[INFO] cloning repository https://github.com/jgallagher/rustc-varargs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jgallagher/rustc-varargs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallagher%2Frustc-varargs"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallagher%2Frustc-varargs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1c8312bc63613ff86b6f1c7517c68d9163b095b0
[INFO] testing jgallagher/rustc-varargs against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallagher%2Frustc-varargs" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jgallagher/rustc-varargs on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jgallagher/rustc-varargs
[INFO] finished tweaking git repo https://github.com/jgallagher/rustc-varargs
[INFO] tweaked toml for git repo https://github.com/jgallagher/rustc-varargs written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/jgallagher/rustc-varargs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-9/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a3b566be80c206926dc9e385be7c34fdc64af31ca34602a55679a7e2da4ae1cf
[INFO] running `"docker" "start" "-a" "a3b566be80c206926dc9e385be7c34fdc64af31ca34602a55679a7e2da4ae1cf"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling varargs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'gcc::Config': gcc::Config has been renamed to gcc::Build
[INFO] [stderr]  --> build.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     gcc::Config::new()
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'gcc::Build::new': crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stderr]  --> build.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     gcc::Config::new()
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: src/foobar.c: In function 'foobar':
[INFO] [stderr] warning: src/foobar.c:12:5: warning: second parameter of 'va_start' not last named argument [-Wvarargs]
[INFO] [stderr] warning:    12 |     va_start(ap, 2);
[INFO] [stderr] warning:       |     ^~~~~~~~
[INFO] [stderr] error[E0617]: can't pass `extern "C" fn() {main::callback}` to variadic function
[INFO] [stderr]   --> src/main.rs:11:24
[INFO] [stderr]    |
[INFO] [stderr] 11 |     unsafe { foobar(1, callback, 3u64); }
[INFO] [stderr]    |                        ^^^^^^^^ help: cast the value to `extern "C" fn()`: `callback as extern "C" fn()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0617`.
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: src/foobar.c: In function 'foobar':
[INFO] [stderr] warning: src/foobar.c:12:5: warning: second parameter of 'va_start' not last named argument [-Wvarargs]
[INFO] [stderr] warning:    12 |     va_start(ap, 2);
[INFO] [stderr] warning:       |     ^~~~~~~~
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `varargs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a3b566be80c206926dc9e385be7c34fdc64af31ca34602a55679a7e2da4ae1cf"`
[INFO] running `"docker" "rm" "-f" "a3b566be80c206926dc9e385be7c34fdc64af31ca34602a55679a7e2da4ae1cf"`
[INFO] [stdout] a3b566be80c206926dc9e385be7c34fdc64af31ca34602a55679a7e2da4ae1cf