[INFO] fetching crate crustacean 0.3.1...
[INFO] documenting crustacean-0.3.1 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate crustacean 0.3.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate crustacean 0.3.1 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate crustacean 0.3.1
[INFO] finished tweaking crates.io crate crustacean 0.3.1
[INFO] tweaked toml for crates.io crate crustacean 0.3.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 45e50e689bd6a1d8e2c74e814379a5f973ca8eb5d68f37a40f2def979e87876e
[INFO] running `Command { std: "docker" "start" "-a" "45e50e689bd6a1d8e2c74e814379a5f973ca8eb5d68f37a40f2def979e87876e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45e50e689bd6a1d8e2c74e814379a5f973ca8eb5d68f37a40f2def979e87876e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45e50e689bd6a1d8e2c74e814379a5f973ca8eb5d68f37a40f2def979e87876e", kill_on_drop: false }`
[INFO] [stdout] 45e50e689bd6a1d8e2c74e814379a5f973ca8eb5d68f37a40f2def979e87876e
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d823d3b2f00f05f2c9e2fc92f324bb130cdd6f51a5ff6eee6e3ecb54684fb33b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d823d3b2f00f05f2c9e2fc92f324bb130cdd6f51a5ff6eee6e3ecb54684fb33b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling clang-sys v0.13.0
[INFO] [stderr]    Compiling clang-sys v0.11.1
[INFO] [stderr]     Checking clang v0.14.1
[INFO] [stderr]  Documenting crustacean v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> src/lib.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[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 E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `crustacean`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name crustacean src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern clang=/opt/rustwide/target/debug/deps/libclang-a8c5afe25b37649e.rmeta --extern clang_sys=/opt/rustwide/target/debug/deps/libclang_sys-ec618908957403fd.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-1ad3ad1e20beb97f.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "d823d3b2f00f05f2c9e2fc92f324bb130cdd6f51a5ff6eee6e3ecb54684fb33b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d823d3b2f00f05f2c9e2fc92f324bb130cdd6f51a5ff6eee6e3ecb54684fb33b", kill_on_drop: false }`
[INFO] [stdout] d823d3b2f00f05f2c9e2fc92f324bb130cdd6f51a5ff6eee6e3ecb54684fb33b