[INFO] fetching crate pf_observability_core 0.1.0...
[INFO] testing pf_observability_core-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate pf_observability_core 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate pf_observability_core 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate pf_observability_core 0.1.0
[INFO] tweaked toml for crates.io crate pf_observability_core 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pf_observability_core 0.1.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pf_observability_core 0.1.0 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-2026-04-21" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb3dad2096a7d6e9272722f3f94c59c6ab969848754f5f364e765a71687817d0
[INFO] running `Command { std: "docker" "start" "-a" "cb3dad2096a7d6e9272722f3f94c59c6ab969848754f5f364e765a71687817d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb3dad2096a7d6e9272722f3f94c59c6ab969848754f5f364e765a71687817d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb3dad2096a7d6e9272722f3f94c59c6ab969848754f5f364e765a71687817d0", kill_on_drop: false }`
[INFO] [stdout] cb3dad2096a7d6e9272722f3f94c59c6ab969848754f5f364e765a71687817d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee0708f4c5e19f63a6633140ec5ba8b7f923234c65f143e5b8f30746c30ab70e
[INFO] running `Command { std: "docker" "start" "-a" "ee0708f4c5e19f63a6633140ec5ba8b7f923234c65f143e5b8f30746c30ab70e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling zerocopy v0.8.47
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling pf_foundation_utils v0.1.0
[INFO] [stderr]    Compiling web-time v1.1.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling uuid v1.22.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling chrono v0.4.44
[INFO] [stderr]    Compiling pf_observability_core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.31s
[INFO] running `Command { std: "docker" "inspect" "ee0708f4c5e19f63a6633140ec5ba8b7f923234c65f143e5b8f30746c30ab70e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee0708f4c5e19f63a6633140ec5ba8b7f923234c65f143e5b8f30746c30ab70e", kill_on_drop: false }`
[INFO] [stdout] ee0708f4c5e19f63a6633140ec5ba8b7f923234c65f143e5b8f30746c30ab70e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f1416e60d1c08925d105259d271648ecd843193a143d6e54ed566f339b70f62
[INFO] running `Command { std: "docker" "start" "-a" "0f1416e60d1c08925d105259d271648ecd843193a143d6e54ed566f339b70f62", kill_on_drop: false }`
[INFO] [stderr]    Compiling pf_observability_core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `LogLevel`
[INFO] [stdout]  --> examples/standard_logging_demo.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 | use observability_core::{LogLevel, ObservabilityConfig, ObservabilityManager};
[INFO] [stdout]   |                          ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BasicMetricType` and `MetricsEntry`
[INFO] [stdout]  --> examples/basic_metrics_demo.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     BasicMetricType, MetricsEntry, MetricsPort, ObservabilityResult, UnifiedWasmStdoutAdapter,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LogKvExtractor`
[INFO] [stdout]  --> examples/tracing_and_kv_demo.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     LogKvExtractor, ObservabilityConfig, ObservabilityManager, TracingIntegrationBuilder,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.53s
[INFO] running `Command { std: "docker" "inspect" "0f1416e60d1c08925d105259d271648ecd843193a143d6e54ed566f339b70f62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f1416e60d1c08925d105259d271648ecd843193a143d6e54ed566f339b70f62", kill_on_drop: false }`
[INFO] [stdout] 0f1416e60d1c08925d105259d271648ecd843193a143d6e54ed566f339b70f62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f02334b2f47b5013660d43d759dec1a8905cf523ee5ac280da2f3cc563a49aa9
[INFO] running `Command { std: "docker" "start" "-a" "f02334b2f47b5013660d43d759dec1a8905cf523ee5ac280da2f3cc563a49aa9", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `BasicMetricType` and `MetricsEntry`
[INFO] [stderr]  --> examples/basic_metrics_demo.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     BasicMetricType, MetricsEntry, MetricsPort, ObservabilityResult, UnifiedWasmStdoutAdapter,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LogLevel`
[INFO] [stderr]  --> examples/standard_logging_demo.rs:8:26
[INFO] [stderr]   |
[INFO] [stderr] 8 | use observability_core::{LogLevel, ObservabilityConfig, ObservabilityManager};
[INFO] [stderr]   |                          ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LogKvExtractor`
