[INFO] cloning repository https://github.com/elihugarret/tuple-luajit-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elihugarret/tuple-luajit-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felihugarret%2Ftuple-luajit-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felihugarret%2Ftuple-luajit-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8a115e794ef82ba945ec285219b28070112d9dc7
[INFO] checking elihugarret/tuple-luajit-example against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felihugarret%2Ftuple-luajit-example" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elihugarret/tuple-luajit-example on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/elihugarret/tuple-luajit-example
[INFO] finished tweaking git repo https://github.com/elihugarret/tuple-luajit-example
[INFO] tweaked toml for git repo https://github.com/elihugarret/tuple-luajit-example written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/elihugarret/tuple-luajit-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a4b01e36609694475885946b4bb922130c11b6607d55c1bb43f7d06516f91fe0
[INFO] running `Command { std: "docker" "start" "-a" "a4b01e36609694475885946b4bb922130c11b6607d55c1bb43f7d06516f91fe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4b01e36609694475885946b4bb922130c11b6607d55c1bb43f7d06516f91fe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4b01e36609694475885946b4bb922130c11b6607d55c1bb43f7d06516f91fe0", kill_on_drop: false }`
[INFO] [stdout] a4b01e36609694475885946b4bb922130c11b6607d55c1bb43f7d06516f91fe0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cf0ea824e4e06566394bd58e71173ce17628e8ab97043dcf1fe698564b2d4f0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2cf0ea824e4e06566394bd58e71173ce17628e8ab97043dcf1fe698564b2d4f0", kill_on_drop: false }`
[INFO] [stderr]     Checking ownership v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `(*const i8, u32, u32)`, which is not FFI-safe
[INFO] [stdout]  --> src/lib.rs:5:69
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub extern "C" fn return_tuple(s: *const c_char, x: u32, y: u32) -> (*const c_char, u32, u32) {
[INFO] [stdout]   |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]   = help: consider using a struct instead
[INFO] [stdout]   = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `(*const i8, u32, u32)`, which is not FFI-safe
[INFO] [stdout]  --> src/lib.rs:5:69
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub extern "C" fn return_tuple(s: *const c_char, x: u32, y: u32) -> (*const c_char, u32, u32) {
[INFO] [stdout]   |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]   = help: consider using a struct instead
[INFO] [stdout]   = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "2cf0ea824e4e06566394bd58e71173ce17628e8ab97043dcf1fe698564b2d4f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cf0ea824e4e06566394bd58e71173ce17628e8ab97043dcf1fe698564b2d4f0", kill_on_drop: false }`
[INFO] [stdout] 2cf0ea824e4e06566394bd58e71173ce17628e8ab97043dcf1fe698564b2d4f0