[INFO] cloning repository https://github.com/cuttie1979/research_mcp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cuttie1979/research_mcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcuttie1979%2Fresearch_mcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcuttie1979%2Fresearch_mcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c672795494bf6e8f4b93430b585f933edd2a6862
[INFO] checking cuttie1979/research_mcp against 40527f3e444fde1deb361751bdef9b9e11d1b971+rustflags=--cfg crater_hack --force-warn invalid-c-variadic-arguments for pr-162478
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcuttie1979%2Fresearch_mcp" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cuttie1979/research_mcp
[INFO] finished tweaking git repo https://github.com/cuttie1979/research_mcp
[INFO] tweaked toml for git repo https://github.com/cuttie1979/research_mcp written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cuttie1979/research_mcp on toolchain 40527f3e444fde1deb361751bdef9b9e11d1b971
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cuttie1979/research_mcp 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" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:49:1
[INFO] [stderr]    |
[INFO] [stderr] 49 | readme = "README.md"
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: binary `research_mcp` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../research_mcp
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `research-mcp`, convert `package.name`
[INFO] [stderr]   --> Cargo.toml:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 - name = "research_mcp"
[INFO] [stderr] 48 + name = "research-mcp"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `research-mcp`, specify `bin.name`
[INFO] [stderr]   --> Cargo.toml:51:19
[INFO] [stderr]    |
[INFO] [stderr] 51 ~ version = "0.8.6"
[INFO] [stderr] 52 + [[bin]]
[INFO] [stderr] 53 + name = "research-mcp"
[INFO] [stderr] 54 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `research_mcp` (manifest) generated 2 warnings
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 7cbcdb2465df7b6b2a4b53a7e96f99d3fc381039ba1d8f877fc94a8de4c4524e
[INFO] running `Command { std: "docker" "start" "7cbcdb2465df7b6b2a4b53a7e96f99d3fc381039ba1d8f877fc94a8de4c4524e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7cbcdb2465df7b6b2a4b53a7e96f99d3fc381039ba1d8f877fc94a8de4c4524e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7cbcdb2465df7b6b2a4b53a7e96f99d3fc381039ba1d8f877fc94a8de4c4524e" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7cbcdb2465df7b6b2a4b53a7e96f99d3fc381039ba1d8f877fc94a8de4c4524e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid --cfg crater_hack --force-warn invalid-c-variadic-arguments" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7cbcdb2465df7b6b2a4b53a7e96f99d3fc381039ba1d8f877fc94a8de4c4524e" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:49:1
[INFO] [stderr]    |
[INFO] [stderr] 49 | readme = "README.md"
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: binary `research_mcp` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../research_mcp
[INFO] [stderr]    |                          ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `research-mcp`, convert `package.name`
[INFO] [stderr]   --> Cargo.toml:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 - name = "research_mcp"
[INFO] [stderr] 48 + name = "research-mcp"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `research-mcp`, specify `bin.name`
[INFO] [stderr]   --> Cargo.toml:51:19
[INFO] [stderr]    |
[INFO] [stderr] 51 ~ version = "0.8.6"
[INFO] [stderr] 52 + [[bin]]
[INFO] [stderr] 53 + name = "research-mcp"
[INFO] [stderr] 54 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `research_mcp` (manifest) generated 2 warnings
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
[INFO] [stderr]    Compiling find-msvc-tools v0.1.10
[INFO] [stderr]     Checking futures-core v0.3.34
[INFO] [stderr]     Checking futures-sink v0.3.34
[INFO] [stderr]     Checking smallvec v1.15.2
[INFO] [stderr]     Checking litemap v0.8.2
[INFO] [stderr]     Checking writeable v0.6.3
[INFO] [stderr]    Compiling icu_properties_data v2.2.0
[INFO] [stderr]    Compiling icu_normalizer_data v2.2.0
[INFO] [stderr]     Checking futures-io v0.3.34
[INFO] [stderr]     Checking mio v1.2.2
[INFO] [stderr]     Checking socket2 v0.6.5
[INFO] [stderr]     Checking http v1.5.0
[INFO] [stderr]     Checking zeroize v1.9.0
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking simd-adler32 v0.3.10
[INFO] [stderr]    Compiling serde_json v1.0.151
[INFO] [stderr]    Compiling zerocopy v0.8.56
[INFO] [stderr]     Checking futures-channel v0.3.34
[INFO] [stderr]    Compiling rustls v0.23.43
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]     Checking rustls-pki-types v1.15.1
[INFO] [stderr]    Compiling time-macros v0.2.32
[INFO] [stderr]    Compiling cookie v0.18.2
[INFO] [stderr]     Checking subtle v2.6.1
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]     Checking num-conv v0.2.2
[INFO] [stderr]    Compiling pkg-config v0.3.33
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]     Checking time-core v0.1.9
[INFO] [stderr]    Compiling ref-cast v1.0.26
[INFO] [stderr]     Checking deranged v0.5.8
[INFO] [stderr]     Checking compression-core v0.4.32
[INFO] [stderr]    Compiling cc v1.4.2
[INFO] [stderr]     Checking sync_wrapper v1.0.2
