[INFO] cloning repository https://github.com/dsgriffin/freefare-sys
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dsgriffin/freefare-sys" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdsgriffin%2Ffreefare-sys", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdsgriffin%2Ffreefare-sys'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4163cc10b30e0988acae3fc335709ae16cfa14f5
[INFO] building dsgriffin/freefare-sys against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdsgriffin%2Ffreefare-sys" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dsgriffin/freefare-sys on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dsgriffin/freefare-sys
[INFO] finished tweaking git repo https://github.com/dsgriffin/freefare-sys
[INFO] tweaked toml for git repo https://github.com/dsgriffin/freefare-sys written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/dsgriffin/freefare-sys already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a0244a88874838fcf10d6b15e02049d3fe8a2f2d84e044acd9f9df538bf9bb0
[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" "4a0244a88874838fcf10d6b15e02049d3fe8a2f2d84e044acd9f9df538bf9bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a0244a88874838fcf10d6b15e02049d3fe8a2f2d84e044acd9f9df538bf9bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a0244a88874838fcf10d6b15e02049d3fe8a2f2d84e044acd9f9df538bf9bb0", kill_on_drop: false }`
[INFO] [stdout] 4a0244a88874838fcf10d6b15e02049d3fe8a2f2d84e044acd9f9df538bf9bb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", 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] 725d1bab2a20760da6835d39c7fc94e3ddbdd2719d01f8a643d3551308115f18
[INFO] running `Command { std: "docker" "start" "-a" "725d1bab2a20760da6835d39c7fc94e3ddbdd2719d01f8a643d3551308115f18", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.17
[INFO] [stderr]    Compiling nfc-sys v0.1.5
[INFO] [stderr]    Compiling freefare-sys v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` block uses type `[u8; 4]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:290:15
[INFO] [stdout]     |
[INFO] [stdout] 290 |         data: MifareUltralightPage,
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:309:14
[INFO] [stdout]     |
[INFO] [stdout] 309 |         key: MifareClassicKey,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:332:15
[INFO] [stdout]     |
[INFO] [stdout] 332 |         data: MifareClassicBlock,
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:370:16
[INFO] [stdout]     |
[INFO] [stdout] 370 |         key_a: MifareClassicKey,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:376:16
[INFO] [stdout]     |
[INFO] [stdout] 376 |         key_b: MifareClassicKey,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:393:26
[INFO] [stdout]     |
[INFO] [stdout] 393 |         key_b_sector_00: MifareClassicKey,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:394:26
[INFO] [stdout]     |
[INFO] [stdout] 394 |         key_b_sector_10: MifareClassicKey,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:426:14
[INFO] [stdout]     |
[INFO] [stdout] 426 |         key: MifareClassicKey,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:435:14
[INFO] [stdout]     |
[INFO] [stdout] 435 |         key: MifareClassicKey,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "725d1bab2a20760da6835d39c7fc94e3ddbdd2719d01f8a643d3551308115f18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "725d1bab2a20760da6835d39c7fc94e3ddbdd2719d01f8a643d3551308115f18", kill_on_drop: false }`
[INFO] [stdout] 725d1bab2a20760da6835d39c7fc94e3ddbdd2719d01f8a643d3551308115f18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7a89b9e305268dbed7ff32e7a7889c24a55f22bd03d8813fac8f796e7421eaa
[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" "a7a89b9e305268dbed7ff32e7a7889c24a55f22bd03d8813fac8f796e7421eaa", kill_on_drop: false }`
[INFO] [stdout] warning: `extern` block uses type `[u8; 4]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:290:15
[INFO] [stdout]     |
[INFO] [stdout] 290 |         data: MifareUltralightPage,
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:309:14
[INFO] [stdout]     |
[INFO] [stdout] 309 |         key: MifareClassicKey,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:332:15
[INFO] [stdout]     |
[INFO] [stdout] 332 |         data: MifareClassicBlock,
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:370:16
[INFO] [stdout]     |
[INFO] [stdout] 370 |         key_a: MifareClassicKey,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling freefare-sys v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:376:16
[INFO] [stdout]     |
[INFO] [stdout] 376 |         key_b: MifareClassicKey,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:393:26
[INFO] [stdout]     |
[INFO] [stdout] 393 |         key_b_sector_00: MifareClassicKey,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:394:26
[INFO] [stdout]     |
