[INFO] fetching crate deferred-reference 0.1.2...
[INFO] documenting deferred-reference-0.1.2 against try#6fd27704e643b25711e6a97ec2b04873b411b97d for pr-96676
[INFO] extracting crate deferred-reference 0.1.2 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate deferred-reference 0.1.2 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] started tweaking crates.io crate deferred-reference 0.1.2
[INFO] finished tweaking crates.io crate deferred-reference 0.1.2
[INFO] tweaked toml for crates.io crate deferred-reference 0.1.2 written to /workspace/builds/worker-29/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6fd27704e643b25711e6a97ec2b04873b411b97d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] 1f2b9b0942c6e4722a8da8e6aadd0f9f5f2b449a45400d4e198aebd23c312581
[INFO] running `Command { std: "docker" "start" "-a" "1f2b9b0942c6e4722a8da8e6aadd0f9f5f2b449a45400d4e198aebd23c312581", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f2b9b0942c6e4722a8da8e6aadd0f9f5f2b449a45400d4e198aebd23c312581", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f2b9b0942c6e4722a8da8e6aadd0f9f5f2b449a45400d4e198aebd23c312581", kill_on_drop: false }`
[INFO] [stdout] 1f2b9b0942c6e4722a8da8e6aadd0f9f5f2b449a45400d4e198aebd23c312581
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] e785aed234dc049605c87832737b181b96a472c40365272763c0efefadf4c8b6
[INFO] running `Command { std: "docker" "start" "-a" "e785aed234dc049605c87832737b181b96a472c40365272763c0efefadf4c8b6", kill_on_drop: false }`
[INFO] [stderr]  Documenting deferred-reference v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]    --> src/defer.rs:167:84
[INFO] [stdout]     |
[INFO] [stdout] 167 | /// then you may do so using the unsafe [`defer!`](macro@defer) and [`defer_mut!`](macro@defer_mut) macros.
[INFO] [stdout]     |                                                                                    ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(rustdoc::macro_rules_fallback)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]   --> src/deferred.rs:60:49
[INFO] [stdout]    |
[INFO] [stdout] 60 | /// 5. Through the _extremely unsafe_ [`defer`](macro@defer) macro (not recommended).
[INFO] [stdout]    |                                                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]    --> src/deferred.rs:140:53
[INFO] [stdout]     |
[INFO] [stdout] 140 | /// 5. Through the _extremely unsafe_ [`defer_mut`](macro@defer_mut) macro (not recommended).
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]   --> src/defer_mut.rs:65:89
[INFO] [stdout]    |
[INFO] [stdout] 65 | /// However, this can get very complicated and very unsafe real fast, see the [`defer`](macro@defer#caveat)
[INFO] [stdout]    |                                                                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]   --> src/defer_mut.rs:70:71
[INFO] [stdout]    |
[INFO] [stdout] 70 | /// which are not re-borrowed, even the ones created by the [`defer`](macro@defer) macro (`Deferred<&T>` instances returned by the
[INFO] [stdout]    |                                                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]   --> src/defer_mut.rs:72:37
[INFO] [stdout]    |
[INFO] [stdout] 72 | /// together with the [`defer_mut`](macro@defer_mut) macro if you take special care to always call [`defer!`](macro@defer) again to refresh
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `deferred-reference`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name deferred_reference src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="coerce_unsized"' --cfg 'feature="default"' --cfg 'feature="slice_ptr_len"' --cfg 'feature="unstable"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=9272153b374d6f17 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid --crate-version 0.1.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e785aed234dc049605c87832737b181b96a472c40365272763c0efefadf4c8b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e785aed234dc049605c87832737b181b96a472c40365272763c0efefadf4c8b6", kill_on_drop: false }`
[INFO] [stdout] e785aed234dc049605c87832737b181b96a472c40365272763c0efefadf4c8b6