[INFO] fetching crate mirror_sparse_matrix 0.1.17...
[INFO] checking mirror_sparse_matrix-0.1.17 against 40527f3e444fde1deb361751bdef9b9e11d1b971+rustflags=--cfg crater_hack --force-warn invalid-c-variadic-arguments for pr-162478
[INFO] extracting crate mirror_sparse_matrix 0.1.17 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate mirror_sparse_matrix 0.1.17
[INFO] finished tweaking crates.io crate mirror_sparse_matrix 0.1.17
[INFO] tweaked toml for crates.io crate mirror_sparse_matrix 0.1.17 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mirror_sparse_matrix 0.1.17 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 112 packages to highest compatible versions
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f9f28a89f54839dc62c0132b314004615ae347c7e92c78280790184f55980601
[INFO] running `Command { std: "docker" "start" "f9f28a89f54839dc62c0132b314004615ae347c7e92c78280790184f55980601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9f28a89f54839dc62c0132b314004615ae347c7e92c78280790184f55980601", 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" "f9f28a89f54839dc62c0132b314004615ae347c7e92c78280790184f55980601" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9f28a89f54839dc62c0132b314004615ae347c7e92c78280790184f55980601", 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" "f9f28a89f54839dc62c0132b314004615ae347c7e92c78280790184f55980601" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.189
[INFO] [stderr]    Compiling either v1.18.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling aho-corasick v1.1.5
[INFO] [stderr]    Compiling bytes v1.12.1
[INFO] [stderr]    Compiling regex-syntax v0.8.11
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling lz4-sys v1.11.1+lz4-1.10.0
[INFO] [stderr]    Compiling syn v3.0.5
[INFO] [stderr]    Compiling getrandom v0.4.3
[INFO] [stderr]    Compiling indexmap v2.14.2
[INFO] [stderr]    Compiling unicode-segmentation v1.13.3
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling fastrand v2.5.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling multimap v0.8.3
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]    Compiling cpp_demangle v0.3.5
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking permutation v0.2.5
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking superslice v1.0.0
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]     Checking vector_utils v0.1.5
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling findshlibs v0.10.2
[INFO] [stderr]     Checking debugid v0.7.3
[INFO] [stderr]    Compiling prost-build v0.9.0
[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]     Checking smallvec v1.16.1
[INFO] [stderr]    Compiling symbolic-demangle v8.8.0
[INFO] [stderr]     Checking rustc-demangle v0.1.28
[INFO] [stderr]     Checking bitflags v2.13.2
[INFO] [stderr]     Checking memchr v2.8.3
[INFO] [stderr]     Checking string_utils v0.1.4
[INFO] [stderr]     Checking object v0.37.3
[INFO] [stderr]     Checking stats_utils v0.1.3
[INFO] [stderr]    Compiling petgraph v0.6.5
[INFO] [stderr]    Compiling tempfile v3.27.0
[INFO] [stderr]     Checking memmap2 v0.5.10
[INFO] [stderr]     Checking symbolic-common v8.8.0
[INFO] [stderr]     Checking nix v0.23.2
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]    Compiling regex-automata v0.4.18
[INFO] [stderr]     Checking binary_vec_io v0.1.12
[INFO] [stderr]     Checking mirror_sparse_matrix v0.1.17 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `pos` is never read
[INFO] [stdout]    --> src/lib.rs:316:17
[INFO] [stdout]     |
[INFO] [stdout] 316 |                 pos += 1;
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling prost-derive v0.9.0
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]    Compiling prost v0.9.0
[INFO] [stderr]    Compiling prost-types v0.9.0
[INFO] [stderr]     Checking serde v1.0.229
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `AtFlags`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nix-0.23.2/src/unistd.rs:855:56
[INFO] [stdout]     |
[INFO] [stdout] 855 |                       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-0.23.2/src/unistd.rs:855:56
[INFO] [stdout]     |
[INFO] [stdout] 855 |                       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]     Checking backtrace v0.3.76
[INFO] [stderr]     Checking bincode v1.3.3
[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] running `Command { std: "docker" "inspect" "f9f28a89f54839dc62c0132b314004615ae347c7e92c78280790184f55980601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9f28a89f54839dc62c0132b314004615ae347c7e92c78280790184f55980601", kill_on_drop: false }`
[INFO] [stdout] f9f28a89f54839dc62c0132b314004615ae347c7e92c78280790184f55980601
