[INFO] cloning repository https://github.com/francisco-perez-sorrosal/mdbook-bib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/francisco-perez-sorrosal/mdbook-bib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrancisco-perez-sorrosal%2Fmdbook-bib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrancisco-perez-sorrosal%2Fmdbook-bib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 05a14c4e64221fac9d53a5e08fb489045d4cceb5
[INFO] testing francisco-perez-sorrosal/mdbook-bib against 1.63.0 for beta-1.64-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrancisco-perez-sorrosal%2Fmdbook-bib" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/francisco-perez-sorrosal/mdbook-bib on toolchain 1.63.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.63.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/francisco-perez-sorrosal/mdbook-bib
[INFO] finished tweaking git repo https://github.com/francisco-perez-sorrosal/mdbook-bib
[INFO] tweaked toml for git repo https://github.com/francisco-perez-sorrosal/mdbook-bib written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/francisco-perez-sorrosal/mdbook-bib already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.63.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.8
[INFO] [stderr]   Downloaded itoa v0.4.7
[INFO] [stderr]   Downloaded rand_hc v0.3.0
[INFO] [stderr]   Downloaded redox_syscall v0.2.4
[INFO] [stderr]   Downloaded rusty-hook v0.11.2
[INFO] [stderr]   Downloaded rand v0.8.2
[INFO] [stderr]   Downloaded indexmap v1.6.1
[INFO] [stderr]   Downloaded hyper-tls v0.5.0
[INFO] [stderr]   Downloaded bytecount v0.6.2
[INFO] [stderr]   Downloaded js-sys v0.3.47
[INFO] [stderr]   Downloaded regex v1.4.3
[INFO] [stderr]   Downloaded once_cell v1.5.2
[INFO] [stderr]   Downloaded byteorder v1.4.2
[INFO] [stderr]   Downloaded serde v1.0.121
[INFO] [stderr]   Downloaded handlebars v3.5.2
[INFO] [stderr]   Downloaded nom-tracable-macros v0.5.2
[INFO] [stderr]   Downloaded nom-tracable v0.5.2
[INFO] [stderr]   Downloaded nom_locate v1.0.0
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.70
[INFO] [stderr]   Downloaded ci_info v0.10.2
[INFO] [stderr]   Downloaded nias v0.5.0
[INFO] [stderr]   Downloaded futures-sink v0.3.12
[INFO] [stderr]   Downloaded futures-task v0.3.12
[INFO] [stderr]   Downloaded anyhow v1.0.38
[INFO] [stderr]   Downloaded http-body v0.4.0
[INFO] [stderr]   Downloaded env_logger v0.8.2
[INFO] [stderr]   Downloaded hyper v0.14.4
[INFO] [stderr]   Downloaded quick-error v2.0.0
[INFO] [stderr]   Downloaded futures-channel v0.3.12
[INFO] [stderr]   Downloaded futures-util v0.3.12
[INFO] [stderr]   Downloaded unicode-normalization v0.1.17
[INFO] [stderr]   Downloaded h2 v0.3.0
[INFO] [stderr]   Downloaded futures-io v0.3.12
[INFO] [stderr]   Downloaded futures-core v0.3.12
[INFO] [stderr]   Downloaded open v1.4.0
[INFO] [stderr]   Downloaded bytecount v0.3.2
[INFO] [stderr]   Downloaded nom_locate v2.1.0
[INFO] [stderr]   Downloaded rand_core v0.6.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.22
[INFO] [stderr]   Downloaded lexical-core v0.7.5
[INFO] [stderr]   Downloaded tracing v0.1.23
[INFO] [stderr]   Downloaded idna v0.2.1
[INFO] [stderr]   Downloaded web-sys v0.3.47
[INFO] [stderr]   Downloaded libc v0.2.82
[INFO] [stderr]   Downloaded encoding_rs v0.8.28
[INFO] [stderr]   Downloaded fsio v0.1.3
[INFO] [stderr]   Downloaded mdbook v0.4.6
[INFO] [stderr]   Downloaded envmnt v0.8.4
[INFO] [stderr]   Downloaded tokio v1.2.0
[INFO] [stderr]   Downloaded bytes v1.0.1
[INFO] [stderr]   Downloaded pin-project-lite v0.2.4
[INFO] [stderr]   Downloaded bumpalo v3.6.0
[INFO] [stderr]   Downloaded wasi v0.10.1+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded tokio-util v0.6.3
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.20
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.70
[INFO] [stderr]   Downloaded syn v1.0.59
[INFO] [stderr]   Downloaded mio v0.7.7
[INFO] [stderr]   Downloaded serde_json v1.0.61
[INFO] [stderr]   Downloaded log v0.4.13
[INFO] [stderr]   Downloaded nom-bibtex v0.3.0
[INFO] [stderr]   Downloaded serde_derive v1.0.121
