[INFO] fetching crate secp256kfun 0.7.0...
[INFO] documenting secp256kfun-0.7.0 against try#6fd27704e643b25711e6a97ec2b04873b411b97d for pr-96676
[INFO] extracting crate secp256kfun 0.7.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate secp256kfun 0.7.0 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 secp256kfun 0.7.0
[INFO] finished tweaking crates.io crate secp256kfun 0.7.0
[INFO] tweaked toml for crates.io crate secp256kfun 0.7.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate secp256kfun 0.7.0 already has a lockfile, it will not be regenerated
[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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7d87b8906a9077b78b60db94072c74151882d26fabaa470108436902063f1f7d
[INFO] running `Command { std: "docker" "start" "-a" "7d87b8906a9077b78b60db94072c74151882d26fabaa470108436902063f1f7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d87b8906a9077b78b60db94072c74151882d26fabaa470108436902063f1f7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d87b8906a9077b78b60db94072c74151882d26fabaa470108436902063f1f7d", kill_on_drop: false }`
[INFO] [stdout] 7d87b8906a9077b78b60db94072c74151882d26fabaa470108436902063f1f7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d13205d40da99185b5f917660bbffa97f9b6c13a39109b049a3a383984b704de
[INFO] running `Command { std: "docker" "start" "-a" "d13205d40da99185b5f917660bbffa97f9b6c13a39109b049a3a383984b704de", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]     Checking subtle-ng v2.5.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling secp256kfun v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking secp256kfun_k256_backend v2.0.0
[INFO] [stderr]  Documenting secp256kfun v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]    --> src/nonce.rs:148:41
[INFO] [stdout]     |
[INFO] [stdout] 148 | /// In general it's better to use the [`derive_nonce`] macro than to call
[INFO] [stdout]     |                                         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(rustdoc::macro_rules_fallback)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `secp256kfun`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name secp256kfun src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="serde_crate"' --cfg 'feature="std"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=448da5d22160f9ab -L dependency=/opt/rustwide/target/debug/deps --extern digest=/opt/rustwide/target/debug/deps/libdigest-26f93d3d03a9dcfb.rmeta --extern rand_core=/opt/rustwide/target/debug/deps/librand_core-2452a64394db647e.rmeta --extern secp256kfun_k256_backend=/opt/rustwide/target/debug/deps/libsecp256kfun_k256_backend-ba3672acaa59e93e.rmeta --extern serde_crate=/opt/rustwide/target/debug/deps/libserde-8ea76a87485edeaf.rmeta --extern subtle=/opt/rustwide/target/debug/deps/libsubtle_ng-d1329379d24027f0.rmeta --cap-lints=forbid --crate-version 0.7.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d13205d40da99185b5f917660bbffa97f9b6c13a39109b049a3a383984b704de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d13205d40da99185b5f917660bbffa97f9b6c13a39109b049a3a383984b704de", kill_on_drop: false }`
[INFO] [stdout] d13205d40da99185b5f917660bbffa97f9b6c13a39109b049a3a383984b704de