[INFO] fetching crate syn 1.0.69...
[INFO] checking syn-1.0.69 against master#a836d9b6413d9d593be6c09463ff8c4c70e56599 for pr-84037
[INFO] extracting crate syn 1.0.69 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate syn 1.0.69 on toolchain a836d9b6413d9d593be6c09463ff8c4c70e56599
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syn 1.0.69
[INFO] finished tweaking crates.io crate syn 1.0.69
[INFO] tweaked toml for crates.io crate syn 1.0.69 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44c42b3f7f760c6a88f8a3b56ede0d9b3acd71ccaeab53a0381d1ff5ccc0c7c9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "44c42b3f7f760c6a88f8a3b56ede0d9b3acd71ccaeab53a0381d1ff5ccc0c7c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44c42b3f7f760c6a88f8a3b56ede0d9b3acd71ccaeab53a0381d1ff5ccc0c7c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44c42b3f7f760c6a88f8a3b56ede0d9b3acd71ccaeab53a0381d1ff5ccc0c7c9", kill_on_drop: false }`
[INFO] [stdout] 44c42b3f7f760c6a88f8a3b56ede0d9b3acd71ccaeab53a0381d1ff5ccc0c7c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4cbe271887fab66dd5fd7a1ae70df2cc4bcaa95b2de2c6a80c7f5c245d8e02c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c4cbe271887fab66dd5fd7a1ae70df2cc4bcaa95b2de2c6a80c7f5c245d8e02c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking futures-sink v0.3.14
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling syn v1.0.69 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking similar v1.3.0
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking syn-test-suite v0.0.0+test
[INFO] [stderr]    Compiling indexmap v1.6.2
[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" "c4cbe271887fab66dd5fd7a1ae70df2cc4bcaa95b2de2c6a80c7f5c245d8e02c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4cbe271887fab66dd5fd7a1ae70df2cc4bcaa95b2de2c6a80c7f5c245d8e02c", kill_on_drop: false }`
[INFO] [stdout] c4cbe271887fab66dd5fd7a1ae70df2cc4bcaa95b2de2c6a80c7f5c245d8e02c