[INFO] cloning repository https://github.com/cubelio/otter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cubelio/otter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcubelio%2Fotter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcubelio%2Fotter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a711ae6ccc5e386be22764a68e6d6752a2079ea2
[INFO] checking cubelio/otter against 40527f3e444fde1deb361751bdef9b9e11d1b971+rustflags=--cfg crater_hack --force-warn invalid-c-variadic-arguments for pr-162478
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcubelio%2Fotter" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cubelio/otter
[INFO] finished tweaking git repo https://github.com/cubelio/otter
[INFO] tweaked toml for git repo https://github.com/cubelio/otter written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cubelio/otter 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 git repo https://github.com/cubelio/otter 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]   --> otter/Cargo.toml:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | 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]   --> otter/Cargo.toml:10:12
[INFO] [stderr]    |
[INFO] [stderr]  9 | repository = "https://github.com/cubelio/otter"
[INFO] [stderr]    |              ----------------------------------
[INFO] [stderr] 10 | homepage = "https://github.com/cubelio/otter"
[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: `otter-nif` (manifest) generated 2 warnings
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 8ebbaf5814cbad8006d5bdd95a4c53b77c7296d40ffa61ce432e923dee7ee1f2
[INFO] running `Command { std: "docker" "start" "8ebbaf5814cbad8006d5bdd95a4c53b77c7296d40ffa61ce432e923dee7ee1f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ebbaf5814cbad8006d5bdd95a4c53b77c7296d40ffa61ce432e923dee7ee1f2", 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" "8ebbaf5814cbad8006d5bdd95a4c53b77c7296d40ffa61ce432e923dee7ee1f2" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ebbaf5814cbad8006d5bdd95a4c53b77c7296d40ffa61ce432e923dee7ee1f2", 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" "8ebbaf5814cbad8006d5bdd95a4c53b77c7296d40ffa61ce432e923dee7ee1f2" "/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]   --> otter/Cargo.toml:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | 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]   --> otter/Cargo.toml:10:12
[INFO] [stderr]    |
[INFO] [stderr]  9 | repository = "https://github.com/cubelio/otter"
[INFO] [stderr]    |              ----------------------------------
[INFO] [stderr] 10 | homepage = "https://github.com/cubelio/otter"
[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: `otter-nif` (manifest) generated 2 warnings
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling target-triple v1.0.0
[INFO] [stderr]     Checking winnow v1.0.3
[INFO] [stderr]     Checking toml_writer v1.1.1+spec-1.1.0
[INFO] [stderr]     Checking glob v0.3.3
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking serde_spanned v1.1.1
[INFO] [stderr]     Checking toml_datetime v1.1.1+spec-1.1.0
[INFO] [stderr]     Checking enif-ffi v0.2.0
[INFO] [stderr]     Checking serde_json v1.0.150
[INFO] [stderr]     Checking otter-nif-macros v0.3.1 (/opt/rustwide/workdir/otter_codegen)
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `unsafe extern "C" fn(*mut c_void)`.
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/enif-ffi-0.2.0/src/api.rs:3866:55
[INFO] [stdout]      |
[INFO] [stdout] 3866 |     unsafe { (api().set_option)(env, Option_::OnHalt, on_halt) }
[INFO] [stdout]      |                                                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `unsafe extern "C" fn(*mut c_void)` does not implement `VaArgSafe`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/enif-ffi-0.2.0/src/api.rs:3866:55
[INFO] [stdout]      |
[INFO] [stdout] 3866 |     unsafe { (api().set_option)(env, Option_::OnHalt, on_halt) }
[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 `unsafe extern "C" fn(*mut c_void)`.
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/enif-ffi-0.2.0/src/api.rs:3891:63
[INFO] [stdout]      |
[INFO] [stdout] 3891 |     unsafe { (api().set_option)(env, Option_::OnUnloadThread, on_unload_thread) }
[INFO] [stdout]      |                                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `unsafe extern "C" fn(*mut c_void)` does not implement `VaArgSafe`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/enif-ffi-0.2.0/src/api.rs:3891:63
[INFO] [stdout]      |
[INFO] [stdout] 3891 |     unsafe { (api().set_option)(env, Option_::OnUnloadThread, on_unload_thread) }
[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 `enif-ffi` (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" "8ebbaf5814cbad8006d5bdd95a4c53b77c7296d40ffa61ce432e923dee7ee1f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ebbaf5814cbad8006d5bdd95a4c53b77c7296d40ffa61ce432e923dee7ee1f2", kill_on_drop: false }`
[INFO] [stdout] 8ebbaf5814cbad8006d5bdd95a4c53b77c7296d40ffa61ce432e923dee7ee1f2