[INFO] cloning repository https://github.com/mr-nozko/rag-mcp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mr-nozko/rag-mcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmr-nozko%2Frag-mcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmr-nozko%2Frag-mcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8af627de81fe2d453afa5630df88e8d4265afe13
[INFO] testing mr-nozko/rag-mcp against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmr-nozko%2Frag-mcp" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mr-nozko/rag-mcp
[INFO] finished tweaking git repo https://github.com/mr-nozko/rag-mcp
[INFO] tweaked toml for git repo https://github.com/mr-nozko/rag-mcp written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mr-nozko/rag-mcp on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mr-nozko/rag-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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ce7a2a9f80af34f91b51161c86e0d12c199a637e870bbaacd62b3018108e90e
[INFO] running `Command { std: "docker" "start" "-a" "4ce7a2a9f80af34f91b51161c86e0d12c199a637e870bbaacd62b3018108e90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ce7a2a9f80af34f91b51161c86e0d12c199a637e870bbaacd62b3018108e90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ce7a2a9f80af34f91b51161c86e0d12c199a637e870bbaacd62b3018108e90e", kill_on_drop: false }`
[INFO] [stdout] 4ce7a2a9f80af34f91b51161c86e0d12c199a637e870bbaacd62b3018108e90e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94860a54e48045c914488c8ca676455af53760da910a4de5429a8146ab994941
[INFO] running `Command { std: "docker" "start" "-a" "94860a54e48045c914488c8ca676455af53760da910a4de5429a8146ab994941", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.182
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling itoa v1.0.17
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling bytes v1.11.1
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling tower-service v0.3.3
[INFO] [stderr]    Compiling syn v2.0.116
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling slab v0.4.12
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling futures-task v0.3.32
[INFO] [stderr]    Compiling litemap v0.8.1
[INFO] [stderr]    Compiling writeable v0.6.2
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling zeroize v1.8.2
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling icu_properties_data v2.1.2
[INFO] [stderr]    Compiling tower-layer v0.3.3
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]    Compiling icu_normalizer_data v2.1.1
[INFO] [stderr]    Compiling percent-encoding v2.3.2
[INFO] [stderr]    Compiling zerocopy v0.8.39
[INFO] [stderr]    Compiling try-lock v0.2.5
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling untrusted v0.9.0
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling want v0.3.1
[INFO] [stderr]    Compiling rustls-pki-types v1.14.0
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling bitflags v2.11.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling rustls v0.23.36
[INFO] [stderr]    Compiling httpdate v1.0.3
[INFO] [stderr]    Compiling atomic-waker v1.1.2
[INFO] [stderr]    Compiling utf8parse v0.2.2
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling http v1.4.0
[INFO] [stderr]    Compiling anstyle-parse v0.2.7
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling ryu v1.0.23
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling foldhash v0.2.0
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.2
[INFO] [stderr]    Compiling colorchoice v1.0.4
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling regex-syntax v0.8.9
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling allocator-api2 v0.2.21
[INFO] [stderr]    Compiling ipnet v2.11.0
[INFO] [stderr]    Compiling anstyle-query v1.1.5
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling anstyle v1.0.13
[INFO] [stderr]    Compiling rustversion v1.0.22
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling hashbrown v0.16.1
[INFO] [stderr]    Compiling utf8_iter v1.0.4
[INFO] [stderr]    Compiling anstream v0.6.21
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling mio v1.1.1
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling socket2 v0.6.2
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling libsqlite3-sys v0.30.1
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling webpki-roots v1.0.6
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling iri-string v0.7.10
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling clap_lex v1.0.0
[INFO] [stderr]    Compiling winnow v0.7.14
[INFO] [stderr]    Compiling mime v0.3.17
[INFO] [stderr]    Compiling unicode-width v0.2.2
[INFO] [stderr]    Compiling anyhow v1.0.101
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling pulldown-cmark v0.13.0
[INFO] [stderr]    Compiling getopts v0.2.24
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling clap_builder v4.5.59
[INFO] [stderr]    Compiling inotify v0.9.6
[INFO] [stderr]    Compiling indexmap v2.13.0
[INFO] [stderr]    Compiling serde_path_to_error v0.1.20
[INFO] [stderr]    Compiling toml_datetime v0.7.5+spec-1.1.0
[INFO] [stderr]    Compiling serde_spanned v1.0.4
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling filetime v0.2.27
[INFO] [stderr]    Compiling getrandom v0.4.1
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling cpufeatures v0.2.17
[INFO] [stderr]    Compiling iana-time-zone v0.1.65
[INFO] [stderr]    Compiling jiff v0.2.20
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.11
[INFO] [stderr]    Compiling matchit v0.7.3
[INFO] [stderr]    Compiling fallible-streaming-iterator v0.1.9
[INFO] [stderr]    Compiling unicase v2.9.0
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling pulldown-cmark-escape v0.11.0
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2026-04-21-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.116/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=6414e5f8135939c1 -C extra-filename=-5a38c5bff0f9966c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-0fa97b1aa44f5fda.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-c8d1aa803b4380bc.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-423507c85e36a25a.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "94860a54e48045c914488c8ca676455af53760da910a4de5429a8146ab994941", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94860a54e48045c914488c8ca676455af53760da910a4de5429a8146ab994941", kill_on_drop: false }`
[INFO] [stdout] 94860a54e48045c914488c8ca676455af53760da910a4de5429a8146ab994941
