[INFO] cloning repository https://github.com/jvff/tdc-rust-async-presentation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jvff/tdc-rust-async-presentation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvff%2Ftdc-rust-async-presentation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvff%2Ftdc-rust-async-presentation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b12fa84c4712ae4bbb9359fcf730e9573fed1139
[INFO] documenting jvff/tdc-rust-async-presentation against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvff%2Ftdc-rust-async-presentation" "/workspace/builds/worker-98/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-98/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jvff/tdc-rust-async-presentation on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-98/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/jvff/tdc-rust-async-presentation
[INFO] finished tweaking git repo https://github.com/jvff/tdc-rust-async-presentation
[INFO] tweaked toml for git repo https://github.com/jvff/tdc-rust-async-presentation written to /workspace/builds/worker-98/source/Cargo.toml
[INFO] crate git repo https://github.com/jvff/tdc-rust-async-presentation already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/jvff/presentrs`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v0.4.8
[INFO] [stderr]   Downloaded actix-web v0.6.15
[INFO] [stderr]   Downloaded stdweb v0.4.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34144484f5075e6061da5a306a82ebf074072c56958691db072abd3486c3dabc
[INFO] running `Command { std: "docker" "start" "-a" "34144484f5075e6061da5a306a82ebf074072c56958691db072abd3486c3dabc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34144484f5075e6061da5a306a82ebf074072c56958691db072abd3486c3dabc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34144484f5075e6061da5a306a82ebf074072c56958691db072abd3486c3dabc", kill_on_drop: false }`
[INFO] [stdout] 34144484f5075e6061da5a306a82ebf074072c56958691db072abd3486c3dabc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 964cccf5ebcbb3e78dd2f0bc1b2922872c7caffa02c78e4c2ae884bba1e1fc9d
[INFO] running `Command { std: "docker" "start" "-a" "964cccf5ebcbb3e78dd2f0bc1b2922872c7caffa02c78e4c2ae884bba1e1fc9d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]    Compiling lazy_static v1.0.2
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]    Compiling itoa v0.4.2
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling futures v0.1.23
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling slab v0.4.0
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling lazycell v0.6.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]    Compiling same-file v1.0.2
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling bytecount v0.3.1
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling matches v0.1.7
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling httparse v1.3.2
[INFO] [stderr]    Compiling stdweb v0.4.8
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling scoped-tls v0.1.2
[INFO] [stderr]    Compiling smallvec v0.6.2
[INFO] [stderr]    Compiling stable_deref_trait v1.1.0
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]    Compiling ucd-util v0.1.1
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling linked-hash-map v0.4.2
[INFO] [stderr]    Compiling utf-8 v0.7.2
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling untrusted v0.5.1
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling indexmap v1.0.1
[INFO] [stderr]    Compiling string v0.1.1
[INFO] [stderr]    Compiling discard v1.0.3
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling http-range v0.1.1
[INFO] [stderr]    Compiling anymap v0.12.1
[INFO] [stderr]    Compiling sha1 v0.6.0
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling unicode_categories v0.1.1
[INFO] [stderr]    Compiling entities v1.0.1
[INFO] [stderr]    Compiling typed-arena v1.4.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.8
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking lru-cache v0.1.1
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling hostname v0.1.5
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking base64 v0.9.2
[INFO] [stderr]    Compiling pest_derive v1.0.7
[INFO] [stderr]     Checking tendril v0.4.0
[INFO] [stderr]    Compiling tokio-executor v0.1.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling walkdir v2.1.4
[INFO] [stderr]    Compiling aho-corasick v0.6.6
[INFO] [stderr]    Compiling twoway v0.1.8
[INFO] [stderr]    Compiling regex-syntax v0.6.2
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]    Compiling actix_derive v0.2.0
[INFO] [stderr]    Compiling actix-web v0.6.15
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling resolv-conf v0.6.1
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling bytes v0.4.8
[INFO] [stderr]    Compiling mio v0.6.15
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling uuid v0.6.5
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling tokio-timer v0.2.4
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.1
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.3
[INFO] [stderr]    Compiling tokio-io v0.1.7
[INFO] [stderr]    Compiling http v0.1.7
[INFO] [stderr]    Compiling parking_lot v0.5.5
[INFO] [stderr]    Compiling mio-uds v0.6.6
[INFO] [stderr]    Compiling futf v0.1.4
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.2
[INFO] [stderr]    Compiling tokio-codec v0.1.0
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.12.15/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="derive"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="quote"' -C metadata=34eea7365b30d5bc -C extra-filename=-34eea7365b30d5bc --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-3430b28262095635.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-632bc3a7ebdef937.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-17566c89b81f032a.rmeta --cap-lints allow` (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" "964cccf5ebcbb3e78dd2f0bc1b2922872c7caffa02c78e4c2ae884bba1e1fc9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "964cccf5ebcbb3e78dd2f0bc1b2922872c7caffa02c78e4c2ae884bba1e1fc9d", kill_on_drop: false }`
[INFO] [stdout] 964cccf5ebcbb3e78dd2f0bc1b2922872c7caffa02c78e4c2ae884bba1e1fc9d