[INFO] [stdout] 394 |         key_b_sector_10: MifareClassicKey,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:426:14
[INFO] [stdout]     |
[INFO] [stdout] 426 |         key: MifareClassicKey,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:435:14
[INFO] [stdout]     |
[INFO] [stdout] 435 |         key: MifareClassicKey,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 4]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:290:15
[INFO] [stdout]     |
[INFO] [stdout] 290 |         data: MifareUltralightPage,
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:309:14
[INFO] [stdout]     |
[INFO] [stdout] 309 |         key: MifareClassicKey,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:332:15
[INFO] [stdout]     |
[INFO] [stdout] 332 |         data: MifareClassicBlock,
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:370:16
[INFO] [stdout]     |
[INFO] [stdout] 370 |         key_a: MifareClassicKey,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:376:16
[INFO] [stdout]     |
[INFO] [stdout] 376 |         key_b: MifareClassicKey,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:393:26
[INFO] [stdout]     |
[INFO] [stdout] 393 |         key_b_sector_00: MifareClassicKey,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:394:26
[INFO] [stdout]     |
[INFO] [stdout] 394 |         key_b_sector_10: MifareClassicKey,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:426:14
[INFO] [stdout]     |
[INFO] [stdout] 426 |         key: MifareClassicKey,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:435:14
[INFO] [stdout]     |
[INFO] [stdout] 435 |         key: MifareClassicKey,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-Wl,--as-needed" "-L" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/freefare_sys-85c6653341993327.freefare_sys.qs1nyczq-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/freefare_sys-85c6653341993327.freefare_sys.qs1nyczq-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/freefare_sys-85c6653341993327.freefare_sys.qs1nyczq-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/freefare_sys-85c6653341993327.freefare_sys.qs1nyczq-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/freefare_sys-85c6653341993327.freefare_sys.qs1nyczq-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/freefare_sys-85c6653341993327.freefare_sys.qs1nyczq-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/freefare_sys-85c6653341993327.freefare_sys.qs1nyczq-cgu.6.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/freefare_sys-85c6653341993327" "/opt/rustwide/target/debug/deps/freefare_sys-85c6653341993327.1i8tc94rxrb1xgdt.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-lfreefare" "-Wl,-Bstatic" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libtest-e0d08a82dcb7da7b.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libterm-24036eb8e889985c.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgetopts-759d40b5d9a6a451.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunicode_width-7590543c881e6235.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_std-56b60793e4f96438.rlib" "/opt/rustwide/target/debug/deps/libnfc_sys-f57bfda5578db0ca.rlib" "/opt/rustwide/target/debug/deps/liblibc-55b203210d846acb.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-c6dddd3d354e6bea.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-c2ca47afdcc5e309.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-b47be2942017e108.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-20a1e49116ab0df9.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-25e09d9868291683.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-9c99fb6e5ca5159e.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-85040d7563599960.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-0e4f7587da8acf20.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7be0a6711ed15b5c.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-00672fabc4ff9c9d.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-72fe231ef0473d15.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-019d54ecc304b655.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-cc7d9343e4f608be.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-e41c6d24baeb2249.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-9849bb0fbad7f0f5.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-a1fd7734706d5518.rlib" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-c8ded1707ad10767.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-8b33f9cbbc9652fe.rlib" "-Wl,-Bdynamic" "-lnfc" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lfreefare
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `freefare-sys`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "a7a89b9e305268dbed7ff32e7a7889c24a55f22bd03d8813fac8f796e7421eaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7a89b9e305268dbed7ff32e7a7889c24a55f22bd03d8813fac8f796e7421eaa", kill_on_drop: false }`
[INFO] [stdout] a7a89b9e305268dbed7ff32e7a7889c24a55f22bd03d8813fac8f796e7421eaa
