[INFO] fetching crate impcurl-ws 1.1.1...
[INFO] checking impcurl-ws-1.1.1 against 40527f3e444fde1deb361751bdef9b9e11d1b971+rustflags=--cfg crater_hack --force-warn invalid-c-variadic-arguments for pr-162478
[INFO] extracting crate impcurl-ws 1.1.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate impcurl-ws 1.1.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate impcurl-ws 1.1.1
[INFO] tweaked toml for crates.io crate impcurl-ws 1.1.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate impcurl-ws 1.1.1 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 impcurl-ws 1.1.1 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" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | 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: `impcurl-ws` (manifest) generated 1 warning
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] 5fffdba7f03eb024b5d3db2768726fca68e4c5c28463f127b5d456bbcb41b175
[INFO] running `Command { std: "docker" "start" "5fffdba7f03eb024b5d3db2768726fca68e4c5c28463f127b5d456bbcb41b175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fffdba7f03eb024b5d3db2768726fca68e4c5c28463f127b5d456bbcb41b175", 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" "5fffdba7f03eb024b5d3db2768726fca68e4c5c28463f127b5d456bbcb41b175" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fffdba7f03eb024b5d3db2768726fca68e4c5c28463f127b5d456bbcb41b175", 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" "5fffdba7f03eb024b5d3db2768726fca68e4c5c28463f127b5d456bbcb41b175" "/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:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | 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: `impcurl-ws` (manifest) generated 1 warning
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]    Compiling libc v0.2.182
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking regex-syntax v0.8.9
[INFO] [stderr]     Checking bytes v1.11.1
[INFO] [stderr]     Checking log v0.4.29
[INFO] [stderr]    Compiling impcurl-ws v1.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking anyhow v1.0.102
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking thread_local v1.1.9
[INFO] [stderr]     Checking nu-ansi-term v0.50.3
[INFO] [stderr]     Checking itoa v1.0.17
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]     Checking serde_json v1.0.149
[INFO] [stderr]     Checking tracing-core v0.1.36
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]     Checking socket2 v0.6.2
[INFO] [stderr]     Checking mio v1.1.1
[INFO] [stderr]     Checking matchers v0.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]     Checking tokio v1.49.0
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking tracing-subscriber v0.3.22
[INFO] [stderr]     Checking thiserror v2.0.18
[INFO] [stderr]     Checking impcurl-sys v1.1.1
[INFO] [stderr]     Checking impcurl v1.1.1
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `Option<unsafe extern "C" fn(*mut Curl, i32, i32, *mut c_void, *mut c_void) -> i32>`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/impcurl-1.1.1/src/lib.rs:170:83
[INFO] [stdout]     |
[INFO] [stdout] 170 |             unsafe { (self.api.multi_setopt)(self.multi, CURLMOPT_SOCKETFUNCTION, callback) };
[INFO] [stdout]     |                                                                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Option<unsafe extern "C" fn(*mut Curl, i32, i32, *mut c_void, *mut c_void) -> i32>` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/impcurl-1.1.1/src/lib.rs:170:83
[INFO] [stdout]     |
[INFO] [stdout] 170 |             unsafe { (self.api.multi_setopt)(self.multi, CURLMOPT_SOCKETFUNCTION, callback) };
[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 `Option<unsafe extern "C" fn(*mut CurlMulti, i64, *mut c_void) -> i32>`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/impcurl-1.1.1/src/lib.rs:191:82
[INFO] [stdout]     |
[INFO] [stdout] 191 |             unsafe { (self.api.multi_setopt)(self.multi, CURLMOPT_TIMERFUNCTION, callback) };
[INFO] [stdout]     |                                                                                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Option<unsafe extern "C" fn(*mut CurlMulti, i64, *mut c_void) -> i32>` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/impcurl-1.1.1/src/lib.rs:191:82
[INFO] [stdout]     |
[INFO] [stdout] 191 |             unsafe { (self.api.multi_setopt)(self.multi, CURLMOPT_TIMERFUNCTION, callback) };
[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 `impcurl` (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" "5fffdba7f03eb024b5d3db2768726fca68e4c5c28463f127b5d456bbcb41b175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fffdba7f03eb024b5d3db2768726fca68e4c5c28463f127b5d456bbcb41b175", kill_on_drop: false }`
[INFO] [stdout] 5fffdba7f03eb024b5d3db2768726fca68e4c5c28463f127b5d456bbcb41b175
