[INFO] fetching crate syn-test-suite 0.0.0+test...
[INFO] documenting syn-test-suite-0.0.0+test against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate syn-test-suite 0.0.0+test into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate syn-test-suite 0.0.0+test 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 syn-test-suite 0.0.0+test
[INFO] finished tweaking crates.io crate syn-test-suite 0.0.0+test
[INFO] tweaked toml for crates.io crate syn-test-suite 0.0.0+test written to /workspace/builds/worker-9/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 737dc806852a35f4ba62528c39d906d4306383b180fd116bd31e372bf471f5ec
[INFO] running `Command { std: "docker" "start" "-a" "737dc806852a35f4ba62528c39d906d4306383b180fd116bd31e372bf471f5ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "737dc806852a35f4ba62528c39d906d4306383b180fd116bd31e372bf471f5ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "737dc806852a35f4ba62528c39d906d4306383b180fd116bd31e372bf471f5ec", kill_on_drop: false }`
[INFO] [stdout] 737dc806852a35f4ba62528c39d906d4306383b180fd116bd31e372bf471f5ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 4d5892ff01c701b36cf9610e4be97300d60e4b1de18e96b5cdfaa560288f32a5
[INFO] running `Command { std: "docker" "start" "-a" "4d5892ff01c701b36cf9610e4be97300d60e4b1de18e96b5cdfaa560288f32a5", kill_on_drop: false }`
[INFO] [stdout] error: expected item, found `@`
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | @
[INFO] [stdout]   | ^ expected item
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting syn-test-suite v0.0.0+test (/opt/rustwide/workdir)
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `syn-test-suite`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name syn_test_suite src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=008d2a8dcef84f4c -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.0.0+test` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "4d5892ff01c701b36cf9610e4be97300d60e4b1de18e96b5cdfaa560288f32a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d5892ff01c701b36cf9610e4be97300d60e4b1de18e96b5cdfaa560288f32a5", kill_on_drop: false }`
[INFO] [stdout] 4d5892ff01c701b36cf9610e4be97300d60e4b1de18e96b5cdfaa560288f32a5