[INFO] cloning repository https://github.com/Greybox-Labs/claude-metaprompting
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Greybox-Labs/claude-metaprompting" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGreybox-Labs%2Fclaude-metaprompting", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGreybox-Labs%2Fclaude-metaprompting'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a43e37d8cc1983611a0559e352ae3d295829dc24
[INFO] checking Greybox-Labs/claude-metaprompting/a43e37d8cc1983611a0559e352ae3d295829dc24 against master#31a9463c6e2794a59ce57a8f37abc6966afc2a58 for pr-156807
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGreybox-Labs%2Fclaude-metaprompting" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Greybox-Labs/claude-metaprompting
[INFO] finished tweaking git repo https://github.com/Greybox-Labs/claude-metaprompting
[INFO] tweaked toml for git repo https://github.com/Greybox-Labs/claude-metaprompting written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Greybox-Labs/claude-metaprompting on toolchain 31a9463c6e2794a59ce57a8f37abc6966afc2a58
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+31a9463c6e2794a59ce57a8f37abc6966afc2a58" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Greybox-Labs/claude-metaprompting 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" "+31a9463c6e2794a59ce57a8f37abc6966afc2a58" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "+31a9463c6e2794a59ce57a8f37abc6966afc2a58" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 797a443b8799da9fcde7144b6c9491d9e82a7fe2280a0eab966b9a1a24cf8b3e
[INFO] running `Command { std: "docker" "start" "-a" "797a443b8799da9fcde7144b6c9491d9e82a7fe2280a0eab966b9a1a24cf8b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "797a443b8799da9fcde7144b6c9491d9e82a7fe2280a0eab966b9a1a24cf8b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "797a443b8799da9fcde7144b6c9491d9e82a7fe2280a0eab966b9a1a24cf8b3e", kill_on_drop: false }`
[INFO] [stdout] 797a443b8799da9fcde7144b6c9491d9e82a7fe2280a0eab966b9a1a24cf8b3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+31a9463c6e2794a59ce57a8f37abc6966afc2a58" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57d7ccf69d412773854e400a2f8a7e04a4cfd8092d806f29f5db979a49e115d1
[INFO] running `Command { std: "docker" "start" "-a" "57d7ccf69d412773854e400a2f8a7e04a4cfd8092d806f29f5db979a49e115d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.2.27
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]     Checking tracing-core v0.1.34
[INFO] [stderr]    Compiling openssl v0.10.73
[INFO] [stderr]     Checking encoding_rs v0.8.35
[INFO] [stderr]     Checking eyre v0.6.12
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]    Compiling openssl-sys v0.9.109
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.0
[INFO] [stderr]    Compiling zerovec-derive v0.11.1
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking tokio v1.45.1
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.8.0
[INFO] [stderr]     Checking zerovec v0.11.2
[INFO] [stderr]     Checking zerotrie v0.2.2
[INFO] [stderr]     Checking tinystr v0.8.1
[INFO] [stderr]     Checking potential_utf v0.1.2
[INFO] [stderr]     Checking icu_collections v2.0.0
[INFO] [stderr]     Checking icu_locale_core v2.0.0
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking icu_provider v2.0.0
[INFO] [stderr]     Checking icu_properties v2.0.1
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[INFO] [stderr]     Checking url v2.5.4
[INFO] [stderr]     Checking h2 v0.4.11
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking hyper v1.6.0
[INFO] [stderr]     Checking hyper-util v0.1.14
[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking reqwest v0.12.22
[INFO] [stderr]     Checking claude-metaprompting v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `confidence` is never read
[INFO] [stdout]  --> src/analyzer.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct PromptAnalysis {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 7 |     pub confidence: f32,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `PromptAnalysis` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `usage` and `system` are never read
[INFO] [stdout]   --> src/client.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct GeneratePromptResponse {
[INFO] [stdout]    |            ---------------------- fields in this struct
[INFO] [stdout] 15 |     pub messages: Vec<Message>,
[INFO] [stdout] 16 |     pub usage: Usage,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 17 |     pub system: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GeneratePromptResponse` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `role` is never read
[INFO] [stdout]   --> src/client.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Message {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 22 |     pub role: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `content_type` is never read
[INFO] [stdout]   --> src/client.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct ContentBlock {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 28 |     #[serde(rename = "type")]
[INFO] [stdout] 29 |     pub content_type: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ContentBlock` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `input_tokens` and `output_tokens` are never read
[INFO] [stdout]   --> src/client.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Usage {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 35 |     pub input_tokens: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 36 |     pub output_tokens: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Usage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `used_api` is never read
[INFO] [stdout]   --> src/improver.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct ImprovementResult {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub used_api: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ImprovementResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `confidence` is never read
[INFO] [stdout]  --> src/analyzer.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct PromptAnalysis {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 7 |     pub confidence: f32,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `PromptAnalysis` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `usage` and `system` are never read
[INFO] [stdout]   --> src/client.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct GeneratePromptResponse {
[INFO] [stdout]    |            ---------------------- fields in this struct
[INFO] [stdout] 15 |     pub messages: Vec<Message>,
[INFO] [stdout] 16 |     pub usage: Usage,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 17 |     pub system: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GeneratePromptResponse` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `role` is never read
[INFO] [stdout]   --> src/client.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Message {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 22 |     pub role: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `content_type` is never read
[INFO] [stdout]   --> src/client.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct ContentBlock {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 28 |     #[serde(rename = "type")]
[INFO] [stdout] 29 |     pub content_type: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ContentBlock` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `input_tokens` and `output_tokens` are never read
[INFO] [stdout]   --> src/client.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Usage {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 35 |     pub input_tokens: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 36 |     pub output_tokens: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Usage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `used_api` is never read
[INFO] [stdout]   --> src/improver.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct ImprovementResult {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub used_api: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ImprovementResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 38.29s
[INFO] running `Command { std: "docker" "inspect" "57d7ccf69d412773854e400a2f8a7e04a4cfd8092d806f29f5db979a49e115d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57d7ccf69d412773854e400a2f8a7e04a4cfd8092d806f29f5db979a49e115d1", kill_on_drop: false }`
[INFO] [stdout] 57d7ccf69d412773854e400a2f8a7e04a4cfd8092d806f29f5db979a49e115d1
