[INFO] fetching crate gprl-lib-demo 0.1.2...
[INFO] documenting gprl-lib-demo-0.1.2 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate gprl-lib-demo 0.1.2 into /workspace/builds/worker-104/source
[INFO] validating manifest of crates.io crate gprl-lib-demo 0.1.2 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 crates.io crate gprl-lib-demo 0.1.2
[INFO] finished tweaking crates.io crate gprl-lib-demo 0.1.2
[INFO] tweaked toml for crates.io crate gprl-lib-demo 0.1.2 written to /workspace/builds/worker-104/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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] 73ecb1a4968ca81b97809f5dbc38b768f51a649cd282b735e8167f5e0222430d
[INFO] running `Command { std: "docker" "start" "-a" "73ecb1a4968ca81b97809f5dbc38b768f51a649cd282b735e8167f5e0222430d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73ecb1a4968ca81b97809f5dbc38b768f51a649cd282b735e8167f5e0222430d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73ecb1a4968ca81b97809f5dbc38b768f51a649cd282b735e8167f5e0222430d", kill_on_drop: false }`
[INFO] [stdout] 73ecb1a4968ca81b97809f5dbc38b768f51a649cd282b735e8167f5e0222430d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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] 68cd7364b655c52785430416ca2972a30bea7574160ed2bdeabda1a80ee28964
[INFO] running `Command { std: "docker" "start" "-a" "68cd7364b655c52785430416ca2972a30bea7574160ed2bdeabda1a80ee28964", kill_on_drop: false }`
[INFO] [stderr]  Documenting gprl-lib-demo v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/lib.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 |   ///```
[INFO] [stdout]    |  ____^
[INFO] [stdout] 21 | | ///　assert_eq!(gprl_lib_demo::compute_add(1,1), 2);
[INFO] [stdout] 22 | | ///```
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::invalid_rust_codeblocks)]` on by default
[INFO] [stdout]    = note: error from rustc: unknown start of token: \u{3000}
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 20 | ///```text
[INFO] [stdout]    |       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/lib.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 |   ///```
[INFO] [stdout]    |  ____^
[INFO] [stdout] 39 | | ///　assert_eq!(gprl_lib_demo::compute_sub(1,1), 0);
[INFO] [stdout] 40 | | ///```
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: error from rustc: unknown start of token: \u{3000}
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 38 | ///```text
[INFO] [stdout]    |       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `gprl-lib-demo`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name gprl_lib_demo src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3d696ec49a910de8 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "68cd7364b655c52785430416ca2972a30bea7574160ed2bdeabda1a80ee28964", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68cd7364b655c52785430416ca2972a30bea7574160ed2bdeabda1a80ee28964", kill_on_drop: false }`
[INFO] [stdout] 68cd7364b655c52785430416ca2972a30bea7574160ed2bdeabda1a80ee28964