[INFO] fetching crate syn 1.0.72...
[INFO] checking syn-1.0.72 against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] extracting crate syn 1.0.72 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate syn 1.0.72 on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syn 1.0.72
[INFO] finished tweaking crates.io crate syn 1.0.72
[INFO] tweaked toml for crates.io crate syn 1.0.72 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "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" "+fc81ad22c453776de16acf9938976930cf8c9401" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 461cff9fdf647ef32fdbf43c8b67956574cd9902728e50291590037159952b8d
[INFO] running `Command { std: "docker" "start" "-a" "461cff9fdf647ef32fdbf43c8b67956574cd9902728e50291590037159952b8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "461cff9fdf647ef32fdbf43c8b67956574cd9902728e50291590037159952b8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "461cff9fdf647ef32fdbf43c8b67956574cd9902728e50291590037159952b8d", kill_on_drop: false }`
[INFO] [stdout] 461cff9fdf647ef32fdbf43c8b67956574cd9902728e50291590037159952b8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19775bfcc68bed6e5bbeed901d3dc11e275a5a546eefe952e3dff43fa16c6135
[INFO] running `Command { std: "docker" "start" "-a" "19775bfcc68bed6e5bbeed901d3dc11e275a5a546eefe952e3dff43fa16c6135", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]    Compiling syn v1.0.72 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking similar v1.3.0
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking ipnet v2.3.0
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking syn-test-suite v0.0.0+test
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling memoffset v0.6.4
[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] [stderr] error: could not compile `syn-test-suite`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[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" "19775bfcc68bed6e5bbeed901d3dc11e275a5a546eefe952e3dff43fa16c6135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19775bfcc68bed6e5bbeed901d3dc11e275a5a546eefe952e3dff43fa16c6135", kill_on_drop: false }`
[INFO] [stdout] 19775bfcc68bed6e5bbeed901d3dc11e275a5a546eefe952e3dff43fa16c6135