[INFO] fetching crate simple-metrics 0.4.1...
[INFO] testing simple-metrics-0.4.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate simple-metrics 0.4.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate simple-metrics 0.4.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate simple-metrics 0.4.1
[INFO] tweaked toml for crates.io crate simple-metrics 0.4.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate simple-metrics 0.4.1 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 simple-metrics 0.4.1 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-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 31114b95dd0318f4ee0aeab04683620a17229e8099171b7b3e6baf43b24f972e
[INFO] running `Command { std: "docker" "start" "-a" "31114b95dd0318f4ee0aeab04683620a17229e8099171b7b3e6baf43b24f972e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31114b95dd0318f4ee0aeab04683620a17229e8099171b7b3e6baf43b24f972e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31114b95dd0318f4ee0aeab04683620a17229e8099171b7b3e6baf43b24f972e", kill_on_drop: false }`
[INFO] [stdout] 31114b95dd0318f4ee0aeab04683620a17229e8099171b7b3e6baf43b24f972e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 977c706047934d36c5b160d2ba94a6318d002c707ba449e65ada03ade0723a62
[INFO] running `Command { std: "docker" "start" "-a" "977c706047934d36c5b160d2ba94a6318d002c707ba449e65ada03ade0723a62", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-metrics v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/labels.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn iter(&self) -> btree_map::Iter<String, String> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn iter(&self) -> btree_map::Iter<'_, String, String> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/labels.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn keys(&self) -> btree_map::Keys<String, String> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn keys(&self) -> btree_map::Keys<'_, String, String> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "977c706047934d36c5b160d2ba94a6318d002c707ba449e65ada03ade0723a62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "977c706047934d36c5b160d2ba94a6318d002c707ba449e65ada03ade0723a62", kill_on_drop: false }`
[INFO] [stdout] 977c706047934d36c5b160d2ba94a6318d002c707ba449e65ada03ade0723a62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e924e563e2850c1d8153760fa38f40d3d33ccf14daf6c796c22ce79683739f3d
[INFO] running `Command { std: "docker" "start" "-a" "e924e563e2850c1d8153760fa38f40d3d33ccf14daf6c796c22ce79683739f3d", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/labels.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn iter(&self) -> btree_map::Iter<String, String> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn iter(&self) -> btree_map::Iter<'_, String, String> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/labels.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn keys(&self) -> btree_map::Keys<String, String> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn keys(&self) -> btree_map::Keys<'_, String, String> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling simple-metrics v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/labels.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn iter(&self) -> btree_map::Iter<String, String> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn iter(&self) -> btree_map::Iter<'_, String, String> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/labels.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn keys(&self) -> btree_map::Keys<String, String> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn keys(&self) -> btree_map::Keys<'_, String, String> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `Command { std: "docker" "inspect" "e924e563e2850c1d8153760fa38f40d3d33ccf14daf6c796c22ce79683739f3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e924e563e2850c1d8153760fa38f40d3d33ccf14daf6c796c22ce79683739f3d", kill_on_drop: false }`
[INFO] [stdout] e924e563e2850c1d8153760fa38f40d3d33ccf14daf6c796c22ce79683739f3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] b19dbee75c5203e6504942bcdde123a5fba18ad182b1352dd8e3ef457e01ccb3
[INFO] running `Command { std: "docker" "start" "-a" "b19dbee75c5203e6504942bcdde123a5fba18ad182b1352dd8e3ef457e01ccb3", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/labels.rs:60:17
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn iter(&self) -> btree_map::Iter<String, String> {
[INFO] [stderr]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn iter(&self) -> btree_map::Iter<'_, String, String> {
[INFO] [stderr]    |                                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/labels.rs:64:17
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn keys(&self) -> btree_map::Keys<String, String> {
[INFO] [stderr]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn keys(&self) -> btree_map::Keys<'_, String, String> {
[INFO] [stderr]    |                                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: `simple-metrics` (lib) generated 2 warnings (run `cargo fix --lib -p simple-metrics` to apply 2 suggestions)
[INFO] [stderr] warning: `simple-metrics` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/simple_metrics-d66da5627e721006)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test labels_builder::tests::labels_from_tuple_list ... ok
[INFO] [stdout] test labels::tests::labels_new ... ok
[INFO] [stdout] test labels_builder::tests::labels_with_many ... ok
[INFO] [stdout] test labels_builder::tests::labels_with ... ok
[INFO] [stdout] test labels_builder::tests::simple ... ok
[INFO] [stdout] test macros::tests::smoke ... ok
[INFO] [stdout] test store::tests::bake_static_labels ... ok
[INFO] [stdout] test tests::simple ... ok
[INFO] [stdout] test tests::simple_with_label_group ... ok
[INFO] [stdout] test tests::complex ... ok
[INFO] [stdout] test tests::invalid_metric_name ... ok
[INFO] [stdout] test tests::simple_escape_label_values ... ok
[INFO] [stdout] test tests::simple_with_labels_chain ... ok
[INFO] [stdout] test tests::simple_with_namespace ... ok
[INFO] [stderr]      Running unittests examples/simple.rs (/opt/rustwide/target/debug/examples/simple-a1536e68518624ca)
[INFO] [stdout] test labels_builder::tests::invalid_labels ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] # HELP namespace_service_health service health (1 or 0)
[INFO] [stdout] # TYPE namespace_service_health gauge
[INFO] [stdout] namespace_service_health{service_name="service01"} 0
[INFO] [stdout] 
[INFO] [stdout] # HELP namespace_internal_data some exported value
[INFO] [stdout] # TYPE namespace_internal_data gauge
[INFO] [stdout] namespace_internal_data{service_name="service01"} 100
[INFO] [stderr]    Doc-tests simple_metrics
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/labels_builder.rs - labels_builder::LabelsBuilder (line 36) ... ok
[INFO] [stdout] test src/labels.rs - labels::Labels (line 10) ... ok
[INFO] [stdout] test src/labels.rs - labels::Labels::builder (line 34) ... ok
[INFO] [stdout] test src/store.rs - store::MetricStore<K>::add_with_common_labels (line 67) ... ok
[INFO] [stdout] test src/labels_builder.rs - labels_builder::LabelsBuilder (line 45) ... ok
[INFO] [stdout] test src/labels_builder.rs - labels_builder::LabelsBuilder (line 53) ... ok
[INFO] [stdout] test src/labels_builder.rs - labels_builder::LabelsBuilder (line 25) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.88s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b19dbee75c5203e6504942bcdde123a5fba18ad182b1352dd8e3ef457e01ccb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b19dbee75c5203e6504942bcdde123a5fba18ad182b1352dd8e3ef457e01ccb3", kill_on_drop: false }`
[INFO] [stdout] b19dbee75c5203e6504942bcdde123a5fba18ad182b1352dd8e3ef457e01ccb3
