[INFO] fetching crate ffigen 0.0.1...
[INFO] documenting ffigen-0.0.1 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate ffigen 0.0.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ffigen 0.0.1 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ffigen 0.0.1
[INFO] finished tweaking crates.io crate ffigen 0.0.1
[INFO] tweaked toml for crates.io crate ffigen 0.0.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bea736c4cd2d18458d90c9792442ace1b916bf11f33792e0d2bae6dfb5dd3b3
[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" "7bea736c4cd2d18458d90c9792442ace1b916bf11f33792e0d2bae6dfb5dd3b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bea736c4cd2d18458d90c9792442ace1b916bf11f33792e0d2bae6dfb5dd3b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bea736c4cd2d18458d90c9792442ace1b916bf11f33792e0d2bae6dfb5dd3b3", kill_on_drop: false }`
[INFO] [stdout] 7bea736c4cd2d18458d90c9792442ace1b916bf11f33792e0d2bae6dfb5dd3b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] 7926225300c4d2e6bd570ff65888d48d41c616f67ef065d7d0ddc73b90aa57a7
[INFO] running `Command { std: "docker" "start" "-a" "7926225300c4d2e6bd570ff65888d48d41c616f67ef065d7d0ddc73b90aa57a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling extprim v1.7.1
[INFO] [stderr]     Checking syntex_pos v0.59.1
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking syntex_errors v0.59.1
[INFO] [stderr]     Checking syntex_syntax v0.59.1
[INFO] [stderr]  Documenting ffigen v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `ffigen`.
[INFO] [stdout] error[E0412]: cannot find type `InternedString` in module `parse::token`
[INFO] [stdout]    --> src/parser/source.rs:115:48
[INFO] [stdout]     |
[INFO] [stdout] 115 | fn interned_to_string(interned: &parse::token::InternedString) -> String {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^ not found in `parse::token`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 1   | use syntex_syntax::symbol::InternedString;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name ffigen 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 libc=/opt/rustwide/target/debug/deps/liblibc-0d4e59a692e831a5.rmeta --extern syntex_syntax=/opt/rustwide/target/debug/deps/libsyntex_syntax-275fdd4c89a47abe.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-e889053d9cb8e262.rmeta --cap-lints=warn --crate-version 0.0.1` (exit code: 1)
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7926225300c4d2e6bd570ff65888d48d41c616f67ef065d7d0ddc73b90aa57a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7926225300c4d2e6bd570ff65888d48d41c616f67ef065d7d0ddc73b90aa57a7", kill_on_drop: false }`
[INFO] [stdout] 7926225300c4d2e6bd570ff65888d48d41c616f67ef065d7d0ddc73b90aa57a7
