[INFO] cloning repository https://github.com/BlackbirdHQ/ublox-cellular-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BlackbirdHQ/ublox-cellular-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlackbirdHQ%2Fublox-cellular-rs"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlackbirdHQ%2Fublox-cellular-rs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3f6757862e941ce9d151d28d7c292be55408606d
[INFO] testing BlackbirdHQ/ublox-cellular-rs against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlackbirdHQ%2Fublox-cellular-rs" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BlackbirdHQ/ublox-cellular-rs on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/BlackbirdHQ/ublox-cellular-rs
[INFO] finished tweaking git repo https://github.com/BlackbirdHQ/ublox-cellular-rs
[INFO] tweaked toml for git repo https://github.com/BlackbirdHQ/ublox-cellular-rs written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/BlackbirdHQ/ublox-cellular-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating git repository `https://github.com/BlackbirdHQ/atat`
[INFO] [stderr]     Updating git repository `https://github.com/thejpster/embedded-nal`
[INFO] [stderr]     Updating git repository `https://github.com/BlackbirdHQ/mqttrust`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mqttrs v0.3.0
[INFO] [stderr]   Downloaded no-std-net v0.3.0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f0e524248c686e234af55bdd12661119e485be21d10951163bc5ec95a71f320b
[INFO] running `"docker" "start" "-a" "f0e524248c686e234af55bdd12661119e485be21d10951163bc5ec95a71f320b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling heapless v0.5.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.14
[INFO] [stderr]    Compiling ufmt-write v0.1.0
[INFO] [stderr]    Compiling nb v0.1.2
[INFO] [stderr]    Compiling hex v0.4.2
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling embedded-hal v0.2.3
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling generic-array v0.13.2
[INFO] [stderr]    Compiling hash32 v0.1.1
[INFO] [stderr]    Compiling as-slice v0.1.3
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]    Compiling ufmt-macros v0.1.1
[INFO] [stderr]    Compiling serde_repr v0.1.5
[INFO] [stderr]    Compiling ufmt v0.1.0
[INFO] [stderr]    Compiling no-std-net v0.3.0
[INFO] [stderr]    Compiling embedded-nal v0.1.0 (https://github.com/thejpster/embedded-nal#f8bb7d76)
[INFO] [stderr]    Compiling serde_at v0.3.0 (https://github.com/BlackbirdHQ/atat#be343ed8)
[INFO] [stderr]    Compiling atat_derive v0.3.0 (https://github.com/BlackbirdHQ/atat#be343ed8)
[INFO] [stderr]    Compiling atat v0.3.0 (https://github.com/BlackbirdHQ/atat#be343ed8)
[INFO] [stderr]    Compiling ublox-cellular-rs v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `super::types::*`
[INFO] [stderr]  --> src/command/dns/responses.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use super::types::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `types::*`
[INFO] [stderr]   --> src/command/dns/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use types::*;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/client.rs:154:13
[INFO] [stderr]     |
[INFO] [stderr] 152 |               return Err(Error::_Unknown);
[INFO] [stderr]     |               --------------------------- any code following this expression is unreachable
[INFO] [stderr] 153 | 
[INFO] [stderr] 154 | /             self.send_internal(
[INFO] [stderr] 155 | |                 &SetDataRate {
[INFO] [stderr] 156 | |                     rate: BaudRate::B115200,
[INFO] [stderr] 157 | |                 },
[INFO] [stderr] 158 | |                 true,
[INFO] [stderr] 159 | |             )?;
[INFO] [stderr]     | |_______________^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rst`
[INFO] [stderr]    --> src/client.rs:132:25
[INFO] [stderr]     |
[INFO] [stderr] 132 |             if let Some(ref rst) = self.config.rst_pin {
[INFO] [stderr]     |                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rst`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dtr`
[INFO] [stderr]    --> src/client.rs:253:21
[INFO] [stderr]     |
[INFO] [stderr] 253 |         if let Some(ref dtr) = self.config.dtr_pin {
[INFO] [stderr]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dtr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `enable`
[INFO] [stderr]    --> src/client.rs:252:30
[INFO] [stderr]     |
[INFO] [stderr] 252 |     fn low_power_mode(&self, enable: bool) -> Result<(), atat::Error> {
[INFO] [stderr]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_enable`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]    --> src/client.rs:318:24
[INFO] [stderr]     |
[INFO] [stderr] 318 |                     Ok(bytes) => {
[INFO] [stderr]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/client.rs:322:25
