[INFO] cloning repository https://github.com/lettenj61/rig
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lettenj61/rig" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flettenj61%2Frig", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flettenj61%2Frig'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1d32c8bd6b1414140be3b52741b067f97550c536
[INFO] testing lettenj61/rig against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flettenj61%2Frig" "/workspace/builds/worker-61/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-61/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lettenj61/rig on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lettenj61/rig
[INFO] finished tweaking git repo https://github.com/lettenj61/rig
[INFO] tweaked toml for git repo https://github.com/lettenj61/rig written to /workspace/builds/worker-61/source/Cargo.toml
[INFO] crate git repo https://github.com/lettenj61/rig already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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 metadeps v1.1.1
[INFO] [stderr]   Downloaded toml v0.3.0
[INFO] [stderr]   Downloaded env_logger v0.4.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.6
[INFO] [stderr]   Downloaded humansize v1.0.0
[INFO] [stderr]   Downloaded serde_json v0.9.5
[INFO] [stderr]   Downloaded serde v0.9.6
[INFO] [stderr]   Downloaded gcc v0.3.42
[INFO] [stderr]   Downloaded same-file v0.1.2
[INFO] [stderr]   Downloaded combine v2.2.2
[INFO] [stderr]   Downloaded cmake v0.1.20
[INFO] [stderr]   Downloaded libssh2-sys v0.2.5
[INFO] [stderr]   Downloaded openssl-probe v0.1.0
[INFO] [stderr]   Downloaded git2 v0.6.4
[INFO] [stderr]   Downloaded java-properties v1.0.0
[INFO] [stderr]   Downloaded tera v0.7.1
[INFO] [stderr]   Downloaded libz-sys v1.0.12
[INFO] [stderr]   Downloaded curl-sys v0.3.7
[INFO] [stderr]   Downloaded libgit2-sys v0.6.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 584c1b4a2bc9a89619e9169f5b26695dbd3ba457382fa206f9c75dccffb1ed3f
[INFO] running `Command { std: "docker" "start" "-a" "584c1b4a2bc9a89619e9169f5b26695dbd3ba457382fa206f9c75dccffb1ed3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "584c1b4a2bc9a89619e9169f5b26695dbd3ba457382fa206f9c75dccffb1ed3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "584c1b4a2bc9a89619e9169f5b26695dbd3ba457382fa206f9c75dccffb1ed3f", kill_on_drop: false }`
[INFO] [stdout] 584c1b4a2bc9a89619e9169f5b26695dbd3ba457382fa206f9c75dccffb1ed3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9efd75b450bfa88726a84958db6f90123b5575415b06e01f0cbb1d21dfd91f6
[INFO] running `Command { std: "docker" "start" "-a" "c9efd75b450bfa88726a84958db6f90123b5575415b06e01f0cbb1d21dfd91f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.20
[INFO] [stderr]    Compiling gcc v0.3.42
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling error-chain v0.7.2
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling num-traits v0.1.36
[INFO] [stderr]    Compiling matches v0.1.4
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.3
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.4.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.3
[INFO] [stderr]    Compiling serde v0.9.6
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling unidecode v0.2.0
[INFO] [stderr]    Compiling itoa v0.3.1
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling dtoa v0.4.1
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling lazy_static v0.2.2
[INFO] [stderr]    Compiling humansize v1.0.0
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling pest v0.4.1
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling openssl-probe v0.1.0
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling ascii v0.7.1
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling unicode-bidi v0.2.4
[INFO] [stderr]    Compiling encoding-index-japanese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-korean v1.20141219.5
[INFO] [stderr]    Compiling cmake v0.1.20
[INFO] [stderr]    Compiling metadeps v1.1.1
[INFO] [stderr]    Compiling thread-id v3.0.0
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling same-file v0.1.2
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling num-integer v0.1.32
[INFO] [stderr]    Compiling slug v0.1.2
[INFO] [stderr]    Compiling combine v2.2.2
[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-0.9.6/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=b08067d24a61fc8d -C extra-filename=-b08067d24a61fc8d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (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" "c9efd75b450bfa88726a84958db6f90123b5575415b06e01f0cbb1d21dfd91f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9efd75b450bfa88726a84958db6f90123b5575415b06e01f0cbb1d21dfd91f6", kill_on_drop: false }`
[INFO] [stdout] c9efd75b450bfa88726a84958db6f90123b5575415b06e01f0cbb1d21dfd91f6