[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#db870ea71b6dcc7a91b999420b88f41d3cdd13e1 for pr-75192
[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 db870ea71b6dcc7a91b999420b88f41d3cdd13e1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "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" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e22d05c0834b14b7053086bd4437e11e2cf90b5ba6168de5007fa5112d453e1c
[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" "e22d05c0834b14b7053086bd4437e11e2cf90b5ba6168de5007fa5112d453e1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e22d05c0834b14b7053086bd4437e11e2cf90b5ba6168de5007fa5112d453e1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e22d05c0834b14b7053086bd4437e11e2cf90b5ba6168de5007fa5112d453e1c", kill_on_drop: false }`
[INFO] [stdout] e22d05c0834b14b7053086bd4437e11e2cf90b5ba6168de5007fa5112d453e1c
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b682d7fc85ef99f3d28c6460cb3aef9ddee1b34ee2617b8fb7c5cf7ec6b6281
[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" "5b682d7fc85ef99f3d28c6460cb3aef9ddee1b34ee2617b8fb7c5cf7ec6b6281", 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: 1 warning emitted
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "5b682d7fc85ef99f3d28c6460cb3aef9ddee1b34ee2617b8fb7c5cf7ec6b6281", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b682d7fc85ef99f3d28c6460cb3aef9ddee1b34ee2617b8fb7c5cf7ec6b6281", kill_on_drop: false }`
[INFO] [stdout] 5b682d7fc85ef99f3d28c6460cb3aef9ddee1b34ee2617b8fb7c5cf7ec6b6281