[INFO] fetching crate pyo3 0.16.4...
[INFO] documenting pyo3-0.16.4 against try#6fd27704e643b25711e6a97ec2b04873b411b97d for pr-96676
[INFO] extracting crate pyo3 0.16.4 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate pyo3 0.16.4 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-12/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate pyo3 0.16.4
[INFO] finished tweaking crates.io crate pyo3 0.16.4
[INFO] tweaked toml for crates.io crate pyo3 0.16.4 written to /workspace/builds/worker-12/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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] aed40c09109af501b4a5620a069c49aa94d182b83e00de5e8b93bb9feb6c834f
[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" "aed40c09109af501b4a5620a069c49aa94d182b83e00de5e8b93bb9feb6c834f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aed40c09109af501b4a5620a069c49aa94d182b83e00de5e8b93bb9feb6c834f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aed40c09109af501b4a5620a069c49aa94d182b83e00de5e8b93bb9feb6c834f", kill_on_drop: false }`
[INFO] [stdout] aed40c09109af501b4a5620a069c49aa94d182b83e00de5e8b93bb9feb6c834f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] d2348ead6134359e526bf93d5f0a3c08a93594c479f017768a3e9a7c33309e2c
[INFO] running `Command { std: "docker" "start" "-a" "d2348ead6134359e526bf93d5f0a3c08a93594c479f017768a3e9a7c33309e2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.12.3
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling unindent v0.1.8
[INFO] [stderr]    Compiling indoc v1.0.4
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling pyo3-build-config v0.16.4
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]    Compiling pyo3-ffi v0.16.4
[INFO] [stderr]    Compiling pyo3 v0.16.4 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling pyo3-macros-backend v0.16.4
[INFO] [stderr]    Compiling pyo3-macros v0.16.4
[INFO] [stderr]  Documenting pyo3 v0.16.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]  --> src/exceptions.rs:8:39
[INFO] [stdout]   |
[INFO] [stdout] 8 | //! The latter are created with the [`import_exception`] macro, which you can use yourself
[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/instance.rs:538:68
[INFO] [stdout]     |
[INFO] [stdout] 538 |     /// If calling this method becomes performance-critical, the [`intern!`] macro can be used
[INFO] [stdout]     |                                                                    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]    --> src/instance.rs:569:68
[INFO] [stdout]     |
[INFO] [stdout] 569 |     /// If calling this method becomes performance-critical, the [`intern!`] macro can be used
[INFO] [stdout]     |                                                                    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `pyo3`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name pyo3 src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="indoc"' --cfg 'feature="macros"' --cfg 'feature="pyo3-macros"' --cfg 'feature="pyproto"' --cfg 'feature="unindent"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a54611022818f299 -L dependency=/opt/rustwide/target/debug/deps --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-88879d2dc0fa106c.rmeta --extern indoc=/opt/rustwide/target/debug/deps/libindoc-11dd352a7b55342a.so --extern libc=/opt/rustwide/target/debug/deps/liblibc-d5d6a57393ac9164.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-c83e86a19bea0468.rmeta --extern pyo3_ffi=/opt/rustwide/target/debug/deps/libpyo3_ffi-7abb0685dc83f848.rmeta --extern pyo3_macros=/opt/rustwide/target/debug/deps/libpyo3_macros-f02a23fec8110061.so --extern unindent=/opt/rustwide/target/debug/deps/libunindent-c1fc4609d724e04f.rmeta --cap-lints=forbid --crate-version 0.16.4 --cfg Py_3_6 --cfg Py_3_7 --cfg Py_3_8 --cfg min_const_generics --cfg addr_of` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d2348ead6134359e526bf93d5f0a3c08a93594c479f017768a3e9a7c33309e2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2348ead6134359e526bf93d5f0a3c08a93594c479f017768a3e9a7c33309e2c", kill_on_drop: false }`
[INFO] [stdout] d2348ead6134359e526bf93d5f0a3c08a93594c479f017768a3e9a7c33309e2c