[INFO] fetching crate ductus 0.52.1...
[INFO] checking ductus-0.52.1 against a621e2b446eafb53c7a8569f225e0b8cc2429a68 for pr-162600
[INFO] extracting crate ductus 0.52.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate ductus 0.52.1
[INFO] finished tweaking crates.io crate ductus 0.52.1
[INFO] tweaked toml for crates.io crate ductus 0.52.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ductus 0.52.1 on toolchain a621e2b446eafb53c7a8569f225e0b8cc2429a68
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a621e2b446eafb53c7a8569f225e0b8cc2429a68" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ductus 0.52.1 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" "+a621e2b446eafb53c7a8569f225e0b8cc2429a68" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]    --> Cargo.toml:105:1
[INFO] [stderr]     |
[INFO] [stderr] 105 | readme = "README.md"
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `ductus` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 46ab38f65a80b35ed9e9678f9336d614640c76e264aa47ba25d2d256d92b2de6
[INFO] running `Command { std: "docker" "start" "46ab38f65a80b35ed9e9678f9336d614640c76e264aa47ba25d2d256d92b2de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46ab38f65a80b35ed9e9678f9336d614640c76e264aa47ba25d2d256d92b2de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "46ab38f65a80b35ed9e9678f9336d614640c76e264aa47ba25d2d256d92b2de6" "/opt/rustwide/cargo-home/bin/cargo" "+a621e2b446eafb53c7a8569f225e0b8cc2429a68" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46ab38f65a80b35ed9e9678f9336d614640c76e264aa47ba25d2d256d92b2de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "46ab38f65a80b35ed9e9678f9336d614640c76e264aa47ba25d2d256d92b2de6" "/opt/rustwide/cargo-home/bin/cargo" "+a621e2b446eafb53c7a8569f225e0b8cc2429a68" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]    --> Cargo.toml:105:1
[INFO] [stderr]     |
[INFO] [stderr] 105 | readme = "README.md"
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `ductus` (manifest) generated 1 warning
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling aws-lc-rs v1.18.1
[INFO] [stderr]     Checking bitflags v2.13.0
[INFO] [stderr]     Checking http v1.4.2
[INFO] [stderr]    Compiling rustls v0.23.45
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling darling_core v0.23.0
[INFO] [stderr]    Compiling serde_json v1.0.150
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]    Compiling serde_derive_internals v0.29.1
[INFO] [stderr]    Compiling ref-cast-impl v1.0.25
[INFO] [stderr]     Checking rustix v1.1.4
[INFO] [stderr]    Compiling memchr v2.8.3
[INFO] [stderr]     Checking anstream v1.0.0
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]     Checking url v2.5.8
[INFO] [stderr]     Checking ref-cast v1.0.25
[INFO] [stderr]    Compiling pulldown-cmark v0.13.4
[INFO] [stderr]     Checking winnow v1.0.3
[INFO] [stderr]    Compiling rmcp v2.2.0
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]     Checking zlib-rs v0.6.6
[INFO] [stderr]     Checking bumpalo v3.20.3
[INFO] [stderr]     Checking clap_lex v1.1.0
[INFO] [stderr]    Compiling clap_derive v4.6.1
[INFO] [stderr]     Checking toml_parser v1.1.2+spec-1.1.0
[INFO] [stderr]     Checking clap_builder v4.6.0
[INFO] [stderr]    Compiling schemars_derive v1.2.1
[INFO] [stderr]     Checking regex-automata v0.4.15
[INFO] [stderr]     Checking zopfli v0.8.3
[INFO] [stderr]    Compiling jobserver v0.1.35
[INFO] [stderr]     Checking errno v0.3.14
[INFO] [stderr]     Checking socket2 v0.6.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling cc v1.2.66
[INFO] [stderr]     Checking mio v1.2.1
[INFO] [stderr]     Checking getrandom v0.4.3
[INFO] [stderr]     Checking filetime v0.2.29
[INFO] [stderr]     Checking thiserror v2.0.18
[INFO] [stderr]     Checking xattr v1.6.1
[INFO] [stderr]     Checking http-body-util v0.1.3
[INFO] [stderr]     Checking getopts v0.2.24
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]     Checking typed-path v0.12.3
[INFO] [stderr]     Checking tokio v1.52.3
[INFO] [stderr]     Checking toml_writer v1.1.1+spec-1.1.0
[INFO] [stderr]    Compiling pastey v0.2.3
[INFO] [stderr]     Checking flate2 v1.1.9
[INFO] [stderr]     Checking unsafe-libyaml-norway v0.2.15
[INFO] [stderr]     Checking pulldown-cmark-escape v0.11.0
[INFO] [stderr]    Compiling cmake v0.1.58
[INFO] [stderr]     Checking zip v8.6.0
[INFO] [stderr]     Checking tempfile v3.27.0
[INFO] [stderr] error: could not compile `serde_core` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/a621e2b446eafb53c7a8569f225e0b8cc2429a68/bin/rustc --crate-name serde_core --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_core-1.0.228/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat,unused-externs-silent --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="rc"' --cfg 'feature="result"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "default", "rc", "result", "std", "unstable"))' -C metadata=0461edf50b803e9c -C extra-filename=-c3fb5a998c9471b6 --out-dir /opt/rustwide/target/debug/build/serde_core/c3fb5a998c9471b6/out --cap-lints allow --cap-lints=forbid --force-warn=unused_crate_dependencies --check-cfg 'cfg(if_docsrs_then_no_serde_core)' --check-cfg 'cfg(no_core_cstr)' --check-cfg 'cfg(no_core_error)' --check-cfg 'cfg(no_core_net)' --check-cfg 'cfg(no_core_num_saturating)' --check-cfg 'cfg(no_diagnostic_namespace)' --check-cfg 'cfg(no_serde_derive)' --check-cfg 'cfg(no_std_atomic)' --check-cfg 'cfg(no_std_atomic64)' --check-cfg 'cfg(no_target_has_atomic)'` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "46ab38f65a80b35ed9e9678f9336d614640c76e264aa47ba25d2d256d92b2de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46ab38f65a80b35ed9e9678f9336d614640c76e264aa47ba25d2d256d92b2de6", kill_on_drop: false }`
[INFO] [stdout] 46ab38f65a80b35ed9e9678f9336d614640c76e264aa47ba25d2d256d92b2de6
