[INFO] cloning repository https://github.com/jmg292/crypto_interop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmg292/crypto_interop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmg292%2Fcrypto_interop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmg292%2Fcrypto_interop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c79d1647434d814760119a8a67d727e6fea753a
[INFO] testing jmg292/crypto_interop against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmg292%2Fcrypto_interop" "/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/jmg292/crypto_interop on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jmg292/crypto_interop
[INFO] finished tweaking git repo https://github.com/jmg292/crypto_interop
[INFO] tweaked toml for git repo https://github.com/jmg292/crypto_interop written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jmg292/crypto_interop already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 49a4e16ada6897d71c734731ed0542216a2e2a882bb3b41d1e0efde061f3b556
[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" "49a4e16ada6897d71c734731ed0542216a2e2a882bb3b41d1e0efde061f3b556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49a4e16ada6897d71c734731ed0542216a2e2a882bb3b41d1e0efde061f3b556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49a4e16ada6897d71c734731ed0542216a2e2a882bb3b41d1e0efde061f3b556", kill_on_drop: false }`
[INFO] [stdout] 49a4e16ada6897d71c734731ed0542216a2e2a882bb3b41d1e0efde061f3b556
[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=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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee68f7e7b58872ea7b454e59203acd75cf6451c9e4659711d0f3fde9a57d6638
[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" "ee68f7e7b58872ea7b454e59203acd75cf6451c9e4659711d0f3fde9a57d6638", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling subtle v1.0.0
[INFO] [stderr]    Compiling subtle v2.2.3
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling zeroize v1.1.0
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling generic-array v0.14.3
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_hc v0.2.0
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling crypto-mac v0.7.0
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling universal-hash v0.4.0
[INFO] [stderr]    Compiling stream-cipher v0.4.1
[INFO] [stderr]    Compiling aead v0.3.2
[INFO] [stderr]    Compiling hmac v0.7.1
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling poly1305 v0.6.0
[INFO] [stderr]    Compiling chacha20 v0.4.3
[INFO] [stderr]    Compiling hmac-drbg v0.2.0
[INFO] [stderr]    Compiling global v0.4.3
[INFO] [stderr]    Compiling chacha20poly1305 v0.5.1
[INFO] [stderr]    Compiling libsecp256k1 v0.3.5
[INFO] [stderr]    Compiling crypto_interop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `from_local_identity`
[INFO] [stdout]    --> src/authentication.rs:137:12
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn from_local_identity(local_identity: LocalIdentity) -> Handshake {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_private_key`
[INFO] [stdout]   --> src/messaging/wrapper.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn new_private_key() -> SecretKey {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unwrap_public_key_string`
[INFO] [stdout]   --> src/messaging/wrapper.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn unwrap_public_key_string(public_key_string: &str) -> Result<PublicKey, ()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rotate_private_key`
[INFO] [stdout]   --> src/messaging/wrapper.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn rotate_private_key(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `exchange_keys`
[INFO] [stdout]   --> src/messaging/wrapper.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn exchange_keys(&mut self, peer_public_key_string: &str) -> Result<(), ()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_public_key`
[INFO] [stdout]   --> src/messaging/wrapper.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn get_public_key(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_message_count`
[INFO] [stdout]    --> src/messaging/wrapper.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn get_message_count(&self) -> u32 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_finalized_handshake`
[INFO] [stdout]    --> src/messaging/wrapper.rs:166:12
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn from_finalized_handshake(finalized_handshake: &Handshake) -> Result<MessageWrapper, ()> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_from_file`
[INFO] [stdout]    --> src/identity/objects.rs:169:8
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn new_from_file(file_path: &str) -> Result<LocalIdentity, ()> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `save_to_file`
[INFO] [stdout]    --> src/identity/objects.rs:186:12
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn save_to_file(&self, file_path: &Path) -> Result<bool, ()> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_file`
[INFO] [stdout]    --> src/identity/objects.rs:210:12
[INFO] [stdout]     |
[INFO] [stdout] 210 |     pub fn from_file(file_path: &str) -> LocalIdentity {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_key_ref`
[INFO] [stdout]   --> src/identity/authorized_hosts.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn get_key_ref(&self, fingerprint: &str) -> &RemoteIdentity {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `authorize_key`
[INFO] [stdout]   --> src/identity/authorized_hosts.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn authorize_key(&mut self, remote_key: RemoteIdentity) -> Result<(), ()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `authorize_key_string`
[INFO] [stdout]   --> src/identity/authorized_hosts.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn authorize_key_string(&mut self, remote_key_string: &str) -> Result<(), ()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load`
[INFO] [stdout]   --> src/identity/authorized_hosts.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn load(folder_path: &str) -> Result<AuthorizedHosts, ()> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:19:35
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub extern fn init(identity_file: &str, authorized_keys_folder: &str) {
[INFO] [stdout]    |                                   ^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]    = help: consider using `*const u8` and a length instead
[INFO] [stdout]    = note: string slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:19:65
