[INFO] cloning repository https://github.com/lispczz/dingir-exchange
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lispczz/dingir-exchange" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flispczz%2Fdingir-exchange", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flispczz%2Fdingir-exchange'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c232063df24250a49fa44f6b76a1c9662c0e388c
[INFO] testing lispczz/dingir-exchange against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flispczz%2Fdingir-exchange" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lispczz/dingir-exchange on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/lispczz/dingir-exchange
[INFO] finished tweaking git repo https://github.com/lispczz/dingir-exchange
[INFO] tweaked toml for git repo https://github.com/lispczz/dingir-exchange written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/lispczz/dingir-exchange already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e62b00561dffee0f830a31c9a3b7c6d121bff504b076b04ff5d21c4e13e7538
[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" "1e62b00561dffee0f830a31c9a3b7c6d121bff504b076b04ff5d21c4e13e7538", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e62b00561dffee0f830a31c9a3b7c6d121bff504b076b04ff5d21c4e13e7538", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e62b00561dffee0f830a31c9a3b7c6d121bff504b076b04ff5d21c4e13e7538", kill_on_drop: false }`
[INFO] [stdout] 1e62b00561dffee0f830a31c9a3b7c6d121bff504b076b04ff5d21c4e13e7538
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0cfcfb71909f8080d7ecd64fdb4a71a4dd76ea28115dcbe9e3d34077442dc23
[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" "d0cfcfb71909f8080d7ecd64fdb4a71a4dd76ea28115dcbe9e3d34077442dc23", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling subtle v2.4.0
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling lexical-core v0.7.5
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling whoami v1.1.0
[INFO] [stderr]    Compiling tower-layer v0.3.1
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling rustc-hex v1.0.0
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling standback v0.2.15
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling time v0.2.25
[INFO] [stderr]    Compiling actix-service v2.0.0-beta.4
[INFO] [stderr]    Compiling cookie v0.14.4
[INFO] [stderr]    Compiling ahash v0.6.3
[INFO] [stderr]    Compiling ahash v0.7.2
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling bytestring v1.0.0
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling qstring v0.7.2
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling blake v2.0.1
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling ttl_cache v0.5.1
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling http-body v0.4.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling stringprep v0.1.2
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling hashlink v0.6.0
[INFO] [stderr]    Compiling bitvec v0.19.5
[INFO] [stderr]    Compiling rdkafka-sys v3.0.0+1.6.0
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling tiny-keccak v1.5.0
[INFO] [stderr]    Compiling crypto-mac v0.10.0
[INFO] [stderr]    Compiling url v2.2.1
[INFO] [stderr]    Compiling sha2 v0.9.3
[INFO] [stderr]    Compiling sha-1 v0.9.4
[INFO] [stderr]    Compiling md-5 v0.9.1
[INFO] [stderr]    Compiling hmac v0.10.1
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling serde_test v0.8.23
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling atoi v0.4.0
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.1
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling mio v0.7.9
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling serde-hjson v0.9.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling webpki v0.21.4
[INFO] [stderr]    Compiling sct v0.6.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling rustls v0.19.0
[INFO] [stderr]    Compiling webpki-roots v0.21.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling brotli2 v0.3.2
[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-1.0.63/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"' --cfg 'feature="visit-mut"' -C metadata=36f83dfb1848a5d6 -C extra-filename=-36f83dfb1848a5d6 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-1a6a39c3cd9b115f.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-1be2cecfcfd4ab86.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-accda8c4d770d472.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" "d0cfcfb71909f8080d7ecd64fdb4a71a4dd76ea28115dcbe9e3d34077442dc23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0cfcfb71909f8080d7ecd64fdb4a71a4dd76ea28115dcbe9e3d34077442dc23", kill_on_drop: false }`
[INFO] [stdout] d0cfcfb71909f8080d7ecd64fdb4a71a4dd76ea28115dcbe9e3d34077442dc23