[INFO] crate unveil-rs 0.1.2-alpha1 is already in cache
[INFO] checking unveil-rs-0.1.2-alpha1 against try#8a5e87609850cdd8679aada01eb0f3062f254ca8 for pr-71140
[INFO] extracting crate unveil-rs 0.1.2-alpha1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate unveil-rs 0.1.2-alpha1 on toolchain 8a5e87609850cdd8679aada01eb0f3062f254ca8
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate unveil-rs 0.1.2-alpha1
[INFO] finished tweaking crates.io crate unveil-rs 0.1.2-alpha1
[INFO] tweaked toml for crates.io crate unveil-rs 0.1.2-alpha1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate unveil-rs 0.1.2-alpha1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "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] 7ac3358f13ba3f01982646e688fe5c3a47b9cab9fac52e67836edcd8bf6677d7
[INFO] running `"docker" "start" "-a" "7ac3358f13ba3f01982646e688fe5c3a47b9cab9fac52e67836edcd8bf6677d7"`
[INFO] [stderr]    Compiling pulldown-cmark v0.7.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling sass-sys v0.4.18
[INFO] [stderr]     Checking ws v0.9.1
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.8
[INFO] [stderr] error: could not compile `syn`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.17/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="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=8ef310c9777ca8cd -C extra-filename=-8ef310c9777ca8cd --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-b581ce336376fe3b.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-5fed1b0cb110c7ed.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-49b1244b653bf9ca.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "7ac3358f13ba3f01982646e688fe5c3a47b9cab9fac52e67836edcd8bf6677d7"`
[INFO] running `"docker" "rm" "-f" "7ac3358f13ba3f01982646e688fe5c3a47b9cab9fac52e67836edcd8bf6677d7"`
[INFO] [stdout] 7ac3358f13ba3f01982646e688fe5c3a47b9cab9fac52e67836edcd8bf6677d7