[INFO] fetching crate oak-structurizr 0.0.11...
[INFO] checking oak-structurizr-0.0.11 against 1.95.0 for pr-155915
[INFO] extracting crate oak-structurizr 0.0.11 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate oak-structurizr 0.0.11
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate oak-structurizr 0.0.11
[INFO] tweaked toml for crates.io crate oak-structurizr 0.0.11 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate oak-structurizr 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-structurizr 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-c4 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] ae1431809b0bb97956ba6e0eec6a1416d41ee09365358ca9eedb83ccb9eb8cdb
[INFO] running `Command { std: "docker" "start" "-a" "ae1431809b0bb97956ba6e0eec6a1416d41ee09365358ca9eedb83ccb9eb8cdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae1431809b0bb97956ba6e0eec6a1416d41ee09365358ca9eedb83ccb9eb8cdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae1431809b0bb97956ba6e0eec6a1416d41ee09365358ca9eedb83ccb9eb8cdb", kill_on_drop: false }`
[INFO] [stdout] ae1431809b0bb97956ba6e0eec6a1416d41ee09365358ca9eedb83ccb9eb8cdb
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39aa2c53c2a8e2e6f10ac2ac887854b7f7826e5785edd11f78c9c07e3dca7ff4
[INFO] running `Command { std: "docker" "start" "-a" "39aa2c53c2a8e2e6f10ac2ac887854b7f7826e5785edd11f78c9c07e3dca7ff4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.182
[INFO] [stderr]    Compiling zerocopy v0.8.40
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking tracing-core v0.1.36
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking memchr v2.8.0
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking rand_core v0.9.5
[INFO] [stderr]     Checking serde_json v1.0.149
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking twox-hash v2.1.2
[INFO] [stderr]     Checking triomphe v0.1.15
[INFO] [stderr]     Checking 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" "39aa2c53c2a8e2e6f10ac2ac887854b7f7826e5785edd11f78c9c07e3dca7ff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39aa2c53c2a8e2e6f10ac2ac887854b7f7826e5785edd11f78c9c07e3dca7ff4", kill_on_drop: false }`
[INFO] [stdout] 39aa2c53c2a8e2e6f10ac2ac887854b7f7826e5785edd11f78c9c07e3dca7ff4