The census matched braces over raw source, so a `{` inside a string literal unbalanced the count and cut the test body short. `test_find_ellipses_patterns_leftover_brace_error_does_not_echo_input` was reported as assertionless because its input — `"http://:brace-secret@server/{1...2}}"` — ended the body before the `assert!` two lines below it.
Brace matching now runs over a literal-stripped view. The stripper carries state across lines, because the JSON and `r#"..."#` fixtures these tests are built from routinely span several; a per-line version falls out of phase on the first multi-line string and truncates far more than it fixes. Raw strings are closed on their own hash count, and a lone `'` is left alone so a lifetime (`&'a str`) is not mistaken for a char literal.
The candidate count is unchanged at 15, which is the interesting part: one entry left and one arrived. `utils/src/string.rs:942` drops out, correctly — it does assert. `io-metrics/src/lib.rs:3308` appears, also correctly — `test_record_get_object_path_and_stage` makes twenty-odd `record_*` calls and asserts nothing, the same shape #6238 fixed elsewhere in that file. It had been hidden behind a truncated body.
Refs backlog#1836
* test(io-metrics): assert lib.rs record helper emissions
The 29 assertion-less record_* smoke tests in io-metrics/src/lib.rs called
their helpers and checked nothing; because METRICS_ENABLED defaults to
false they did not even reach the emission bodies. Replace them with six
DebuggingRecorder tests that enable the gate, pin every metric name the
helpers own, and pin the derived values, branch selection and label
mapping (rustfs/backlog#1836).
* test(tooling): anchor assertless-census delegation tokens to name segments
Zhengchao An