[INFO] crate ewasm 0.2.2 is already in cache
[INFO] checking ewasm-0.2.2 against try#d27c6c6a469a28343396a8f3ac1c9d403aabda69 for pr-66037
[INFO] extracting crate ewasm 0.2.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate ewasm 0.2.2 on toolchain d27c6c6a469a28343396a8f3ac1c9d403aabda69
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ewasm 0.2.2
[INFO] finished tweaking crates.io crate ewasm 0.2.2
[INFO] tweaked toml for crates.io crate ewasm 0.2.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7bd1e52409576f850beaf55e24f5a01c0d02371036f58e952ba7dc4da63946d1
[INFO] running `"docker" "start" "-a" "7bd1e52409576f850beaf55e24f5a01c0d02371036f58e952ba7dc4da63946d1"`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking parity-wasm v0.40.3
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]    Compiling wabt-sys v0.7.0
[INFO] [stderr]     Checking num-bigint v0.2.5
[INFO] [stderr]     Checking wasmi-validation v0.2.0
[INFO] [stderr]     Checking wasmi v0.5.1
[INFO] [stderr] error: could not compile `syn`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.15.44/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' -C metadata=a85b87b62e738de1 -C extra-filename=-a85b87b62e738de1 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-ad103cdd48445fbb.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b7064649ca4432ee.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-f56a1e8b58a32056.rmeta --cap-lints allow --cap-lints=forbid --cfg syn_can_match_trailing_dollar --cfg syn_can_use_thread_id --cfg syn_can_use_associated_constants --cfg syn_can_call_macro_by_path` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "7bd1e52409576f850beaf55e24f5a01c0d02371036f58e952ba7dc4da63946d1"`
[INFO] running `"docker" "rm" "-f" "7bd1e52409576f850beaf55e24f5a01c0d02371036f58e952ba7dc4da63946d1"`
[INFO] [stdout] 7bd1e52409576f850beaf55e24f5a01c0d02371036f58e952ba7dc4da63946d1