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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01So19KjiZnyacdckcxwoMEi","type":"tool_result","content":"page:\n  title: Rust (programming language) - Wikipedia\n  refs: 8590\nno matches for \"designed by\" in snapshot or page text\npage text:\nJump to content\nMain menu\nSearch\nDonate\nCreate account\nLog in\nContents hide\n(Top)\nHistory\nToggle History subsection\nSyntax and features\nToggle Syntax and features subsection\nSafety\nEcosystem\nToggle Ecosystem subsection\nPerformance\nAdoption\nIn academic research\nCommunity\nToggle Community subsection\nSee also\nNotes\nReferences\nToggle References subsection\nExternal links\nRust (programming language)\n53 languages\nArticle\nTalk\nRead\nEdit\nView history\nTools\nAppearance hide\nBirthday mode (Baby Globe)\nDisabled\nEnabled\nLearn more about Birthday mode\nText\nSmall\nStandard\nLarge\nWidth\nStandard\nWide\nColor (beta)\nAutomatic\nLight\nDark\nFrom Wikipedia, the free encyclopedia\nRust\n\nParadigms\tConcurrentfunctionalgenericimperativestructured\nDeveloper\tThe Rust Team\nFirst appeared\tJanuary 19, 2012; 14 years ago\n\nStable release\t\n1.94.1[1]  / March 26, 2026; 7 days ago\n\nTyping discipline\tAffineinferrednominalstaticstrong\nImplementation language\tOCaml (2006–2011)\nRust (2012–present)\nPlatform\tCross-platform[note 1]\nOS\tCross-platform[note 2]\nLicense\tMIT, Apache 2.0[note 3]\nFilename extensions\t.rs, .rlib\nWebsite\trust-lang.org\nInfluenced by\nAlefBETACLUC#C++CycloneElmErlangHaskellHermesLimboMesaNapierNewsqueakNIL[note 4]OCamlRubySatherSchemeStandard MLSwift[7][8]\nInfluenced\nIdris[9]Project Verona[10]SPARK[11]Swift[12]V[13]Zig[14]Gleam[15]\n\nRust is a general-purpose programming language. It is noted for its emphasis on performance, type safety, concurrency, and memory safety.\n\nRust supports multiple programming paradigms. It was influenced by ideas from functional programming, including immutability, higher-order functions, algebraic data types, and pattern matching. It also supports object-oriented programming via structs, enums, traits, and methods. Rust is noted for enforcing memory safety (i.e., that all references point to valid memory) without a conventional garbage collector; instead, memory safety errors and data races are prevented by the \"borrow checker\", which tracks the object lifetime of references at compile time.\n\nSoftware developer Graydon Hoare created Rust in 2006 while working at Mozilla, which officially sponsored the project in 2009. The first stable release, Rust 1.0, was published in May 2015. Following a layoff of Mozilla employees in August 2020, four other companies joined Mozilla in sponsoring Rust through the creation of the Rust Foundation in February 2021.\n\nRust has been adopted by many software projects, especially web services and system software. It has been studied academically and has a growing community of developers.\n\nHistory[edit]\n2006–2009: Early years[edit]\nMozilla Foundation headquarters, 650 Castro Street in Mountain View, California, June 2009\n\n... (74415 chars total, showing first 3000)","is_error":false}]},"parent_tool_use_id":null,"session_id":"c2548bef-fbf3-46f4-a791-ebb2f48e3643","uuid":"12496b3b-76f0-456d-914a-4540e61a3d01","timestamp":"2026-04-04T05:46:10.339Z","tool_use_result":{"stdout":"page:\n  title: Rust (programming language) - Wikipedia\n  refs: 8590\nno matches for \"designed by\" in snapshot or page text\npage text:\nJump to content\nMain menu\nSearch\nDonate\nCreate