[INFO] fetching crate pro_lang_ir 3.0.0-rc2...
[INFO] documenting pro_lang_ir-3.0.0-rc2 against try#6fd27704e643b25711e6a97ec2b04873b411b97d for pr-96676
[INFO] extracting crate pro_lang_ir 3.0.0-rc2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate pro_lang_ir 3.0.0-rc2 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 pro_lang_ir 3.0.0-rc2
[INFO] finished tweaking crates.io crate pro_lang_ir 3.0.0-rc2
[INFO] tweaked toml for crates.io crate pro_lang_ir 3.0.0-rc2 written to /workspace/builds/worker-2/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 2c62d5bd5da6f2692c6c2cd9ae53540d68de1e4a848f599d0571c370d161efa3
[INFO] running `Command { std: "docker" "start" "-a" "2c62d5bd5da6f2692c6c2cd9ae53540d68de1e4a848f599d0571c370d161efa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c62d5bd5da6f2692c6c2cd9ae53540d68de1e4a848f599d0571c370d161efa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c62d5bd5da6f2692c6c2cd9ae53540d68de1e4a848f599d0571c370d161efa3", kill_on_drop: false }`
[INFO] [stdout] 2c62d5bd5da6f2692c6c2cd9ae53540d68de1e4a848f599d0571c370d161efa3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 86f0a6d8dfa3cac7d8fef40f989a2f6c07ecf80889d1e3cb31917c0255a93cad
[INFO] running `Command { std: "docker" "start" "-a" "86f0a6d8dfa3cac7d8fef40f989a2f6c07ecf80889d1e3cb31917c0255a93cad", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking unicode-xid v0.2.3
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking blake2 v0.9.2
[INFO] [stderr]  Documenting pro_lang_ir v3.0.0-rc2 (/opt/rustwide/workdir)
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]   --> src/error.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | /// than [`format_err`].
[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 `pro_lang_ir`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name pro_lang_ir src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="std"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5746fa3b124d30e9 -L dependency=/opt/rustwide/target/debug/deps --extern blake2=/opt/rustwide/target/debug/deps/libblake2-1e8f30983e625d40.rmeta --extern either=/opt/rustwide/target/debug/deps/libeither-6623be7023c5be24.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-7fc7fed4ede095ae.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-eedf5e06566903f0.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-723d1542d01fe3eb.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-9e88cd0bab8e5412.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-7900d2214e6c299d.rmeta --cap-lints=forbid --crate-version 3.0.0-rc2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "86f0a6d8dfa3cac7d8fef40f989a2f6c07ecf80889d1e3cb31917c0255a93cad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86f0a6d8dfa3cac7d8fef40f989a2f6c07ecf80889d1e3cb31917c0255a93cad", kill_on_drop: false }`
[INFO] [stdout] 86f0a6d8dfa3cac7d8fef40f989a2f6c07ecf80889d1e3cb31917c0255a93cad