[INFO] fetching crate safer-ffi 0.0.7...
[INFO] documenting safer-ffi-0.0.7 against try#6fd27704e643b25711e6a97ec2b04873b411b97d for pr-96676
[INFO] extracting crate safer-ffi 0.0.7 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate safer-ffi 0.0.7 on toolchain 6fd27704e643b25711e6a97ec2b04873b411b97d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6fd27704e643b25711e6a97ec2b04873b411b97d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/.cargo/config
[INFO] removed /workspace/builds/worker-6/source/rust-toolchain
[INFO] started tweaking crates.io crate safer-ffi 0.0.7
[INFO] finished tweaking crates.io crate safer-ffi 0.0.7
[INFO] tweaked toml for crates.io crate safer-ffi 0.0.7 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6fd27704e643b25711e6a97ec2b04873b411b97d" "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" "+6fd27704e643b25711e6a97ec2b04873b411b97d" "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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+6fd27704e643b25711e6a97ec2b04873b411b97d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e9611353436db500d9b08a6ec5d3074e108ab7560fea8eb9ad1e158781fc5b5
[INFO] running `Command { std: "docker" "start" "-a" "4e9611353436db500d9b08a6ec5d3074e108ab7560fea8eb9ad1e158781fc5b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e9611353436db500d9b08a6ec5d3074e108ab7560fea8eb9ad1e158781fc5b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e9611353436db500d9b08a6ec5d3074e108ab7560fea8eb9ad1e158781fc5b5", kill_on_drop: false }`
[INFO] [stdout] 4e9611353436db500d9b08a6ec5d3074e108ab7560fea8eb9ad1e158781fc5b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+6fd27704e643b25711e6a97ec2b04873b411b97d" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2139c9a2d53d2ad51103592d6c5058af29b6a0a3a963995a0412f0846a58359a
[INFO] running `Command { std: "docker" "start" "-a" "2139c9a2d53d2ad51103592d6c5058af29b6a0a3a963995a0412f0846a58359a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling mini_paste-proc_macro v0.1.11
[INFO] [stderr]    Compiling safer_ffi-proc_macro v0.0.7
[INFO] [stderr]     Checking mini_paste v0.1.11
[INFO] [stderr]  Documenting safer-ffi v0.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]   --> src/layout/macros.rs:49:7
[INFO] [stdout]    |
[INFO] [stdout] 49 | /// [`ReprC!`] macro to safely implement [`ReprC`][`trait@crate::layout::ReprC`].
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(rustdoc::macro_rules_fallback)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown disambiguator ` trait`
[INFO] [stdout]    --> src/layout/macros.rs:39:7
[INFO] [stdout]     |
[INFO] [stdout] 39  |       $(#[$meta])*
[INFO] [stdout]     |  _______^
[INFO] [stdout] 40  | |     #[doc = $doc]
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/char_p.rs:243:1
[INFO] [stdout]     |
[INFO] [stdout] 243 | / ReprC! {
[INFO] [stdout] 244 | |     #[repr(transparent)]
[INFO] [stdout] 245 | |     #[allow(missing_copy_implementations)]
[INFO] [stdout] 246 | |     /// Same as [`char_p_ref`], but without any lifetime attached whatsoever.
[INFO] [stdout] ...   |
[INFO] [stdout] 254 | |     );
[INFO] [stdout] 255 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]     = note: the link appears in this line:
[INFO] [stdout]             
[INFO] [stdout]             locally borrows it, due to limitations of the [`ReprC`][
[INFO] [stdout]                                                           ^^^^^^
[INFO] [stdout]     = note: see https://doc.rust-lang.org/nightly/rustdoc/linking-to-items-by-name.html#namespaces-and-disambiguators for more info about disambiguators
[INFO] [stdout]     = note: this warning originates in the macro `$crate::__with_doc__` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown disambiguator ` trait`
[INFO] [stdout]   --> src/layout/macros.rs:39:7
[INFO] [stdout]    |
[INFO] [stdout] 39 |        $(#[$meta])*
[INFO] [stdout]    |  ________^
[INFO] [stdout] 40 | |      #[doc = $doc]
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/slice.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 |  / ReprC! {
[INFO] [stdout] 22 |  |     #[repr(C)]
[INFO] [stdout] 23 |  |     /// Like [`slice_ref`] and [`slice_mut`], but with any lifetime attached
[INFO] [stdout] 24 |  |     /// whatsoever.
[INFO] [stdout] ...   |
[INFO] [stdout] 55 |  |     }
[INFO] [stdout] 56 |  | }
[INFO] [stdout]    |  |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: the link appears in this line:
[INFO] [stdout]            
[INFO] [stdout]            locally borrows it, due to limitations of the [`ReprC`][
[INFO] [stdout]                                                          ^^^^^^
[INFO] [stdout]    = note: see https://doc.rust-lang.org/nightly/rustdoc/linking-to-items-by-name.html#namespaces-and-disambiguators for more info about disambiguators
[INFO] [stdout]    = note: this warning originates in the macro `$crate::__with_doc__` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `safer-ffi`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name safer_ffi src/_lib.rs -o /opt/rustwide/target/doc --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="std"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=14d49c665b161ab2 -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-946563c4d6950f71.rmeta --extern paste=/opt/rustwide/target/debug/deps/libmini_paste-a98b7a755c2a2a26.rmeta --extern proc_macro=/opt/rustwide/target/debug/deps/libsafer_ffi_proc_macro-dabac71843ee0b1e.so --cap-lints=forbid --crate-version 0.0.7` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "2139c9a2d53d2ad51103592d6c5058af29b6a0a3a963995a0412f0846a58359a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2139c9a2d53d2ad51103592d6c5058af29b6a0a3a963995a0412f0846a58359a", kill_on_drop: false }`
[INFO] [stdout] 2139c9a2d53d2ad51103592d6c5058af29b6a0a3a963995a0412f0846a58359a