[INFO] fetching crate piecrust-uplink 0.19.0-rc.0...
[INFO] testing piecrust-uplink-0.19.0-rc.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate piecrust-uplink 0.19.0-rc.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate piecrust-uplink 0.19.0-rc.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate piecrust-uplink 0.19.0-rc.0
[INFO] tweaked toml for crates.io crate piecrust-uplink 0.19.0-rc.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate piecrust-uplink 0.19.0-rc.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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 54 packages to latest compatible versions
[INFO] [stderr]       Adding bytecheck v0.6.12 (available: v0.8.2)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rkyv v0.7.45 (available: v0.8.12)
[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] 4f46e476dc6bb9104196ea3b99a5dc1aa806da953c1a5bdc2c59ec21758f6d89
[INFO] running `Command { std: "docker" "start" "-a" "4f46e476dc6bb9104196ea3b99a5dc1aa806da953c1a5bdc2c59ec21758f6d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f46e476dc6bb9104196ea3b99a5dc1aa806da953c1a5bdc2c59ec21758f6d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f46e476dc6bb9104196ea3b99a5dc1aa806da953c1a5bdc2c59ec21758f6d89", kill_on_drop: false }`
[INFO] [stdout] 4f46e476dc6bb9104196ea3b99a5dc1aa806da953c1a5bdc2c59ec21758f6d89
[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] 7789aada4e38e4c22110872193ef7e99801e70ccb96e41fc12003199a227d2eb
[INFO] running `Command { std: "docker" "start" "-a" "7789aada4e38e4c22110872193ef7e99801e70ccb96e41fc12003199a227d2eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytecheck v0.6.12
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling rend v0.4.2
[INFO] [stderr]    Compiling rkyv v0.7.45
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling ptr_meta_derive v0.1.4
[INFO] [stderr]    Compiling bytecheck_derive v0.6.12
[INFO] [stderr]    Compiling rkyv_derive v0.7.45
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling ptr_meta v0.1.4
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling piecrust-uplink v0.19.0-rc.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:63:1
[INFO] [stdout]    |
[INFO] [stdout] 63 | #![feature(lang_items)]
[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 `piecrust-uplink` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7789aada4e38e4c22110872193ef7e99801e70ccb96e41fc12003199a227d2eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7789aada4e38e4c22110872193ef7e99801e70ccb96e41fc12003199a227d2eb", kill_on_drop: false }`
[INFO] [stdout] 7789aada4e38e4c22110872193ef7e99801e70ccb96e41fc12003199a227d2eb
