[INFO] fetching crate emf-core-base-rs-ffi 0.1.2...
[INFO] documenting emf-core-base-rs-ffi-0.1.2 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate emf-core-base-rs-ffi 0.1.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate emf-core-base-rs-ffi 0.1.2 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate emf-core-base-rs-ffi 0.1.2
[INFO] finished tweaking crates.io crate emf-core-base-rs-ffi 0.1.2
[INFO] tweaked toml for crates.io crate emf-core-base-rs-ffi 0.1.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:97d61d7686bf65f8ecb15491ab51835e82dc9176a96a831f143a431b191fc501" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 617b14a10fbe91c3a881d35d3f0409bd7f2cb0a8c180b98b0496ca2a8c7b8e6d
[INFO] running `Command { std: "docker" "start" "-a" "617b14a10fbe91c3a881d35d3f0409bd7f2cb0a8c180b98b0496ca2a8c7b8e6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "617b14a10fbe91c3a881d35d3f0409bd7f2cb0a8c180b98b0496ca2a8c7b8e6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "617b14a10fbe91c3a881d35d3f0409bd7f2cb0a8c180b98b0496ca2a8c7b8e6d", kill_on_drop: false }`
[INFO] [stdout] 617b14a10fbe91c3a881d35d3f0409bd7f2cb0a8c180b98b0496ca2a8c7b8e6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:97d61d7686bf65f8ecb15491ab51835e82dc9176a96a831f143a431b191fc501" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99e92336d9199bbd56eb94bf00aa224e78bd9e84a841977c81b622f0c8001c5e
[INFO] running `Command { std: "docker" "start" "-a" "99e92336d9199bbd56eb94bf00aa224e78bd9e84a841977c81b622f0c8001c5e", kill_on_drop: false }`
[INFO] [stderr]  Documenting emf-core-base-rs-ffi v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(c_unwind)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `emf-core-base-rs-ffi`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name emf_core_base_rs_ffi src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=d5b6bfb088bd6f45 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "99e92336d9199bbd56eb94bf00aa224e78bd9e84a841977c81b622f0c8001c5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99e92336d9199bbd56eb94bf00aa224e78bd9e84a841977c81b622f0c8001c5e", kill_on_drop: false }`
[INFO] [stdout] 99e92336d9199bbd56eb94bf00aa224e78bd9e84a841977c81b622f0c8001c5e
