[INFO] cloning repository https://github.com/torrust/torrust-index-backend
[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-index-backend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorrust%2Ftorrust-index-backend", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorrust%2Ftorrust-index-backend'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b329ff885684b41745b52e1816a4eccf3095fd9
[INFO] checking torrust/torrust-index-backend against master#7bdae134cba57426d3c56b5de737a351762445e1 for pr-123794
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorrust%2Ftorrust-index-backend" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/torrust/torrust-index-backend on toolchain 7bdae134cba57426d3c56b5de737a351762445e1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7bdae134cba57426d3c56b5de737a351762445e1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/torrust/torrust-index-backend
[INFO] finished tweaking git repo https://github.com/torrust/torrust-index-backend
[INFO] tweaked toml for git repo https://github.com/torrust/torrust-index-backend written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/torrust/torrust-index-backend 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" "+7bdae134cba57426d3c56b5de737a351762445e1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] [stderr]   Downloaded syn v2.0.57
[INFO] [stderr]   Downloaded quoted_printable v0.5.0
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[INFO] [stderr]   Downloaded rctree v0.4.0
[INFO] [stderr]   Downloaded unicode-bidi-mirroring v0.1.0
[INFO] [stderr]   Downloaded unicode-vo v0.1.0
[INFO] [stderr]   Downloaded zstd v0.13.1
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7bdae134cba57426d3c56b5de737a351762445e1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1bcf5079da15bae464db240918aeec029010e55516a0238332fb84099591b30
[INFO] running `Command { std: "docker" "start" "-a" "a1bcf5079da15bae464db240918aeec029010e55516a0238332fb84099591b30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1bcf5079da15bae464db240918aeec029010e55516a0238332fb84099591b30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1bcf5079da15bae464db240918aeec029010e55516a0238332fb84099591b30", kill_on_drop: false }`
[INFO] [stdout] a1bcf5079da15bae464db240918aeec029010e55516a0238332fb84099591b30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7bdae134cba57426d3c56b5de737a351762445e1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b85be7cacef62df99cc8b44a405960b5320d910a698cf39285a393944973cdb0
[INFO] running `Command { std: "docker" "start" "-a" "b85be7cacef62df99cc8b44a405960b5320d910a698cf39285a393944973cdb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
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[INFO] [stderr]    Compiling pkg-config v0.3.30
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[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
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[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling syn v2.0.57
[INFO] [stderr]    Compiling zerocopy v0.7.32
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[INFO] [stderr]    Compiling zstd-sys v2.0.10+zstd.1.5.6
[INFO] [stderr]    Compiling unicase v2.7.0
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[INFO] [stderr]     Checking tower-layer v0.3.2
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[INFO] [stderr]    Compiling openssl-probe v0.1.5
[INFO] [stderr]    Compiling unicode_categories v0.1.1
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling crossbeam-queue v0.3.11
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]    Compiling crc v3.0.1
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[INFO] [stderr]    Compiling pkcs8 v0.10.2
[INFO] [stderr]    Compiling num-iter v0.1.44
[INFO] [stderr]    Compiling futures-intrusive v0.5.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling hashlink v0.8.4
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling atoi v2.0.0
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling event-listener v2.5.3
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]    Compiling async-trait v0.1.79
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]     Checking rustls-pki-types v1.4.1
[INFO] [stderr]    Compiling unicode-general-category v0.4.0
[INFO] [stderr]    Compiling pkcs1 v0.7.5
[INFO] [stderr]    Compiling const-random-macro v0.1.16
[INFO] [stderr]    Compiling signature v2.2.0
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling psm v0.1.21
[INFO] [stderr]     Checking http-body-util v0.1.1
[INFO] [stderr]     Checking ttf-parser v0.12.3
[INFO] [stderr]    Compiling linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling finl_unicode v1.2.0
[INFO] [stderr]    Compiling zstd-safe v7.1.0
[INFO] [stderr]    Compiling flume v0.11.0
[INFO] [stderr]    Compiling stringprep v0.1.4
[INFO] [stderr]     Checking const-random v0.1.18
[INFO] [stderr]    Compiling hkdf v0.12.4
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling rsa v0.9.6
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/7bdae134cba57426d3c56b5de737a351762445e1/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/syn-2.0.57/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 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit-mut"' -C metadata=fdd3fccf5ec3576b -C extra-filename=-fdd3fccf5ec3576b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-c0a7e744780d4271.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-cfd72e5a145dea92.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-7b828347d8713ecd.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" "b85be7cacef62df99cc8b44a405960b5320d910a698cf39285a393944973cdb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b85be7cacef62df99cc8b44a405960b5320d910a698cf39285a393944973cdb0", kill_on_drop: false }`
[INFO] [stdout] b85be7cacef62df99cc8b44a405960b5320d910a698cf39285a393944973cdb0