[INFO] fetching crate syntaxdot 0.1.0...
[INFO] checking syntaxdot-0.1.0 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate syntaxdot 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate syntaxdot 0.1.0 on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syntaxdot 0.1.0
[INFO] finished tweaking crates.io crate syntaxdot 0.1.0
[INFO] tweaked toml for crates.io crate syntaxdot 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6cd7081058d55742b919eb0cb3b9c40a1c4842771947e2c9d3e838c6ed898d6a
[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" "6cd7081058d55742b919eb0cb3b9c40a1c4842771947e2c9d3e838c6ed898d6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cd7081058d55742b919eb0cb3b9c40a1c4842771947e2c9d3e838c6ed898d6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cd7081058d55742b919eb0cb3b9c40a1c4842771947e2c9d3e838c6ed898d6a", kill_on_drop: false }`
[INFO] [stdout] 6cd7081058d55742b919eb0cb3b9c40a1c4842771947e2c9d3e838c6ed898d6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb44cfad8c9f5c397e64d8a5b9f203f00c4e1b19409a55a4126120eeb784c3d1
[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" "cb44cfad8c9f5c397e64d8a5b9f203f00c4e1b19409a55a4126120eeb784c3d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.50
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling curl v0.4.34
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling fst v0.4.5
[INFO] [stderr]    Compiling anyhow v1.0.34
[INFO] [stderr]     Checking half v1.6.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking smallvec v1.5.0
[INFO] [stderr]     Checking seqalign v0.2.2
[INFO] [stderr]    Compiling hdf5 v0.7.0
[INFO] [stderr]     Checking ascii v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crossbeam-utils v0.8.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling curl-sys v0.4.38+curl-7.73.0
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling libloading v0.6.5
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking hdf5-types v0.7.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling socket2 v0.3.17
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling sentencepiece-sys v0.5.0
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]    Compiling backtrace v0.3.55
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]     Checking crossbeam-epoch v0.9.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[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-1.0.50/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -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=ccd547c593b41e4b -C extra-filename=-ccd547c593b41e4b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-8a8bb825df9136cb.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-944c052ceb08ffd8.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-083414e3434d8e82.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 `Command { std: "docker" "inspect" "cb44cfad8c9f5c397e64d8a5b9f203f00c4e1b19409a55a4126120eeb784c3d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb44cfad8c9f5c397e64d8a5b9f203f00c4e1b19409a55a4126120eeb784c3d1", kill_on_drop: false }`
[INFO] [stdout] cb44cfad8c9f5c397e64d8a5b9f203f00c4e1b19409a55a4126120eeb784c3d1