[INFO] cloning repository https://github.com/40tude/rust_flashcards
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/40tude/rust_flashcards" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F40tude%2Frust_flashcards", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F40tude%2Frust_flashcards'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b5f916cf6151359285c4abfd1d66bbda7593e959
[INFO] checking 40tude/rust_flashcards against try#595142ec72045c7f2fab2923de8e59995a52e6e7 for pr-151830
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F40tude%2Frust_flashcards" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/40tude/rust_flashcards
[INFO] finished tweaking git repo https://github.com/40tude/rust_flashcards
[INFO] tweaked toml for git repo https://github.com/40tude/rust_flashcards written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/40tude/rust_flashcards on toolchain 595142ec72045c7f2fab2923de8e59995a52e6e7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+595142ec72045c7f2fab2923de8e59995a52e6e7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/40tude/rust_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" "+595142ec72045c7f2fab2923de8e59995a52e6e7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+595142ec72045c7f2fab2923de8e59995a52e6e7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f61b9302241ed0161658925b77e6a7e86cc5724895dedc1b3fa4c62cccbd3369
[INFO] running `Command { std: "docker" "start" "-a" "f61b9302241ed0161658925b77e6a7e86cc5724895dedc1b3fa4c62cccbd3369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f61b9302241ed0161658925b77e6a7e86cc5724895dedc1b3fa4c62cccbd3369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f61b9302241ed0161658925b77e6a7e86cc5724895dedc1b3fa4c62cccbd3369", kill_on_drop: false }`
[INFO] [stdout] f61b9302241ed0161658925b77e6a7e86cc5724895dedc1b3fa4c62cccbd3369
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+595142ec72045c7f2fab2923de8e59995a52e6e7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b06a61bd99b5df696e4062724149d086da1be1c7c07356ff00f99309a0739f9
[INFO] running `Command { std: "docker" "start" "-a" "3b06a61bd99b5df696e4062724149d086da1be1c7c07356ff00f99309a0739f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking memchr v2.7.6
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking bytes v1.11.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking slab v0.4.11
[INFO] [stderr]     Checking log v0.4.28
[INFO] [stderr]    Compiling zerocopy v0.8.30
[INFO] [stderr]     Checking tracing-core v0.1.35
[INFO] [stderr]     Checking stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling find-msvc-tools v0.1.5
[INFO] [stderr]     Checking tower-layer v0.3.3
[INFO] [stderr]    Compiling time-core v0.1.6
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]     Checking bitflags v2.10.0
[INFO] [stderr]    Compiling unicase v2.8.1
[INFO] [stderr]    Compiling num-conv v0.1.0
[INFO] [stderr]    Compiling cc v1.2.47
[INFO] [stderr]     Checking sync_wrapper v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling time-macros v0.2.24
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]     Checking litemap v0.8.1
[INFO] [stderr]     Checking writeable v0.6.2
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling cookie v0.18.1
[INFO] [stderr]    Compiling icu_normalizer_data v2.1.1
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]     Checking http v1.4.0
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling icu_properties_data v2.1.2
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]     Checking form_urlencoded v1.2.2
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]     Checking foldhash v0.1.5
[INFO] [stderr]    Compiling mime v0.3.17
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]     Checking utf8parse v0.2.2
[INFO] [stderr]     Checking anstyle-parse v0.2.7
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]     Checking hashbrown v0.15.5
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.7
[INFO] [stderr]     Checking socket2 v0.6.1
[INFO] [stderr]     Checking mio v1.1.0
[INFO] [stderr]     Checking http-body-util v0.1.3
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking anstyle-query v1.1.5
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.2
[INFO] [stderr]     Checking anstyle v1.0.13
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]     Checking colorchoice v1.0.4
[INFO] [stderr]     Checking hashbrown v0.16.1
[INFO] [stderr]    Compiling winnow v0.7.14
[INFO] [stderr]     Checking adler2 v2.0.1
[INFO] [stderr]    Compiling onig_sys v69.9.1
[INFO] [stderr]    Compiling libsqlite3-sys v0.35.0
[INFO] [stderr]     Checking anstream v0.6.21
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]     Checking humansize v2.1.3
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]     Checking hashlink v0.10.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking quick-xml v0.38.4
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking clap_lex v0.7.6
[INFO] [stderr]     Checking indexmap v2.12.1
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.9
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking unicode-width v0.2.2
[INFO] [stderr]     Checking fallible-iterator v0.3.0
[INFO] [stderr]     Checking linux-raw-sys v0.11.0
[INFO] [stderr]     Checking matchit v0.7.3
[INFO] [stderr]     Checking askama_escape v0.10.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking strsim v0.11.1
[INFO] [stderr]    Compiling pulldown-cmark v0.13.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking clap_builder v4.5.53
[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/595142ec72045c7f2fab2923de8e59995a52e6e7/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.111/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="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=a4046ea6e9f31653 -C extra-filename=-e169ac79dad5a9cf --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-43e32a25692bf44a.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-01cdf4ac6a2aaf5b.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-9533002ac35f5809.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" "3b06a61bd99b5df696e4062724149d086da1be1c7c07356ff00f99309a0739f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b06a61bd99b5df696e4062724149d086da1be1c7c07356ff00f99309a0739f9", kill_on_drop: false }`
[INFO] [stdout] 3b06a61bd99b5df696e4062724149d086da1be1c7c07356ff00f99309a0739f9