[INFO] cloning repository https://github.com/alexandre-janniaux/vlc-module-tool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alexandre-janniaux/vlc-module-tool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexandre-janniaux%2Fvlc-module-tool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexandre-janniaux%2Fvlc-module-tool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71eeb658ff5eb92e3429e509972958b69db44eae
[INFO] documenting alexandre-janniaux/vlc-module-tool against 1.69.0 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexandre-janniaux%2Fvlc-module-tool" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexandre-janniaux/vlc-module-tool 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 git repo https://github.com/alexandre-janniaux/vlc-module-tool
[INFO] finished tweaking git repo https://github.com/alexandre-janniaux/vlc-module-tool
[INFO] tweaked toml for git repo https://github.com/alexandre-janniaux/vlc-module-tool written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/alexandre-janniaux/vlc-module-tool 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" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 140a0c07176869e24d4283586b293dd3bbb9aedd5f9d2700ffec7e18cbeaefd8
[INFO] running `Command { std: "docker" "start" "-a" "140a0c07176869e24d4283586b293dd3bbb9aedd5f9d2700ffec7e18cbeaefd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "140a0c07176869e24d4283586b293dd3bbb9aedd5f9d2700ffec7e18cbeaefd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "140a0c07176869e24d4283586b293dd3bbb9aedd5f9d2700ffec7e18cbeaefd8", kill_on_drop: false }`
[INFO] [stdout] 140a0c07176869e24d4283586b293dd3bbb9aedd5f9d2700ffec7e18cbeaefd8
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/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] 3c15ebff3086329041ec083689d867b3ae46b9dce05d1e34fd8f389ae387fad8
[INFO] running `Command { std: "docker" "start" "-a" "3c15ebff3086329041ec083689d867b3ae46b9dce05d1e34fd8f389ae387fad8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling dlopen_derive v0.1.4
[INFO] [stderr]     Checking dlopen v0.1.8
[INFO] [stderr]  Documenting vlc-module-tool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(c_variadic)]
[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 `vlc-module-tool`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name vlc_module_tool src/main.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=3f22f01b5122f214 -L dependency=/opt/rustwide/target/debug/deps --extern dlopen=/opt/rustwide/target/debug/deps/libdlopen-3d2ad2a8d5da9e8f.rmeta --extern dlopen_derive=/opt/rustwide/target/debug/deps/libdlopen_derive-36863b94e1e229c7.so --extern libc=/opt/rustwide/target/debug/deps/liblibc-0d78cf9f00ceeeb0.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3c15ebff3086329041ec083689d867b3ae46b9dce05d1e34fd8f389ae387fad8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c15ebff3086329041ec083689d867b3ae46b9dce05d1e34fd8f389ae387fad8", kill_on_drop: false }`
[INFO] [stdout] 3c15ebff3086329041ec083689d867b3ae46b9dce05d1e34fd8f389ae387fad8
