[INFO] cloning repository https://github.com/PeterGrace/herald
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PeterGrace/herald" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeterGrace%2Fherald", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeterGrace%2Fherald'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 280d1b30797766ee773df374f7adf322bef0e452
[INFO] testing PeterGrace/herald against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeterGrace%2Fherald" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PeterGrace/herald on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config
[INFO] started tweaking git repo https://github.com/PeterGrace/herald
[INFO] finished tweaking git repo https://github.com/PeterGrace/herald
[INFO] tweaked toml for git repo https://github.com/PeterGrace/herald written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/PeterGrace/herald already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78c141e6d2ade9c89699924d83b60f529f95edf516f9d8b5a99cbbebff8a9b9b
[INFO] running `Command { std: "docker" "start" "-a" "78c141e6d2ade9c89699924d83b60f529f95edf516f9d8b5a99cbbebff8a9b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78c141e6d2ade9c89699924d83b60f529f95edf516f9d8b5a99cbbebff8a9b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78c141e6d2ade9c89699924d83b60f529f95edf516f9d8b5a99cbbebff8a9b9b", kill_on_drop: false }`
[INFO] [stdout] 78c141e6d2ade9c89699924d83b60f529f95edf516f9d8b5a99cbbebff8a9b9b
[INFO] running `Command { std: "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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4286647c4addc90861e0aa02083e6b1d11cc639af08f2ae7903f98ab9a4d12a3
[INFO] running `Command { std: "docker" "start" "-a" "4286647c4addc90861e0aa02083e6b1d11cc639af08f2ae7903f98ab9a4d12a3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.6
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling futures-core v0.3.13
[INFO] [stderr]    Compiling futures-sink v0.3.13
[INFO] [stderr]    Compiling futures-io v0.3.13
[INFO] [stderr]    Compiling futures-task v0.3.13
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling k8s-openapi v0.11.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling dtoa v0.4.7
[INFO] [stderr]    Compiling tower-layer v0.3.1
[INFO] [stderr]    Compiling array_tool v1.0.3
[INFO] [stderr]    Compiling protobuf v2.22.0
[INFO] [stderr]    Compiling schemars v0.8.0
[INFO] [stderr]    Compiling object v0.23.0
[INFO] [stderr]    Compiling prometheus v0.11.0
[INFO] [stderr]    Compiling num-cmp v0.1.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling quick-error v2.0.0
[INFO] [stderr]    Compiling dyn-clone v1.0.4
[INFO] [stderr]    Compiling case v0.1.0
[INFO] [stderr]    Compiling strum v0.20.0
[INFO] [stderr]    Compiling auditable v0.1.0
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling sharded-slab v0.1.1
[INFO] [stderr]    Compiling ahash v0.7.2
[INFO] [stderr]    Compiling addr2line v0.14.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.17
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling idna 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 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.11.11/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="quote"' --cfg 'feature="synom"' --cfg 'feature="unicode-xid"' -C metadata=82956b5314d1ebf8 -C extra-filename=-82956b5314d1ebf8 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern quote=/opt/rustwide/target/debug/deps/libquote-b2c35a218d36bb02.rmeta --extern synom=/opt/rustwide/target/debug/deps/libsynom-4b1c9bdcc8c8e2e4.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-cd1c3572c9c6f6da.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" "4286647c4addc90861e0aa02083e6b1d11cc639af08f2ae7903f98ab9a4d12a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4286647c4addc90861e0aa02083e6b1d11cc639af08f2ae7903f98ab9a4d12a3", kill_on_drop: false }`
[INFO] [stdout] 4286647c4addc90861e0aa02083e6b1d11cc639af08f2ae7903f98ab9a4d12a3