[INFO] fetching crate libffi 3.0.0...
[INFO] documenting libffi-3.0.0 against master#e1df625306f4136949e02612406f0c60df6008f3 for pr-96676
[INFO] extracting crate libffi 3.0.0 into /workspace/builds/worker-81/source
[INFO] validating manifest of crates.io crate libffi 3.0.0 on toolchain e1df625306f4136949e02612406f0c60df6008f3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libffi 3.0.0
[INFO] finished tweaking crates.io crate libffi 3.0.0
[INFO] tweaked toml for crates.io crate libffi 3.0.0 written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] crate crates.io crate libffi 3.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded abort_on_panic v2.0.0
[INFO] [stderr]   Downloaded libc v0.2.119
[INFO] [stderr]   Downloaded libffi-sys v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+e1df625306f4136949e02612406f0c60df6008f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a934b2746c11f4fa78f7727e8a58944b038d6648fc2c58f9ae70bd450f14184d
[INFO] running `Command { std: "docker" "start" "-a" "a934b2746c11f4fa78f7727e8a58944b038d6648fc2c58f9ae70bd450f14184d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a934b2746c11f4fa78f7727e8a58944b038d6648fc2c58f9ae70bd450f14184d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a934b2746c11f4fa78f7727e8a58944b038d6648fc2c58f9ae70bd450f14184d", kill_on_drop: false }`
[INFO] [stdout] a934b2746c11f4fa78f7727e8a58944b038d6648fc2c58f9ae70bd450f14184d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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=forbid" "-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" "+e1df625306f4136949e02612406f0c60df6008f3" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65a51b98e8bfcc1462107c2c0bb4df7ed361db827f32108216da98ea09abb88f
[INFO] running `Command { std: "docker" "start" "-a" "65a51b98e8bfcc1462107c2c0bb4df7ed361db827f32108216da98ea09abb88f", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]     Checking abort_on_panic v2.0.0
[INFO] [stderr]    Compiling libffi-sys v2.0.0
[INFO] [stderr]  Documenting libffi v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `Cif`
[INFO] [stdout]   --> src/middle/types.rs:58:23
[INFO] [stdout]    |
[INFO] [stdout] 58 | /// when creating a [`Cif`].
[INFO] [stdout]    |                       ^^^ no item named `Cif` 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 25.43s
[INFO] running `Command { std: "docker" "inspect" "65a51b98e8bfcc1462107c2c0bb4df7ed361db827f32108216da98ea09abb88f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65a51b98e8bfcc1462107c2c0bb4df7ed361db827f32108216da98ea09abb88f", kill_on_drop: false }`
[INFO] [stdout] 65a51b98e8bfcc1462107c2c0bb4df7ed361db827f32108216da98ea09abb88f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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=forbid" "-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" "+e1df625306f4136949e02612406f0c60df6008f3" "rustdoc" "--lib" "-Zrustdoc-map" "--features" "system" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 7d31aee1562c9f9237d944aaac95e258e3795219082b5ae351d49b8e51595421
[INFO] running `Command { std: "docker" "start" "-a" "7d31aee1562c9f9237d944aaac95e258e3795219082b5ae351d49b8e51595421", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]     Checking abort_on_panic v2.0.0
[INFO] [stderr]    Compiling libffi-sys v2.0.0
[INFO] [stderr]  Documenting libffi v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `Cif`
[INFO] [stdout]   --> src/middle/types.rs:58:23
[INFO] [stdout]    |
[INFO] [stdout] 58 | /// when creating a [`Cif`].
[INFO] [stdout]    |                       ^^^ no item named `Cif` 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 15.62s
[INFO] running `Command { std: "docker" "inspect" "7d31aee1562c9f9237d944aaac95e258e3795219082b5ae351d49b8e51595421", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d31aee1562c9f9237d944aaac95e258e3795219082b5ae351d49b8e51595421", kill_on_drop: false }`
[INFO] [stdout] 7d31aee1562c9f9237d944aaac95e258e3795219082b5ae351d49b8e51595421