account\nLog in\nContents hide\n(Top)\nHistory\nToggle History subsection\nSyntax and features\nToggle Syntax and features subsection\nSafety\nEcosystem\nToggle Ecosystem subsection\nPerformance\nAdoption\nIn academic research\nCommunity\nToggle Community subsection\nSee also\nNotes\nReferences\nToggle References subsection\nExternal links\nRust (programming language)\n53 languages\nArticle\nTalk\nRead\nEdit\nView history\nTools\nAppearance hide\nBirthday mode (Baby Globe)\nDisabled\nEnabled\nLearn more about Birthday mode\nText\nSmall\nStandard\nLarge\nWidth\nStandard\nWide\nColor (beta)\nAutomatic\nLight\nDark\nFrom Wikipedia, the free encyclopedia\nRust\n\nParadigms\tConcurrentfunctionalgenericimperativestructured\nDeveloper\tThe Rust Team\nFirst appeared\tJanuary 19, 2012; 14 years ago\n\nStable release\t\n1.94.1[1]  / March 26, 2026; 7 days ago\n\nTyping discipline\tAffineinferrednominalstaticstrong\nImplementation language\tOCaml (2006–2011)\nRust (2012–present)\nPlatform\tCross-platform[note 1]\nOS\tCross-platform[note 2]\nLicense\tMIT, Apache 2.0[note 3]\nFilename extensions\t.rs, .rlib\nWebsite\trust-lang.org\nInfluenced by\nAlefBETACLUC#C++CycloneElmErlangHaskellHermesLimboMesaNapierNewsqueakNIL[note 4]OCamlRubySatherSchemeStandard MLSwift[7][8]\nInfluenced\nIdris[9]Project Verona[10]SPARK[11]Swift[12]V[13]Zig[14]Gleam[15]\n\nRust is a general-purpose programming language. It is noted for its emphasis on performance, type safety, concurrency, and memory safety.\n\nRust supports multiple programming paradigms. It was influenced by ideas from functional programming, including immutability, higher-order functions, algebraic data types, and pattern matching. It also supports object-oriented programming via structs, enums, traits, and methods. Rust is noted for enforcing memory safety (i.e., that all references point to valid memory) without a conventional garbage collector; instead, memory safety errors and data races are prevented by the \"borrow checker\", which tracks the object lifetime of references at compile time.\n\nSoftware developer Graydon Hoare created Rust in 2006 while working at Mozilla, which officially sponsored the project in 2009. The first stable release, Rust 1.0, was published in May 2015. Following a layoff of Mozilla employees in August 2020, four other companies joined Mozilla in sponsoring Rust through the creation of the Rust Foundation in February 2021.\n\nRust has been adopted by many software projects, especially web services and system software. It has been studied academically and has a growing community of developers.\n\nHistory[edit]\n2006–2009: Early years[edit]\nMozilla Foundation headquarters, 650 Castro Street in Mountain View, California, June 2009\n\n... (74415 chars total, showing first 3000)","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false}}
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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01KToPSKKztGT8ii6JpDKMiU","type":"tool_result","content":"page:\n  title: Rust Programming Language\n  refs: 145\nsnapshot (11 matches for \"tagline description language\"):\nuid=3_0 RootWebArea \"Rust Programming Language\" url=\"https://rust-lang.org/\"\n  uid=3_1 navigation\n    uid=3_2 link \"Rust Logo\" url=\"https://rust-lang.org/\"\n      uid=3_3 image \"Rust Logo\" url=\"https://rust-lang.org/static/images/rust-logo-blk.svg\"\n    uid=3_4 link \"Install\" url=\"https://rust-lang.org/tools/install\"\n      uid=3_5 StaticText \"Install\"\n    ...