[INFO] fetching crate az-stm32-flash 2026.5.16...
[INFO] checking az-stm32-flash-2026.5.16 against 40527f3e444fde1deb361751bdef9b9e11d1b971+rustflags=--cfg crater_hack --force-warn invalid-c-variadic-arguments for pr-162478
[INFO] extracting crate az-stm32-flash 2026.5.16 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate az-stm32-flash 2026.5.16
[INFO] finished tweaking crates.io crate az-stm32-flash 2026.5.16
[INFO] tweaked toml for crates.io crate az-stm32-flash 2026.5.16 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate az-stm32-flash 2026.5.16 on toolchain 40527f3e444fde1deb361751bdef9b9e11d1b971
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate az-stm32-flash 2026.5.16 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" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | 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: `az-stm32-flash` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 75bef90c84618f11a5483e6cc4d02cfe0a608f5af087507a5de374534a5ab161
[INFO] running `Command { std: "docker" "start" "75bef90c84618f11a5483e6cc4d02cfe0a608f5af087507a5de374534a5ab161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75bef90c84618f11a5483e6cc4d02cfe0a608f5af087507a5de374534a5ab161", 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" "75bef90c84618f11a5483e6cc4d02cfe0a608f5af087507a5de374534a5ab161" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75bef90c84618f11a5483e6cc4d02cfe0a608f5af087507a5de374534a5ab161", 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 --cfg crater_hack --force-warn invalid-c-variadic-arguments" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "75bef90c84618f11a5483e6cc4d02cfe0a608f5af087507a5de374534a5ab161" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "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:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | 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: `az-stm32-flash` (manifest) generated 1 warning
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]     Checking stable_deref_trait v1.2.1
[INFO] [stderr]     Checking typenum v1.20.0
[INFO] [stderr]    Compiling hashbrown v0.17.0
[INFO] [stderr]     Checking memchr v2.8.0
[INFO] [stderr]    Compiling writeable v0.6.3
[INFO] [stderr]    Compiling litemap v0.8.2
[INFO] [stderr]    Compiling utf8_iter v1.0.4
[INFO] [stderr]    Compiling libc v0.2.185
[INFO] [stderr]    Compiling icu_properties_data v2.2.0
[INFO] [stderr]    Compiling icu_normalizer_data v2.2.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling zerofrom v0.1.7
[INFO] [stderr]    Compiling winnow v1.0.2
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling yoke v0.8.2
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling zerovec v0.11.6
[INFO] [stderr]    Compiling toml_datetime v1.1.1+spec-1.1.0
[INFO] [stderr]    Compiling percent-encoding v2.3.2
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]    Compiling zerotrie v0.2.4
[INFO] [stderr]     Checking tinystr v0.8.3
[INFO] [stderr]     Checking potential_utf v0.1.5
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]     Checking icu_collections v2.2.0
[INFO] [stderr]     Checking linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking hybrid-array v0.4.10
[INFO] [stderr]     Checking icu_locale_core v2.2.0
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking csv-core v0.1.13
[INFO] [stderr]     Checking crypto-common v0.1.7
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking no_std_io2 v0.8.1
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking twox-hash v2.1.2
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling ryu v1.0.23
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.11
[INFO] [stderr]    Compiling heapless v0.9.2
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]     Checking thiserror v2.0.18
[INFO] [stderr]    Compiling unty v0.0.4
[INFO] [stderr]     Checking crypto-common v0.2.1
[INFO] [stderr]     Checking icu_provider v2.2.0
[INFO] [stderr]     Checking block-buffer v0.12.0
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]    Compiling object v0.39.1
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]     Checking hash32 v0.3.1
[INFO] [stderr]    Compiling toml_parser v1.1.2+spec-1.1.0
[INFO] [stderr]     Checking ruzstd v0.8.2
[INFO] [stderr]     Checking icu_properties v2.2.0
[INFO] [stderr]     Checking icu_normalizer v2.2.0
[INFO] [stderr]     Checking parse_int v0.9.0
[INFO] [stderr]    Compiling strum_macros v0.28.0
[INFO] [stderr]    Compiling bytemuck_derive v1.10.2
[INFO] [stderr]     Checking digest v0.11.2
[INFO] [stderr]    Compiling miette-derive v7.6.0
[INFO] [stderr]    Compiling async-io v2.6.0
[INFO] [stderr]     Checking fallible-iterator v0.3.0
