[INFO] fetching crate syn 1.0.73...
[INFO] checking syn-1.0.73 against master#0a8629bff642c3c3b84bb644c0099194f063b627 for pr-86231
[INFO] extracting crate syn 1.0.73 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate syn 1.0.73 on toolchain 0a8629bff642c3c3b84bb644c0099194f063b627
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syn 1.0.73
[INFO] finished tweaking crates.io crate syn 1.0.73
[INFO] tweaked toml for crates.io crate syn 1.0.73 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 768d4d2b69f8838915e47d400c3420f0c273ce46920d3d0f753c128e7e96906f
[INFO] running `Command { std: "docker" "start" "-a" "768d4d2b69f8838915e47d400c3420f0c273ce46920d3d0f753c128e7e96906f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "768d4d2b69f8838915e47d400c3420f0c273ce46920d3d0f753c128e7e96906f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "768d4d2b69f8838915e47d400c3420f0c273ce46920d3d0f753c128e7e96906f", kill_on_drop: false }`
[INFO] [stdout] 768d4d2b69f8838915e47d400c3420f0c273ce46920d3d0f753c128e7e96906f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+0a8629bff642c3c3b84bb644c0099194f063b627" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e806cfe0330a6c07ee4f2dd8912c4f624e0989e8c0d1e91cad055be3f6d200c2
[INFO] running `Command { std: "docker" "start" "-a" "e806cfe0330a6c07ee4f2dd8912c4f624e0989e8c0d1e91cad055be3f6d200c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]    Compiling anyhow v1.0.41
[INFO] [stderr]    Compiling ref-cast v1.0.6
[INFO] [stderr]    Compiling syn v1.0.73 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]     Checking similar v1.3.0
[INFO] [stderr]     Checking syn-test-suite v0.0.0+test
[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" "e806cfe0330a6c07ee4f2dd8912c4f624e0989e8c0d1e91cad055be3f6d200c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e806cfe0330a6c07ee4f2dd8912c4f624e0989e8c0d1e91cad055be3f6d200c2", kill_on_drop: false }`
[INFO] [stdout] e806cfe0330a6c07ee4f2dd8912c4f624e0989e8c0d1e91cad055be3f6d200c2