[INFO] fetching crate below-dump 0.3.0...
[INFO] testing below-dump-0.3.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate below-dump 0.3.0 into /workspace/builds/worker-38/source
[INFO] validating manifest of crates.io crate below-dump 0.3.0 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 crates.io crate below-dump 0.3.0
[INFO] finished tweaking crates.io crate below-dump 0.3.0
[INFO] tweaked toml for crates.io crate below-dump 0.3.0 written to /workspace/builds/worker-38/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] d6c7338617892ed5241ccd905ff6396908763de29468d2c1e4c8590ded2e7237
[INFO] running `Command { std: "docker" "start" "-a" "d6c7338617892ed5241ccd905ff6396908763de29468d2c1e4c8590ded2e7237", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6c7338617892ed5241ccd905ff6396908763de29468d2c1e4c8590ded2e7237", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6c7338617892ed5241ccd905ff6396908763de29468d2c1e4c8590ded2e7237", kill_on_drop: false }`
[INFO] [stdout] d6c7338617892ed5241ccd905ff6396908763de29468d2c1e4c8590ded2e7237
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] 823894ceba596ba2ea57c281461efa1a59f83cfdfb955a9f77fe74f80c6132e4
[INFO] running `Command { std: "docker" "start" "-a" "823894ceba596ba2ea57c281461efa1a59f83cfdfb955a9f77fe74f80c6132e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling array-macro v1.0.5
[INFO] [stderr]    Compiling xi-unicode v0.3.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling zstd-safe v4.0.0+zstd.1.4.9
[INFO] [stderr]    Compiling match_cfg v0.1.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling half v1.7.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling owning_ref v0.4.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling ahash v0.6.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling openat v0.1.21
[INFO] [stderr]    Compiling termion v1.5.6
[INFO] [stderr]    Compiling nix v0.20.1
[INFO] [stderr]    Compiling hostname v0.3.1
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling signal-hook v0.1.17
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling crossterm v0.19.0
[INFO] [stderr]    Compiling zstd-sys v1.5.0+zstd.1.4.9
[INFO] [stderr]    Compiling num v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling enum-map-derive v0.4.6
[INFO] [stderr]    Compiling below_derive v0.3.0
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr] error: could not compile `nix`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nix --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nix-0.20.1/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 -C metadata=c54065e3f0ea6313 -C extra-filename=-c54065e3f0ea6313 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-117d41ac256572da.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-dece450273084492.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-3daf5756cb8889ad.rmeta --extern memoffset=/opt/rustwide/target/debug/deps/libmemoffset-cfa241b6ab16dc70.rmeta --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" "823894ceba596ba2ea57c281461efa1a59f83cfdfb955a9f77fe74f80c6132e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "823894ceba596ba2ea57c281461efa1a59f83cfdfb955a9f77fe74f80c6132e4", kill_on_drop: false }`
[INFO] [stdout] 823894ceba596ba2ea57c281461efa1a59f83cfdfb955a9f77fe74f80c6132e4