[INFO] fetching crate syn 2.0.106...
[INFO] testing syn-2.0.106 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate syn 2.0.106 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate syn 2.0.106
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate syn 2.0.106
[INFO] tweaked toml for crates.io crate syn 2.0.106 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate syn 2.0.106 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate syn 2.0.106 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6c801a431cd0f5a120bc98183cadcbb49a7777299574f47e8af8e12f2d2205b
[INFO] running `Command { std: "docker" "start" "-a" "d6c801a431cd0f5a120bc98183cadcbb49a7777299574f47e8af8e12f2d2205b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6c801a431cd0f5a120bc98183cadcbb49a7777299574f47e8af8e12f2d2205b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6c801a431cd0f5a120bc98183cadcbb49a7777299574f47e8af8e12f2d2205b", kill_on_drop: false }`
[INFO] [stdout] d6c801a431cd0f5a120bc98183cadcbb49a7777299574f47e8af8e12f2d2205b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e1bd4f60a8339a03adb62baac1e0d56166aecd6c0275524cc889decf0fbdb58
[INFO] running `Command { std: "docker" "start" "-a" "4e1bd4f60a8339a03adb62baac1e0d56166aecd6c0275524cc889decf0fbdb58", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.97
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.106 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.03s
[INFO] running `Command { std: "docker" "inspect" "4e1bd4f60a8339a03adb62baac1e0d56166aecd6c0275524cc889decf0fbdb58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e1bd4f60a8339a03adb62baac1e0d56166aecd6c0275524cc889decf0fbdb58", kill_on_drop: false }`
[INFO] [stdout] 4e1bd4f60a8339a03adb62baac1e0d56166aecd6c0275524cc889decf0fbdb58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08f3237766142f7c0d1ee6ee3c8000ea8dd4c0f68738804eee7dfcc753e48d5f
[INFO] running `Command { std: "docker" "start" "-a" "08f3237766142f7c0d1ee6ee3c8000ea8dd4c0f68738804eee7dfcc753e48d5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.97
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling cc v1.2.32
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling linux-raw-sys v0.9.4
[INFO] [stderr]    Compiling ref-cast v1.0.24
[INFO] [stderr]    Compiling anyhow v1.0.99
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling filetime v0.2.25
[INFO] [stderr]    Compiling console v0.15.11
[INFO] [stderr]    Compiling similar v2.7.0
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling syn-test-suite v0.0.0+test
[INFO] [stdout] error: expected item, found `@`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-test-suite-0.0.0+test/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | @
[INFO] [stdout]   | ^ expected item
[INFO] [stdout]   |
[INFO] [stdout]   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syn-test-suite` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "08f3237766142f7c0d1ee6ee3c8000ea8dd4c0f68738804eee7dfcc753e48d5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08f3237766142f7c0d1ee6ee3c8000ea8dd4c0f68738804eee7dfcc753e48d5f", kill_on_drop: false }`
[INFO] [stdout] 08f3237766142f7c0d1ee6ee3c8000ea8dd4c0f68738804eee7dfcc753e48d5f
