[INFO] cloning repository https://github.com/ivoelbert/tigerust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ivoelbert/tigerust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivoelbert%2Ftigerust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivoelbert%2Ftigerust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fecdca44a6969cb1e12466cdb394bcd4b54ab1f3
[INFO] documenting ivoelbert/tigerust against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivoelbert%2Ftigerust" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ivoelbert/tigerust 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 git repo https://github.com/ivoelbert/tigerust
[INFO] finished tweaking git repo https://github.com/ivoelbert/tigerust
[INFO] tweaked toml for git repo https://github.com/ivoelbert/tigerust written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/ivoelbert/tigerust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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 wasmi v0.6.2
[INFO] [stderr]   Downloaded syn v0.15.39
[INFO] [stderr]   Downloaded serde_derive v1.0.94
[INFO] [stderr]   Downloaded serde v1.0.94
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.34
[INFO] [stderr]   Downloaded console_error_panic_hook v0.1.5
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.34
[INFO] [stderr]   Downloaded utf8-ranges v1.0.3
[INFO] [stderr]   Downloaded js-sys v0.3.11
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.2.34
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.34
[INFO] [stderr]   Downloaded regex v1.2.0
[INFO] [stderr]   Downloaded aho-corasick v0.7.4
[INFO] [stderr]   Downloaded backtrace v0.3.32
[INFO] [stderr]   Downloaded rustc-demangle v0.1.15
[INFO] [stderr]   Downloaded lalrpop-util v0.17.1
[INFO] [stderr]   Downloaded ena v0.13.0
[INFO] [stderr]   Downloaded itertools v0.8.0
[INFO] [stderr]   Downloaded strsim v0.9.2
[INFO] [stderr]   Downloaded string_cache_codegen v0.4.2
[INFO] [stderr]   Downloaded wasmparser v0.51.4
[INFO] [stderr]   Downloaded cc v1.0.54
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.34
[INFO] [stderr]   Downloaded ascii-canvas v2.0.0
[INFO] [stderr]   Downloaded lalrpop v0.17.1
[INFO] [stderr]   Downloaded snowflake v1.3.0
[INFO] [stderr]   Downloaded termion v1.5.3
[INFO] [stderr]   Downloaded sha2 v0.8.0
[INFO] [stderr]   Downloaded term v0.5.2
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.3.11
[INFO] [stderr]   Downloaded parity-wasm v0.41.0
[INFO] [stderr]   Downloaded pathfinding v1.1.12
[INFO] [stderr]   Downloaded regex-syntax v0.6.10
[INFO] [stderr]   Downloaded backtrace-sys v0.1.29
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.34
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.2.34
[INFO] [stderr]   Downloaded wasmi-validation v0.3.0
[INFO] [stderr]   Downloaded anyhow v1.0.28
[INFO] [stderr]   Downloaded string_cache v0.7.3
[INFO] [stderr]   Downloaded memory_units v0.3.0
[INFO] [stderr]   Downloaded nanoid v0.2.0
[INFO] [stderr]   Downloaded wasmprinter v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 2f713a33670d5c97d5c784364a35b61ce85f58bfdbeccefbb1de7fba8be96999
[INFO] running `Command { std: "docker" "start" "-a" "2f713a33670d5c97d5c784364a35b61ce85f58bfdbeccefbb1de7fba8be96999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f713a33670d5c97d5c784364a35b61ce85f58bfdbeccefbb1de7fba8be96999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f713a33670d5c97d5c784364a35b61ce85f58bfdbeccefbb1de7fba8be96999", kill_on_drop: false }`
[INFO] [stdout] 2f713a33670d5c97d5c784364a35b61ce85f58bfdbeccefbb1de7fba8be96999
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 40a6bd81babe4e61dfe14bc6bb686c8c0bbf00b63cbcca5e7b4b52e52a58bab2
[INFO] running `Command { std: "docker" "start" "-a" "40a6bd81babe4e61dfe14bc6bb686c8c0bbf00b63cbcca5e7b4b52e52a58bab2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.34
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling opaque-debug v0.2.2
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling strsim v0.9.2
[INFO] [stderr]    Compiling wasm-bindgen v0.2.34
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]    Compiling diff v0.1.11
[INFO] [stderr]    Compiling lalrpop-util v0.17.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking wasmparser v0.51.4
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]     Checking regex-syntax v0.6.10
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling block-padding v0.1.4
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling ena v0.13.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.15.39/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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=d70598ad8ea36f1d -C extra-filename=-d70598ad8ea36f1d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-5183daaff8fc0d44.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-2f4820e212f3df65.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-123b1a1a47f71896.rmeta --cap-lints allow --cfg syn_can_match_trailing_dollar --cfg syn_can_use_thread_id --cfg syn_can_use_associated_constants --cfg syn_can_call_macro_by_path --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" "40a6bd81babe4e61dfe14bc6bb686c8c0bbf00b63cbcca5e7b4b52e52a58bab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40a6bd81babe4e61dfe14bc6bb686c8c0bbf00b63cbcca5e7b4b52e52a58bab2", kill_on_drop: false }`
[INFO] [stdout] 40a6bd81babe4e61dfe14bc6bb686c8c0bbf00b63cbcca5e7b4b52e52a58bab2