[INFO] fetching crate tokio-metrics-collector 0.3.1...
[INFO] testing tokio-metrics-collector-0.3.1 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate tokio-metrics-collector 0.3.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate tokio-metrics-collector 0.3.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate tokio-metrics-collector 0.3.1
[INFO] tweaked toml for crates.io crate tokio-metrics-collector 0.3.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tokio-metrics-collector 0.3.1 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tokio-metrics-collector 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c21ab6d4adffa7f6a33b6cb6d4056ef41a58781bae6185177e4c8fbd401a040
[INFO] running `Command { std: "docker" "start" "-a" "0c21ab6d4adffa7f6a33b6cb6d4056ef41a58781bae6185177e4c8fbd401a040", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c21ab6d4adffa7f6a33b6cb6d4056ef41a58781bae6185177e4c8fbd401a040", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c21ab6d4adffa7f6a33b6cb6d4056ef41a58781bae6185177e4c8fbd401a040", kill_on_drop: false }`
[INFO] [stdout] 0c21ab6d4adffa7f6a33b6cb6d4056ef41a58781bae6185177e4c8fbd401a040
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ac3be47fb411453c011e7e2468dd52ecaee7480312534942449a2a36e3f5f12
[INFO] running `Command { std: "docker" "start" "-a" "0ac3be47fb411453c011e7e2468dd52ecaee7480312534942449a2a36e3f5f12", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling protobuf v3.7.2
[INFO] [stderr]    Compiling prometheus v0.14.0
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling socket2 v0.5.5
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling tokio v1.44.1
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling tokio-stream v0.1.12
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling protobuf-support v3.7.2
[INFO] [stderr]    Compiling tokio-metrics v0.4.0
[INFO] [stderr]    Compiling tokio-metrics-collector v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `tokio_unstable`
[INFO] [stdout]   --> src/lib.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     all(tokio_unstable, feature = "rt"),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tokio_unstable)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tokio_unstable)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `tokio_unstable`
[INFO] [stdout]    --> src/lib.rs:99:23
[INFO] [stdout]     |
[INFO] [stdout]  99 |               #[cfg(all(tokio_unstable, feature = "rt"))]
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 | / cfg_rt! {
[INFO] [stdout] 107 | |     mod runtime;
[INFO] [stdout] 108 | |     pub use runtime::default_collector as default_runtime_collector;
[INFO] [stdout] 109 | |     pub use runtime::RuntimeCollector;
[INFO] [stdout] 110 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tokio_unstable)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tokio_unstable)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `cfg_rt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.46s
[INFO] running `Command { std: "docker" "inspect" "0ac3be47fb411453c011e7e2468dd52ecaee7480312534942449a2a36e3f5f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ac3be47fb411453c011e7e2468dd52ecaee7480312534942449a2a36e3f5f12", kill_on_drop: false }`
[INFO] [stdout] 0ac3be47fb411453c011e7e2468dd52ecaee7480312534942449a2a36e3f5f12
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 966e85fce71f760e404650f7473c69a73f81086534d22410387792193a33fd42
[INFO] running `Command { std: "docker" "start" "-a" "966e85fce71f760e404650f7473c69a73f81086534d22410387792193a33fd42", kill_on_drop: false }`
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling httpdate v1.0.2
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling thread_local v1.1.7
[INFO] [stderr]    Compiling http v1.0.0
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling prometheus v0.14.0
[INFO] [stderr]    Compiling tracing v0.1.38
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling tokio v1.44.1
[INFO] [stderr]    Compiling tracing-subscriber v0.3.19
[INFO] [stderr]    Compiling http-body v1.0.0
[INFO] [stderr]    Compiling http-body-util v0.1.0
[INFO] [stderr]    Compiling axum-core v0.5.0
[INFO] [stderr]    Compiling serde_path_to_error v0.1.11
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling tokio-stream v0.1.12
[INFO] [stderr]    Compiling hyper v1.6.0
[INFO] [stderr]    Compiling tower v0.5.2
[INFO] [stderr]    Compiling tokio-metrics v0.4.0
[INFO] [stderr]    Compiling tokio-metrics-collector v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `tokio_unstable`
[INFO] [stdout]   --> src/lib.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     all(tokio_unstable, feature = "rt"),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tokio_unstable)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tokio_unstable)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `tokio_unstable`
[INFO] [stdout]    --> src/lib.rs:99:23
[INFO] [stdout]     |
[INFO] [stdout]  99 |               #[cfg(all(tokio_unstable, feature = "rt"))]
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 | / cfg_rt! {
[INFO] [stdout] 107 | |     mod runtime;
[INFO] [stdout] 108 | |     pub use runtime::default_collector as default_runtime_collector;
[INFO] [stdout] 109 | |     pub use runtime::RuntimeCollector;
[INFO] [stdout] 110 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tokio_unstable)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tokio_unstable)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `cfg_rt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hyper-util v0.1.10
[INFO] [stderr]    Compiling axum v0.8.1
[INFO] [stdout] warning: unexpected `cfg` condition name: `tokio_unstable`
[INFO] [stdout]   --> src/lib.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     all(tokio_unstable, feature = "rt"),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tokio_unstable)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tokio_unstable)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `tokio_unstable`
[INFO] [stdout]    --> src/lib.rs:99:23
[INFO] [stdout]     |
[INFO] [stdout]  99 |               #[cfg(all(tokio_unstable, feature = "rt"))]
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 | / cfg_rt! {
[INFO] [stdout] 107 | |     mod runtime;
[INFO] [stdout] 108 | |     pub use runtime::default_collector as default_runtime_collector;
[INFO] [stdout] 109 | |     pub use runtime::RuntimeCollector;
[INFO] [stdout] 110 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tokio_unstable)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tokio_unstable)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `cfg_rt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `default_runtime_collector` in crate `tokio_metrics_collector`
[INFO] [stdout]    --> examples/server.rs:13:38
[INFO] [stdout]     |
[INFO] [stdout]  13 |             tokio_metrics_collector::default_runtime_collector(),
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: a function with a similar name exists: `default_task_collector`
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/task.rs:475:1
[INFO] [stdout]     |
[INFO] [stdout] 475 | pub fn default_collector() -> &'static TaskCollector {
[INFO] [stdout]     | ---------------------------------------------------- similarly named function `default_task_collector` defined here
[INFO] [stdout]     |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]    --> /opt/rustwide/workdir/src/lib.rs:108:43
[INFO] [stdout]     |
[INFO] [stdout] 106 | / cfg_rt! {
[INFO] [stdout] 107 | |     mod runtime;
[INFO] [stdout] 108 | |     pub use runtime::default_collector as default_runtime_collector;
[INFO] [stdout]     | |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 109 | |     pub use runtime::RuntimeCollector;
[INFO] [stdout] 110 | | }
[INFO] [stdout]     | |_- the item is gated here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tokio-metrics-collector` (example "server") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `monitor`
[INFO] [stdout]    --> src/task.rs:486:13
[INFO] [stdout]     |
[INFO] [stdout] 486 |         let monitor = tokio_metrics::TaskMonitor::new();
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_monitor`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "966e85fce71f760e404650f7473c69a73f81086534d22410387792193a33fd42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "966e85fce71f760e404650f7473c69a73f81086534d22410387792193a33fd42", kill_on_drop: false }`
[INFO] [stdout] 966e85fce71f760e404650f7473c69a73f81086534d22410387792193a33fd42
