[INFO] fetching crate metrics-prometheus 0.5.0...
[INFO] documenting metrics-prometheus-0.5.0 against master#ef324565d071c6d7e2477a195648549e33d6a465 for pr-121659-bump-pulldown-cmark
[INFO] extracting crate metrics-prometheus 0.5.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate metrics-prometheus 0.5.0 on toolchain ef324565d071c6d7e2477a195648549e33d6a465
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ef324565d071c6d7e2477a195648549e33d6a465" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metrics-prometheus 0.5.0
[INFO] finished tweaking crates.io crate metrics-prometheus 0.5.0
[INFO] tweaked toml for crates.io crate metrics-prometheus 0.5.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ef324565d071c6d7e2477a195648549e33d6a465" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ef324565d071c6d7e2477a195648549e33d6a465" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sealed v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ef324565d071c6d7e2477a195648549e33d6a465" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c81666b0e69742dee74aeb3306ed277ff78fb329afdeaf8e4db400fce29b49c
[INFO] running `Command { std: "docker" "start" "-a" "1c81666b0e69742dee74aeb3306ed277ff78fb329afdeaf8e4db400fce29b49c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c81666b0e69742dee74aeb3306ed277ff78fb329afdeaf8e4db400fce29b49c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c81666b0e69742dee74aeb3306ed277ff78fb329afdeaf8e4db400fce29b49c", kill_on_drop: false }`
[INFO] [stdout] 1c81666b0e69742dee74aeb3306ed277ff78fb329afdeaf8e4db400fce29b49c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTFLAGS=--cap-lints=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ef324565d071c6d7e2477a195648549e33d6a465" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 991660de9f242421f1e2ad8dea36077b505e05acbbc3abc87c85e1659414a97a
[INFO] running `Command { std: "docker" "start" "-a" "991660de9f242421f1e2ad8dea36077b505e05acbbc3abc87c85e1659414a97a", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling prometheus v0.13.3
[INFO] [stderr]     Checking arc-swap v1.7.0
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]     Checking hashbrown v0.13.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling metrics-macros v0.7.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]    Compiling sealed v0.5.0
[INFO] [stderr]     Checking metrics v0.21.1
[INFO] [stderr]     Checking metrics-util v0.15.1
[INFO] [stderr]     Checking thiserror v1.0.57
[INFO] [stderr]  Documenting metrics-prometheus v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `unused_tuple_struct_fields` has been renamed to `dead_code`
[INFO] [stdout]    --> src/lib.rs:169:5
[INFO] [stdout]     |
[INFO] [stdout] 169 |     unused_tuple_struct_fields,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `dead_code`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.66s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/metrics_prometheus/index.html
[INFO] running `Command { std: "docker" "inspect" "991660de9f242421f1e2ad8dea36077b505e05acbbc3abc87c85e1659414a97a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "991660de9f242421f1e2ad8dea36077b505e05acbbc3abc87c85e1659414a97a", kill_on_drop: false }`
[INFO] [stdout] 991660de9f242421f1e2ad8dea36077b505e05acbbc3abc87c85e1659414a97a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ef324565d071c6d7e2477a195648549e33d6a465" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] afbf4b0e2b0895a5d22c559c3f3b27ed2d6878ef7288d972d94cb062239d71f1
[INFO] running `Command { std: "docker" "start" "-a" "afbf4b0e2b0895a5d22c559c3f3b27ed2d6878ef7288d972d94cb062239d71f1", kill_on_drop: false }`
[INFO] [stderr]  Documenting metrics-prometheus v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `unused_tuple_struct_fields` has been renamed to `dead_code`
[INFO] [stdout]    --> src/lib.rs:169:5
[INFO] [stdout]     |
[INFO] [stdout] 169 |     unused_tuple_struct_fields,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `dead_code`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/metrics_prometheus/index.html
[INFO] running `Command { std: "docker" "inspect" "afbf4b0e2b0895a5d22c559c3f3b27ed2d6878ef7288d972d94cb062239d71f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afbf4b0e2b0895a5d22c559c3f3b27ed2d6878ef7288d972d94cb062239d71f1", kill_on_drop: false }`
[INFO] [stdout] afbf4b0e2b0895a5d22c559c3f3b27ed2d6878ef7288d972d94cb062239d71f1