\n      uid=3_13 StaticText \"Governance\"\n    uid=3_14 link \"Community\" url=\"https://rust-lang.org/community\"\n      uid=3_15 StaticText \"Community\"\n    uid=3_16 link \"Blog\" url=\"https://blog.rust-lang.org/\"\n      uid=3_17 StaticText \"Blog\"\n    uid=3_18 StaticText \"Language\"\n    uid=3_19 combobox \"Language\" expandable haspopup=\"menu\" value=\"English (en-US)\"\n      uid=3_20 option \"English (en-US)\" selectable selected value=\"English (en-US)\"\n      uid=3_21 option \"Español (es)\" selectable value=\"Español (es)\"\n      uid=3_22 option \"Français (fr)\" selectable value=\"Français (fr)\"\n      uid=3_23 option \"Italiano (it)\" selectable value=\"Italiano (it)\"\n      uid=3_24 option \"日本語 (ja)\" selectable value=\"日本語 (ja)\"\n    ...\n      uid=3_27 option \"Türkçe (tr)\" selectable value=\"Türkçe (tr)\"\n      uid=3_28 option \"简体中文 (zh-CN)\" selectable value=\"简体中文 (zh-CN)\"\n      uid=3_29 option \"正體中文 (zh-TW)\" selectable value=\"正體中文 (zh-TW)\"\n  uid=3_30 main\n    uid=3_31 heading \"Rust\" level=\"1\"\n    uid=3_32 heading \"A language empowering everyone to build reliable and efficient software.\" level=\"2\"\n    uid=3_33 link \"GET STARTED\" url=\"https://rust-lang.org/learn/get-started\"\n      uid=3_34 StaticText \"GET STARTED\"\n    uid=3_35 link \"Version 1.94.1\" url=\"https://blog.rust-lang.org/releases/latest\"\n      uid=3_36 StaticText \"Version 1.94.1\"\n    uid=3_37 heading \"Why Rust?\" level=\"2\"\n    uid=3_38 heading \"Performance\" level=\"3\"\n    uid=3_39 StaticText \"Rust is blazingly fast and memory-efficient: with no runtime or garbage collector, it can power performance-critical services, run on embedded devices, and easily integrate with other languages.\"\n    uid=3_40 heading \"Reliability\" level=\"3\"\n    uid=3_41 StaticText \"Rust’s rich type system and ownership model guarantee memory-safety and thread-safety — enabling you to eliminate many classes of bugs at compile-time.\"\n    uid=3_42 heading \"Productivity\" level=\"3\"\n    uid=3_43 StaticText \"Rust has great documentation, a friendly compiler with useful error messages, and top-notch tooling — an integrated package manager and build tool, smart multi-editor support with auto-completion and type inspections, an auto-formatter, and more.\"\n    uid=3_44 heading \"Build it in Rust\" level=\"2\"\n    ...\n      uid=3_98 StaticText \"Documentation\"\n    uid=3_99 link \"Rust Forge (Contributor Documentation)\" url=\"http://forge.rust-lang.org/\"\n      uid=3_100 StaticText \"Rust Forge (Contributor Documentation)\"\n    uid=3_101 link \"Ask a Question on the Users Forum\" url=\"https://users.rust-lang.org/\"\n      uid=3_102 StaticText \"Ask a Question on the Users Forum\"\n    uid=3_103 StaticText \"Language\"\n    uid=3_104 combobox \"Language\" expandable haspopup=\"menu\" value=\"English (en-US)\"\n      uid=3_105 option \"English (en-US)\" selectable selected value=\"English (en-US)\"\n      uid=3_106 option \"Español (es)\" selectable value=\"Español (es)\"\n      uid=3_107 option \"Français (fr)\" selectable value=\"Français (fr)\"\n      uid=3_108 option \"Italiano (it)\" selectable value=\"Italiano (it)\"\n      uid=3_109 option \"日本語 (ja)\" selectable value=\"日本語 (ja)\"\n    ...