[INFO] cloning repository https://github.com/valtyr/bfcc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/valtyr/bfcc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaltyr%2Fbfcc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaltyr%2Fbfcc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 84bb8bdddfb71d215ebe19c850d0c51f349436a7
[INFO] testing valtyr/bfcc against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaltyr%2Fbfcc" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/valtyr/bfcc on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/valtyr/bfcc
[INFO] finished tweaking git repo https://github.com/valtyr/bfcc
[INFO] tweaked toml for git repo https://github.com/valtyr/bfcc written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/valtyr/bfcc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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 zmq-sys v0.11.0
[INFO] [stderr]   Downloaded metadeps v1.1.2
[INFO] [stderr]   Downloaded escape_string v0.1.1
[INFO] [stderr]   Downloaded zeromq-src v0.1.10+4.3.2
[INFO] [stderr]   Downloaded zmq v0.9.2
[INFO] [stderr]   Downloaded pest_ascii_tree v0.1.0
[INFO] [stderr]   Downloaded ascii_tree v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a109a486d2078b77b801d06d9c89563875833dcc7a79d643d50fdbe57706415f
[INFO] running `Command { std: "docker" "start" "-a" "a109a486d2078b77b801d06d9c89563875833dcc7a79d643d50fdbe57706415f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a109a486d2078b77b801d06d9c89563875833dcc7a79d643d50fdbe57706415f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a109a486d2078b77b801d06d9c89563875833dcc7a79d643d50fdbe57706415f", kill_on_drop: false }`
[INFO] [stdout] a109a486d2078b77b801d06d9c89563875833dcc7a79d643d50fdbe57706415f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7740c28328dca41e3e4c0152d87f41f594462a25f8f260556138946b39772fcb
[INFO] running `Command { std: "docker" "start" "-a" "7740c28328dca41e3e4c0152d87f41f594462a25f8f260556138946b39772fcb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.78
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling bumpalo v3.8.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.74
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling zmq v0.9.2
[INFO] [stderr]    Compiling wasm-bindgen v0.2.78
[INFO] [stderr]    Compiling ascii_tree v0.1.1
[INFO] [stderr]    Compiling escape_string v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling cmake v0.1.46
[INFO] [stderr]    Compiling zeromq-src v0.1.10+4.3.2
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling zmq-sys v0.11.0
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.78
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.78
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.78
[INFO] [stderr]    Compiling pest_ascii_tree v0.1.0
[INFO] [stderr] error: could not compile `serde_json`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde_json --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_json-1.0.74/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=c881c06ec39b4ae5 -C extra-filename=-c881c06ec39b4ae5 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern itoa=/opt/rustwide/target/debug/deps/libitoa-eb0b0da4f5c7fd02.rmeta --extern ryu=/opt/rustwide/target/debug/deps/libryu-53580c25f32ff188.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-ed4d94fe43440c58.rmeta --cap-lints allow --cap-lints=warn --cfg limb_width_64` (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" "7740c28328dca41e3e4c0152d87f41f594462a25f8f260556138946b39772fcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7740c28328dca41e3e4c0152d87f41f594462a25f8f260556138946b39772fcb", kill_on_drop: false }`
[INFO] [stdout] 7740c28328dca41e3e4c0152d87f41f594462a25f8f260556138946b39772fcb