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     Err(e) => {
[INFO] [stderr]     |                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/client.rs:399:24
[INFO] [stderr]     |
[INFO] [stderr] 399 |             if let Err(e) = self.handle_urcs() {
[INFO] [stderr]     |                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `write_at`
[INFO] [stderr]    --> src/socket/ring_buffer.rs:187:13
[INFO] [stderr]     |
[INFO] [stderr] 187 |         let write_at = self.get_idx(self.length);
[INFO] [stderr]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_write_at`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/socket/ring_buffer.rs:216:22
[INFO] [stderr]     |
[INFO] [stderr] 216 |         let (size_1, data) = self.enqueue_many_with(|buf| {
[INFO] [stderr]     |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/socket/tcp.rs:455:14
[INFO] [stderr]     |
[INFO] [stderr] 455 |         let (size, result) = f(&mut self.rx_buffer);
[INFO] [stderr]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/socket/udp.rs:122:14
[INFO] [stderr]     |
[INFO] [stderr] 122 |         let (size, result) = f(&mut self.rx_buffer);
[INFO] [stderr]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_state`
[INFO] [stderr]    --> src/client.rs:125:19
[INFO] [stderr]     |
[INFO] [stderr] 125 |     pub(crate) fn get_state(&self) -> Result<State, Error> {
[INFO] [stderr]     |                   ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `meta_mut`
[INFO] [stderr]    --> src/socket/mod.rs:123:19
[INFO] [stderr]     |
[INFO] [stderr] 123 |     pub(crate) fn meta_mut(&mut self) -> &mut SocketMeta {
[INFO] [stderr]     |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `core::result::Result` that must be used
[INFO] [stderr]    --> src/socket/ring_buffer.rs:218:13
[INFO] [stderr]     |
[INFO] [stderr] 218 |             buf.extend_from_slice(&data[..size]);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 07s
[INFO] running `"docker" "inspect" "f0e524248c686e234af55bdd12661119e485be21d10951163bc5ec95a71f320b"`
[INFO] running `"docker" "rm" "-f" "f0e524248c686e234af55bdd12661119e485be21d10951163bc5ec95a71f320b"`
[INFO] [stdout] f0e524248c686e234af55bdd12661119e485be21d10951163bc5ec95a71f320b
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 79010bb26dacb8d8f88f44002e5fe30ff7329182ccbb79fad0aa7a4cd030a7a5
[INFO] running `"docker" "start" "-a" "79010bb26dacb8d8f88f44002e5fe30ff7329182ccbb79fad0aa7a4cd030a7a5"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling bytes v0.5.4
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr] warning: unused import: `super::types::*`
[INFO] [stderr]  --> src/command/dns/responses.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use super::types::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `types::*`
[INFO] [stderr]   --> src/command/dns/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use types::*;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/client.rs:154:13
[INFO] [stderr]     |
[INFO] [stderr] 152 |               return Err(Error::_Unknown);
[INFO] [stderr]     |               --------------------------- any code following this expression is unreachable
[INFO] [stderr] 153 | 
[INFO] [stderr] 154 | /             self.send_internal(
[INFO] [stderr] 155 | |                 &SetDataRate {
[INFO] [stderr] 156 | |                     rate: BaudRate::B115200,
[INFO] [stderr] 157 | |                 },
[INFO] [stderr] 158 | |                 true,
[INFO] [stderr] 159 | |             )?;
[INFO] [stderr]     | |_______________^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rst`
[INFO] [stderr]    --> src/client.rs:132:25
[INFO] [stderr]     |
[INFO] [stderr] 132 |             if let Some(ref rst) = self.config.rst_pin {
[INFO] [stderr]     |                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rst`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dtr`
[INFO] [stderr]    --> src/client.rs:253:21
[INFO] [stderr]     |
[INFO] [stderr] 253 |         if let Some(ref dtr) = self.config.dtr_pin {
[INFO] [stderr]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dtr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `enable`
[INFO] [stderr]    --> src/client.rs:252:30
[INFO] [stderr]     |
[INFO] [stderr] 252 |     fn low_power_mode(&self, enable: bool) -> Result<(), atat::Error> {
[INFO] [stderr]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_enable`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]    --> src/client.rs:318:24
[INFO] [stderr]     |
[INFO] [stderr] 318 |                     Ok(bytes) => {
[INFO] [stderr]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/client.rs:322:25
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     Err(e) => {
[INFO] [stderr]     |                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/client.rs:399:24
[INFO] [stderr]     |
