[INFO] fetching crate mdbook-pikchr 0.1.5...
[INFO] testing mdbook-pikchr-0.1.5 against master#159ba8a92c9e2fa4121f106176309521f4af87e9+rustflags=-Copt-level=3 for pr-107051
[INFO] extracting crate mdbook-pikchr 0.1.5 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate mdbook-pikchr 0.1.5 on toolchain 159ba8a92c9e2fa4121f106176309521f4af87e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdbook-pikchr 0.1.5
[INFO] finished tweaking crates.io crate mdbook-pikchr 0.1.5
[INFO] tweaked toml for crates.io crate mdbook-pikchr 0.1.5 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate mdbook-pikchr 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded handlebars v4.1.2
[INFO] [stderr]   Downloaded elasticlunr-rs v3.0.0
[INFO] [stderr]   Downloaded ammonia v3.1.2
[INFO] [stderr]   Downloaded gitignore v1.0.7
[INFO] [stderr]   Downloaded clap_complete v3.0.4
[INFO] [stderr]   Downloaded libc v0.2.100
[INFO] [stderr]   Downloaded siphasher v0.3.6
[INFO] [stderr]   Downloaded pulldown-cmark-to-cmark v10.0.4
[INFO] [stderr]   Downloaded xml5ever v0.16.1
[INFO] [stderr]   Downloaded sha-1 v0.9.7
[INFO] [stderr]   Downloaded markup5ever_rcdom v0.1.0
[INFO] [stderr]   Downloaded tendril v0.4.2
[INFO] [stderr]   Downloaded serde_derive v1.0.129
[INFO] [stderr]   Downloaded warp v0.3.2
[INFO] [stderr]   Downloaded futures-macro v0.3.16
[INFO] [stderr]   Downloaded serde v1.0.129
[INFO] [stderr]   Downloaded clap v3.0.10
[INFO] [stderr]   Downloaded headers v0.3.4
[INFO] [stderr]   Downloaded mdbook v0.4.22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:7c93e6f9a94679f34221d1005849d4c83862f85b14a264fa0883942f4d043a66" "/opt/rustwide/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61c57272b371287b817b87e62747d66acd1e017247b445eff7ffb3a087122a69
[INFO] running `Command { std: "docker" "start" "-a" "61c57272b371287b817b87e62747d66acd1e017247b445eff7ffb3a087122a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61c57272b371287b817b87e62747d66acd1e017247b445eff7ffb3a087122a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61c57272b371287b817b87e62747d66acd1e017247b445eff7ffb3a087122a69", kill_on_drop: false }`
[INFO] [stdout] 61c57272b371287b817b87e62747d66acd1e017247b445eff7ffb3a087122a69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=forbid -Copt-level=3" "-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@sha256:7c93e6f9a94679f34221d1005849d4c83862f85b14a264fa0883942f4d043a66" "/opt/rustwide/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 298a4fac7d06c37e3b60f808fbd7810c2424e3f9421038dfd1c135f05e3a09b9
[INFO] running `Command { std: "docker" "start" "-a" "298a4fac7d06c37e3b60f808fbd7810c2424e3f9421038dfd1c135f05e3a09b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling siphasher v0.3.6
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling tinyvec v1.3.1
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling http v0.2.4
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling futf v0.1.4
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.6
[INFO] [stderr]    Compiling tendril v0.4.2
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling cpufeatures v0.1.5
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling tracing-core v0.1.19
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling sha-1 v0.9.7
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling pulldown-cmark v0.9.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling http-body v0.4.3
[INFO] [stderr]    Compiling headers-core v0.2.0
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling socket2 v0.4.1
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling httpdate v1.0.1
[INFO] [stderr]    Compiling textwrap v0.14.2
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling headers v0.3.4
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling clap v3.0.10
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling markup5ever v0.10.1
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling quick-error v2.0.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling gitignore v1.0.7
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling clap_complete v3.0.4
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling opener v0.5.0
[INFO] [stderr]    Compiling shlex v1.0.0
[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-1.0.75/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=099ddad8bf681ae3 -C extra-filename=-099ddad8bf681ae3 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-2b187afb25f696e1.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-1b89975272fbbc51.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-3c8a88541efd8c80.rmeta --cap-lints allow --cap-lints=forbid -Copt-level=3` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "298a4fac7d06c37e3b60f808fbd7810c2424e3f9421038dfd1c135f05e3a09b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "298a4fac7d06c37e3b60f808fbd7810c2424e3f9421038dfd1c135f05e3a09b9", kill_on_drop: false }`
[INFO] [stdout] 298a4fac7d06c37e3b60f808fbd7810c2424e3f9421038dfd1c135f05e3a09b9