[INFO] [stderr]   Downloaded thread_local v1.1.1
[INFO] [stderr]   Downloaded pin-project-internal v1.0.5
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.70
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.70
[INFO] [stderr]   Downloaded http v0.2.3
[INFO] [stderr]   Downloaded httparse v1.3.5
[INFO] [stderr]   Downloaded pin-project v1.0.5
[INFO] [stderr]   Downloaded miow v0.3.6
[INFO] [stderr]   Downloaded hermit-abi v0.1.18
[INFO] [stderr]   Downloaded tinyvec v1.1.1
[INFO] [stderr]   Downloaded reqwest v0.11.0
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.70
[INFO] [stderr]   Downloaded rand_chacha v0.3.0
[INFO] [stderr]   Downloaded getrandom v0.2.2
[INFO] [stderr]   Downloaded socket2 v0.3.19
[INFO] [stderr]   Downloaded tokio-native-tls v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+1.63.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83976971f4547e520fad185a1262012a6f030d838ccbcdc2774f34b6d54ae387
[INFO] running `Command { std: "docker" "start" "-a" "83976971f4547e520fad185a1262012a6f030d838ccbcdc2774f34b6d54ae387", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83976971f4547e520fad185a1262012a6f030d838ccbcdc2774f34b6d54ae387", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83976971f4547e520fad185a1262012a6f030d838ccbcdc2774f34b6d54ae387", kill_on_drop: false }`
[INFO] [stdout] 83976971f4547e520fad185a1262012a6f030d838ccbcdc2774f34b6d54ae387
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+1.63.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e0a1a2009dca213ab1fa7f88d344984c2f3f836cd8e996b9e2c63b59ff3b84c
[INFO] running `Command { std: "docker" "start" "-a" "0e0a1a2009dca213ab1fa7f88d344984c2f3f836cd8e996b9e2c63b59ff3b84c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.59
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling pin-project-lite v0.2.4
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.121
[INFO] [stderr]    Compiling serde v1.0.121
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling futures-core v0.3.12
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling lexical-core v0.7.5
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling openssl v0.10.32
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling futures-sink v0.3.12
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling futures-io v0.3.12
[INFO] [stderr]    Compiling httparse v1.3.5
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling bytecount v0.6.2
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]    Compiling bytecount v0.3.2
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling quick-error v2.0.0
[INFO] [stderr]    Compiling open v1.4.0
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling ipnet v2.3.0
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling futures-task v0.3.12
[INFO] [stderr]    Compiling thread_local v1.1.1
[INFO] [stderr]    Compiling futures-channel v0.3.12
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling http v0.2.3
[INFO] [stderr]    Compiling form_urlencoded v1.0.0
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling tinyvec v1.1.1
[INFO] [stderr]    Compiling tracing v0.1.23
[INFO] [stderr]    Compiling futures-util v0.3.12
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling mio v0.7.7
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling unicode-normalization v0.1.17
[INFO] [stderr]    Compiling http-body v0.4.0
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling clap v2.33.3
[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 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.22/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="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=cd95f0c68c691980 -C extra-filename=-cd95f0c68c691980 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0e0a1a2009dca213ab1fa7f88d344984c2f3f836cd8e996b9e2c63b59ff3b84c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e0a1a2009dca213ab1fa7f88d344984c2f3f836cd8e996b9e2c63b59ff3b84c", kill_on_drop: false }`
[INFO] [stdout] 0e0a1a2009dca213ab1fa7f88d344984c2f3f836cd8e996b9e2c63b59ff3b84c