[INFO] fetching crate syn 1.0.74...
[INFO] testing syn-1.0.74 against 1.54.0 for beta-1.55-1
[INFO] extracting crate syn 1.0.74 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate syn 1.0.74 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syn 1.0.74
[INFO] finished tweaking crates.io crate syn 1.0.74
[INFO] tweaked toml for crates.io crate syn 1.0.74 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn-test-suite v0.0.0+test
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f76aa761cab613618d6baa5ed10dd529105f271242b74e9c0baa718d7eaf5aad
[INFO] running `Command { std: "docker" "start" "-a" "f76aa761cab613618d6baa5ed10dd529105f271242b74e9c0baa718d7eaf5aad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f76aa761cab613618d6baa5ed10dd529105f271242b74e9c0baa718d7eaf5aad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f76aa761cab613618d6baa5ed10dd529105f271242b74e9c0baa718d7eaf5aad", kill_on_drop: false }`
[INFO] [stdout] f76aa761cab613618d6baa5ed10dd529105f271242b74e9c0baa718d7eaf5aad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 226838b88d8bb16e3892d9d3777d53864666da326b6f1d0e4f6fdc9e6da46d97
[INFO] running `Command { std: "docker" "start" "-a" "226838b88d8bb16e3892d9d3777d53864666da326b6f1d0e4f6fdc9e6da46d97", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.93s
[INFO] running `Command { std: "docker" "inspect" "226838b88d8bb16e3892d9d3777d53864666da326b6f1d0e4f6fdc9e6da46d97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "226838b88d8bb16e3892d9d3777d53864666da326b6f1d0e4f6fdc9e6da46d97", kill_on_drop: false }`
[INFO] [stdout] 226838b88d8bb16e3892d9d3777d53864666da326b6f1d0e4f6fdc9e6da46d97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81cfe73df98cfb2a14d369145d1b99a55e4dc7a61fac88276422319c2ceacc53
[INFO] running `Command { std: "docker" "start" "-a" "81cfe73df98cfb2a14d369145d1b99a55e4dc7a61fac88276422319c2ceacc53", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling similar v1.3.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling syn-test-suite v0.0.0+test
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling ref-cast v1.0.6
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling anyhow v1.0.42
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stdout] error: expected item, found `@`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/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] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syn-test-suite`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "81cfe73df98cfb2a14d369145d1b99a55e4dc7a61fac88276422319c2ceacc53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81cfe73df98cfb2a14d369145d1b99a55e4dc7a61fac88276422319c2ceacc53", kill_on_drop: false }`
[INFO] [stdout] 81cfe73df98cfb2a14d369145d1b99a55e4dc7a61fac88276422319c2ceacc53
