[INFO] fetching crate bq769x0 0.3.1...
[INFO] documenting bq769x0-0.3.1 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate bq769x0 0.3.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate bq769x0 0.3.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bq769x0 0.3.1
[INFO] finished tweaking crates.io crate bq769x0 0.3.1
[INFO] tweaked toml for crates.io crate bq769x0 0.3.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 126672dcf47b0a4c068500adbd93ea47a62ab7745628caf1cedb064046c9b46f
[INFO] running `Command { std: "docker" "start" "-a" "126672dcf47b0a4c068500adbd93ea47a62ab7745628caf1cedb064046c9b46f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "126672dcf47b0a4c068500adbd93ea47a62ab7745628caf1cedb064046c9b46f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "126672dcf47b0a4c068500adbd93ea47a62ab7745628caf1cedb064046c9b46f", kill_on_drop: false }`
[INFO] [stdout] 126672dcf47b0a4c068500adbd93ea47a62ab7745628caf1cedb064046c9b46f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e88ac8e2c2bd400e5bcd2fcf1569c67750e610cabb4adbf68bf3ae342932110
[INFO] running `Command { std: "docker" "start" "-a" "0e88ac8e2c2bd400e5bcd2fcf1569c67750e610cabb4adbf68bf3ae342932110", kill_on_drop: false }`
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling cortex-m v0.6.7
[INFO] [stderr]     Checking crc-any v2.3.12
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking aligned v0.3.5
[INFO] [stderr]  Documenting bq769x0 v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_generics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(const_evaluatable_checked)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(const_panic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `bq769x0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name bq769x0 src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="no_std"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-c759f8d07719039e.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-6e4fc7675baabec1.rmeta --extern crc_any=/opt/rustwide/target/debug/deps/libcrc_any-1d6bd6ebfe41c315.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-4f98a5909ff58772.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-3147f5fe82ea21ef.rmeta --cap-lints=warn --crate-version 0.3.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "0e88ac8e2c2bd400e5bcd2fcf1569c67750e610cabb4adbf68bf3ae342932110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e88ac8e2c2bd400e5bcd2fcf1569c67750e610cabb4adbf68bf3ae342932110", kill_on_drop: false }`
[INFO] [stdout] 0e88ac8e2c2bd400e5bcd2fcf1569c67750e610cabb4adbf68bf3ae342932110
