[INFO] fetching crate mdbook-graphviz 0.1.4...
[INFO] testing mdbook-graphviz-0.1.4 against 1.59.0 for beta-1.60-1
[INFO] extracting crate mdbook-graphviz 0.1.4 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate mdbook-graphviz 0.1.4 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdbook-graphviz 0.1.4
[INFO] finished tweaking crates.io crate mdbook-graphviz 0.1.4
[INFO] tweaked toml for crates.io crate mdbook-graphviz 0.1.4 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate mdbook-graphviz 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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 pulldown-cmark-to-cmark v9.0.0
[INFO] [stderr]   Downloaded clap v3.0.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21dd0638065ce8fb43304acf2be51d00612af604bf84f4737191c2f13af7a10d
[INFO] running `Command { std: "docker" "start" "-a" "21dd0638065ce8fb43304acf2be51d00612af604bf84f4737191c2f13af7a10d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21dd0638065ce8fb43304acf2be51d00612af604bf84f4737191c2f13af7a10d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21dd0638065ce8fb43304acf2be51d00612af604bf84f4737191c2f13af7a10d", kill_on_drop: false }`
[INFO] [stdout] 21dd0638065ce8fb43304acf2be51d00612af604bf84f4737191c2f13af7a10d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38e73ec998de26f47c8a07f943d8771d91316c582c04b6fdaee386b9f8ebee0e
[INFO] running `Command { std: "docker" "start" "-a" "38e73ec998de26f47c8a07f943d8771d91316c582c04b6fdaee386b9f8ebee0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling futures-sink v0.3.19
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.7
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling serde_json v1.0.74
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling pulldown-cmark v0.9.0
[INFO] [stderr]    Compiling httpdate v1.0.2
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling strum v0.21.0
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling quick-error v2.0.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling textwrap v0.14.2
[INFO] [stderr]    Compiling topological-sort v0.1.0
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling tracing-core v0.1.21
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling gitignore v1.0.7
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr]    Compiling tinyvec v1.5.1
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling http v0.2.6
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling futf v0.1.4
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling tracing v0.1.29
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling tendril v0.4.2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling mio v0.7.14
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling socket2 v0.4.2
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling opener v0.5.0
[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-1.0.84/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="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit-mut"' -C metadata=16fd44b332bddd11 -C extra-filename=-16fd44b332bddd11 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-e91ec37ac01f916c.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-4616098a19b7ebda.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-aeb18ec3bc792598.rmeta --cap-lints allow --cap-lints=warn --cfg syn_disable_nightly_tests` (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" "38e73ec998de26f47c8a07f943d8771d91316c582c04b6fdaee386b9f8ebee0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38e73ec998de26f47c8a07f943d8771d91316c582c04b6fdaee386b9f8ebee0e", kill_on_drop: false }`
[INFO] [stdout] 38e73ec998de26f47c8a07f943d8771d91316c582c04b6fdaee386b9f8ebee0e