[INFO] fetching crate varisat-cli 0.2.1...
[INFO] documenting varisat-cli-0.2.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate varisat-cli 0.2.1 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate varisat-cli 0.2.1 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate varisat-cli 0.2.1
[INFO] finished tweaking crates.io crate varisat-cli 0.2.1
[INFO] tweaked toml for crates.io crate varisat-cli 0.2.1 written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded varisat-formula v0.2.1
[INFO] [stderr]   Downloaded varisat-lrat v0.2.1
[INFO] [stderr]   Downloaded varisat-checker v0.2.1
[INFO] [stderr]   Downloaded varisat-internal-proof v0.2.1
[INFO] [stderr]   Downloaded vec_mut_scan v0.1.0
[INFO] [stderr]   Downloaded varisat-internal-macros v0.2.1
[INFO] [stderr]   Downloaded varisat v0.2.1
[INFO] [stderr]   Downloaded varisat-dimacs v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 872c16a138f035db3662e09b0ec93703f5a7f52248e3137d29a90ad12adfef8f
[INFO] running `Command { std: "docker" "start" "-a" "872c16a138f035db3662e09b0ec93703f5a7f52248e3137d29a90ad12adfef8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "872c16a138f035db3662e09b0ec93703f5a7f52248e3137d29a90ad12adfef8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "872c16a138f035db3662e09b0ec93703f5a7f52248e3137d29a90ad12adfef8f", kill_on_drop: false }`
[INFO] [stdout] 872c16a138f035db3662e09b0ec93703f5a7f52248e3137d29a90ad12adfef8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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=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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9666771296f34ffc4977191cf79099a95c9f840ffc12f0afe9ed8a2f5e935fd7
[INFO] running `Command { std: "docker" "start" "-a" "9666771296f34ffc4977191cf79099a95c9f840ffc12f0afe9ed8a2f5e935fd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking varisat-formula v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking hashbrown v0.3.1
[INFO] [stderr]    Compiling regex-syntax v0.6.26
[INFO] [stderr]     Checking leb128 v0.2.5
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]    Compiling varisat-cli v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking vec_mut_scan v0.1.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.95/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="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=1f0c6a818d56dad3 -C extra-filename=-1f0c6a818d56dad3 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-9a37b41b1fcfff72.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-dc3adb69f55702af.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-53e66da7b391b858.rmeta --cap-lints allow --cfg syn_disable_nightly_tests` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9666771296f34ffc4977191cf79099a95c9f840ffc12f0afe9ed8a2f5e935fd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9666771296f34ffc4977191cf79099a95c9f840ffc12f0afe9ed8a2f5e935fd7", kill_on_drop: false }`
[INFO] [stdout] 9666771296f34ffc4977191cf79099a95c9f840ffc12f0afe9ed8a2f5e935fd7