[INFO] cloning repository https://github.com/dtomvan/mumblelink-on-linux
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dtomvan/mumblelink-on-linux" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdtomvan%2Fmumblelink-on-linux", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdtomvan%2Fmumblelink-on-linux'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c842ac44bfadece49c18f66b0f473527626fc164
[INFO] documenting dtomvan/mumblelink-on-linux against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdtomvan%2Fmumblelink-on-linux" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dtomvan/mumblelink-on-linux on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dtomvan/mumblelink-on-linux
[INFO] finished tweaking git repo https://github.com/dtomvan/mumblelink-on-linux
[INFO] tweaked toml for git repo https://github.com/dtomvan/mumblelink-on-linux written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/dtomvan/mumblelink-on-linux already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9dc5803a9d4f08735fd3ace54ba61e316820425a02a5682618ce4ba4e2b7455d
[INFO] running `Command { std: "docker" "start" "-a" "9dc5803a9d4f08735fd3ace54ba61e316820425a02a5682618ce4ba4e2b7455d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9dc5803a9d4f08735fd3ace54ba61e316820425a02a5682618ce4ba4e2b7455d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dc5803a9d4f08735fd3ace54ba61e316820425a02a5682618ce4ba4e2b7455d", kill_on_drop: false }`
[INFO] [stdout] 9dc5803a9d4f08735fd3ace54ba61e316820425a02a5682618ce4ba4e2b7455d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5c5abfe2166cef35af24a06c9188ed90a55dfae30d41e2b770061de00036673
[INFO] running `Command { std: "docker" "start" "-a" "b5c5abfe2166cef35af24a06c9188ed90a55dfae30d41e2b770061de00036673", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking jni-sys v0.3.0
[INFO] [stderr]     Checking cesu8 v1.1.0
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]     Checking mut_static v5.0.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling jni v0.19.0
[INFO] [stderr]     Checking combine v4.6.3
[INFO] [stderr]     Checking mumble-link v0.1.0 (/opt/rustwide/workdir/lib)
[INFO] [stderr]  Documenting mumble-link v0.1.0 (/opt/rustwide/workdir/lib)
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]   --> lib/src/lib.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | /// See: https://www.mumble.info/documentation/developer/positional-audio/link-plugin/
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://www.mumble.info/documentation/developer/positional-audio/link-plugin/>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::bare_urls)]` on by default
[INFO] [stdout]    = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]  Documenting MumbleLink v0.1.0 (/opt/rustwide/workdir/dll)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> dll/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(io_error_more)]
[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 `MumbleLink`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type cdylib --crate-name MumbleLink dll/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=6daa39d171924aa8 -L dependency=/opt/rustwide/target/debug/deps --extern jni=/opt/rustwide/target/debug/deps/libjni-bb5bb2244763e670.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-701e134f05ff346a.rmeta --extern mumble_link=/opt/rustwide/target/debug/deps/libmumble_link-27c5642df87cc25f.rmeta --extern mut_static=/opt/rustwide/target/debug/deps/libmut_static-5bfe43441513e784.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b5c5abfe2166cef35af24a06c9188ed90a55dfae30d41e2b770061de00036673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5c5abfe2166cef35af24a06c9188ed90a55dfae30d41e2b770061de00036673", kill_on_drop: false }`
[INFO] [stdout] b5c5abfe2166cef35af24a06c9188ed90a55dfae30d41e2b770061de00036673