[INFO] [stderr]     Checking psl-types v2.0.11
[INFO] [stderr]     Checking ipnet v2.12.1
[INFO] [stderr]     Checking bitflags v2.13.1
[INFO] [stderr]    Compiling memchr v2.8.3
[INFO] [stderr]    Compiling litrs v1.0.0
[INFO] [stderr]     Checking webpki-roots v1.0.9
[INFO] [stderr]     Checking aho-corasick v1.1.5
[INFO] [stderr]     Checking regex-syntax v0.8.11
[INFO] [stderr]    Compiling rmcp v3.1.2
[INFO] [stderr]     Checking log v0.4.33
[INFO] [stderr]     Checking clap_builder v4.6.6
[INFO] [stderr]     Checking flate2 v1.1.9
[INFO] [stderr]     Checking uuid v1.24.0
[INFO] [stderr]     Checking base64 v0.23.1
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]     Checking http-body v1.1.0
[INFO] [stderr]    Compiling pastey v0.2.3
[INFO] [stderr]    Compiling syn v3.0.3
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]     Checking http-body-util v0.1.4
[INFO] [stderr]     Checking compression-codecs v0.4.38
[INFO] [stderr]    Compiling document-features v0.2.12
[INFO] [stderr]     Checking anyhow v1.0.104
[INFO] [stderr]     Checking quick-xml v0.37.5
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling libsqlite3-sys v0.30.1
[INFO] [stderr]     Checking time v0.3.55
[INFO] [stderr]     Checking regex-automata v0.4.18
[INFO] [stderr]    Compiling darling_core v0.24.0
[INFO] [stderr]    Compiling serde_derive_internals v0.30.0
[INFO] [stderr]    Compiling displaydoc v0.2.7
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]    Compiling tokio-macros v2.7.2
[INFO] [stderr]    Compiling futures-macro v0.3.34
[INFO] [stderr]    Compiling ref-cast-impl v1.0.26
[INFO] [stderr]    Compiling thiserror-impl v2.0.20
[INFO] [stderr]    Compiling clap_derive v4.6.4
[INFO] [stderr]     Checking regex v1.13.1
[INFO] [stderr]     Checking ahash v0.8.12
[INFO] [stderr]    Compiling schemars_derive v1.2.2
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]     Checking tokio v1.53.1
[INFO] [stderr]     Checking rustls-webpki v0.103.14
[INFO] [stderr]     Checking futures-util v0.3.34
[INFO] [stderr]     Checking thiserror v2.0.20
[INFO] [stderr]    Compiling zerovec-derive v0.11.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]     Checking hashlink v0.9.1
[INFO] [stderr]    Compiling zerofrom-derive v0.1.7
[INFO] [stderr]    Compiling yoke-derive v0.8.2
[INFO] [stderr]     Checking clap v4.6.6
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking zerofrom v0.1.8
[INFO] [stderr]     Checking yoke v0.8.3
[INFO] [stderr]     Checking zerovec v0.11.6
[INFO] [stderr]     Checking zerotrie v0.2.4
[INFO] [stderr]     Checking serde v1.0.229
[INFO] [stderr]    Compiling darling_macro v0.24.0
[INFO] [stderr]     Checking toml_datetime v0.6.11
[INFO] [stderr]     Checking chrono v0.4.45
[INFO] [stderr]     Checking serde_spanned v0.6.9
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling darling v0.24.0
[INFO] [stderr]     Checking toml_edit v0.22.27
[INFO] [stderr]    Compiling rmcp-macros v3.1.2
[INFO] [stderr]     Checking tinystr v0.8.3
[INFO] [stderr]     Checking potential_utf v0.1.5
[INFO] [stderr]     Checking icu_locale_core v2.2.0
[INFO] [stderr]     Checking icu_collections v2.2.0
[INFO] [stderr]     Checking futures-executor v0.3.34
[INFO] [stderr]     Checking futures v0.3.34
[INFO] [stderr]     Checking icu_provider v2.2.0
[INFO] [stderr]     Checking icu_properties v2.2.0
[INFO] [stderr]     Checking icu_normalizer v2.2.0
[INFO] [stderr]     Checking schemars v1.2.2
[INFO] [stderr]     Checking toml v0.8.23
[INFO] [stderr]     Checking idna_adapter v1.2.2
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking url v2.5.8
[INFO] [stderr]     Checking publicsuffix v2.3.0
[INFO] [stderr]     Checking cookie_store v0.22.1
[INFO] [stderr]     Checking tokio-util v0.7.19
[INFO] [stderr]     Checking hyper v1.11.0
[INFO] [stderr]     Checking tower v0.5.3
[INFO] [stderr]     Checking tokio-rustls v0.26.4
[INFO] [stderr]     Checking async-compression v0.4.43
[INFO] [stderr]     Checking rusqlite v0.32.1
[INFO] [stderr]     Checking tower-http v0.6.11
[INFO] [stderr]     Checking hyper-util v0.1.20
[INFO] [stderr]     Checking hyper-rustls v0.27.9
[INFO] [stderr]     Checking reqwest v0.12.28
[INFO] [stderr]     Checking research_mcp v0.8.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `attempt`
[INFO] [stdout]    --> src/arxiv.rs:307:13
[INFO] [stdout]     |
[INFO] [stdout] 307 |         for attempt in 0..3 {
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attempt`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attempt`
[INFO] [stdout]    --> src/arxiv.rs:331:13
[INFO] [stdout]     |
[INFO] [stdout] 331 |         for attempt in 0..3 {
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attempt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attempt`
[INFO] [stdout]    --> src/search.rs:503:13
[INFO] [stdout]     |
[INFO] [stdout] 503 |         for attempt in 0..4 {
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attempt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 10s
[INFO] running `Command { std: "docker" "inspect" "7cbcdb2465df7b6b2a4b53a7e96f99d3fc381039ba1d8f877fc94a8de4c4524e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cbcdb2465df7b6b2a4b53a7e96f99d3fc381039ba1d8f877fc94a8de4c4524e", kill_on_drop: false }`
[INFO] [stdout] 7cbcdb2465df7b6b2a4b53a7e96f99d3fc381039ba1d8f877fc94a8de4c4524e
