[INFO] cloning repository https://github.com/barais/spring-rust-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/barais/spring-rust-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbarais%2Fspring-rust-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbarais%2Fspring-rust-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 409c48f56a26ef83affe7b90574d66dddbc0932e
[INFO] documenting barais/spring-rust-demo against beta-2026-04-21 for beta-1.96-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbarais%2Fspring-rust-demo" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/barais/spring-rust-demo
[INFO] finished tweaking git repo https://github.com/barais/spring-rust-demo
[INFO] tweaked toml for git repo https://github.com/barais/spring-rust-demo written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/barais/spring-rust-demo 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/barais/spring-rust-demo 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 5446f439e97d983ea0df4aac64fa9a9621c4f846dbeb90f715e33faa9706bb3b
[INFO] running `Command { std: "docker" "start" "-a" "5446f439e97d983ea0df4aac64fa9a9621c4f846dbeb90f715e33faa9706bb3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5446f439e97d983ea0df4aac64fa9a9621c4f846dbeb90f715e33faa9706bb3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5446f439e97d983ea0df4aac64fa9a9621c4f846dbeb90f715e33faa9706bb3b", kill_on_drop: false }`
[INFO] [stdout] 5446f439e97d983ea0df4aac64fa9a9621c4f846dbeb90f715e33faa9706bb3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6db2a6b5ebd08b73262ba8b784031bf732b87d6f4bdd44f716848c5f6c6b29db
[INFO] running `Command { std: "docker" "start" "-a" "6db2a6b5ebd08b73262ba8b784031bf732b87d6f4bdd44f716848c5f6c6b29db", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling find-msvc-tools v0.1.4
[INFO] [stderr]    Compiling generic-array v0.14.8
[INFO] [stderr]     Checking hashbrown v0.16.0
[INFO] [stderr]     Checking log v0.4.28
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]     Checking stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]    Compiling rustls v0.23.32
[INFO] [stderr]     Checking bitflags v2.9.4
[INFO] [stderr]    Compiling zeroize v1.8.2
[INFO] [stderr]     Checking regex-syntax v0.8.7
[INFO] [stderr]    Compiling time-core v0.1.6
[INFO] [stderr]     Checking deranged v0.5.4
[INFO] [stderr]    Compiling rustls-pki-types v1.12.0
[INFO] [stderr]    Compiling time-macros v0.2.24
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]     Checking hdrhistogram v7.5.4
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]     Checking chrono v0.4.42
[INFO] [stderr]    Compiling webpki-roots v1.0.3
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking inout v0.1.4
[INFO] [stderr]    Compiling ref-cast v1.0.25
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]     Checking indexmap v2.11.4
[INFO] [stderr]    Compiling hashlink v0.10.0
[INFO] [stderr]     Checking regex-automata v0.4.12
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking socket2 v0.6.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.6
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking universal-hash v0.5.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking ahash v0.8.12
[INFO] [stderr]    Compiling unicode-normalization v0.1.24
[INFO] [stderr]     Checking time v0.3.44
[INFO] [stderr]    Compiling webpki-roots v0.26.11
[INFO] [stderr]     Checking serde_path_to_error v0.1.20
[INFO] [stderr]    Compiling unicode-properties v0.1.3
[INFO] [stderr]    Compiling zstd-safe v7.2.4
[INFO] [stderr]     Checking matchit v0.8.4
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]     Checking alloc-no-stdlib v2.0.4
[INFO] [stderr]    Compiling cc v1.2.41
[INFO] [stderr]     Checking tinyvec v1.10.0
[INFO] [stderr]     Checking alloc-stdlib v0.2.2
[INFO] [stderr]    Compiling stringprep v0.1.5
[INFO] [stderr]     Checking polyval v0.6.2
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking getrandom v0.3.3
[INFO] [stderr]    Compiling hkdf v0.12.4
[INFO] [stderr]    Compiling md-5 v0.10.6
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking thread_local v1.1.9
[INFO] [stderr]    Compiling home v0.5.11
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]     Checking winnow v0.7.13
[INFO] [stderr]    Compiling dotenvy v0.15.7
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling whoami v1.6.1
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling openssl v0.10.73
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]     Checking dyn-clone v1.0.20
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]     Checking ghash v0.5.1
[INFO] [stderr]     Checking crc v3.3.0
[INFO] [stderr]     Checking brotli-decompressor v5.0.0
[INFO] [stderr]     Checking ctr v0.9.2
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking matchers v0.2.0
[INFO] [stderr]     Checking aead v0.5.2
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]     Checking serde_spanned v1.0.3
[INFO] [stderr]     Checking toml_datetime v0.7.3
[INFO] [stderr]    Compiling cookie v0.18.1
[INFO] [stderr]     Checking toml_writer v1.0.4
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]     Checking flate2 v1.1.4
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling zstd-sys v2.0.16+zstd.1.5.7
[INFO] [stderr]    Compiling openssl-sys v0.9.109
[INFO] [stderr]    Compiling psm v0.1.27
[INFO] [stderr]    Compiling stacker v0.1.22
[INFO] [stderr]     Checking aes-gcm v0.10.3
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]    Compiling proc-macro-error-attr2 v2.0.0
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]     Checking crossbeam-channel v0.5.15
[INFO] [stderr]     Checking atoi v2.0.0
[INFO] [stderr]     Checking compression-core v0.4.29
[INFO] [stderr]     Checking toml_parser v1.0.4
[INFO] [stderr]    Compiling rust_decimal v1.39.0
[INFO] [stderr]     Checking headers v0.4.1
[INFO] [stderr]     Checking serde_html_form v0.2.8
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking inventory v0.3.21
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking brotli v8.0.2
[INFO] [stderr]     Checking chumsky v0.9.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking toml v0.9.8
[INFO] [stderr]     Checking regex v1.12.1
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking hostname v0.4.1
[INFO] [stderr]     Checking email-encoding v0.4.1
[INFO] [stderr]     Checking nom v8.0.0
[INFO] [stderr]     Checking utf8-width v0.1.7
[INFO] [stderr]     Checking iri-string v0.7.8
[INFO] [stderr]     Checking http-range-header v0.4.2
[INFO] [stderr]     Checking quoted_printable v0.5.1
[INFO] [stderr]     Checking email_address v0.2.9
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking pem v3.0.6
[INFO] [stderr]     Checking client-ip v0.1.1
[INFO] [stderr]     Checking colored v3.0.0
[INFO] [stderr]     Checking serde-toml-merge v0.3.11
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling serde_derive_internals v0.29.1
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling darling_core v0.21.3
[INFO] [stderr]    Compiling proc-macro-error2 v2.0.1
[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-2.0.106/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=3d05dbeecdabbf63 -C extra-filename=-a7b87e8d19a021b9 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-ec2e4e906c3fa39e.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-afc954aaaa125544.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-994e2229f72e62d3.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" "6db2a6b5ebd08b73262ba8b784031bf732b87d6f4bdd44f716848c5f6c6b29db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6db2a6b5ebd08b73262ba8b784031bf732b87d6f4bdd44f716848c5f6c6b29db", kill_on_drop: false }`
[INFO] [stdout] 6db2a6b5ebd08b73262ba8b784031bf732b87d6f4bdd44f716848c5f6c6b29db