[INFO] fetching crate oak-python 0.0.11...
[INFO] testing oak-python-0.0.11 against 1.95.0 for beta-1.96-2
[INFO] extracting crate oak-python 0.0.11 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate oak-python 0.0.11
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate oak-python 0.0.11
[INFO] tweaked toml for crates.io crate oak-python 0.0.11 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate oak-python 0.0.11 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate oak-python 0.0.11 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded oak-vfs v0.0.11
[INFO] [stderr]   Downloaded oak-semantic-search v0.0.11
[INFO] [stderr]   Downloaded oak-lsp v0.0.11
[INFO] [stderr]   Downloaded oak-hover v0.0.11
[INFO] [stderr]   Downloaded oak-resolver v0.0.11
[INFO] [stderr]   Downloaded oak-highlight v0.0.11
[INFO] [stderr]   Downloaded oak-navigation v0.0.11
[INFO] [stderr]   Downloaded oak-symbols v0.0.11
[INFO] [stderr]   Downloaded oak-folding v0.0.11
[INFO] [stderr]   Downloaded oak-mcp v0.0.11
[INFO] [stderr]   Downloaded oak-macros v0.0.11
[INFO] [stderr]   Downloaded oak-pretty-print v0.0.11
[INFO] [stderr]   Downloaded oak-testing v0.0.11
[INFO] [stderr]   Downloaded oak-core v0.0.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41402cb85902c6b7f0bcf50bed8c7ca153b0f5f55203da95e6ba6ab98ff42f41
[INFO] running `Command { std: "docker" "start" "-a" "41402cb85902c6b7f0bcf50bed8c7ca153b0f5f55203da95e6ba6ab98ff42f41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41402cb85902c6b7f0bcf50bed8c7ca153b0f5f55203da95e6ba6ab98ff42f41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41402cb85902c6b7f0bcf50bed8c7ca153b0f5f55203da95e6ba6ab98ff42f41", kill_on_drop: false }`
[INFO] [stdout] 41402cb85902c6b7f0bcf50bed8c7ca153b0f5f55203da95e6ba6ab98ff42f41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ff6af9d99e1eecbe4787d2faf1885c51dc59926c79545092a388b8a89e97ef6
[INFO] running `Command { std: "docker" "start" "-a" "7ff6af9d99e1eecbe4787d2faf1885c51dc59926c79545092a388b8a89e97ef6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.182
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling zerocopy v0.8.40
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling rand_core v0.9.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling twox-hash v2.1.2
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling triomphe v0.1.15
[INFO] [stderr]    Compiling oak-core v0.0.11
[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-1949cf8c6b5b557f/oak-core-0.0.11/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(allocator_api)] // Required for custom arena allocation and manual memory management
[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 `oak-core` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "7ff6af9d99e1eecbe4787d2faf1885c51dc59926c79545092a388b8a89e97ef6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ff6af9d99e1eecbe4787d2faf1885c51dc59926c79545092a388b8a89e97ef6", kill_on_drop: false }`
[INFO] [stdout] 7ff6af9d99e1eecbe4787d2faf1885c51dc59926c79545092a388b8a89e97ef6
