[INFO] cloning repository https://github.com/jgallagher/rustc-varargs
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallagher%2Frustc-varargs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c8312bc63613ff86b6f1c7517c68d9163b095b0
[INFO] checking jgallagher/rustc-varargs against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallagher%2Frustc-varargs" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[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-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jgallagher/rustc-varargs on toolchain 66388cc165a6c4ac98c074dc9f0281ff23528c55
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jgallagher/rustc-varargs 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" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gcc v0.3.26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be54c2ce9f01f363e489e3818f7ac8841fc43bf62a6416dafb324e1c2382c2c6
[INFO] running `Command { std: "docker" "start" "-a" "be54c2ce9f01f363e489e3818f7ac8841fc43bf62a6416dafb324e1c2382c2c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be54c2ce9f01f363e489e3818f7ac8841fc43bf62a6416dafb324e1c2382c2c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be54c2ce9f01f363e489e3818f7ac8841fc43bf62a6416dafb324e1c2382c2c6", kill_on_drop: false }`
[INFO] [stdout] be54c2ce9f01f363e489e3818f7ac8841fc43bf62a6416dafb324e1c2382c2c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a26cafd3cf25ce396b05dcb2106bcd7c46ec0244d4ffd014bcdd9960442ed11
[INFO] running `Command { std: "docker" "start" "-a" "1a26cafd3cf25ce396b05dcb2106bcd7c46ec0244d4ffd014bcdd9960442ed11", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling gcc v0.3.26
[INFO] [stderr]    Compiling varargs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `varargs` (bin "varargs") due to 1 previous error
[INFO] [stdout] error[E0617]: can't pass a function item to a variadic function
[INFO] [stdout]   --> src/main.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     unsafe { foobar(1, callback, 3u64); }
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: a function item is zero-sized and needs to be cast into a function pointer to be used in FFI
[INFO] [stdout]    = note: for more information on function items, visit https://doc.rust-lang.org/reference/types/function-item.html
[INFO] [stdout] help: use a function pointer instead
[INFO] [stdout]    |
[INFO] [stdout] 11 |     unsafe { foobar(1, callback as extern "C" fn(), 3u64); }
[INFO] [stdout]    |                                 ++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0617`.
[INFO] [stdout] 
[INFO] [stdout] error[E0617]: can't pass a function item to a variadic function
[INFO] [stdout]   --> src/main.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     unsafe { foobar(1, callback, 3u64); }
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: a function item is zero-sized and needs to be cast into a function pointer to be used in FFI
[INFO] [stdout]    = note: for more information on function items, visit https://doc.rust-lang.org/reference/types/function-item.html
[INFO] [stdout] help: use a function pointer instead
[INFO] [stdout]    |
[INFO] [stdout] 11 |     unsafe { foobar(1, callback as extern "C" fn(), 3u64); }
[INFO] [stdout]    |                                 ++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0617`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `varargs` (bin "varargs" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "1a26cafd3cf25ce396b05dcb2106bcd7c46ec0244d4ffd014bcdd9960442ed11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a26cafd3cf25ce396b05dcb2106bcd7c46ec0244d4ffd014bcdd9960442ed11", kill_on_drop: false }`
[INFO] [stdout] 1a26cafd3cf25ce396b05dcb2106bcd7c46ec0244d4ffd014bcdd9960442ed11