[INFO] fetching crate tracing-chrometrace 0.1.19...
[INFO] documenting tracing-chrometrace-0.1.19 against 1.69.0 for beta-1.70-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 1.69.0
[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 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" __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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-chrome v0.5.0
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56785d872495f2df4a3998dca739c317d3174e803ca8bf25ec5a115be146cc93
[INFO] running `Command { std: "docker" "start" "-a" "56785d872495f2df4a3998dca739c317d3174e803ca8bf25ec5a115be146cc93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56785d872495f2df4a3998dca739c317d3174e803ca8bf25ec5a115be146cc93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56785d872495f2df4a3998dca739c317d3174e803ca8bf25ec5a115be146cc93", kill_on_drop: false }`
[INFO] [stdout] 56785d872495f2df4a3998dca739c317d3174e803ca8bf25ec5a115be146cc93
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/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] eceb6743678ed53aadbeb7589b2bf39c1d5aeffbc60c2eb7d7301a2dc7ef1668
[INFO] running `Command { std: "docker" "start" "-a" "eceb6743678ed53aadbeb7589b2bf39c1d5aeffbc60c2eb7d7301a2dc7ef1668", kill_on_drop: false }`
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling tokio v1.28.0
[INFO] [stderr]     Checking regex-syntax v0.7.1
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking crossbeam-queue v0.3.8
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling strum_macros v0.22.0
[INFO] [stderr]     Checking regex v1.8.1
[INFO] [stderr]     Checking tracing-subscriber v0.3.17
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]     Checking strum v0.22.0
[INFO] [stderr]    Compiling darling v0.14.4
[INFO] [stderr]    Compiling derive_builder_core v0.11.2
[INFO] [stderr]    Compiling derive_builder_macro v0.11.2
[INFO] [stderr]     Checking derive_builder v0.11.2
[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: `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=6c58a597c099a4f5 -L dependency=/opt/rustwide/target/debug/deps --extern crossbeam_queue=/opt/rustwide/target/debug/deps/libcrossbeam_queue-e1a443e7f935e910.rmeta --extern derivative=/opt/rustwide/target/debug/deps/libderivative-c1c6a9d4ebf7eb76.so --extern derive_builder=/opt/rustwide/target/debug/deps/libderive_builder-3e733f6a9ab863f2.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-578991b5e0b8e761.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-0022dcab234a8681.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-a68a2369201bc8c4.rmeta --extern strum=/opt/rustwide/target/debug/deps/libstrum-2332b194951ef22d.rmeta --extern strum_macros=/opt/rustwide/target/debug/deps/libstrum_macros-51905f1ce0e05fa8.so --extern tokio=/opt/rustwide/target/debug/deps/libtokio-5cdcfd99e5e73aa7.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-2477a818ca7b97e1.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-8306f432a7828849.rmeta --cap-lints=warn --crate-version 0.1.19` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "eceb6743678ed53aadbeb7589b2bf39c1d5aeffbc60c2eb7d7301a2dc7ef1668", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eceb6743678ed53aadbeb7589b2bf39c1d5aeffbc60c2eb7d7301a2dc7ef1668", kill_on_drop: false }`
[INFO] [stdout] eceb6743678ed53aadbeb7589b2bf39c1d5aeffbc60c2eb7d7301a2dc7ef1668