[INFO] [stderr] 399 |             if let Err(e) = self.handle_urcs() {
[INFO] [stderr]     |                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `write_at`
[INFO] [stderr]    --> src/socket/ring_buffer.rs:187:13
[INFO] [stderr]     |
[INFO] [stderr] 187 |         let write_at = self.get_idx(self.length);
[INFO] [stderr]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_write_at`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/socket/ring_buffer.rs:216:22
[INFO] [stderr]     |
[INFO] [stderr] 216 |         let (size_1, data) = self.enqueue_many_with(|buf| {
[INFO] [stderr]     |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/socket/tcp.rs:455:14
[INFO] [stderr]     |
[INFO] [stderr] 455 |         let (size, result) = f(&mut self.rx_buffer);
[INFO] [stderr]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/socket/udp.rs:122:14
[INFO] [stderr]     |
[INFO] [stderr] 122 |         let (size, result) = f(&mut self.rx_buffer);
[INFO] [stderr]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_state`
[INFO] [stderr]    --> src/client.rs:125:19
[INFO] [stderr]     |
[INFO] [stderr] 125 |     pub(crate) fn get_state(&self) -> Result<State, Error> {
[INFO] [stderr]     |                   ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `meta_mut`
[INFO] [stderr]    --> src/socket/mod.rs:123:19
[INFO] [stderr]     |
[INFO] [stderr] 123 |     pub(crate) fn meta_mut(&mut self) -> &mut SocketMeta {
[INFO] [stderr]     |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `core::result::Result` that must be used
[INFO] [stderr]    --> src/socket/ring_buffer.rs:218:13
[INFO] [stderr]     |
[INFO] [stderr] 218 |             buf.extend_from_slice(&data[..size]);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling mqttrs v0.3.0
[INFO] [stderr]    Compiling mqttrust v0.0.1 (https://github.com/BlackbirdHQ/mqttrust#0355a75f)
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling ioctl-rs v0.1.6
[INFO] [stderr]    Compiling serial-core v0.4.0
[INFO] [stderr]    Compiling termios v0.2.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling libudev v0.2.0
[INFO] [stderr]    Compiling serial-unix v0.4.0
[INFO] [stderr]    Compiling regex v1.3.6
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling i2cdev v0.4.4
[INFO] [stderr]    Compiling sysfs_gpio v0.5.4
[INFO] [stderr]    Compiling spidev v0.4.0
[INFO] [stderr]    Compiling serialport v3.3.0
[INFO] [stderr]    Compiling linux-embedded-hal v0.3.0
[INFO] [stderr]    Compiling ublox-cellular-rs v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `wrote`
[INFO] [stderr]    --> examples/linux.rs:112:17
[INFO] [stderr]     |
[INFO] [stderr] 112 |             let wrote = <GSMClient<_, _, _> as TcpStack>::write(
[INFO] [stderr]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_wrote`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `publish`
[INFO] [stderr]    --> examples/linux_mqtt.rs:154:42
[INFO] [stderr]     |
[INFO] [stderr] 154 |                 Ok(Notification::Publish(publish)) => {
[INFO] [stderr]     |                                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_publish`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::types::*`
[INFO] [stderr]  --> src/command/dns/responses.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use super::types::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `types::*`
[INFO] [stderr]   --> src/command/dns/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use types::*;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/client.rs:154:13
[INFO] [stderr]     |
[INFO] [stderr] 152 |               return Err(Error::_Unknown);
[INFO] [stderr]     |               --------------------------- any code following this expression is unreachable
[INFO] [stderr] 153 | 
[INFO] [stderr] 154 | /             self.send_internal(
[INFO] [stderr] 155 | |                 &SetDataRate {
[INFO] [stderr] 156 | |                     rate: BaudRate::B115200,
[INFO] [stderr] 157 | |                 },
[INFO] [stderr] 158 | |                 true,
[INFO] [stderr] 159 | |             )?;
[INFO] [stderr]     | |_______________^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rst`
[INFO] [stderr]    --> src/client.rs:132:25
[INFO] [stderr]     |
[INFO] [stderr] 132 |             if let Some(ref rst) = self.config.rst_pin {
[INFO] [stderr]     |                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rst`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dtr`
[INFO] [stderr]    --> src/client.rs:253:21
[INFO] [stderr]     |
[INFO] [stderr] 253 |         if let Some(ref dtr) = self.config.dtr_pin {
[INFO] [stderr]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dtr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `enable`
[INFO] [stderr]    --> src/client.rs:252:30
[INFO] [stderr]     |
