[INFO] fetching crate prometheus-serve-metrics 0.1.4...
[INFO] checking prometheus-serve-metrics-0.1.4 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate prometheus-serve-metrics 0.1.4 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate prometheus-serve-metrics 0.1.4
[INFO] finished tweaking crates.io crate prometheus-serve-metrics 0.1.4
[INFO] tweaked toml for crates.io crate prometheus-serve-metrics 0.1.4 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate prometheus-serve-metrics 0.1.4 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 140 packages to latest compatible versions
[INFO] [stderr]       Adding hyper v0.14.32 (available: v1.8.0)
[INFO] [stderr]       Adding opentelemetry v0.17.0 (available: v0.31.0)
[INFO] [stderr]       Adding opentelemetry-prometheus v0.10.0 (available: v0.29.1)
[INFO] [stderr]       Adding prometheus v0.13.4 (available: v0.14.0)
[INFO] [stderr]       Adding tracing-subscriber v0.2.25 (available: v0.3.20)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2dd9d1ee1f9959d494ce1666afb7b42d06960cbfb14c38b1c836c3d1d622df6
[INFO] running `Command { std: "docker" "start" "-a" "b2dd9d1ee1f9959d494ce1666afb7b42d06960cbfb14c38b1c836c3d1d622df6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2dd9d1ee1f9959d494ce1666afb7b42d06960cbfb14c38b1c836c3d1d622df6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2dd9d1ee1f9959d494ce1666afb7b42d06960cbfb14c38b1c836c3d1d622df6", kill_on_drop: false }`
[INFO] [stdout] b2dd9d1ee1f9959d494ce1666afb7b42d06960cbfb14c38b1c836c3d1d622df6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6aacdda871bfae4dda767108bd83ca8126ac659b63406619edd5d3861df4f173
[INFO] running `Command { std: "docker" "start" "-a" "6aacdda871bfae4dda767108bd83ca8126ac659b63406619edd5d3861df4f173", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling protobuf v2.28.0
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling prometheus v0.13.4
[INFO] [stderr]     Checking dashmap v4.0.2
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]     Checking chrono v0.4.42
[INFO] [stderr]     Checking crossbeam-channel v0.5.15
[INFO] [stderr]     Checking tracing-log v0.1.4
[INFO] [stderr]     Checking tracing-serde v0.1.3
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking pin-project v1.1.10
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking opentelemetry v0.17.0
[INFO] [stderr]     Checking opentelemetry-prometheus v0.10.0
[INFO] [stderr]     Checking tokio-util v0.7.17
[INFO] [stderr]     Checking h2 v0.3.27
[INFO] [stderr]     Checking hyper v0.14.32
[INFO] [stderr]     Checking prometheus-serve-metrics v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<service::util::ServiceFn<{closure@src/lib.rs:63:57: 63:67}, Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:63:24
[INFO] [stdout]    |
[INFO] [stdout] 63 |             async move { Ok::<_, Infallible>(service_fn(move |req| metrics(req, state.clone()))) }
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<service::util::ServiceFn<{closure@src/lib.rs:63:57: 63:67}, Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:63:26
[INFO] [stdout]    |
[INFO] [stdout] 63 |             async move { Ok::<_, Infallible>(service_fn(move |req| metrics(req, state.clone()))) }
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prometheus-serve-metrics` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<service::util::ServiceFn<{closure@src/lib.rs:63:57: 63:67}, Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:63:24
[INFO] [stdout]    |
[INFO] [stdout] 63 |             async move { Ok::<_, Infallible>(service_fn(move |req| metrics(req, state.clone()))) }
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<service::util::ServiceFn<{closure@src/lib.rs:63:57: 63:67}, Body>, Infallible>
[INFO] [stdout]   --> src/lib.rs:63:26
[INFO] [stdout]    |
[INFO] [stdout] 63 |             async move { Ok::<_, Infallible>(service_fn(move |req| metrics(req, state.clone()))) }
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prometheus-serve-metrics` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "6aacdda871bfae4dda767108bd83ca8126ac659b63406619edd5d3861df4f173", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aacdda871bfae4dda767108bd83ca8126ac659b63406619edd5d3861df4f173", kill_on_drop: false }`
[INFO] [stdout] 6aacdda871bfae4dda767108bd83ca8126ac659b63406619edd5d3861df4f173