[INFO] fetching crate arc-rs 0.5.1...
[INFO] documenting arc-rs-0.5.1 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate arc-rs 0.5.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate arc-rs 0.5.1 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 arc-rs 0.5.1
[INFO] finished tweaking crates.io crate arc-rs 0.5.1
[INFO] tweaked toml for crates.io crate arc-rs 0.5.1 written to /workspace/builds/worker-6-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 num-traits v0.1.43
[INFO] [stderr]   Downloaded num v0.3.1
[INFO] [stderr]   Downloaded num-bigint v0.3.3
[INFO] [stderr]   Downloaded num-rational v0.3.2
[INFO] [stderr]   Downloaded num-complex v0.3.1
[INFO] [stderr]   Downloaded linked-hash-map v0.3.0
[INFO] [stderr]   Downloaded serde_test v0.8.23
[INFO] [stderr]   Downloaded bigdecimal v0.2.2
[INFO] [stderr]   Downloaded serde v0.8.23
[INFO] [stderr]   Downloaded serde-hjson v0.9.1
[INFO] [stderr]   Downloaded arc-pest v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] cb3b32f83358488aa6f8379ad39d5a8a15d62300c6a9e174d6666283a034dd36
[INFO] running `Command { std: "docker" "start" "-a" "cb3b32f83358488aa6f8379ad39d5a8a15d62300c6a9e174d6666283a034dd36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb3b32f83358488aa6f8379ad39d5a8a15d62300c6a9e174d6666283a034dd36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb3b32f83358488aa6f8379ad39d5a8a15d62300c6a9e174d6666283a034dd36", kill_on_drop: false }`
[INFO] [stdout] cb3b32f83358488aa6f8379ad39d5a8a15d62300c6a9e174d6666283a034dd36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 38851449b0fc6855a341e7f6f9c6a1044679407c9d78e57589bc592c3bdfb2f3
[INFO] running `Command { std: "docker" "start" "-a" "38851449b0fc6855a341e7f6f9c6a1044679407c9d78e57589bc592c3bdfb2f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking ucd-trie v0.1.5
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]     Checking bigdecimal v0.2.2
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking pest v2.6.0
[INFO] [stderr]     Checking arc-pest v0.4.0
[INFO] [stderr]  Documenting arc-rs v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax)]
[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 `arc-rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name arc_rs src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="convert"' --cfg 'feature="default"' --cfg 'feature="json"' --cfg 'feature="serde_json"' --cfg 'feature="toml"' --cfg 'feature="yaml"' --cfg 'feature="yaml-rust"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=923073a4dedc0f79 -L dependency=/opt/rustwide/target/debug/deps --extern arc_pest=/opt/rustwide/target/debug/deps/libarc_pest-361e2063e4619679.rmeta --extern bigdecimal=/opt/rustwide/target/debug/deps/libbigdecimal-cf68c7bb32975144.rmeta --extern indexmap=/opt/rustwide/target/debug/deps/libindexmap-d1c320b6f06e2c2e.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-c0c516aa10ad5826.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-b6956e1a4b2bd63a.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-91a83387343c3267.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-352906950f5c4ef5.rmeta --extern yaml_rust=/opt/rustwide/target/debug/deps/libyaml_rust-0e2bc68b088b46ae.rmeta --cap-lints=warn --crate-version 0.5.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "38851449b0fc6855a341e7f6f9c6a1044679407c9d78e57589bc592c3bdfb2f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38851449b0fc6855a341e7f6f9c6a1044679407c9d78e57589bc592c3bdfb2f3", kill_on_drop: false }`
[INFO] [stdout] 38851449b0fc6855a341e7f6f9c6a1044679407c9d78e57589bc592c3bdfb2f3
