[INFO] fetching crate turing-machine-rs 0.2.0...
[INFO] documenting turing-machine-rs-0.2.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate turing-machine-rs 0.2.0 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate turing-machine-rs 0.2.0 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 turing-machine-rs 0.2.0
[INFO] finished tweaking crates.io crate turing-machine-rs 0.2.0
[INFO] tweaked toml for crates.io crate turing-machine-rs 0.2.0 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] crate crates.io crate turing-machine-rs 0.2.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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] 84a598abd0c327c20b9a5a2201d95c419cf9b2991edd42f8cceb79afa5bfd9f8
[INFO] running `Command { std: "docker" "start" "-a" "84a598abd0c327c20b9a5a2201d95c419cf9b2991edd42f8cceb79afa5bfd9f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84a598abd0c327c20b9a5a2201d95c419cf9b2991edd42f8cceb79afa5bfd9f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84a598abd0c327c20b9a5a2201d95c419cf9b2991edd42f8cceb79afa5bfd9f8", kill_on_drop: false }`
[INFO] [stdout] 84a598abd0c327c20b9a5a2201d95c419cf9b2991edd42f8cceb79afa5bfd9f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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] c26e215271c2cf7dea4c33f68c7e496a16acb040c69c91095655b49115b6b0eb
[INFO] running `Command { std: "docker" "start" "-a" "c26e215271c2cf7dea4c33f68c7e496a16acb040c69c91095655b49115b6b0eb", kill_on_drop: false }`
[INFO] [stderr]  Documenting turing-machine-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `Tail`
[INFO] [stdout]    --> src/program/core.rs:103:23
[INFO] [stdout]     |
[INFO] [stdout] 103 |     /// [`Head`] or [`Tail`] symbols are not in the [`Program`] alphabet
[INFO] [stdout]     |                       ^^^^ no item named `Tail` in scope
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "c26e215271c2cf7dea4c33f68c7e496a16acb040c69c91095655b49115b6b0eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c26e215271c2cf7dea4c33f68c7e496a16acb040c69c91095655b49115b6b0eb", kill_on_drop: false }`
[INFO] [stdout] c26e215271c2cf7dea4c33f68c7e496a16acb040c69c91095655b49115b6b0eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 769e5faaafb05960efd1405975d33a2d96838a349d5374a18ccc55e8686f85db
[INFO] running `Command { std: "docker" "start" "-a" "769e5faaafb05960efd1405975d33a2d96838a349d5374a18ccc55e8686f85db", kill_on_drop: false }`
[INFO] [stderr]  Documenting turing-machine-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `Tail`
[INFO] [stdout]    --> src/program/core.rs:103:23
[INFO] [stdout]     |
[INFO] [stdout] 103 |     /// [`Head`] or [`Tail`] symbols are not in the [`Program`] alphabet
[INFO] [stdout]     |                       ^^^^ no item named `Tail` in scope
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "769e5faaafb05960efd1405975d33a2d96838a349d5374a18ccc55e8686f85db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "769e5faaafb05960efd1405975d33a2d96838a349d5374a18ccc55e8686f85db", kill_on_drop: false }`
[INFO] [stdout] 769e5faaafb05960efd1405975d33a2d96838a349d5374a18ccc55e8686f85db