[INFO] fetching crate piecrust-uplink 0.8.0...
[INFO] testing piecrust-uplink-0.8.0 against 1.76.0 for beta-1.77-1
[INFO] extracting crate piecrust-uplink 0.8.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate piecrust-uplink 0.8.0 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate piecrust-uplink 0.8.0
[INFO] finished tweaking crates.io crate piecrust-uplink 0.8.0
[INFO] tweaked toml for crates.io crate piecrust-uplink 0.8.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dlmalloc v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17cb17e5bb35938f754babe2cc0381a8b0ed107d7257057d213bbb8c326be2c2
[INFO] running `Command { std: "docker" "start" "-a" "17cb17e5bb35938f754babe2cc0381a8b0ed107d7257057d213bbb8c326be2c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17cb17e5bb35938f754babe2cc0381a8b0ed107d7257057d213bbb8c326be2c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17cb17e5bb35938f754babe2cc0381a8b0ed107d7257057d213bbb8c326be2c2", kill_on_drop: false }`
[INFO] [stdout] 17cb17e5bb35938f754babe2cc0381a8b0ed107d7257057d213bbb8c326be2c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 384a28d68f00ef8f9797cc2cabfeed12e8f343727d06f024b6ed7dcac40b8823
[INFO] running `Command { std: "docker" "start" "-a" "384a28d68f00ef8f9797cc2cabfeed12e8f343727d06f024b6ed7dcac40b8823", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling rkyv v0.7.44
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling bytecheck v0.6.12
[INFO] [stderr]    Compiling seahash v4.1.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling ptr_meta_derive v0.1.4
[INFO] [stderr]    Compiling rkyv_derive v0.7.44
[INFO] [stderr]    Compiling bytecheck_derive v0.6.12
[INFO] [stderr]    Compiling ptr_meta v0.1.4
[INFO] [stderr]    Compiling piecrust-uplink v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:63:1
[INFO] [stdout]    |
[INFO] [stdout] 63 | #![feature(lang_items, panic_info_message)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:63:24
[INFO] [stdout]    |
[INFO] [stdout] 63 | #![feature(lang_items, panic_info_message)]
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[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 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "384a28d68f00ef8f9797cc2cabfeed12e8f343727d06f024b6ed7dcac40b8823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "384a28d68f00ef8f9797cc2cabfeed12e8f343727d06f024b6ed7dcac40b8823", kill_on_drop: false }`
[INFO] [stdout] 384a28d68f00ef8f9797cc2cabfeed12e8f343727d06f024b6ed7dcac40b8823