[INFO] [stderr]    Compiling object v0.38.1
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]    Compiling indexmap v2.14.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking md-5 v0.11.0
[INFO] [stderr]     Checking miette v7.6.0
[INFO] [stderr]     Checking concurrent-queue v2.5.0
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking futures-lite v2.6.1
[INFO] [stderr]     Checking regex v1.12.3
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking bitflags v2.11.1
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]    Compiling jep106 v0.3.0
[INFO] [stderr]    Compiling bincode v2.0.1
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]     Checking strum v0.27.2
[INFO] [stderr]     Checking csv v1.4.0
[INFO] [stderr]     Checking bytemuck v1.25.0
[INFO] [stderr]     Checking lock_api v0.4.14
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]     Checking serde_with v3.18.0
[INFO] [stderr]     Checking gimli v0.32.3
[INFO] [stderr]     Checking unescaper v0.1.8
[INFO] [stderr]     Checking rmp v0.8.15
[INFO] [stderr]    Compiling toml_edit v0.25.11+spec-1.1.0
[INFO] [stderr]    Compiling serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking serde_plain v1.0.2
[INFO] [stderr]     Checking url v2.5.8
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `AtFlags`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nix-0.26.4/src/unistd.rs:929:56
[INFO] [stdout]     |
[INFO] [stdout] 929 |                       args_p.as_ptr(), env_p.as_ptr(), flags);
[INFO] [stdout]     |                                                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `AtFlags` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nix-0.26.4/src/unistd.rs:929:56
[INFO] [stdout]     |
[INFO] [stdout] 929 |                       args_p.as_ptr(), env_p.as_ptr(), flags);
[INFO] [stdout]     |                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: values passed as C-variadic arguments must implement `core::ffi::VaArgSafe`
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162483 <https://github.com/rust-lang/rust/issues/162483>
[INFO] [stdout]     = note: requested on the command line with `--force-warn invalid-c-variadic-arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling docsplay-macros v0.1.2
[INFO] [stderr] error: could not compile `nix` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `NonZero<usize>`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nix-0.30.1/src/sys/prctl.rs:225:97
[INFO] [stdout]     |
[INFO] [stdout] 225 |     let res = unsafe { libc::prctl(libc::PR_SET_VMA, libc::PR_SET_VMA_ANON_NAME, addr.as_ptr(), length, nameref) };
[INFO] [stdout]     |                                                                                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `NonZero<usize>` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nix-0.30.1/src/sys/prctl.rs:225:97
[INFO] [stdout]     |
[INFO] [stdout] 225 |     let res = unsafe { libc::prctl(libc::PR_SET_VMA, libc::PR_SET_VMA_ANON_NAME, addr.as_ptr(), length, nameref) };
[INFO] [stdout]     |                                                                                                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: values passed as C-variadic arguments must implement `core::ffi::VaArgSafe`
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162483 <https://github.com/rust-lang/rust/issues/162483>
[INFO] [stdout]     = note: requested on the command line with `--force-warn invalid-c-variadic-arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `AtFlags`.
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nix-0.30.1/src/unistd.rs:1233:13
[INFO] [stdout]      |
[INFO] [stdout] 1233 |             flags,
[INFO] [stdout]      |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `AtFlags` does not implement `VaArgSafe`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nix-0.30.1/src/unistd.rs:1233:13
[INFO] [stdout]      |
[INFO] [stdout] 1233 |             flags,
[INFO] [stdout]      |             ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: values passed as C-variadic arguments must implement `core::ffi::VaArgSafe`
[INFO] [stdout]      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]      = note: for more information, see issue #162483 <https://github.com/rust-lang/rust/issues/162483>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nix` (lib) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "75bef90c84618f11a5483e6cc4d02cfe0a608f5af087507a5de374534a5ab161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75bef90c84618f11a5483e6cc4d02cfe0a608f5af087507a5de374534a5ab161", kill_on_drop: false }`
[INFO] [stdout] 75bef90c84618f11a5483e6cc4d02cfe0a608f5af087507a5de374534a5ab161
