Implementing "<test_binary> --list --format json" for use by IDE test explorers / runners Fixes #107307 PR 1 of 2 - wiring up just the new information + implement the command line changes i.e. --format json + tests upcoming: PR 2 of 2 - clean up "#[cfg(not(bootstrap))]" from PR 1 As per the discussions on - MCP: https://rust-lang.zulipchat.com/#narrow/stream/233931-t-compiler.2Fmajor-changes/topic/Implementing.20.22.3Ctest_binary.3E.20--list.20--form.E2.80.A6.20compiler-team.23592/near/328747548 - preRFC: https://internals.rust-lang.org/t/pre-rfc-implementing-test-binary-list-format-json-for-use-by-ide-test-explorers-runners/18308 - FYI on Discord: https://discord.com/channels/442252698964721669/459149169546887178/1075581549409484820
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