[INFO] updating cached repository https://github.com/klemens/hwpb
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0625129aa9c77b16444fee9b64b1e9e07e87f74d
[INFO] checking klemens/hwpb against master#446e5e57b667c841ba3ebb4b41b44fb98bd3af4b for pr-65294
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fklemens%2Fhwpb" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/klemens/hwpb on toolchain 446e5e57b667c841ba3ebb4b41b44fb98bd3af4b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/klemens/hwpb
[INFO] finished tweaking git repo https://github.com/klemens/hwpb
[INFO] tweaked toml for git repo https://github.com/klemens/hwpb written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/klemens/hwpb already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "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] e978da5558e4225b4ca82c23b6a0b5e1fff4fd22aa17a7a26d7fd3e876f81741
[INFO] running `"docker" "start" "-a" "e978da5558e4225b4ca82c23b6a0b5e1fff4fd22aa17a7a26d7fd3e876f81741"`
[INFO] [stderr]    Compiling ryu v1.0.1
[INFO] [stderr]    Compiling indexmap v1.2.0
[INFO] [stderr]    Compiling hwpb v1.0.0-beta.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling which v3.0.0
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.7
[INFO] [stderr]     Checking users v0.8.1
[INFO] [stderr]     Checking pam-sys v0.5.6
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking ipnetwork v0.15.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]     Checking parking_lot_core v0.5.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking pam v0.7.0
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.2
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking parking_lot v0.8.0
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling chrono v0.4.9
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking r2d2 v0.8.5
[INFO] [stderr]    Compiling cexpr v0.3.5
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking notify v4.0.13
[INFO] [stderr]     Checking tokio-udp v0.1.5
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr] error: could not compile `syn`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.5/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --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="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=f6ce666c0b61f5f4 -C extra-filename=-f6ce666c0b61f5f4 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-e28ac73dcd686d70.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b6a370319a4376a8.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-800144b92de40e00.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" "e978da5558e4225b4ca82c23b6a0b5e1fff4fd22aa17a7a26d7fd3e876f81741"`
[INFO] running `"docker" "rm" "-f" "e978da5558e4225b4ca82c23b6a0b5e1fff4fd22aa17a7a26d7fd3e876f81741"`
[INFO] [stdout] e978da5558e4225b4ca82c23b6a0b5e1fff4fd22aa17a7a26d7fd3e876f81741