[INFO] cloning repository https://github.com/july2993/zergling
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/july2993/zergling" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuly2993%2Fzergling", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuly2993%2Fzergling'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f20431365e31932f00734be0ba71e7d890675a59
[INFO] testing july2993/zergling against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuly2993%2Fzergling" "/workspace/builds/worker-64/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-64/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/july2993/zergling 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] started tweaking git repo https://github.com/july2993/zergling
[INFO] finished tweaking git repo https://github.com/july2993/zergling
[INFO] tweaked toml for git repo https://github.com/july2993/zergling written to /workspace/builds/worker-64/source/Cargo.toml
[INFO] crate git repo https://github.com/july2993/zergling 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crc v1.6.0
[INFO] [stderr]   Downloaded clippy v0.0.174
[INFO] [stderr]   Downloaded clippy_lints v0.0.174
[INFO] [stderr]   Downloaded cmake v0.1.28
[INFO] [stderr]   Downloaded grpcio v0.1.2
[INFO] [stderr]   Downloaded prometheus v0.3.3
[INFO] [stderr]   Downloaded protobuf v1.4.2
[INFO] [stderr]   Downloaded clap v2.27.1
[INFO] [stderr]   Downloaded twoway v0.1.7
[INFO] [stderr]   Downloaded hyper v0.11.7
[INFO] [stderr]   Downloaded memchr v2.0.0
[INFO] [stderr]   Downloaded grpcio-sys v0.1.2
[INFO] [stderr]   Downloaded httpbis v0.4.1
[INFO] [stderr]   Downloaded tls-api-stub v0.1.11
[INFO] [stderr]   Downloaded tls-api v0.1.11
[INFO] [stderr]   Downloaded if_chain v0.1.2
[INFO] [stderr]   Downloaded multipart v0.13.3
[INFO] [stderr]   Downloaded tokio-tls-api v0.1.11
[INFO] [stderr]   Downloaded lru v0.1.4
[INFO] [stderr]   Downloaded grpc v0.2.1
[INFO] [stderr]   Downloaded signal v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] 81c415b11f84659df9fdf38fca748de3575dd0bb18fb45c790e69d605c603be0
[INFO] running `Command { std: "docker" "start" "-a" "81c415b11f84659df9fdf38fca748de3575dd0bb18fb45c790e69d605c603be0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81c415b11f84659df9fdf38fca748de3575dd0bb18fb45c790e69d605c603be0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81c415b11f84659df9fdf38fca748de3575dd0bb18fb45c790e69d605c603be0", kill_on_drop: false }`
[INFO] [stdout] 81c415b11f84659df9fdf38fca748de3575dd0bb18fb45c790e69d605c603be0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] 0cb9f995a2bbbbd9ce4ad098f83aec95613f5e5707ff99420eb526a3a12e7215
[INFO] running `Command { std: "docker" "start" "-a" "0cb9f995a2bbbbd9ce4ad098f83aec95613f5e5707ff99420eb526a3a12e7215", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.33
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling futures v0.1.17
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling httparse v1.2.3
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling lazycell v0.5.1
[INFO] [stderr]    Compiling modifier v0.1.0
[INFO] [stderr]    Compiling slab v0.4.0
[INFO] [stderr]    Compiling scoped-tls v0.1.0
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling build_const v0.2.0
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling nom v1.2.4
[INFO] [stderr]    Compiling safemem v0.1.1
[INFO] [stderr]    Compiling chunked_transfer v0.3.1
[INFO] [stderr]    Compiling serde v1.0.21
[INFO] [stderr]    Compiling smallvec v0.2.1
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling traitobject v0.0.1
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling take v0.1.0
[INFO] [stderr]    Compiling ascii v0.7.1
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling quick-error v0.2.2
[INFO] [stderr]    Compiling adler32 v1.0.2
[INFO] [stderr]    Compiling route-recognizer v0.1.12
[INFO] [stderr]    Compiling lru v0.1.4
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling conduit-mime-types v0.7.3
[INFO] [stderr]    Compiling unsafe-any v0.4.2
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling tls-api v0.1.11
[INFO] [stderr]    Compiling hpack v0.2.0
[INFO] [stderr]    Compiling error v0.1.9
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling base64 v0.8.0
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling num_cpus v1.7.0
[INFO] [stderr]    Compiling iovec v0.1.1
[INFO] [stderr]    Compiling rand v0.3.18
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling memchr v2.0.0
[INFO] [stderr]    Compiling atty v0.2.3
[INFO] [stderr]    Compiling nix v0.9.0
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling num-integer v0.1.35
[INFO] [stderr]    Compiling cmake v0.1.28
[INFO] [stderr]    Compiling tls-api-stub v0.1.11
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling crc v1.6.0
[INFO] [stderr]    Compiling idna v0.1.4
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling futures-cpupool v0.1.7
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling tokio-timer v0.1.2
[INFO] [stderr]    Compiling relay v0.1.0
[INFO] [stderr]    Compiling twoway v0.1.7
[INFO] [stderr]    Compiling clap v2.27.1
[INFO] [stderr]    Compiling plugin v0.2.6
[INFO] [stderr]    Compiling buf_redux v0.6.1
[INFO] [stderr]    Compiling bytes v0.4.5
[INFO] [stderr] error: could not compile `serde`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.21/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="default"' --cfg 'feature="std"' -C metadata=f446e399b12e80a0 -C extra-filename=-f446e399b12e80a0 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --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" "0cb9f995a2bbbbd9ce4ad098f83aec95613f5e5707ff99420eb526a3a12e7215", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cb9f995a2bbbbd9ce4ad098f83aec95613f5e5707ff99420eb526a3a12e7215", kill_on_drop: false }`
[INFO] [stdout] 0cb9f995a2bbbbd9ce4ad098f83aec95613f5e5707ff99420eb526a3a12e7215