[INFO] fetching crate srgn 0.7.0...
[INFO] checking srgn-0.7.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate srgn 0.7.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate srgn 0.7.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate srgn 0.7.0
[INFO] finished tweaking crates.io crate srgn 0.7.0
[INFO] tweaked toml for crates.io crate srgn 0.7.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate srgn 0.7.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_regex v0.16.0
[INFO] [stderr]   Downloaded enum-iterator v1.4.1
[INFO] [stderr]   Downloaded cached_proc_macro_types v0.1.0
[INFO] [stderr]   Downloaded enum-iterator-derive v1.2.1
[INFO] [stderr]   Downloaded test-log v0.2.12
[INFO] [stderr]   Downloaded thiserror v1.0.47
[INFO] [stderr]   Downloaded assert_cmd v2.0.12
[INFO] [stderr]   Downloaded anstyle v1.0.2
[INFO] [stderr]   Downloaded clap_derive v4.4.0
[INFO] [stderr]   Downloaded clap v4.4.0
[INFO] [stderr]   Downloaded clap_builder v4.4.0
[INFO] [stderr]   Downloaded object v0.32.0
[INFO] [stderr]   Downloaded insta v1.31.0
[INFO] [stderr]   Downloaded tree-sitter-typescript v0.20.2
[INFO] [stderr]   Downloaded syntect v5.1.0
[INFO] [stderr]   Downloaded tree-sitter-c-sharp v0.20.0
[INFO] [stderr]   Downloaded rustix v0.37.26
[INFO] [stderr]   Downloaded decompound v0.3.0
[INFO] [stderr]   Downloaded unicode_titlecase v2.2.1
[INFO] [stderr]   Downloaded rustix v0.38.9
[INFO] [stderr]   Downloaded deunicode v0.4.4
[INFO] [stderr]   Downloaded quick-xml v0.29.0
[INFO] [stderr]   Downloaded proptest v1.2.0
[INFO] [stderr]   Downloaded tree-sitter-python v0.20.4
[INFO] [stderr]   Downloaded plist v1.5.0
[INFO] [stderr]   Downloaded thiserror-impl v1.0.47
[INFO] [stderr]   Downloaded similar v2.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc7475d5e384f9574db83304ec5fa7c4270c280ee24fc5d15bd1463e48a9efb0
[INFO] running `Command { std: "docker" "start" "-a" "bc7475d5e384f9574db83304ec5fa7c4270c280ee24fc5d15bd1463e48a9efb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc7475d5e384f9574db83304ec5fa7c4270c280ee24fc5d15bd1463e48a9efb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc7475d5e384f9574db83304ec5fa7c4270c280ee24fc5d15bd1463e48a9efb0", kill_on_drop: false }`
[INFO] [stdout] bc7475d5e384f9574db83304ec5fa7c4270c280ee24fc5d15bd1463e48a9efb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfc5ddf6db7fc7750fcccca92ecfe4f2f09560c7a3c920b9784c1db880af4bcc
[INFO] running `Command { std: "docker" "start" "-a" "cfc5ddf6db7fc7750fcccca92ecfe4f2f09560c7a3c920b9784c1db880af4bcc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]    Compiling rustix v0.38.9
[INFO] [stderr]    Compiling unicode_titlecase v2.2.1
[INFO] [stderr]     Checking bitflags v2.4.0
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking anstyle v1.0.2
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling rustix v0.37.26
[INFO] [stderr]     Checking linux-raw-sys v0.4.5
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking lock_api v0.4.10
[INFO] [stderr]    Compiling fst v0.4.7
[INFO] [stderr]    Compiling thiserror v1.0.47
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling semver v1.0.18
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking aho-corasick v1.0.4
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling crossbeam-channel v0.5.8
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking anstream v0.5.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking clap_lex v0.5.1
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]    Compiling crossbeam-deque v0.8.3
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]    Compiling async-trait v0.1.73
[INFO] [stderr]     Checking gimli v0.28.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling tree-sitter v0.20.10
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]    Compiling onig_sys v69.8.1
[INFO] [stderr]    Compiling decompound v0.3.0
[INFO] [stderr]    Compiling tree-sitter-python v0.20.4
[INFO] [stderr]    Compiling tree-sitter-typescript v0.20.2
[INFO] [stderr]    Compiling tree-sitter-c-sharp v0.20.0
[INFO] [stderr]     Checking object v0.32.0
[INFO] [stderr]    Compiling cached_proc_macro_types v0.1.0
[INFO] [stderr]    Compiling rayon v1.7.0
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking regex-automata v0.3.8
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]    Compiling serde_json v1.0.105
[INFO] [stderr]     Checking terminal_size v0.2.6
[INFO] [stderr]     Checking clap_builder v4.4.0
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]    Compiling rstest_macros v0.18.2
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking fastrand v2.0.0
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking joinery v2.1.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking predicates-core v1.0.6
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]     Checking walkdir v2.3.3
[INFO] [stderr]     Checking tempfile v3.8.0
[INFO] [stderr]     Checking flate2 v1.0.27
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]     Checking hashbrown v0.14.0
[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/385fa9d845dd326c6bbfd58c22244215e431948a/bin/rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/syn-1.0.109/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"' -C metadata=a1684b2b82177766 -C extra-filename=-a1684b2b82177766 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-b6b142e4bf85e3e1.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-4d9f61025a3c97e4.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-c50f7aaa526ef20c.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" "cfc5ddf6db7fc7750fcccca92ecfe4f2f09560c7a3c920b9784c1db880af4bcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfc5ddf6db7fc7750fcccca92ecfe4f2f09560c7a3c920b9784c1db880af4bcc", kill_on_drop: false }`
[INFO] [stdout] cfc5ddf6db7fc7750fcccca92ecfe4f2f09560c7a3c920b9784c1db880af4bcc