\n      uid=3_125 StaticText \"Privacy Notice\"\n    uid=3_126 link \"All Policies\" url=\"https://rust-lang.org/policies\"\n      uid=3_127 StaticText \"All Policies\"\n    uid=3_128 heading \"Social\" level=\"4\"\n    uid=3_129 link \"Mastodon\" url=\"https://social.rust-lang.org/@rust\"\n      uid=3_130 image \"Mastodon\" description=\"Mastodon\" url=\"https://rust-lang.org/static/images/mastodon.svg\"\n    uid=3_131 link \"Bluesky\" url=\"https://bsky.app/profile/rust-lang.org\"\n      uid=3_132 image \"Bluesky\" description=\"Bluesky\" url=\"https://rust-lang.org/static/images/bluesky.svg\"\n    uid=3_133 link \"youtube logo\" url=\"https://www.youtube.com/channel/UCaYhcUwRBNscFNUKTjgPFiA\"\n      uid=3_134 image \"youtube logo\" description=\"YouTube\" url=\"https://rust-lang.org/static/images/youtube.svg\"\n    uid=3_135 link \"github logo\" url=\"https://github.com/rust-lang\"\n      uid=3_136 image \"github logo\" description=\"GitHub\" url=\"https://rust-lang.org/static/images/github.svg\"\n    uid=3_137 StaticText \"Maintained by the Rust Team. See a bug? \"\n    uid=3_138 link \"File an issue!\" url=\"https://github.com/rust-lang/www.rust-lang.org/issues/new/choose\"\n      uid=3_139 StaticText \"File an issue!\"\n    uid=3_140 StaticText \"Web site built every day at 22:00 UTC\"\n    uid=3_141 StaticText \"Looking for the \"","is_error":false}]},"parent_tool_use_id":null,"session_id":"c2548bef-fbf3-46f4-a791-ebb2f48e3643","uuid":"dcd3a0ab-d628-4f3e-badf-61e90214ce9b","timestamp":"2026-04-04T05:46:12.685Z","tool_use_result":{"stdout":"page:\n  title: Rust Programming Language\n  refs: 145\nsnapshot (11 matches for \"tagline description language\"):\nuid=3_0 RootWebArea \"Rust Programming Language\" url=\"https://rust-lang.org/\"\n  uid=3_1 navigation\n    uid=3_2 link \"Rust Logo\" url=\"https://rust-lang.org/\"\n      uid=3_3 image \"Rust Logo\" url=\"https://rust-lang.org/static/images/rust-logo-blk.svg\"\n    uid=3_4 link \"Install\" url=\"https://rust-lang.org/tools/install\"\n      uid=3_5 StaticText \"Install\"\n    ...\n      uid=3_13 StaticText \"Governance\"\n    uid=3_14 link \"Community\" url=\"https://rust-lang.org/community\"\n      uid=3_15 StaticText \"Community\"\n    uid=3_16 link \"Blog\" url=\"https://blog.rust-lang.org/\"\n      uid=3_17 StaticText \"Blog\"\n    uid=3_18 StaticText \"Language\"\n    uid=3_19 combobox \"Language\" expandable haspopup=\"menu\" value=\"English (en-US)\"\n      uid=3_20 option \"English (en-US)\" selectable selected value=\"English (en-US)\"\n      uid=3_21 option \"Español (es)\" selectable value=\"Español (es)\"\n      uid=3_22 option \"Français (fr)\" selectable value=\"Français (fr)\"\n      uid=3_23 option \"Italiano (it)\" selectable value=\"Italiano (it)\"\n      uid=3_24 option \"日本語 (ja)\" selectable value=\"日本語 (ja)\"\n    ...\n      uid=3_27 option \"Türkçe (tr)\" selectable value=\"Türkçe (tr)\"\n      uid=3_28 option \"简体中文 (zh-CN)\" selectable value=\"简体中文 (zh-CN)\"\n      uid=3_29 option \"正體中文 (zh-TW)\" selectable value=\"正體中文 (zh-TW)\"\n  uid=3_30 main\n    uid=3_31 heading \"Rust\" level=\"1\"\n    uid=3_32 heading \"A language empowering everyone to build reliable and efficient software.\" level=\"2\"\n    uid=3_33 link \"GET STARTED\" url=\"https://rust-lang.org/learn/get-started\"\n      uid=3_34 StaticText \"GET STARTED\"\n    uid=3_35 link \"Version 1.94.1\" url=\"https://blog.rust-lang.org/releases/latest\"\n      uid=3_36 StaticText \"Version 1.94.1\"\n    uid=3_37 heading \"Why Rust?\" level=\"2\"\n    uid=3_38 heading \"Performance\" level=\"3\"\n    uid=3_39 StaticText \"Rust is blazingly fast and memory-efficient: with no runtime or garbage collector, it can power performance-critical services, run on embedded devices, and easily integrate with other languages.