[INFO] fetching crate tracing_facade 0.1.0...
[INFO] documenting tracing_facade-0.1.0 against try#6fd27704e643b25711e6a97ec2b04873b411b97d for pr-96676
[INFO] extracting crate tracing_facade 0.1.0 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate tracing_facade 0.1.0 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 tracing_facade 0.1.0
[INFO] finished tweaking crates.io crate tracing_facade 0.1.0
[INFO] tweaked toml for crates.io crate tracing_facade 0.1.0 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] [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] [stderr]     Blocking waiting for file lock on package cache
[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] c584205954385ea76cdfe17177428822f1b203fb06714a73167319660e573a77
[INFO] running `Command { std: "docker" "start" "-a" "c584205954385ea76cdfe17177428822f1b203fb06714a73167319660e573a77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c584205954385ea76cdfe17177428822f1b203fb06714a73167319660e573a77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c584205954385ea76cdfe17177428822f1b203fb06714a73167319660e573a77", kill_on_drop: false }`
[INFO] [stdout] c584205954385ea76cdfe17177428822f1b203fb06714a73167319660e573a77
[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] 4e72218f0e8144a96bf1b50b34b92edfc12204fa5c8ea0577deec05359abf7e3
[INFO] running `Command { std: "docker" "start" "-a" "4e72218f0e8144a96bf1b50b34b92edfc12204fa5c8ea0577deec05359abf7e3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]  Documenting tracing_facade v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `log`
[INFO] [stdout]  --> src/lib.rs:3:68
[INFO] [stdout]   |
[INFO] [stdout] 3 | //! This crate provides a pluggable API for tracing, akin to what [log] does for logging.
[INFO] [stdout]   |                                                                    ^^^ no item named `log` 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 `tracing_chromium`
[INFO] [stdout]  --> src/lib.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | //!  * [tracing_chromium] - to emit Chromium's trace event format
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^ no item named `tracing_chromium` in scope
[INFO] [stdout]   |
[INFO] [stdout]   = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]  --> src/macros.rs:7:88
[INFO] [stdout]   |
[INFO] [stdout] 7 | /// following. Uses of `trace_begin` and `trace_end` must be balanced; in most cases, [trace_scoped]
[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 `Tracer`
[INFO] [stdout]   --> src/macros.rs:10:78
[INFO] [stdout]    |
[INFO] [stdout] 10 | /// The behavior of Metadata specification depends on the implementation of [Tracer] being used.
[INFO] [stdout]    |                                                                              ^^^^^^ no item named `Tracer` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]   --> src/macros.rs:56:88
[INFO] [stdout]    |
[INFO] [stdout] 56 | /// following. Uses of `trace_begin` and `trace_end` must be balanced; in most cases, [trace_scoped]
[INFO] [stdout]    |                                                                                        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `Tracer`
[INFO] [stdout]   --> src/macros.rs:59:78
[INFO] [stdout]    |
[INFO] [stdout] 59 | /// The behavior of Metadata specification depends on the implementation of [Tracer] being used.
[INFO] [stdout]    |                                                                              ^^^^^^ no item named `Tracer` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro_rules fallback is used during doc link resolution
[INFO] [stdout]    --> src/macros.rs:104:6
[INFO] [stdout]     |
[INFO] [stdout] 104 | /// [trace_scoped] calls [trace_begin], and then constructs a scope guard that calls [trace_end]
[INFO] [stdout]     |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `tracing_facade`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name tracing_facade src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=6a01a00bc4bc3a3e -L dependency=/opt/rustwide/target/debug/deps --extern scopeguard=/opt/rustwide/target/debug/deps/libscopeguard-d180cfcf9f4abf8e.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-21dfb3ceee768f9d.rmeta --cap-lints=forbid --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "4e72218f0e8144a96bf1b50b34b92edfc12204fa5c8ea0577deec05359abf7e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e72218f0e8144a96bf1b50b34b92edfc12204fa5c8ea0577deec05359abf7e3", kill_on_drop: false }`
[INFO] [stdout] 4e72218f0e8144a96bf1b50b34b92edfc12204fa5c8ea0577deec05359abf7e3