[INFO] fetching crate exmex 0.16.0...
[INFO] documenting exmex-0.16.0 against try#6fd27704e643b25711e6a97ec2b04873b411b97d for pr-96676
[INFO] extracting crate exmex 0.16.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate exmex 0.16.0 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 exmex 0.16.0
[INFO] finished tweaking crates.io crate exmex 0.16.0
[INFO] tweaked toml for crates.io crate exmex 0.16.0 written to /workspace/builds/worker-7/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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 8cea225432a3c99628e3166f0ecabc4986f6a5a291db2cc747f434e2dd4e5105
[INFO] running `Command { std: "docker" "start" "-a" "8cea225432a3c99628e3166f0ecabc4986f6a5a291db2cc747f434e2dd4e5105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cea225432a3c99628e3166f0ecabc4986f6a5a291db2cc747f434e2dd4e5105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cea225432a3c99628e3166f0ecabc4986f6a5a291db2cc747f434e2dd4e5105", kill_on_drop: false }`
[INFO] [stdout] 8cea225432a3c99628e3166f0ecabc4986f6a5a291db2cc747f434e2dd4e5105
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] bdf8886a823bcb2f38d5efefbee8c8b690def3a5a1af43c6280dec8131858d79
[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" "bdf8886a823bcb2f38d5efefbee8c8b690def3a5a1af43c6280dec8131858d79", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]  Documenting exmex v0.16.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]   --> src/operators.rs:20:91
[INFO] [stdout]    |
[INFO] [stdout] 20 | /// or constants such as `π`. To use custom operators, see also the macro [`ops_factory`](ops_factory).
[INFO] [stdout]    |                                                                                           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(rustdoc::macro_rules_fallback)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `parse_with_number_pattern`
[INFO] [stdout]    --> src/parser.rs:110:39
[INFO] [stdout]     |
[INFO] [stdout] 110 | /// See [`parse_with_number_pattern`](parse_with_number_pattern)
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^ no item named `parse_with_number_pattern` 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: unresolved link to `parse_with_number_pattern`
[INFO] [stdout]    --> src/parser.rs:331:39
[INFO] [stdout]     |
[INFO] [stdout] 331 | /// See [`parse_with_number_pattern`](parse_with_number_pattern)
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^ no item named `parse_with_number_pattern` in scope
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[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 `exmex`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name exmex src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0ad6af1ee045d4d8 -L dependency=/opt/rustwide/target/debug/deps --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-3ab14ef94a1f89cf.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-488546294c7e19da.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-9e88cd0bab8e5412.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-61e548ea0cf3be6d.rmeta --cap-lints=forbid --crate-version 0.16.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "bdf8886a823bcb2f38d5efefbee8c8b690def3a5a1af43c6280dec8131858d79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdf8886a823bcb2f38d5efefbee8c8b690def3a5a1af43c6280dec8131858d79", kill_on_drop: false }`
[INFO] [stdout] bdf8886a823bcb2f38d5efefbee8c8b690def3a5a1af43c6280dec8131858d79