[INFO] fetching crate md2pdf-mdbook 0.0.1...
[INFO] checking md2pdf-mdbook-0.0.1 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate md2pdf-mdbook 0.0.1 into /workspace/builds/worker-86/source
[INFO] validating manifest of crates.io crate md2pdf-mdbook 0.0.1 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate md2pdf-mdbook 0.0.1
[INFO] finished tweaking crates.io crate md2pdf-mdbook 0.0.1
[INFO] tweaked toml for crates.io crate md2pdf-mdbook 0.0.1 written to /workspace/builds/worker-86/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e325cc1ede8971ef70f109a2c7ab6acb953a014e7c15b104807867fbbdcb121
[INFO] running `Command { std: "docker" "start" "-a" "9e325cc1ede8971ef70f109a2c7ab6acb953a014e7c15b104807867fbbdcb121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e325cc1ede8971ef70f109a2c7ab6acb953a014e7c15b104807867fbbdcb121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e325cc1ede8971ef70f109a2c7ab6acb953a014e7c15b104807867fbbdcb121", kill_on_drop: false }`
[INFO] [stdout] 9e325cc1ede8971ef70f109a2c7ab6acb953a014e7c15b104807867fbbdcb121
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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" "-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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8a545810f2b181f40a77adb7e86167d59d9413b90262f3b53e1b1d502ea457e
[INFO] running `Command { std: "docker" "start" "-a" "b8a545810f2b181f40a77adb7e86167d59d9413b90262f3b53e1b1d502ea457e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling serde v1.0.128
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]     Checking unicode-bidi v0.3.6
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking rustc-demangle v0.1.20
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling cbindgen v0.15.0
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling cpufeatures v0.1.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling pulldown-cmark v0.5.3
[INFO] [stderr]     Checking utf8-width v0.1.5
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]     Checking tinyvec v1.3.1
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]     Checking tectonic_xdv v0.1.12
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking crc32fast v1.2.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking md-5 v0.9.1
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking sha2 v0.9.5
[INFO] [stderr]     Checking byte-unit v4.0.12
[INFO] [stderr]     Checking app_dirs2 v2.3.2
[INFO] [stderr]    Compiling tectonic_cfg_support v0.1.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]    Compiling openssl-sys v0.9.66
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]     Checking object v0.26.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling hyper v0.12.36
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.25/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=c25dc19d7487cdf7 -C extra-filename=-c25dc19d7487cdf7 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (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" "b8a545810f2b181f40a77adb7e86167d59d9413b90262f3b53e1b1d502ea457e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8a545810f2b181f40a77adb7e86167d59d9413b90262f3b53e1b1d502ea457e", kill_on_drop: false }`
[INFO] [stdout] b8a545810f2b181f40a77adb7e86167d59d9413b90262f3b53e1b1d502ea457e