e74e644e9e93ceb4feedc8d1830c8a92f4f24fdce40826bcd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling marker_api v0.5.0
[INFO] [stderr]    Compiling marker_lints v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/diag_msg_uppercase_start.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     if let ExprKind::Method(call) = expr
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/diag_msg_uppercase_start.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |         && let sem::TyKind::Ref(adt_ref) = call.receiver().ty()
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/diag_msg_uppercase_start.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |         && let sem::TyKind::Adt(adt) = adt_ref.inner_ty()
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/diag_msg_uppercase_start.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |         && let [_lint, _id, msg, ..] = call.args()
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/diag_msg_uppercase_start.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 |     if let ExprKind::StrLit(lit) = msg_expr
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/diag_msg_uppercase_start.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |         && let Some(msg) = lit.str_value()
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/diag_msg_uppercase_start.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |         && let Some(start) = msg.chars().next()
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(let_chains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `let_chains` has been stable since `1.88.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(let_chains)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `marker_lints` (lib) due to 8 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "2a518c920e5693e74e644e9e93ceb4feedc8d1830c8a92f4f24fdce40826bcd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a518c920e5693e74e644e9e93ceb4feedc8d1830c8a92f4f24fdce40826bcd6", kill_on_drop: false }`
[INFO] [stdout] 2a518c920e5693e74e644e9e93ceb4feedc8d1830c8a92f4f24fdce40826bcd6
