[INFO] fetching crate itools-gui 0.0.1...
[INFO] checking itools-gui-0.0.1 against 1.95.0 for pr-155915
[INFO] extracting crate itools-gui 0.0.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate itools-gui 0.0.1
[INFO] finished tweaking crates.io crate itools-gui 0.0.1
[INFO] tweaked toml for crates.io crate itools-gui 0.0.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate itools-gui 0.0.1 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 itools-gui 0.0.1 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-macros v0.0.9
[INFO] [stderr]   Downloaded itools-localization v0.0.1
[INFO] [stderr]   Downloaded itools-config v0.0.1
[INFO] [stderr]   Downloaded itools-macros v0.0.1
[INFO] [stderr]   Downloaded oak-fluent v0.0.9
[INFO] [stderr]   Downloaded oak-toml v0.0.9
[INFO] [stderr]   Downloaded oak-core v0.0.9
[INFO] [stderr]   Downloaded oak-json v0.0.9
[INFO] [stderr]   Downloaded oak-yaml v0.0.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] fc575786b3064d93a3afdae5ce66787fa8a523600cc257ec0e8c555ab77cdfd1
[INFO] running `Command { std: "docker" "start" "-a" "fc575786b3064d93a3afdae5ce66787fa8a523600cc257ec0e8c555ab77cdfd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc575786b3064d93a3afdae5ce66787fa8a523600cc257ec0e8c555ab77cdfd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc575786b3064d93a3afdae5ce66787fa8a523600cc257ec0e8c555ab77cdfd1", kill_on_drop: false }`
[INFO] [stdout] fc575786b3064d93a3afdae5ce66787fa8a523600cc257ec0e8c555ab77cdfd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 366afafd7e3d59a6b8904d92b092a952d5c5b03fde1a73bd5e60103a824086d8
[INFO] running `Command { std: "docker" "start" "-a" "366afafd7e3d59a6b8904d92b092a952d5c5b03fde1a73bd5e60103a824086d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling zerocopy v0.8.47
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling oak-macros v0.0.9
[INFO] [stderr]    Compiling itools-macros v0.0.1
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking tracing-subscriber v0.3.23
[INFO] [stderr]     Checking getrandom v0.3.4
[INFO] [stderr]     Checking rand_core v0.9.5
[INFO] [stderr]     Checking serde_json v1.0.149
[INFO] [stderr]     Checking triomphe v0.1.15
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking twox-hash v2.1.2
[INFO] [stderr]     Checking oak-core v0.0.9
[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-0.0.9/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" "366afafd7e3d59a6b8904d92b092a952d5c5b03fde1a73bd5e60103a824086d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "366afafd7e3d59a6b8904d92b092a952d5c5b03fde1a73bd5e60103a824086d8", kill_on_drop: false }`
[INFO] [stdout] 366afafd7e3d59a6b8904d92b092a952d5c5b03fde1a73bd5e60103a824086d8