[INFO] fetching crate rem-utils 0.1.6...
[INFO] testing rem-utils-0.1.6 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate rem-utils 0.1.6 into /workspace/builds/worker-0-tc2/source
[INFO] removed /workspace/builds/worker-0-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate rem-utils 0.1.6
[INFO] finished tweaking crates.io crate rem-utils 0.1.6
[INFO] tweaked toml for crates.io crate rem-utils 0.1.6 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rem-utils 0.1.6 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 95 packages to latest compatible versions
[INFO] [stderr]       Adding nom v7.1.3 (available: v8.0.0)
[INFO] [stderr]       Adding string_cache v0.8.9 (available: v0.9.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.108)
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 530428571b881601a78130770a003a757e52952b8ce6fb5af86fad89d7ffbd0b
[INFO] running `Command { std: "docker" "start" "-a" "530428571b881601a78130770a003a757e52952b8ce6fb5af86fad89d7ffbd0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "530428571b881601a78130770a003a757e52952b8ce6fb5af86fad89d7ffbd0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "530428571b881601a78130770a003a757e52952b8ce6fb5af86fad89d7ffbd0b", kill_on_drop: false }`
[INFO] [stdout] 530428571b881601a78130770a003a757e52952b8ce6fb5af86fad89d7ffbd0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] d70bb63bd1b4fa6593c83ab49eb0f4f19653c7762fe38e89125b8e0df45ed2ba
[INFO] running `Command { std: "docker" "start" "-a" "d70bb63bd1b4fa6593c83ab49eb0f4f19653c7762fe38e89125b8e0df45ed2ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling typeid v1.0.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling foldhash v0.1.5
[INFO] [stderr]    Compiling erased-serde v0.4.8
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]    Compiling const-random-macro v0.1.16
[INFO] [stderr]    Compiling pest v2.8.3
[INFO] [stderr]    Compiling winnow v0.7.13
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling const-random v0.1.18
[INFO] [stderr]    Compiling dlv-list v0.5.2
[INFO] [stderr]    Compiling ordered-multimap v0.7.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling siphasher v1.0.1
[INFO] [stderr]    Compiling hashlink v0.10.0
[INFO] [stderr]    Compiling arraydeque v0.5.1
[INFO] [stderr]    Compiling convert_case v0.6.0
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling rust-ini v0.21.3
[INFO] [stderr]    Compiling yaml-rust2 v0.10.4
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling pathdiff v0.2.3
[INFO] [stderr]    Compiling pest_meta v2.8.3
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.6
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling ena v0.14.3
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling toml_parser v1.0.4
[INFO] [stderr]    Compiling home v0.5.12
[INFO] [stderr]    Compiling colored v3.0.0
[INFO] [stderr]    Compiling pest_generator v2.8.3
[INFO] [stderr]    Compiling serde_spanned v1.0.3
[INFO] [stderr]    Compiling toml_datetime v0.7.3
[INFO] [stderr]    Compiling bitflags v2.10.0
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling toml v0.9.8
[INFO] [stderr]    Compiling serde-untagged v0.1.9
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling pest_derive v2.8.3
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling ron v0.8.1
[INFO] [stderr]    Compiling json5 v0.4.1
[INFO] [stderr]    Compiling string_cache v0.8.9
[INFO] [stderr]    Compiling config v0.15.18
[INFO] [stderr]    Compiling rem-utils v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_patterns)]
[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(never_type)]
[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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(iter_intersperse)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rem-utils` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "d70bb63bd1b4fa6593c83ab49eb0f4f19653c7762fe38e89125b8e0df45ed2ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d70bb63bd1b4fa6593c83ab49eb0f4f19653c7762fe38e89125b8e0df45ed2ba", kill_on_drop: false }`
[INFO] [stdout] d70bb63bd1b4fa6593c83ab49eb0f4f19653c7762fe38e89125b8e0df45ed2ba