[INFO] cloning repository https://github.com/NeroReflex/AtomButter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NeroReflex/AtomButter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNeroReflex%2FAtomButter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNeroReflex%2FAtomButter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d35a3478acbbced8e3ab1500759aeb2fa7906f5
[INFO] checking NeroReflex/AtomButter 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%2FNeroReflex%2FAtomButter" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/NeroReflex/AtomButter
[INFO] finished tweaking git repo https://github.com/NeroReflex/AtomButter
[INFO] tweaked toml for git repo https://github.com/NeroReflex/AtomButter written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/NeroReflex/AtomButter 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/NeroReflex/AtomButter 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] bc7eab2f66e7dffaac1d30073c5cbda196099ed09a7c6f42a2023d15e4f0887e
[INFO] running `Command { std: "docker" "start" "bc7eab2f66e7dffaac1d30073c5cbda196099ed09a7c6f42a2023d15e4f0887e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc7eab2f66e7dffaac1d30073c5cbda196099ed09a7c6f42a2023d15e4f0887e", 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" "bc7eab2f66e7dffaac1d30073c5cbda196099ed09a7c6f42a2023d15e4f0887e" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc7eab2f66e7dffaac1d30073c5cbda196099ed09a7c6f42a2023d15e4f0887e", 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" "bc7eab2f66e7dffaac1d30073c5cbda196099ed09a7c6f42a2023d15e4f0887e" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking atomrootfsinit v0.7.5 (/opt/rustwide/workdir)
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `Option<&[u8]>`.
[INFO] [stdout]     --> src/main.rs:1122:25
[INFO] [stdout]      |
[INFO] [stdout] 1122 |                         rdname_content.as_slice(),
[INFO] [stdout]      |                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Option<&[u8]>` does not implement `VaArgSafe`
[INFO] [stdout]     --> src/main.rs:1122:25
[INFO] [stdout]      |
[INFO] [stdout] 1122 |                         rdname_content.as_slice(),
[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<&[u8]>`.
[INFO] [stdout]     --> src/main.rs:1138:29
[INFO] [stdout]      |
[INFO] [stdout] 1138 | ...                   rdname_content.as_slice(),
[INFO] [stdout]      |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Option<&[u8]>` does not implement `VaArgSafe`
[INFO] [stdout]     --> src/main.rs:1138:29
[INFO] [stdout]      |
[INFO] [stdout] 1138 | ...                   rdname_content.as_slice(),
[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 `atomrootfsinit` (bin "atomrootfsinit") due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `Option<&[u8]>`.
[INFO] [stdout]     --> src/main.rs:1122:25
[INFO] [stdout]      |
[INFO] [stdout] 1122 |                         rdname_content.as_slice(),
[INFO] [stdout]      |                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Option<&[u8]>` does not implement `VaArgSafe`
[INFO] [stdout]     --> src/main.rs:1122:25
[INFO] [stdout]      |
[INFO] [stdout] 1122 |                         rdname_content.as_slice(),
[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<&[u8]>`.
[INFO] [stdout]     --> src/main.rs:1138:29
[INFO] [stdout]      |
[INFO] [stdout] 1138 | ...                   rdname_content.as_slice(),
[INFO] [stdout]      |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Option<&[u8]>` does not implement `VaArgSafe`
[INFO] [stdout]     --> src/main.rs:1138:29
[INFO] [stdout]      |
[INFO] [stdout] 1138 | ...                   rdname_content.as_slice(),
[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 `atomrootfsinit` (bin "atomrootfsinit" test) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "bc7eab2f66e7dffaac1d30073c5cbda196099ed09a7c6f42a2023d15e4f0887e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc7eab2f66e7dffaac1d30073c5cbda196099ed09a7c6f42a2023d15e4f0887e", kill_on_drop: false }`
[INFO] [stdout] bc7eab2f66e7dffaac1d30073c5cbda196099ed09a7c6f42a2023d15e4f0887e
