[INFO] fetching crate tracing-chrometrace 0.1.19...
[INFO] documenting tracing-chrometrace-0.1.19 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate tracing-chrometrace 0.1.19 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate tracing-chrometrace 0.1.19 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tracing-chrometrace 0.1.19
[INFO] finished tweaking crates.io crate tracing-chrometrace 0.1.19
[INFO] tweaked toml for crates.io crate tracing-chrometrace 0.1.19 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-chrome v0.5.0
[INFO] [stderr]   Downloaded temp-file v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5babb9dd2f1cb9237e8f7afda94025fbc6fbed7f5948f3d054f64227ce10e9dc
[INFO] running `Command { std: "docker" "start" "-a" "5babb9dd2f1cb9237e8f7afda94025fbc6fbed7f5948f3d054f64227ce10e9dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5babb9dd2f1cb9237e8f7afda94025fbc6fbed7f5948f3d054f64227ce10e9dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5babb9dd2f1cb9237e8f7afda94025fbc6fbed7f5948f3d054f64227ce10e9dc", kill_on_drop: false }`
[INFO] [stdout] 5babb9dd2f1cb9237e8f7afda94025fbc6fbed7f5948f3d054f64227ce10e9dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eda2e4d06f10fbd53d82aa175bf29dd088696e99f524e151686b4e9cb85a71a6
[INFO] running `Command { std: "docker" "start" "-a" "eda2e4d06f10fbd53d82aa175bf29dd088696e99f524e151686b4e9cb85a71a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking crossbeam-queue v0.3.10
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking tokio v1.35.1
[INFO] [stderr]    Compiling strum_macros v0.22.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]    Compiling darling v0.14.4
[INFO] [stderr]     Checking strum v0.22.0
[INFO] [stderr]    Compiling derive_builder_core v0.11.2
[INFO] [stderr]    Compiling derive_builder_macro v0.11.2
[INFO] [stderr]     Checking serde v1.0.195
[INFO] [stderr]     Checking derive_builder v0.11.2
[INFO] [stderr]     Checking serde_json v1.0.111
[INFO] [stderr]  Documenting tracing-chrometrace v0.1.19 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(thread_id_value)]
[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 `tracing-chrometrace`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2018 --crate-type lib --crate-name tracing_chrometrace src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=1c3ee8996c4ef098 -L dependency=/opt/rustwide/target/debug/deps --extern crossbeam_queue=/opt/rustwide/target/debug/deps/libcrossbeam_queue-120054ec698c864a.rmeta --extern derivative=/opt/rustwide/target/debug/deps/libderivative-e904b74c696a2e31.so --extern derive_builder=/opt/rustwide/target/debug/deps/libderive_builder-547c803b1437146e.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-dbd7922ddc771bc2.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-3677ff5ef13c4505.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4d6978482fb3a7b2.rmeta --extern strum=/opt/rustwide/target/debug/deps/libstrum-69c138b8dfcbaa26.rmeta --extern strum_macros=/opt/rustwide/target/debug/deps/libstrum_macros-6e095277073265d5.so --extern tokio=/opt/rustwide/target/debug/deps/libtokio-cdbee05af1e5abe6.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-2c3c3c16626aa78c.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-710e5e501bb94b03.rmeta --cap-lints=warn --crate-version 0.1.19` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "eda2e4d06f10fbd53d82aa175bf29dd088696e99f524e151686b4e9cb85a71a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eda2e4d06f10fbd53d82aa175bf29dd088696e99f524e151686b4e9cb85a71a6", kill_on_drop: false }`
[INFO] [stdout] eda2e4d06f10fbd53d82aa175bf29dd088696e99f524e151686b4e9cb85a71a6
