[INFO] fetching crate cxx2flow 0.5.9...
[INFO] documenting cxx2flow-0.5.9 against master#e1df625306f4136949e02612406f0c60df6008f3 for pr-96676
[INFO] extracting crate cxx2flow 0.5.9 into /workspace/builds/worker-52/source
[INFO] validating manifest of crates.io crate cxx2flow 0.5.9 on toolchain e1df625306f4136949e02612406f0c60df6008f3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cxx2flow 0.5.9
[INFO] finished tweaking crates.io crate cxx2flow 0.5.9
[INFO] tweaked toml for crates.io crate cxx2flow 0.5.9 written to /workspace/builds/worker-52/source/Cargo.toml
[INFO] crate crates.io crate cxx2flow 0.5.9 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded supports-unicode v1.0.2
[INFO] [stderr]   Downloaded miette v4.3.0
[INFO] [stderr]   Downloaded supports-color v1.3.0
[INFO] [stderr]   Downloaded miette-derive v4.3.0
[INFO] [stderr]   Downloaded is_ci v1.1.1
[INFO] [stderr]   Downloaded supports-hyperlinks v1.2.0
[INFO] [stderr]   Downloaded getset v0.1.2
[INFO] [stderr]   Downloaded object v0.26.0
[INFO] [stderr]   Downloaded tree-sitter v0.20.6
[INFO] [stderr]   Downloaded enum_dispatch v0.3.8
[INFO] [stderr]   Downloaded sysinfo v0.23.6
[INFO] [stderr]   Downloaded tree-sitter-cpp v0.20.0
[INFO] [stderr]   Downloaded hash-chain v0.3.2
[INFO] [stderr]   Downloaded fixedbitset v0.4.0
[INFO] [stderr]   Downloaded vergen v7.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a2b948e3720230aef7c7859abc469a22b9ec6b1a69943134a51a3b76c52b8434
[INFO] running `Command { std: "docker" "start" "-a" "a2b948e3720230aef7c7859abc469a22b9ec6b1a69943134a51a3b76c52b8434", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2b948e3720230aef7c7859abc469a22b9ec6b1a69943134a51a3b76c52b8434", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2b948e3720230aef7c7859abc469a22b9ec6b1a69943134a51a3b76c52b8434", kill_on_drop: false }`
[INFO] [stdout] a2b948e3720230aef7c7859abc469a22b9ec6b1a69943134a51a3b76c52b8434
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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" "RUSTDOCFLAGS=--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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb5ca24d3464293ee86f575fcf68bd845df26091d815a540daf2bac7a6f3dba1
[INFO] running `Command { std: "docker" "start" "-a" "eb5ca24d3464293ee86f575fcf68bd845df26091d815a540daf2bac7a6f3dba1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling num_threads v0.1.5
[INFO] [stderr]    Compiling unicode-bidi v0.3.7
[INFO] [stderr]    Compiling sysinfo v0.23.6
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]     Checking is_ci v1.1.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking fixedbitset v0.4.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking owo-colors v3.2.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking hash-chain v0.3.2
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling tinyvec v1.5.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking object v0.26.0
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.25/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="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=c25dc19d7487cdf7 -C extra-filename=-c25dc19d7487cdf7 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "eb5ca24d3464293ee86f575fcf68bd845df26091d815a540daf2bac7a6f3dba1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb5ca24d3464293ee86f575fcf68bd845df26091d815a540daf2bac7a6f3dba1", kill_on_drop: false }`
[INFO] [stdout] eb5ca24d3464293ee86f575fcf68bd845df26091d815a540daf2bac7a6f3dba1