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub extern fn init(identity_file: &str, authorized_keys_folder: &str) {
[INFO] [stdout]    |                                                                 ^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using `*const u8` and a length instead
[INFO] [stdout]    = note: string slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:27:42
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub extern fn save_public_key(file_path: &str) -> bool {
[INFO] [stdout]    |                                          ^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using `*const u8` and a length instead
[INFO] [stdout]    = note: string slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:36:34
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub extern fn get_challenge() -> [u8; 16] {
[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` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:41:49
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub extern fn get_challenge_response(challenge: &[u8]) -> [u8; 193] {
[INFO] [stdout]    |                                                 ^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8; 193]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:41:59
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub extern fn get_challenge_response(challenge: &[u8]) -> [u8; 193] {
[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` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:46:54
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub extern fn finalize_challenge(challenge_response: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stdout]    |                                                      ^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:46:76
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub extern fn finalize_challenge(challenge_response: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stdout]    |                                                                            ^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:66:32
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub extern fn encrypt(message: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stdout]    |                                ^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:66:54
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub extern fn encrypt(message: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:80:32
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub extern fn decrypt(message: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stdout]    |                                ^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:80:54
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub extern fn decrypt(message: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.72s
[INFO] running `Command { std: "docker" "inspect" "ee68f7e7b58872ea7b454e59203acd75cf6451c9e4659711d0f3fde9a57d6638", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee68f7e7b58872ea7b454e59203acd75cf6451c9e4659711d0f3fde9a57d6638", kill_on_drop: false }`
[INFO] [stdout] ee68f7e7b58872ea7b454e59203acd75cf6451c9e4659711d0f3fde9a57d6638
[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=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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--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] 180378c847527df29c3becd9b94a6abf93079c030b8d19803809c1812cbe06ee
[INFO] running `Command { std: "docker" "start" "-a" "180378c847527df29c3becd9b94a6abf93079c030b8d19803809c1812cbe06ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling crypto_interop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `from_local_identity`
[INFO] [stdout]    --> src/authentication.rs:137:12
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn from_local_identity(local_identity: LocalIdentity) -> Handshake {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_private_key`
[INFO] [stdout]   --> src/messaging/wrapper.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn new_private_key() -> SecretKey {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unwrap_public_key_string`
[INFO] [stdout]   --> src/messaging/wrapper.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn unwrap_public_key_string(public_key_string: &str) -> Result<PublicKey, ()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rotate_private_key`
[INFO] [stdout]   --> src/messaging/wrapper.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn rotate_private_key(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `exchange_keys`
[INFO] [stdout]   --> src/messaging/wrapper.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn exchange_keys(&mut self, peer_public_key_string: &str) -> Result<(), ()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_public_key`
[INFO] [stdout]   --> src/messaging/wrapper.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn get_public_key(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_message_count`
[INFO] [stdout]    --> src/messaging/wrapper.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn get_message_count(&self) -> u32 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_finalized_handshake`
[INFO] [stdout]    --> src/messaging/wrapper.rs:166:12
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn from_finalized_handshake(finalized_handshake: &Handshake) -> Result<MessageWrapper, ()> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_from_file`
[INFO] [stdout]    --> src/identity/objects.rs:169:8
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn new_from_file(file_path: &str) -> Result<LocalIdentity, ()> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `save_to_file`
[INFO] [stdout]    --> src/identity/objects.rs:186:12
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn save_to_file(&self, file_path: &Path) -> Result<bool, ()> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_file`
[INFO] [stdout]    --> src/identity/objects.rs:210:12
[INFO] [stdout]     |
[INFO] [stdout] 210 |     pub fn from_file(file_path: &str) -> LocalIdentity {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_key_ref`
[INFO] [stdout]   --> src/identity/authorized_hosts.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn get_key_ref(&self, fingerprint: &str) -> &RemoteIdentity {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `authorize_key`
[INFO] [stdout]   --> src/identity/authorized_hosts.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn authorize_key(&mut self, remote_key: RemoteIdentity) -> Result<(), ()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `authorize_key_string`
