[INFO] fetching crate radix50-cli 0.1.0...
[INFO] documenting radix50-cli-0.1.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate radix50-cli 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate radix50-cli 0.1.0 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 radix50-cli 0.1.0
[INFO] finished tweaking crates.io crate radix50-cli 0.1.0
[INFO] tweaked toml for crates.io crate radix50-cli 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate radix50-cli 0.1.0 already has a lockfile, it will not be regenerated
[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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded radix50 v0.1.0
[INFO] [stderr]   Downloaded const_for v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 7d822d6a1f9fa99e0b621c5cb95051c01edc83a60c8c2cfe398ac22d5d064b60
[INFO] running `Command { std: "docker" "start" "-a" "7d822d6a1f9fa99e0b621c5cb95051c01edc83a60c8c2cfe398ac22d5d064b60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d822d6a1f9fa99e0b621c5cb95051c01edc83a60c8c2cfe398ac22d5d064b60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d822d6a1f9fa99e0b621c5cb95051c01edc83a60c8c2cfe398ac22d5d064b60", kill_on_drop: false }`
[INFO] [stdout] 7d822d6a1f9fa99e0b621c5cb95051c01edc83a60c8c2cfe398ac22d5d064b60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 9689237470a559d2ed68ff7e4ee7bc7a71f705af1f05b65d53b4dffec20a1eae
[INFO] running `Command { std: "docker" "start" "-a" "9689237470a559d2ed68ff7e4ee7bc7a71f705af1f05b65d53b4dffec20a1eae", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking const_for v0.1.2
[INFO] [stderr]     Checking radix50 v0.1.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]     Checking regex-automata v0.3.8
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]     Checking regex v1.9.5
[INFO] [stderr]     Checking docopt v1.1.1
[INFO] [stderr]  Documenting radix50-cli v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> radix50-cli.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(iter_intersperse)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> radix50-cli.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(array_chunks)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `radix50-cli`
[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=2021 --crate-type bin --crate-name r50 radix50-cli.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=76c8dbf87d472e91 -L dependency=/opt/rustwide/target/debug/deps --extern docopt=/opt/rustwide/target/debug/deps/libdocopt-7a6895815d7c85cc.rmeta --extern radix50=/opt/rustwide/target/debug/deps/libradix50-d02bb155ff3dca47.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-0957283bc0ce5061.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "9689237470a559d2ed68ff7e4ee7bc7a71f705af1f05b65d53b4dffec20a1eae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9689237470a559d2ed68ff7e4ee7bc7a71f705af1f05b65d53b4dffec20a1eae", kill_on_drop: false }`
[INFO] [stdout] 9689237470a559d2ed68ff7e4ee7bc7a71f705af1f05b65d53b4dffec20a1eae