[INFO] [stderr]  --> examples/tracing_and_kv_demo.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     LogKvExtractor, ObservabilityConfig, ObservabilityManager, TracingIntegrationBuilder,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `pf_observability_core` (example "basic_metrics_demo") generated 1 warning (run `cargo fix --example "basic_metrics_demo" -p pf_observability_core` to apply 1 suggestion)
[INFO] [stderr] warning: `pf_observability_core` (example "standard_logging_demo") generated 1 warning (run `cargo fix --example "standard_logging_demo" -p pf_observability_core` to apply 1 suggestion)
[INFO] [stderr] warning: `pf_observability_core` (example "tracing_and_kv_demo") generated 1 warning (run `cargo fix --example "tracing_and_kv_demo" -p pf_observability_core` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/observability_core-3d827d8b8bc10059)
[INFO] [stdout] 
[INFO] [stdout] running 50 tests
[INFO] [stdout] test adapters::tests::directives_from_level ... ok
[INFO] [stdout] test adapters::tests::directives_per_crate ... ok
[INFO] [stdout] test adapters::tests::test_compact_formatter ... ok
[INFO] [stdout] test adapters::tests::test_wasm_stdout_adapter ... ok
[INFO] [stdout] test context::tests::test_scoped_context ... ok
[INFO] [stdout] test adapters::tests::directives_unknown_tokens_ignored ... ok
[INFO] [stdout] test batching::tests::test_batching_config ... ok
[INFO] [stdout] test batching::tests::test_batching_manager ... ok
[INFO] [stdout] test batching::tests::test_memory_efficient_buffer ... ok
[INFO] [stdout] test batching::tests::test_metric_data_creation ... ok
[INFO] [stdout] test batching::tests::test_span_data_creation ... ok
[INFO] [stdout] test batching::tests::test_telemetry_data_size_estimation ... ok
[INFO] [stdout] test context::tests::test_basic_trace_context ... ok
[INFO] [stdout] test context::tests::test_thread_local_context ... ok
[INFO] [stdout] test context::tests::test_trace_state_management ... ok
[INFO] [stdout] test domain::tests::test_processor_chain ... ok
[INFO] [stdout] test error::tests::test_result_type_alias ... ok
[INFO] [stdout] test error::tests::test_each_variant_constructor_and_display ... ok
[INFO] [stdout] test context::tests::test_w3c_trace_context_creation ... ok
[INFO] [stdout] test domain::tests::test_level_filter ... ok
[INFO] [stdout] test context::tests::test_w3c_trace_context_child ... ok
[INFO] [stdout] test error::tests::test_error_is_clone_and_debug ... ok
[INFO] [stdout] test adapters::tests::test_json_formatter ... ok
[INFO] [stdout] test domain::tests::test_context_enricher ... ok
[INFO] [stdout] test context::tests::test_traceparent_parsing ... ok
[INFO] [stdout] test adapters::tests::directives_empty_string ... ok
[INFO] [stdout] test noop::tests::test_noop_structured_logger ... ok
[INFO] [stdout] test error::tests::test_constructor_accepts_string_and_str ... ok
[INFO] [stdout] test adapters::tests::directives_simple_level ... ok
[INFO] [stdout] test context::tests::test_traceparent_generation ... ok
[INFO] [stdout] test ports::tests::test_metrics_batch_empty_is_ok ... ok
[INFO] [stdout] test ports::tests::test_standard_logging_port_initialize_and_enabled ... ok
[INFO] [stdout] test ports::tests::test_transport_batch_default_calls_transport_per_entry ... ok
[INFO] [stdout] test ports::tests::test_transport_batch_empty_is_ok ... ok
[INFO] [stdout] test extension::tests::test_config_validation ... ok
[INFO] [stdout] test ports::tests::test_context_port_add_get_remove_clear ... ok
[INFO] [stdout] test ports::tests::test_formatter_port_produces_valid_json ... ok
[INFO] [stdout] test extension::tests::test_manager_capabilities ... ok
[INFO] [stdout] test extension::tests::test_manager_creation ... ok
[INFO] [stdout] test extension::tests::test_manager_default ... ok
[INFO] [stdout] test extension::tests::test_observability_config_default ... ok
[INFO] [stdout] test noop::tests::test_macros_compile ... ok
[INFO] [stdout] test extension::tests::test_config_parse_level ... ok
[INFO] [stdout] test noop::tests::test_noop_metrics_collector ... ok
[INFO] [stdout] test noop::tests::test_noop_plugin_zero_cost ... ok
[INFO] [stdout] test ports::tests::test_metrics_batch_routes_by_metric_type ... ok
[INFO] [stdout] test traits::tests::span_guard_drop_calls_end_span_once ... ok
[INFO] [stdout] test error::tests::test_from_serde_json_error ... ok
[INFO] [stdout] test traits::tests::span_guard_no_op_is_safe ... ok
[INFO] [stdout] test ports::tests::test_batching_port_add_size_flush ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 50 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests observability_core
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f02334b2f47b5013660d43d759dec1a8905cf523ee5ac280da2f3cc563a49aa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f02334b2f47b5013660d43d759dec1a8905cf523ee5ac280da2f3cc563a49aa9", kill_on_drop: false }`
[INFO] [stdout] f02334b2f47b5013660d43d759dec1a8905cf523ee5ac280da2f3cc563a49aa9