[INFO] [stdout]   --> src/identity/authorized_hosts.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn authorize_key_string(&mut self, remote_key_string: &str) -> Result<(), ()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load`
[INFO] [stdout]   --> src/identity/authorized_hosts.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn load(folder_path: &str) -> Result<AuthorizedHosts, ()> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:19:35
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub extern fn init(identity_file: &str, authorized_keys_folder: &str) {
[INFO] [stdout]    |                                   ^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]    = help: consider using `*const u8` and a length instead
[INFO] [stdout]    = note: string slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:19:65
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub extern fn init(identity_file: &str, authorized_keys_folder: &str) {
[INFO] [stdout]    |                                                                 ^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using `*const u8` and a length instead
[INFO] [stdout]    = note: string slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:27:42
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub extern fn save_public_key(file_path: &str) -> bool {
[INFO] [stdout]    |                                          ^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using `*const u8` and a length instead
[INFO] [stdout]    = note: string slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:36:34
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub extern fn get_challenge() -> [u8; 16] {
[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` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:41:49
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub extern fn get_challenge_response(challenge: &[u8]) -> [u8; 193] {
[INFO] [stdout]    |                                                 ^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8; 193]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:41:59
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub extern fn get_challenge_response(challenge: &[u8]) -> [u8; 193] {
[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` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:46:54
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub extern fn finalize_challenge(challenge_response: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stdout]    |                                                      ^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:46:76
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub extern fn finalize_challenge(challenge_response: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stdout]    |                                                                            ^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:66:32
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub extern fn encrypt(message: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stdout]    |                                ^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:66:54
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub extern fn encrypt(message: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:80:32
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub extern fn decrypt(message: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stdout]    |                                ^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:80:54
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub extern fn decrypt(message: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stdout]    |                                                      ^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "180378c847527df29c3becd9b94a6abf93079c030b8d19803809c1812cbe06ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "180378c847527df29c3becd9b94a6abf93079c030b8d19803809c1812cbe06ee", kill_on_drop: false }`
[INFO] [stdout] 180378c847527df29c3becd9b94a6abf93079c030b8d19803809c1812cbe06ee
[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=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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", 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] 0464e6d19fa220882b3b20c8b4fa8fc9c0793ff1be8dbb9568d18c6b25d44aaa
[INFO] running `Command { std: "docker" "start" "-a" "0464e6d19fa220882b3b20c8b4fa8fc9c0793ff1be8dbb9568d18c6b25d44aaa", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `from_local_identity`
[INFO] [stderr]    --> src/authentication.rs:137:12
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn from_local_identity(local_identity: LocalIdentity) -> Handshake {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_private_key`
[INFO] [stderr]   --> src/messaging/wrapper.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn new_private_key() -> SecretKey {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unwrap_public_key_string`
[INFO] [stderr]   --> src/messaging/wrapper.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn unwrap_public_key_string(public_key_string: &str) -> Result<PublicKey, ()> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `rotate_private_key`
[INFO] [stderr]   --> src/messaging/wrapper.rs:85:12
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn rotate_private_key(&mut self) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `exchange_keys`
[INFO] [stderr]   --> src/messaging/wrapper.rs:89:12
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn exchange_keys(&mut self, peer_public_key_string: &str) -> Result<(), ()> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_public_key`
[INFO] [stderr]   --> src/messaging/wrapper.rs:97:12
[INFO] [stderr]    |
[INFO] [stderr] 97 |     pub fn get_public_key(&self) -> String {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_message_count`
[INFO] [stderr]    --> src/messaging/wrapper.rs:102:12
[INFO] [stderr]     |
[INFO] [stderr] 102 |     pub fn get_message_count(&self) -> u32 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_finalized_handshake`
[INFO] [stderr]    --> src/messaging/wrapper.rs:166:12
[INFO] [stderr]     |
[INFO] [stderr] 166 |     pub fn from_finalized_handshake(finalized_handshake: &Handshake) -> Result<MessageWrapper, ()> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_from_file`
[INFO] [stderr]    --> src/identity/objects.rs:169:8
[INFO] [stderr]     |
[INFO] [stderr] 169 |     fn new_from_file(file_path: &str) -> Result<LocalIdentity, ()> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `save_to_file`
[INFO] [stderr]    --> src/identity/objects.rs:186:12
