[INFO] cloning repository https://github.com/degurii/rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/degurii/rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdegurii%2Frust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdegurii%2Frust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 275b28da71e0dd455d3681d2f797f470f6c35bca
[INFO] documenting degurii/rust-practice against beta-2026-04-21 for beta-1.96-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdegurii%2Frust-practice" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/degurii/rust-practice
[INFO] finished tweaking git repo https://github.com/degurii/rust-practice
[INFO] tweaked toml for git repo https://github.com/degurii/rust-practice written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/degurii/rust-practice on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/degurii/rust-practice 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2024 which implies `resolver = "3"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2024 resolver, specify `workspace.resolver = "3"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d38dfa1d17270684a4b0e7a43a526fbe8895384a14df73344aaf201d74feddec
[INFO] running `Command { std: "docker" "start" "-a" "d38dfa1d17270684a4b0e7a43a526fbe8895384a14df73344aaf201d74feddec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d38dfa1d17270684a4b0e7a43a526fbe8895384a14df73344aaf201d74feddec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d38dfa1d17270684a4b0e7a43a526fbe8895384a14df73344aaf201d74feddec", kill_on_drop: false }`
[INFO] [stdout] d38dfa1d17270684a4b0e7a43a526fbe8895384a14df73344aaf201d74feddec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1f8631f6980e76a293c4ab6c1575932674b098c83de82c102ee57e3f94ea82e
[INFO] running `Command { std: "docker" "start" "-a" "a1f8631f6980e76a293c4ab6c1575932674b098c83de82c102ee57e3f94ea82e", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2024 which implies `resolver = "3"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2024 resolver, specify `workspace.resolver = "3"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]  Documenting ch03-basic v0.1.0 (/opt/rustwide/workdir/ch03-basic)
[INFO] [stderr]     Checking ch03-basic v0.1.0 (/opt/rustwide/workdir/ch03-basic)
[INFO] [stderr]  Documenting ch04-ownership v0.1.0 (/opt/rustwide/workdir/ch04-ownership)
[INFO] [stderr]  Documenting hello_cargo v0.1.0 (/opt/rustwide/workdir/hello_cargo)
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]  --> ch04-ownership/src/main.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn dangle() -> &String {
[INFO] [stdout]   |                ^ expected named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout]   = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
[INFO] [stdout] help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn dangle() -> &'static String {
[INFO] [stdout]   |                 +++++++
[INFO] [stdout] help: instead, you are more likely to want to return an owned value
[INFO] [stdout]   |
[INFO] [stdout] 5 - fn dangle() -> &String {
[INFO] [stdout] 5 + fn dangle() -> String {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `ch04-ownership`
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a1f8631f6980e76a293c4ab6c1575932674b098c83de82c102ee57e3f94ea82e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1f8631f6980e76a293c4ab6c1575932674b098c83de82c102ee57e3f94ea82e", kill_on_drop: false }`
[INFO] [stdout] a1f8631f6980e76a293c4ab6c1575932674b098c83de82c102ee57e3f94ea82e