\"\n    uid=3_40 heading \"Reliability\" level=\"3\"\n    uid=3_41 StaticText \"Rust’s rich type system and ownership model guarantee memory-safety and thread-safety — enabling you to eliminate many classes of bugs at compile-time.\"\n    uid=3_42 heading \"Productivity\" level=\"3\"\n    uid=3_43 StaticText \"Rust has great documentation, a friendly compiler with useful error messages, and top-notch tooling — an integrated package manager and build tool, smart multi-editor support with auto-completion and type inspections, an auto-formatter, and more.\"\n    uid=3_44 heading \"Build it in Rust\" level=\"2\"\n    ...\n      uid=3_98 StaticText \"Documentation\"\n    uid=3_99 link \"Rust Forge (Contributor Documentation)\" url=\"http://forge.rust-lang.org/\"\n      uid=3_100 StaticText \"Rust Forge (Contributor Documentation)\"\n    uid=3_101 link \"Ask a Question on the Users Forum\" url=\"https://users.rust-lang.org/\"\n      uid=3_102 StaticText \"Ask a Question on the Users Forum\"\n    uid=3_103 StaticText \"Language\"\n    uid=3_104 combobox \"Language\" expandable haspopup=\"menu\" value=\"English (en-US)\"\n      uid=3_105 option \"English (en-US)\" selectable selected value=\"English (en-US)\"\n      uid=3_106 option \"Español (es)\" selectable value=\"Español (es)\"\n      uid=3_107 option \"Français (fr)\" selectable value=\"Français (fr)\"\n      uid=3_108 option \"Italiano (it)\" selectable value=\"Italiano (it)\"\n      uid=3_109 option \"日本語 (ja)\" selectable value=\"日本語 (ja)\"\n    ...\n      uid=3_125 StaticText \"Privacy Notice\"\n    uid=3_126 link \"All Policies\" url=\"https://rust-lang.org/policies\"\n      uid=3_127 StaticText \"All Policies\"\n    uid=3_128 heading \"Social\" level=\"4\"\n    uid=3_129 link \"Mastodon\" url=\"https://social.rust-lang.org/@rust\"\n      uid=3_130 image \"Mastodon\" description=\"Mastodon\" url=\"https://rust-lang.org/static/images/mastodon.svg\"\n    uid=3_131 link \"Bluesky\" url=\"https://bsky.app/profile/rust-lang.org\"\n      uid=3_132 image \"Bluesky\" description=\"Bluesky\" url=\"https://rust-lang.org/static/images/bluesky.svg\"\n    uid=3_133 link \"youtube logo\" url=\"https://www.youtube.com/channel/UCaYhcUwRBNscFNUKTjgPFiA\"\n      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{"type":"result","subtype":"success","is_error":false,"duration_ms":15560,"duration_api_ms":11283,"num_turns":5,"result":"Here are the results from all three sites:\n\n---\n\n**1. Wikipedia — Designer**\nRust was created by **Graydon Hoare** in 2006 while working at Mozilla, which officially sponsored the project in 2009. It is now maintained by **The Rust Team**.\n\n**2. GitHub (rust-lang/rust) — Star Count**\nThe repository has **112k stars**.\n\n**3. rust-lang.org — Tagline**\n> *\"A language empowering everyone to build reliable and efficient software.\"*","stop_reason":"end_turn","session_id":"c2548bef-fbf3-46f4-a791-ebb2f48e3643","total_cost_usd":0.06198165,"usage":{"input_tokens":4,"cache_creation_input_tokens":11445,"cache_read_input_tokens":41903,"output_tokens":432,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":11445,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"},"modelUsage":{"claude-sonnet-4-6":{"inputTokens":4,"outputTokens":432,"cacheReadInputTokens":41903,"cacheCreationInputTokens":11445,"webSearchRequests":0,"costUSD":0.06198165,"contextWindow":200000,"maxOutputTokens":32000}},"permission_denials":[],"fast_mode_state":"off","uuid":"468c469d-325c-422e-a97b-208fa1e49a4c"}
