[INFO] fetching crate mdbook-linkcheck 0.7.6...
[INFO] documenting mdbook-linkcheck-0.7.6 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate mdbook-linkcheck 0.7.6 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate mdbook-linkcheck 0.7.6 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-12/source/.cargo/config
[INFO] started tweaking crates.io crate mdbook-linkcheck 0.7.6
[INFO] finished tweaking crates.io crate mdbook-linkcheck 0.7.6
[INFO] tweaked toml for crates.io crate mdbook-linkcheck 0.7.6 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate mdbook-linkcheck 0.7.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb4515591e72de1c5c81461c443104f9c887d86cbbbe0bff787fc66751bf3d56
[INFO] running `Command { std: "docker" "start" "-a" "fb4515591e72de1c5c81461c443104f9c887d86cbbbe0bff787fc66751bf3d56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb4515591e72de1c5c81461c443104f9c887d86cbbbe0bff787fc66751bf3d56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb4515591e72de1c5c81461c443104f9c887d86cbbbe0bff787fc66751bf3d56", kill_on_drop: false }`
[INFO] [stdout] fb4515591e72de1c5c81461c443104f9c887d86cbbbe0bff787fc66751bf3d56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d128ac2e1e284e1fb1a091583dcb980b0ffe57a5dd39ab408815d7a973f207f
[INFO] running `Command { std: "docker" "start" "-a" "4d128ac2e1e284e1fb1a091583dcb980b0ffe57a5dd39ab408815d7a973f207f", kill_on_drop: false }`
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[INFO] [stderr]    Compiling memchr v2.4.1
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[INFO] [stderr]    Compiling futures-channel v0.3.17
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[INFO] [stderr]     Checking matches v0.1.9
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[INFO] [stderr]     Checking httpdate v1.0.1
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[INFO] [stderr]     Checking regex-syntax v0.6.25
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[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking codespan v0.11.1
[INFO] [stderr]     Checking handlebars v4.1.4
[INFO] [stderr]     Checking mdbook v0.4.13
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.6
[INFO] [stderr]     Checking linkcheck v0.4.1
[INFO] [stderr]  Documenting mdbook-linkcheck v0.7.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]    --> src/validate.rs:294:21
[INFO] [stdout]     |
[INFO] [stdout] 294 |     /// As shown in https://github.com/Michael-F-Bryan/mdbook-linkcheck/issues/33
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://github.com/Michael-F-Bryan/mdbook-linkcheck/issues/33>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(rustdoc::bare_urls)]` on by default
[INFO] [stdout]     = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.61s
[INFO] running `Command { std: "docker" "inspect" "4d128ac2e1e284e1fb1a091583dcb980b0ffe57a5dd39ab408815d7a973f207f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d128ac2e1e284e1fb1a091583dcb980b0ffe57a5dd39ab408815d7a973f207f", kill_on_drop: false }`
[INFO] [stdout] 4d128ac2e1e284e1fb1a091583dcb980b0ffe57a5dd39ab408815d7a973f207f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 76c81f579adfcefb8aa62a7572b6480589aa1ef4e2288a765cbb5b778084d31a
[INFO] running `Command { std: "docker" "start" "-a" "76c81f579adfcefb8aa62a7572b6480589aa1ef4e2288a765cbb5b778084d31a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
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[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]     Checking cfg-if v1.0.0
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[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking termcolor v1.1.2
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[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling ucd-trie v0.1.3
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[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling encoding_rs v0.8.29
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]    Compiling serde_json v1.0.69
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking httpdate v1.0.1
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]    Compiling anyhow v1.0.45
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
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[INFO] [stderr]     Checking ipnet v2.3.1
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[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking quick-error v2.0.1
[INFO] [stderr]     Checking base64 v0.13.0
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[INFO] [stderr]     Checking shlex v1.1.0
[INFO] [stderr]     Checking dunce v1.0.2
[INFO] [stderr]     Checking topological-sort v0.1.0
[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,future-incompat --crate-type lib --emit=dep-info,metadata -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=aa7900256607b78b -C extra-filename=-aa7900256607b78b --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" "76c81f579adfcefb8aa62a7572b6480589aa1ef4e2288a765cbb5b778084d31a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76c81f579adfcefb8aa62a7572b6480589aa1ef4e2288a765cbb5b778084d31a", kill_on_drop: false }`
[INFO] [stdout] 76c81f579adfcefb8aa62a7572b6480589aa1ef4e2288a765cbb5b778084d31a