[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] testing jgallagher/rustc-varargs against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallagher%2Frustc-varargs" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[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 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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 `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8a5aba08b240de2f4af88bde1049b2bb187f1a70af86140f37d2db5efbc7b65
[INFO] running `Command { std: "docker" "start" "-a" "e8a5aba08b240de2f4af88bde1049b2bb187f1a70af86140f37d2db5efbc7b65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8a5aba08b240de2f4af88bde1049b2bb187f1a70af86140f37d2db5efbc7b65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8a5aba08b240de2f4af88bde1049b2bb187f1a70af86140f37d2db5efbc7b65", kill_on_drop: false }`
[INFO] [stdout] e8a5aba08b240de2f4af88bde1049b2bb187f1a70af86140f37d2db5efbc7b65
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d2d6a2eb28e44b8e25faf7ddb08d5e209d649b2573e123d5c81f54101bd41f8
[INFO] running `Command { std: "docker" "start" "-a" "6d2d6a2eb28e44b8e25faf7ddb08d5e209d649b2573e123d5c81f54101bd41f8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling varargs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0617]: can't pass `extern "C" fn() {callback}` to variadic function
[INFO] [stdout]   --> src/main.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     unsafe { foobar(1, callback, 3u64); }
[INFO] [stdout]    |                        ^^^^^^^^ help: cast the value to `extern "C" fn()`: `callback as extern "C" fn()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[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` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "6d2d6a2eb28e44b8e25faf7ddb08d5e209d649b2573e123d5c81f54101bd41f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d2d6a2eb28e44b8e25faf7ddb08d5e209d649b2573e123d5c81f54101bd41f8", kill_on_drop: false }`
[INFO] [stdout] 6d2d6a2eb28e44b8e25faf7ddb08d5e209d649b2573e123d5c81f54101bd41f8