[INFO] updating cached repository https://github.com/hoardexchange/cacherz
[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] 6903db9135450ac445d0183e5fab2b2b5e4b038d
[INFO] checking hoardexchange/cacherz against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoardexchange%2Fcacherz" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hoardexchange/cacherz on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/hoardexchange/cacherz
[INFO] finished tweaking git repo https://github.com/hoardexchange/cacherz
[INFO] tweaked toml for git repo https://github.com/hoardexchange/cacherz written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/hoardexchange/cacherz already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: unused manifest key: llvm
[INFO] [stderr] warning: unused manifest key: rust
[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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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] 2883a1da68b64cb85c5c89dcf5e02d83bef479bd2c33cb8502930dd0762ddcb4
[INFO] running `"docker" "start" "-a" "2883a1da68b64cb85c5c89dcf5e02d83bef479bd2c33cb8502930dd0762ddcb4"`
[INFO] [stderr] warning: unused manifest key: llvm
[INFO] [stderr] warning: unused manifest key: rust
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]     Checking rustc-hex v2.0.1
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling actix-web v0.7.16
[INFO] [stderr]    Compiling base64 v0.5.2
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]     Checking tokio-timer v0.2.8
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking time v0.1.41
[INFO] [stderr]     Checking signal-hook v0.1.6
[INFO] [stderr]     Checking ethereum-types-serialize v0.2.1
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking resolv-conf v0.6.1
[INFO] [stderr]    Compiling arrayvec v0.4.8
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]     Checking serde_urlencoded v0.5.4
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking crossbeam-deque v0.6.2
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking tiny-keccak v1.4.2
[INFO] [stderr]     Checking uint v0.4.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.9
[INFO] [stderr]    Compiling num_cpus v1.9.0
[INFO] [stderr]     Checking fixed-hash v0.2.5
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking tokio-io v0.1.10
[INFO] [stderr]     Checking http v0.1.14
[INFO] [stderr]     Checking parking_lot v0.7.0
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]     Checking ethbloom v0.5.0
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking uuid v0.7.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.3
[INFO] [stderr]     Checking ethereum-types v0.4.0
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking tokio-reactor v0.1.7
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]    Compiling phf_codegen v0.7.23
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio-uds v0.2.4
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]     Checking h2 v0.1.14
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking tokio v0.1.13
[INFO] [stderr]    Compiling cc v1.0.26
[INFO] [stderr]     Checking hyper v0.12.18
[INFO] [stderr]    Compiling blob v0.2.0
[INFO] [stderr]    Compiling cmake v0.1.35
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling openssl-sys v0.9.39
[INFO] [stderr]    Compiling zstd-sys v1.4.6+zstd.1.3.7 (https://github.com/gyscos/zstd-rs.git#ef551d24)
[INFO] [stderr]    Compiling lz4-sys v1.8.0 (https://github.com/busyjay/lz4-rs.git?branch=adjust-build#41509fea)
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling bzip2-sys v0.1.7 (https://github.com/alexcrichton/bzip2-rs.git#50c3d852)
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling rlua v0.15.3
[INFO] [stderr]    Compiling snappy-sys v0.1.0 (https://github.com/busyjay/rust-snappy.git?branch=static-link#be021783)
[INFO] [stderr]    Compiling librocksdb_sys v0.1.0 (https://github.com/pingcap/rust-rocksdb.git#43393ed5)
[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-0.15.22/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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=ac89ed69cd1cd31e -C extra-filename=-ac89ed69cd1cd31e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-0989b93b402b0abd.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-44124abac810ae30.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-fd0395677b5ee920.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" "2883a1da68b64cb85c5c89dcf5e02d83bef479bd2c33cb8502930dd0762ddcb4"`
[INFO] running `"docker" "rm" "-f" "2883a1da68b64cb85c5c89dcf5e02d83bef479bd2c33cb8502930dd0762ddcb4"`
[INFO] [stdout] 2883a1da68b64cb85c5c89dcf5e02d83bef479bd2c33cb8502930dd0762ddcb4