[INFO] cloning repository https://github.com/bokutotu/rust_c_ffi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bokutotu/rust_c_ffi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbokutotu%2Frust_c_ffi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbokutotu%2Frust_c_ffi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78dbacb4aeff0bb08ecfad753a9566e64543cb3d
[INFO] checking bokutotu/rust_c_ffi against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbokutotu%2Frust_c_ffi" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bokutotu/rust_c_ffi on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bokutotu/rust_c_ffi
[INFO] finished tweaking git repo https://github.com/bokutotu/rust_c_ffi
[INFO] tweaked toml for git repo https://github.com/bokutotu/rust_c_ffi written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/bokutotu/rust_c_ffi already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shlex v1.0.0
[INFO] [stderr]   Downloaded bindgen v0.58.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "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] 0981354eded94880eccb905955d76de0220a8911666658149c74e5872b0f75d4
[INFO] running `Command { std: "docker" "start" "-a" "0981354eded94880eccb905955d76de0220a8911666658149c74e5872b0f75d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0981354eded94880eccb905955d76de0220a8911666658149c74e5872b0f75d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0981354eded94880eccb905955d76de0220a8911666658149c74e5872b0f75d4", kill_on_drop: false }`
[INFO] [stdout] 0981354eded94880eccb905955d76de0220a8911666658149c74e5872b0f75d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03a1dfbce5a0158aaf1db0f660385898a62553f57571444af43b2f62d622778d
[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" "03a1dfbce5a0158aaf1db0f660385898a62553f57571444af43b2f62d622778d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling bindgen v0.58.1
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clang-sys v1.2.0
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling regex v1.4.6
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling wrapper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/wrapper-40c5328411ff5979/out/dog.rs:3:635
[INFO] [stdout]   |
[INFO] [stdout] 3 | ...ert_eq ! (unsafe { & (* (:: std :: ptr :: null :: < Dog > ())) . _name as * const _ as usize } , 0usize , concat ! ("Offset of field: ...
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deref_nullptr)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/wrapper-40c5328411ff5979/out/dog.rs:3:827
[INFO] [stdout]   |
[INFO] [stdout] 3 | ...ert_eq ! (unsafe { & (* (:: std :: ptr :: null :: < Dog > ())) . _status as * const _ as usize } , 8usize , concat ! ("Offset of field...
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.78s
[INFO] running `Command { std: "docker" "inspect" "03a1dfbce5a0158aaf1db0f660385898a62553f57571444af43b2f62d622778d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03a1dfbce5a0158aaf1db0f660385898a62553f57571444af43b2f62d622778d", kill_on_drop: false }`
[INFO] [stdout] 03a1dfbce5a0158aaf1db0f660385898a62553f57571444af43b2f62d622778d