[INFO] fetching crate xsio 0.1.2...
[INFO] checking xsio-0.1.2 against 40527f3e444fde1deb361751bdef9b9e11d1b971+rustflags=--cfg crater_hack --force-warn invalid-c-variadic-arguments for pr-162478
[INFO] extracting crate xsio 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] removed /workspace/builds/worker-7-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate xsio 0.1.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate xsio 0.1.2
[INFO] tweaked toml for crates.io crate xsio 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate xsio 0.1.2 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 xsio 0.1.2 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:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | 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:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | homepage = "https://github.com/voidops/xsio"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 19 | repository = "https://github.com/voidops/xsio"
[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: `xsio` (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] b2f728f516284ddc74731fc53864f96c38706a6e17c2e7a5e166edcd25636334
[INFO] running `Command { std: "docker" "start" "b2f728f516284ddc74731fc53864f96c38706a6e17c2e7a5e166edcd25636334", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2f728f516284ddc74731fc53864f96c38706a6e17c2e7a5e166edcd25636334", 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" "b2f728f516284ddc74731fc53864f96c38706a6e17c2e7a5e166edcd25636334" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2f728f516284ddc74731fc53864f96c38706a6e17c2e7a5e166edcd25636334", 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" "b2f728f516284ddc74731fc53864f96c38706a6e17c2e7a5e166edcd25636334" "/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:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | 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:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | homepage = "https://github.com/voidops/xsio"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 19 | repository = "https://github.com/voidops/xsio"
[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: `xsio` (manifest) generated 2 warnings
[INFO] [stderr]     Checking xsio v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `time::Duration`
[INFO] [stdout]  --> src/udp/server/worker/worker.rs:1:98
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{net::SocketAddr, sync::{atomic::{AtomicBool, AtomicU64, Ordering}, mpsc::Sender, Arc}, time::Duration};
[INFO] [stdout]   |                                                                                                  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `pop::*`
[INFO] [stdout]  --> src/udp/server/modes/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use pop::*;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mpsc::Sender`
[INFO] [stdout]  --> src/udp/server/modes/popmany/mod.rs:1:36
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{sync::{atomic::Ordering, mpsc::Sender}, time::Duration};
[INFO] [stdout]   |                                    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `popmany::*`
[INFO] [stdout]  --> src/udp/server/modes/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use popmany::*;
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `kernel::*`
[INFO] [stdout]  --> src/udp/server/modes/mod.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use kernel::*;
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `time::Duration`
[INFO] [stdout]  --> src/udp/server/worker/worker.rs:1:98
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{net::SocketAddr, sync::{atomic::{AtomicBool, AtomicU64, Ordering}, mpsc::Sender, Arc}, time::Duration};
[INFO] [stdout]   |                                                                                                  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `pop::*`
[INFO] [stdout]  --> src/udp/server/modes/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use pop::*;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mpsc::Sender`
[INFO] [stdout]  --> src/udp/server/modes/popmany/mod.rs:1:36
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{sync::{atomic::Ordering, mpsc::Sender}, time::Duration};
[INFO] [stdout]   |                                    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `popmany::*`
[INFO] [stdout]  --> src/udp/server/modes/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use popmany::*;
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `kernel::*`
[INFO] [stdout]  --> src/udp/server/modes/mod.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use kernel::*;
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx_ring`
[INFO] [stdout]    --> src/udp/server/modes/kernel/mod.rs:128:17
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let tx_ring = unsafe {
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_ring`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]    --> src/udp/server/modes/kernel/mod.rs:178:17
[INFO] [stdout]     |
[INFO] [stdout] 178 |             let attr = bpf_attr {
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_attr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx_ring`
[INFO] [stdout]    --> src/udp/server/modes/kernel/mod.rs:128:17
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let tx_ring = unsafe {
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_ring`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]    --> src/udp/server/modes/kernel/mod.rs:178:17
[INFO] [stdout]     |
[INFO] [stdout] 178 |             let attr = bpf_attr {
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_attr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `number` is never read
[INFO] [stdout]   --> src/udp/server/worker/worker.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct XUdpServerWorker {
[INFO] [stdout]    |            ---------------- field in this struct
[INFO] [stdout] 15 |     pub(crate) number: usize,
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `number` is never read
[INFO] [stdout]   --> src/udp/server/worker/worker.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct XUdpServerWorker {
[INFO] [stdout]    |            ---------------- field in this struct
[INFO] [stdout] 15 |     pub(crate) number: usize,
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `BpfCmd`.
[INFO] [stdout]    --> src/core/sys/unix/bpf.rs:303:22
[INFO] [stdout]     |
[INFO] [stdout] 303 |     syscall(SYS_BPF, cmd, attr, size) as i32
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `BpfCmd` does not implement `VaArgSafe`
[INFO] [stdout]    --> src/core/sys/unix/bpf.rs:303:22
[INFO] [stdout]     |
[INFO] [stdout] 303 |     syscall(SYS_BPF, cmd, attr, size) as i32
[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 `BpfCmd`.
[INFO] [stdout]    --> src/core/sys/unix/bpf.rs:303:22
[INFO] [stdout]     |
[INFO] [stdout] 303 |     syscall(SYS_BPF, cmd, attr, size) as i32
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `BpfCmd` does not implement `VaArgSafe`
[INFO] [stdout]    --> src/core/sys/unix/bpf.rs:303:22
[INFO] [stdout]     |
[INFO] [stdout] 303 |     syscall(SYS_BPF, cmd, attr, size) as i32
[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] error: could not compile `xsio` (lib) due to 1 previous error; 9 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `xsio` (lib test) due to 1 previous error; 9 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b2f728f516284ddc74731fc53864f96c38706a6e17c2e7a5e166edcd25636334", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2f728f516284ddc74731fc53864f96c38706a6e17c2e7a5e166edcd25636334", kill_on_drop: false }`
[INFO] [stdout] b2f728f516284ddc74731fc53864f96c38706a6e17c2e7a5e166edcd25636334
