[INFO] fetching crate char-list 0.2.1...
[INFO] testing char-list-0.2.1 against 1.76.0 for beta-1.77-1
[INFO] extracting crate char-list 0.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate char-list 0.2.1 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 char-list 0.2.1
[INFO] finished tweaking crates.io crate char-list 0.2.1
[INFO] tweaked toml for crates.io crate char-list 0.2.1 written to /workspace/builds/worker-2-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 embed-doc-image v0.1.4
[INFO] [stderr]   Downloaded assert2-macros v0.3.11
[INFO] [stderr]   Downloaded assert2 v0.3.11
[INFO] [stderr]   Downloaded front-vec v0.0.8
[INFO] [stderr]   Downloaded maybe-debug v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 175cc75ecf8353a604029f199772a98aa428c71cfad3e25d56458060bc2d0719
[INFO] running `Command { std: "docker" "start" "-a" "175cc75ecf8353a604029f199772a98aa428c71cfad3e25d56458060bc2d0719", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "175cc75ecf8353a604029f199772a98aa428c71cfad3e25d56458060bc2d0719", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "175cc75ecf8353a604029f199772a98aa428c71cfad3e25d56458060bc2d0719", kill_on_drop: false }`
[INFO] [stdout] 175cc75ecf8353a604029f199772a98aa428c71cfad3e25d56458060bc2d0719
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ec08930ffe59d7df2385abb9e85ab6ca4f00db03410f5203cf86f87d996b145d
[INFO] running `Command { std: "docker" "start" "-a" "ec08930ffe59d7df2385abb9e85ab6ca4f00db03410f5203cf86f87d996b145d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling front-vec v0.0.8
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/front-vec-0.0.8/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ptr_internals, maybe_uninit_slice)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/front-vec-0.0.8/src/lib.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ptr_internals, maybe_uninit_slice)]
[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 `front-vec` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ec08930ffe59d7df2385abb9e85ab6ca4f00db03410f5203cf86f87d996b145d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec08930ffe59d7df2385abb9e85ab6ca4f00db03410f5203cf86f87d996b145d", kill_on_drop: false }`
[INFO] [stdout] ec08930ffe59d7df2385abb9e85ab6ca4f00db03410f5203cf86f87d996b145d
[INFO] testing char-list-0.2.1 against beta-2024-02-10 for beta-1.77-1
[INFO] extracting crate char-list 0.2.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate char-list 0.2.1 on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate char-list 0.2.1
[INFO] finished tweaking crates.io crate char-list 0.2.1
[INFO] tweaked toml for crates.io crate char-list 0.2.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "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" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b80360bb66db1a767f4ce3733ab932850b78be9f2c1088f5f0daa2effc3a429
[INFO] running `Command { std: "docker" "start" "-a" "6b80360bb66db1a767f4ce3733ab932850b78be9f2c1088f5f0daa2effc3a429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b80360bb66db1a767f4ce3733ab932850b78be9f2c1088f5f0daa2effc3a429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b80360bb66db1a767f4ce3733ab932850b78be9f2c1088f5f0daa2effc3a429", kill_on_drop: false }`
[INFO] [stdout] 6b80360bb66db1a767f4ce3733ab932850b78be9f2c1088f5f0daa2effc3a429
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fb0ed1d19363d0da678b619fefa29dba6b8b0355cb4fdb526cbb7fded676a25
[INFO] running `Command { std: "docker" "start" "-a" "2fb0ed1d19363d0da678b619fefa29dba6b8b0355cb4fdb526cbb7fded676a25", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling front-vec v0.0.8
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/front-vec-0.0.8/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ptr_internals, maybe_uninit_slice)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/front-vec-0.0.8/src/lib.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ptr_internals, maybe_uninit_slice)]
[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 `front-vec` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2fb0ed1d19363d0da678b619fefa29dba6b8b0355cb4fdb526cbb7fded676a25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fb0ed1d19363d0da678b619fefa29dba6b8b0355cb4fdb526cbb7fded676a25", kill_on_drop: false }`
[INFO] [stdout] 2fb0ed1d19363d0da678b619fefa29dba6b8b0355cb4fdb526cbb7fded676a25