[INFO] [stderr]     |
[INFO] [stderr] 186 |     pub fn save_to_file(&self, file_path: &Path) -> Result<bool, ()> {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_file`
[INFO] [stderr]    --> src/identity/objects.rs:210:12
[INFO] [stderr]     |
[INFO] [stderr] 210 |     pub fn from_file(file_path: &str) -> LocalIdentity {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_key_ref`
[INFO] [stderr]   --> src/identity/authorized_hosts.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn get_key_ref(&self, fingerprint: &str) -> &RemoteIdentity {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `authorize_key`
[INFO] [stderr]   --> src/identity/authorized_hosts.rs:30:12
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn authorize_key(&mut self, remote_key: RemoteIdentity) -> Result<(), ()> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `authorize_key_string`
[INFO] [stderr]   --> src/identity/authorized_hosts.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn authorize_key_string(&mut self, remote_key_string: &str) -> Result<(), ()> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `load`
[INFO] [stderr]   --> src/identity/authorized_hosts.rs:73:12
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn load(folder_path: &str) -> Result<AuthorizedHosts, ()> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:19:35
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub extern fn init(identity_file: &str, authorized_keys_folder: &str) {
[INFO] [stderr]    |                                   ^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stderr]    = help: consider using `*const u8` and a length instead
[INFO] [stderr]    = note: string slices have no C equivalent
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:19:65
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub extern fn init(identity_file: &str, authorized_keys_folder: &str) {
[INFO] [stderr]    |                                                                 ^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using `*const u8` and a length instead
[INFO] [stderr]    = note: string slices have no C equivalent
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:27:42
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub extern fn save_public_key(file_path: &str) -> bool {
[INFO] [stderr]    |                                          ^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using `*const u8` and a length instead
[INFO] [stderr]    = note: string slices have no C equivalent
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:36:34
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub extern fn get_challenge() -> [u8; 16] {
[INFO] [stderr]    |                                  ^^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider passing a pointer to the array
[INFO] [stderr]    = note: passing raw arrays by value is not FFI-safe
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:41:49
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub extern fn get_challenge_response(challenge: &[u8]) -> [u8; 193] {
[INFO] [stderr]    |                                                 ^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a raw pointer instead
[INFO] [stderr]    = note: slices have no C equivalent
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `[u8; 193]`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:41:59
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub extern fn get_challenge_response(challenge: &[u8]) -> [u8; 193] {
[INFO] [stderr]    |                                                           ^^^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider passing a pointer to the array
[INFO] [stderr]    = note: passing raw arrays by value is not FFI-safe
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:46:54
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub extern fn finalize_challenge(challenge_response: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stderr]    |                                                      ^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a raw pointer instead
[INFO] [stderr]    = note: slices have no C equivalent
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:46:76
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub extern fn finalize_challenge(challenge_response: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stderr]    |                                                                            ^^^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a raw pointer instead
[INFO] [stderr]    = note: slices have no C equivalent
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:66:32
[INFO] [stderr]    |
[INFO] [stderr] 66 | pub extern fn encrypt(message: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stderr]    |                                ^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a raw pointer instead
[INFO] [stderr]    = note: slices have no C equivalent
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:66:54
[INFO] [stderr]    |
[INFO] [stderr] 66 | pub extern fn encrypt(message: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stderr]    |                                                      ^^^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a raw pointer instead
[INFO] [stderr]    = note: slices have no C equivalent
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:80:32
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub extern fn decrypt(message: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stderr]    |                                ^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a raw pointer instead
[INFO] [stderr]    = note: slices have no C equivalent
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `[u8]`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:80:54
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub extern fn decrypt(message: &[u8], output_buffer: &mut [u8]) -> bool {
[INFO] [stderr]    |                                                      ^^^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a raw pointer instead
[INFO] [stderr]    = note: slices have no C equivalent
[INFO] [stderr] 
[INFO] [stderr] warning: 27 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/crypto_interop-5ee0e425da0b74ea
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0464e6d19fa220882b3b20c8b4fa8fc9c0793ff1be8dbb9568d18c6b25d44aaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0464e6d19fa220882b3b20c8b4fa8fc9c0793ff1be8dbb9568d18c6b25d44aaa", kill_on_drop: false }`
[INFO] [stdout] 0464e6d19fa220882b3b20c8b4fa8fc9c0793ff1be8dbb9568d18c6b25d44aaa