[INFO] cloning repository https://github.com/xchg-rax-rax/pop3_server_lib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xchg-rax-rax/pop3_server_lib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxchg-rax-rax%2Fpop3_server_lib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxchg-rax-rax%2Fpop3_server_lib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 539a4dab9b4cd50f8a2921a2efdef2787f15fefb
[INFO] checking xchg-rax-rax/pop3_server_lib against try#dd2d87b6cc31907ae305875eb6be399783dc0256 for pr-143929
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxchg-rax-rax%2Fpop3_server_lib" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/xchg-rax-rax/pop3_server_lib
[INFO] finished tweaking git repo https://github.com/xchg-rax-rax/pop3_server_lib
[INFO] tweaked toml for git repo https://github.com/xchg-rax-rax/pop3_server_lib written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/xchg-rax-rax/pop3_server_lib on toolchain dd2d87b6cc31907ae305875eb6be399783dc0256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/xchg-rax-rax/pop3_server_lib 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" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7cbd03f906a2f862fe64149ba1f186db7db94429f9d99eddef20469db7eb1837
[INFO] running `Command { std: "docker" "start" "-a" "7cbd03f906a2f862fe64149ba1f186db7db94429f9d99eddef20469db7eb1837", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7cbd03f906a2f862fe64149ba1f186db7db94429f9d99eddef20469db7eb1837", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cbd03f906a2f862fe64149ba1f186db7db94429f9d99eddef20469db7eb1837", kill_on_drop: false }`
[INFO] [stdout] 7cbd03f906a2f862fe64149ba1f186db7db94429f9d99eddef20469db7eb1837
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9d0fde79ec13c6bd996d878c4f6734c4fa63656144965df37f22f65fd50414e
[INFO] running `Command { std: "docker" "start" "-a" "e9d0fde79ec13c6bd996d878c4f6734c4fa63656144965df37f22f65fd50414e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.31
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking once_cell v1.20.3
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]     Checking litemap v0.7.4
[INFO] [stderr]     Checking bitflags v2.8.0
[INFO] [stderr]     Checking writeable v0.5.5
[INFO] [stderr]     Checking bytes v1.10.0
[INFO] [stderr]     Checking itoa v1.0.14
[INFO] [stderr]     Checking icu_locid_transform_data v1.5.0
[INFO] [stderr]     Checking equivalent v1.0.2
[INFO] [stderr]     Checking hashbrown v0.15.2
[INFO] [stderr]     Checking crc32fast v1.4.2
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking tracing-core v0.1.33
[INFO] [stderr]     Checking icu_properties_data v1.5.0
[INFO] [stderr]     Checking log v0.4.25
[INFO] [stderr]     Checking smallvec v1.14.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking utf16_iter v1.0.5
[INFO] [stderr]    Compiling openssl v0.10.71
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]     Checking write16 v1.0.0
[INFO] [stderr]     Checking icu_normalizer_data v1.5.0
[INFO] [stderr]     Checking utf8_iter v1.0.4
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking adler2 v2.0.0
[INFO] [stderr]    Compiling httparse v1.10.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]     Checking http v0.2.12
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]     Checking futures-io v0.3.31
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling native-tls v0.2.13
[INFO] [stderr]     Checking openssl-probe v0.1.6
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]     Checking miniz_oxide v0.8.4
[INFO] [stderr]     Checking indexmap v2.7.1
[INFO] [stderr]     Checking ryu v1.0.19
[INFO] [stderr]     Checking try-lock v0.2.5
[INFO] [stderr]    Compiling unicase v2.8.1
[INFO] [stderr]    Compiling semver v1.0.25
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking httpdate v1.0.3
[INFO] [stderr]     Checking iana-time-zone v0.1.61
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking tower-service v0.3.3
[INFO] [stderr]     Checking utf8parse v0.2.2
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling serde_json v1.0.138
[INFO] [stderr]     Checking http-body v0.4.6
[INFO] [stderr]     Checking anstyle-parse v0.2.6
[INFO] [stderr]    Compiling jobserver v0.1.32
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]     Checking flate2 v1.0.35
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.1
[INFO] [stderr]     Checking base64 v0.21.7
[INFO] [stderr]     Checking anstyle-query v1.1.2
[INFO] [stderr]     Checking anstyle v1.0.10
[INFO] [stderr]     Checking colorchoice v1.0.3
[INFO] [stderr]    Compiling thiserror v2.0.11
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]    Compiling cc v1.2.14
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]     Checking mime v0.3.17
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking chrono v0.4.39
[INFO] [stderr]    Compiling camino v1.1.9
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]     Checking rustls-pemfile v1.0.4
[INFO] [stderr]     Checking anstream v0.6.18
[INFO] [stderr]     Checking gzip-header v1.0.0
[INFO] [stderr]     Checking encoding_rs v0.8.35
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]     Checking socket2 v0.5.8
[INFO] [stderr]     Checking ipnet v2.11.0
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling procfs v0.17.0
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]    Compiling llvm_profparser v0.7.1
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking strsim v0.11.1
[INFO] [stderr]     Checking linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking winnow v0.7.2
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking clap_lex v0.7.4
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking sync_wrapper v0.1.2
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking clap_builder v4.5.29
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]     Checking tokio v1.43.0
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling cargo-tarpaulin v0.32.0
[INFO] [stderr]     Checking ruzstd v0.7.3
[INFO] [stderr]     Checking procfs-core v0.17.0
[INFO] [stderr]     Checking object v0.26.2
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking cpufeatures v0.2.17
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking fallible-iterator v0.3.0
[INFO] [stderr]     Checking leb128 v0.2.5
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking quick-xml v0.37.2
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]     Checking gimli v0.31.1
[INFO] [stderr]    Compiling openssl-sys v0.9.106
[INFO] [stderr]    Compiling libz-sys v1.1.21
[INFO] [stderr]    Compiling libssh2-sys v0.3.1
[INFO] [stderr]    Compiling libgit2-sys v0.18.0+1.9.0
[INFO] [stderr]     Checking glob v0.3.2
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]    Compiling synstructure v0.13.1
[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/dd2d87b6cc31907ae305875eb6be399783dc0256/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.98/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=5d05daf318e3d778 -C extra-filename=-b4a81243d07e427b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-ba1164ef8c5072f6.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-45812ef4b8688a30.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-a3690edd3a41f0e2.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" "e9d0fde79ec13c6bd996d878c4f6734c4fa63656144965df37f22f65fd50414e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9d0fde79ec13c6bd996d878c4f6734c4fa63656144965df37f22f65fd50414e", kill_on_drop: false }`
[INFO] [stdout] e9d0fde79ec13c6bd996d878c4f6734c4fa63656144965df37f22f65fd50414e