[INFO] cloning repository https://github.com/REX-codebase/rex-mcp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/REX-codebase/rex-mcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FREX-codebase%2Frex-mcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FREX-codebase%2Frex-mcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9a5ecfc915410f01ebf61570d6ee4cc382882aa5
[INFO] checking REX-codebase/rex-mcp against 7211ea594cbf137ef6118b1752b959dea7cb9088 for pr-164148-crater-rollup
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FREX-codebase%2Frex-mcp" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/REX-codebase/rex-mcp
[INFO] finished tweaking git repo https://github.com/REX-codebase/rex-mcp
[INFO] tweaked toml for git repo https://github.com/REX-codebase/rex-mcp written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/REX-codebase/rex-mcp on toolchain 7211ea594cbf137ef6118b1752b959dea7cb9088
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7211ea594cbf137ef6118b1752b959dea7cb9088" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/REX-codebase/rex-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" "+7211ea594cbf137ef6118b1752b959dea7cb9088" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 490ea951fe25d05b850f2362d8189aa2a3c54423d0cb873bdc499dd21e917a42
[INFO] running `Command { std: "docker" "start" "490ea951fe25d05b850f2362d8189aa2a3c54423d0cb873bdc499dd21e917a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "490ea951fe25d05b850f2362d8189aa2a3c54423d0cb873bdc499dd21e917a42", 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" "490ea951fe25d05b850f2362d8189aa2a3c54423d0cb873bdc499dd21e917a42" "/opt/rustwide/cargo-home/bin/cargo" "+7211ea594cbf137ef6118b1752b959dea7cb9088" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "490ea951fe25d05b850f2362d8189aa2a3c54423d0cb873bdc499dd21e917a42", 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" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "490ea951fe25d05b850f2362d8189aa2a3c54423d0cb873bdc499dd21e917a42" "/opt/rustwide/cargo-home/bin/cargo" "+7211ea594cbf137ef6118b1752b959dea7cb9088" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
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[INFO] [stderr]    Compiling rustversion v1.0.23
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[INFO] [stderr]    Compiling find-msvc-tools v0.1.13
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[INFO] [stderr]    Compiling serde_json v1.0.151
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[INFO] [stderr]    Compiling phf_shared v0.14.0
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[INFO] [stderr]     Checking char_str v0.0.4
[INFO] [stderr]     Checking icu_provider v2.3.1
[INFO] [stderr]     Checking ruff_source_file v0.0.14
[INFO] [stderr]     Checking tungstenite v0.27.0
[INFO] [stderr]     Checking ruff_python_trivia v0.0.14
[INFO] [stderr]     Checking icu_locale_fallback v2.3.0
[INFO] [stderr]     Checking icu_normalizer v2.3.0
[INFO] [stderr]     Checking icu_properties v2.3.0
[INFO] [stderr]     Checking ureq v3.4.2
[INFO] [stderr]     Checking ruff_python_ast v0.0.14
[INFO] [stderr]     Checking icu_segmenter v2.3.0
[INFO] [stderr]     Checking textwrap v0.16.4
[INFO] [stderr]     Checking oxc_diagnostics v0.151.0
[INFO] [stderr]     Checking idna_adapter v1.2.2
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking oxc_regular_expression v0.151.0
[INFO] [stderr]     Checking url v2.5.8
[INFO] [stderr]     Checking rex-search v0.1.0 (/opt/rustwide/workdir/crates/rex-search)
[INFO] [stderr]     Checking rex-preview v0.1.0 (/opt/rustwide/workdir/crates/rex-preview)
[INFO] [stderr]     Checking oxc_ast v0.151.0
[INFO] [stderr]     Checking ruff_python_parser v0.0.14
[INFO] [stderr]     Checking oxc_ecmascript v0.151.0
[INFO] [stderr]     Checking oxc_parser v0.151.0
[INFO] [stderr]     Checking rex-tools v0.1.0 (/opt/rustwide/workdir/crates/rex-tools)
[INFO] [stderr]     Checking rex-custody v0.1.0 (/opt/rustwide/workdir/crates/rex-custody)
[INFO] [stderr]     Checking rex-providers v0.1.0 (/opt/rustwide/workdir/crates/rex-providers)
[INFO] [stderr]     Checking rex-ultra v0.1.0 (/opt/rustwide/workdir/crates/rex-ultra)
[INFO] [stderr]     Checking rex-daemon v0.1.0 (/opt/rustwide/workdir/crates/rex-daemon)
[INFO] [stderr]     Checking rex-mcp v0.1.0 (/opt/rustwide/workdir/crates/rex-mcp)
[INFO] [stderr] warning: unused dependency `serde`
[INFO] [stderr]  --> crates/rex-mcp-ext/Cargo.toml:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | serde = { workspace = true }
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `serde`
[INFO] [stderr] warning: `rex-mcp-ext` (manifest) generated 1 warning
[INFO] [stderr] warning: unused dependency `serde_json`
[INFO] [stderr]   --> crates/rex-prompt/Cargo.toml:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | serde_json = { workspace = true }
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `serde_json`
[INFO] [stderr] warning: `rex-prompt` (manifest) generated 1 warning
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 15s
[INFO] running `Command { std: "docker" "inspect" "490ea951fe25d05b850f2362d8189aa2a3c54423d0cb873bdc499dd21e917a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "490ea951fe25d05b850f2362d8189aa2a3c54423d0cb873bdc499dd21e917a42", kill_on_drop: false }`
[INFO] [stdout] 490ea951fe25d05b850f2362d8189aa2a3c54423d0cb873bdc499dd21e917a42