[INFO] cloning repository https://github.com/torrust/torrust-tracker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/torrust/torrust-tracker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorrust%2Ftorrust-tracker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorrust%2Ftorrust-tracker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 898215919a324b56e9f80bc8508d2368433d045c
[INFO] documenting torrust/torrust-tracker against nightly for scrape-examples
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorrust%2Ftorrust-tracker" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/torrust/torrust-tracker on toolchain nightly
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/torrust/torrust-tracker
[INFO] finished tweaking git repo https://github.com/torrust/torrust-tracker
[INFO] tweaked toml for git repo https://github.com/torrust/torrust-tracker written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/torrust/torrust-tracker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded frunk_proc_macro_helpers v0.1.0
[INFO] [stderr]   Downloaded r2d2_mysql v21.0.0
[INFO] [stderr]   Downloaded frunk_derives v0.4.0
[INFO] [stderr]   Downloaded frunk_proc_macros v0.1.0
[INFO] [stderr]   Downloaded frunk_core v0.4.0
[INFO] [stderr]   Downloaded aquatic_udp_protocol v0.2.0
[INFO] [stderr]   Downloaded frunk_proc_macros_impl v0.1.0
[INFO] [stderr]   Downloaded frunk v0.4.0
[INFO] [stderr]   Downloaded r2d2_sqlite v0.21.0
[INFO] [stderr]   Downloaded serde_bencode v0.2.3
[INFO] [stderr]   Downloaded mysql_common v0.27.5
[INFO] [stderr]   Downloaded mysql v21.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 940c1e815234b117adee4aae1476ae37ebc7fdb7bbf145a06594ba2199d39831
[INFO] running `Command { std: "docker" "start" "-a" "940c1e815234b117adee4aae1476ae37ebc7fdb7bbf145a06594ba2199d39831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "940c1e815234b117adee4aae1476ae37ebc7fdb7bbf145a06594ba2199d39831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "940c1e815234b117adee4aae1476ae37ebc7fdb7bbf145a06594ba2199d39831", kill_on_drop: false }`
[INFO] [stdout] 940c1e815234b117adee4aae1476ae37ebc7fdb7bbf145a06594ba2199d39831
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed423f737931ce38e8e7879b653aff9f85e094581ff07d1613087efb9797ae2f
[INFO] running `Command { std: "docker" "start" "-a" "ed423f737931ce38e8e7879b653aff9f85e094581ff07d1613087efb9797ae2f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.136
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling openssl-src v111.22.0+1.1.1q
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling clang-sys v1.4.0
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling frunk_core v0.4.0
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling openssl-sys v0.9.77
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking block-buffer v0.10.3
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling bindgen v0.58.1
[INFO] [stderr]    Compiling serde_json v1.0.87
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking digest v0.10.5
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling libz-sys v1.1.8
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling const_fn v0.4.9
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling subprocess v0.2.9
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling cmake v0.1.48
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling openssl v0.10.42
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling rust_decimal v1.26.1
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]    Compiling frunk_proc_macro_helpers v0.1.0
[INFO] [stderr]    Compiling darling_core v0.14.1
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking wyz v0.4.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling libsqlite3-sys v0.25.1
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling io-enum v1.0.1
[INFO] [stderr]    Compiling rustls v0.20.7
[INFO] [stderr]     Checking sha1_smol v1.0.0
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]     Checking iana-time-zone v0.1.51
[INFO] [stderr]     Checking funty v1.2.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking sha1 v0.6.1
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking lexical v5.2.2
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.6
[INFO] [stderr]     Checking bitvec v0.22.3
[INFO] [stderr]    Compiling derive_utils v0.11.2
[INFO] [stderr]     Checking sha-1 v0.10.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]    Compiling async-trait v0.1.58
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking dlv-list v0.3.0
[INFO] [stderr]    Compiling mysql v21.0.2
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking saturating v0.1.0
[INFO] [stderr]     Checking ordered-multimap v0.4.3
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking lru v0.6.6
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking pem v0.8.3
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking r2d2 v0.8.10
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]     Checking sha1 v0.10.5
[INFO] [stderr]     Checking hashlink v0.8.1
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.9
[INFO] [stderr]     Checking multipart v0.18.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking headers v0.3.8
[INFO] [stderr]     Checking rust-ini v0.18.0
[INFO] [stderr]     Checking rustls-pemfile v0.2.1
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking pathdiff v0.2.1
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking uuid v1.2.1
[INFO] [stderr]     Checking fern v0.6.1
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking binascii v0.1.4
[INFO] [stderr]     Checking aquatic_udp_protocol v0.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.37
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling futures-macro v0.3.25
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling frunk_proc_macros_impl v0.1.0
[INFO] [stderr]    Compiling frunk_derives v0.4.0
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]    Compiling darling_macro v0.14.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.12
[INFO] [stderr] error: could not compile `bindgen`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name bindgen --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bindgen-0.58.1/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=1 --cfg 'feature="clap"' --cfg 'feature="default"' --cfg 'feature="env_logger"' --cfg 'feature="log"' --cfg 'feature="logging"' --cfg 'feature="runtime"' --cfg 'feature="which"' --cfg 'feature="which-rustfmt"' -C metadata=6974e8555fda749a -C extra-filename=-6974e8555fda749a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-2696fa06133c4ee4.rmeta --extern cexpr=/opt/rustwide/target/debug/deps/libcexpr-9808813847563232.rmeta --extern clang_sys=/opt/rustwide/target/debug/deps/libclang_sys-302c8e55638e7912.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-2237994d0eee13d7.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-3d71ef82a9bee434.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-826ceb1ee1855daa.rmeta --extern lazycell=/opt/rustwide/target/debug/deps/liblazycell-d64d5ba97f1aa79f.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-73d6acf3451dd3da.rmeta --extern peeking_take_while=/opt/rustwide/target/debug/deps/libpeeking_take_while-40e4cf834f2ca665.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-ca7b10c7d5bae693.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-ed76da343c266156.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-abb8a963061aea7e.rmeta --extern rustc_hash=/opt/rustwide/target/debug/deps/librustc_hash-ed1adce0ad24be4b.rmeta --extern shlex=/opt/rustwide/target/debug/deps/libshlex-d4e6cdc120e736a8.rmeta --extern which=/opt/rustwide/target/debug/deps/libwhich-e69b526db83a56b3.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ed423f737931ce38e8e7879b653aff9f85e094581ff07d1613087efb9797ae2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed423f737931ce38e8e7879b653aff9f85e094581ff07d1613087efb9797ae2f", kill_on_drop: false }`
[INFO] [stdout] ed423f737931ce38e8e7879b653aff9f85e094581ff07d1613087efb9797ae2f