[INFO] cloning repository https://github.com/fly8899/flashcards
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fly8899/flashcards" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffly8899%2Fflashcards", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffly8899%2Fflashcards'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e0f59a8907f41d2803385593d2713f9d743a296
[INFO] checking fly8899/flashcards against master#84e729a59f216cc64755788a470f165429a731f4 for pr-123737-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffly8899%2Fflashcards" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fly8899/flashcards on toolchain 84e729a59f216cc64755788a470f165429a731f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+84e729a59f216cc64755788a470f165429a731f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fly8899/flashcards
[INFO] finished tweaking git repo https://github.com/fly8899/flashcards
[INFO] tweaked toml for git repo https://github.com/fly8899/flashcards written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/fly8899/flashcards 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" "+84e729a59f216cc64755788a470f165429a731f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded urlencoding v2.1.3
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+84e729a59f216cc64755788a470f165429a731f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2187cdc55d5aecd4ce55598dc2e84ef5f8c07d9de710142691fac8cfc0445320
[INFO] running `Command { std: "docker" "start" "-a" "2187cdc55d5aecd4ce55598dc2e84ef5f8c07d9de710142691fac8cfc0445320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2187cdc55d5aecd4ce55598dc2e84ef5f8c07d9de710142691fac8cfc0445320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2187cdc55d5aecd4ce55598dc2e84ef5f8c07d9de710142691fac8cfc0445320", kill_on_drop: false }`
[INFO] [stdout] 2187cdc55d5aecd4ce55598dc2e84ef5f8c07d9de710142691fac8cfc0445320
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+84e729a59f216cc64755788a470f165429a731f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c468fa53a1ee4036efb849e0ed4d28e2853b7a8bd5ed63f0df29732a2797374
[INFO] running `Command { std: "docker" "start" "-a" "6c468fa53a1ee4036efb849e0ed4d28e2853b7a8bd5ed63f0df29732a2797374", kill_on_drop: false }`
[INFO] [stderr]     Checking bitflags v2.4.2
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustix v0.38.31
[INFO] [stderr]     Checking concurrent-queue v2.4.0
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]     Checking wayland-sys v0.31.1
[INFO] [stderr]    Compiling smallvec v1.13.1
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling wayland-scanner v0.31.1
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling bytemuck v1.14.3
[INFO] [stderr]    Compiling openssl-sys v0.9.101
[INFO] [stderr]    Compiling roxmltree v0.19.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.15
[INFO] [stderr]     Checking event-listener v4.0.3
[INFO] [stderr]    Compiling ttf-parser v0.20.0
[INFO] [stderr]    Compiling miniz_oxide v0.7.2
[INFO] [stderr]     Checking event-listener v5.2.0
[INFO] [stderr]     Checking event-listener-strategy v0.4.0
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking event-listener-strategy v0.5.0
[INFO] [stderr]    Compiling fontconfig-parser v0.5.6
[INFO] [stderr]     Checking async-lock v3.3.0
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking async-channel v2.2.0
[INFO] [stderr]    Compiling flate2 v1.0.28
[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling tiny-skia-path v0.11.4
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]    Compiling flume v0.11.0
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling memmap2 v0.9.4
[INFO] [stderr]    Compiling idna v0.5.0
[INFO] [stderr]     Checking polling v2.8.0
[INFO] [stderr]     Checking unicode-script v0.5.6
[INFO] [stderr]     Checking unicode-properties v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]     Checking async-io v1.13.0
[INFO] [stderr]     Checking svgtypes v0.13.0
[INFO] [stderr]     Checking async-executor v1.8.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking euclid v0.22.9
[INFO] [stderr]    Compiling url v2.5.0
[INFO] [stderr]     Checking fontdb v0.16.2
[INFO] [stderr]    Compiling fdeflate v0.3.4
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling field-offset v0.3.6
[INFO] [stderr]    Compiling libloading v0.8.3
[INFO] [stderr]    Compiling usvg-tree v0.38.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]    Compiling regex v1.10.3
[INFO] [stderr]    Compiling indexmap v2.2.5
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling png v0.17.13
[INFO] [stderr]    Compiling simplecss v0.2.1
[INFO] [stderr]    Compiling weezl v0.1.8
[INFO] [stderr]    Compiling rustybuzz v0.12.1
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]     Checking lyon_geom v1.0.5
[INFO] [stderr]    Compiling toml_edit v0.21.1
[INFO] [stderr]    Compiling usvg-parser v0.38.0
[INFO] [stderr]     Checking x11-dl v2.21.0
[INFO] [stderr]    Compiling libsqlite3-sys v0.27.0
[INFO] [stderr]    Compiling half v2.4.0
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling gif v0.13.1
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling tiny-skia v0.11.4
[INFO] [stderr]    Compiling exr v1.72.0
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]     Checking lyon_path v1.0.4
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]    Compiling mio v0.8.11
[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/84e729a59f216cc64755788a470f165429a731f4/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/syn-2.0.52/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="quote"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' -C metadata=8b3178c80ec746b4 -C extra-filename=-8b3178c80ec746b4 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-6b6a52a206917441.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-e3e2745b1c1d8733.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" "6c468fa53a1ee4036efb849e0ed4d28e2853b7a8bd5ed63f0df29732a2797374", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c468fa53a1ee4036efb849e0ed4d28e2853b7a8bd5ed63f0df29732a2797374", kill_on_drop: false }`
[INFO] [stdout] 6c468fa53a1ee4036efb849e0ed4d28e2853b7a8bd5ed63f0df29732a2797374