[INFO] fetching crate sandlock-ffi 0.8.7...
[INFO] checking sandlock-ffi-0.8.7 against 40527f3e444fde1deb361751bdef9b9e11d1b971+rustflags=--cfg crater_hack --force-warn invalid-c-variadic-arguments for pr-162478
[INFO] extracting crate sandlock-ffi 0.8.7 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate sandlock-ffi 0.8.7
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate sandlock-ffi 0.8.7
[INFO] tweaked toml for crates.io crate sandlock-ffi 0.8.7 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sandlock-ffi 0.8.7 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 sandlock-ffi 0.8.7 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:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | 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: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | homepage = "https://github.com/multikernel/sandlock"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 36 | repository = "https://github.com/multikernel/sandlock"
[INFO] [stderr]    |              -----------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `sandlock-ffi` (manifest) generated 2 warnings
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 29de6c0a97ff0308695afc7ea6668c769d13bd53a1ca4a346cfbc5cc91645a12
[INFO] running `Command { std: "docker" "start" "29de6c0a97ff0308695afc7ea6668c769d13bd53a1ca4a346cfbc5cc91645a12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29de6c0a97ff0308695afc7ea6668c769d13bd53a1ca4a346cfbc5cc91645a12", 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" "29de6c0a97ff0308695afc7ea6668c769d13bd53a1ca4a346cfbc5cc91645a12" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29de6c0a97ff0308695afc7ea6668c769d13bd53a1ca4a346cfbc5cc91645a12", 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" "29de6c0a97ff0308695afc7ea6668c769d13bd53a1ca4a346cfbc5cc91645a12" "/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:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | 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: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | homepage = "https://github.com/multikernel/sandlock"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 36 | repository = "https://github.com/multikernel/sandlock"
[INFO] [stderr]    |              -----------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `sandlock-ffi` (manifest) generated 2 warnings
[INFO] [stderr]    Compiling cc v1.2.59
[INFO] [stderr]    Compiling num-conv v0.2.1
[INFO] [stderr]    Compiling time-core v0.1.8
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking mio v1.2.0
[INFO] [stderr]     Checking slab v0.4.12
[INFO] [stderr]    Compiling oid-registry v0.7.1
[INFO] [stderr]     Checking percent-encoding v2.3.2
[INFO] [stderr]    Compiling rustls v0.22.4
[INFO] [stderr]     Checking zerocopy v0.8.48
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]     Checking rustix v1.1.4
[INFO] [stderr]     Checking serde_json v1.0.149
[INFO] [stderr]     Checking rustls-pemfile v2.2.0
[INFO] [stderr]    Compiling syscalls v0.8.1
[INFO] [stderr]     Checking filetime v0.2.29
[INFO] [stderr]     Checking rustls-native-certs v0.7.3
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking form_urlencoded v1.2.2
[INFO] [stderr]    Compiling sandlock-core v0.8.7
[INFO] [stderr]    Compiling time-macros v0.2.27
[INFO] [stderr]    Compiling sandlock-ffi v0.8.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking jiff v0.2.23
[INFO] [stderr]     Checking uuid v1.23.0
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking time v0.3.47
[INFO] [stderr]    Compiling ring v0.17.14
[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-0.29.0/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-0.29.0/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-0.29.0/src/unistd.rs:956:13
[INFO] [stdout]     |
[INFO] [stdout] 956 |             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-0.29.0/src/unistd.rs:956:13
[INFO] [stdout]     |
[INFO] [stdout] 956 |             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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "29de6c0a97ff0308695afc7ea6668c769d13bd53a1ca4a346cfbc5cc91645a12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29de6c0a97ff0308695afc7ea6668c769d13bd53a1ca4a346cfbc5cc91645a12", kill_on_drop: false }`
[INFO] [stdout] 29de6c0a97ff0308695afc7ea6668c769d13bd53a1ca4a346cfbc5cc91645a12