[INFO] [stderr] 252 |     fn low_power_mode(&self, enable: bool) -> Result<(), atat::Error> {
[INFO] [stderr]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_enable`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]    --> src/client.rs:318:24
[INFO] [stderr]     |
[INFO] [stderr] 318 |                     Ok(bytes) => {
[INFO] [stderr]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/client.rs:322:25
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     Err(e) => {
[INFO] [stderr]     |                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/client.rs:399:24
[INFO] [stderr]     |
[INFO] [stderr] 399 |             if let Err(e) = self.handle_urcs() {
[INFO] [stderr]     |                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `write_at`
[INFO] [stderr]    --> src/socket/ring_buffer.rs:187:13
[INFO] [stderr]     |
[INFO] [stderr] 187 |         let write_at = self.get_idx(self.length);
[INFO] [stderr]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_write_at`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/socket/ring_buffer.rs:216:22
[INFO] [stderr]     |
[INFO] [stderr] 216 |         let (size_1, data) = self.enqueue_many_with(|buf| {
[INFO] [stderr]     |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/socket/tcp.rs:455:14
[INFO] [stderr]     |
[INFO] [stderr] 455 |         let (size, result) = f(&mut self.rx_buffer);
[INFO] [stderr]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/socket/udp.rs:122:14
[INFO] [stderr]     |
[INFO] [stderr] 122 |         let (size, result) = f(&mut self.rx_buffer);
[INFO] [stderr]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_state`
[INFO] [stderr]    --> src/client.rs:125:19
[INFO] [stderr]     |
[INFO] [stderr] 125 |     pub(crate) fn get_state(&self) -> Result<State, Error> {
[INFO] [stderr]     |                   ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `meta_mut`
[INFO] [stderr]    --> src/socket/mod.rs:123:19
[INFO] [stderr]     |
[INFO] [stderr] 123 |     pub(crate) fn meta_mut(&mut self) -> &mut SocketMeta {
[INFO] [stderr]     |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `core::result::Result` that must be used
[INFO] [stderr]    --> src/socket/ring_buffer.rs:218:13
[INFO] [stderr]     |
[INFO] [stderr] 218 |             buf.extend_from_slice(&data[..size]);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 40.90s
[INFO] running `"docker" "inspect" "79010bb26dacb8d8f88f44002e5fe30ff7329182ccbb79fad0aa7a4cd030a7a5"`
[INFO] running `"docker" "rm" "-f" "79010bb26dacb8d8f88f44002e5fe30ff7329182ccbb79fad0aa7a4cd030a7a5"`
[INFO] [stdout] 79010bb26dacb8d8f88f44002e5fe30ff7329182ccbb79fad0aa7a4cd030a7a5
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9c88894f8954514c9a86d77f3fd0cc6712b68e69b6f48cdc874e6b561958d087
[INFO] running `"docker" "start" "-a" "9c88894f8954514c9a86d77f3fd0cc6712b68e69b6f48cdc874e6b561958d087"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `super::types::*`
[INFO] [stderr]  --> src/command/dns/responses.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use super::types::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `types::*`
[INFO] [stderr]   --> src/command/dns/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use types::*;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/client.rs:154:13
[INFO] [stderr]     |
[INFO] [stderr] 152 |               return Err(Error::_Unknown);
[INFO] [stderr]     |               --------------------------- any code following this expression is unreachable
[INFO] [stderr] 153 | 
[INFO] [stderr] 154 | /             self.send_internal(
[INFO] [stderr] 155 | |                 &SetDataRate {
[INFO] [stderr] 156 | |                     rate: BaudRate::B115200,
[INFO] [stderr] 157 | |                 },
[INFO] [stderr] 158 | |                 true,
[INFO] [stderr] 159 | |             )?;
[INFO] [stderr]     | |_______________^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rst`
[INFO] [stderr]    --> src/client.rs:132:25
[INFO] [stderr]     |
[INFO] [stderr] 132 |             if let Some(ref rst) = self.config.rst_pin {
[INFO] [stderr]     |                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rst`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dtr`
[INFO] [stderr]    --> src/client.rs:253:21
[INFO] [stderr]     |
[INFO] [stderr] 253 |         if let Some(ref dtr) = self.config.dtr_pin {
[INFO] [stderr]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dtr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `enable`
[INFO] [stderr]    --> src/client.rs:252:30
[INFO] [stderr]     |
[INFO] [stderr] 252 |     fn low_power_mode(&self, enable: bool) -> Result<(), atat::Error> {
[INFO] [stderr]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_enable`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]    --> src/client.rs:318:24
[INFO] [stderr]     |
[INFO] [stderr] 318 |                     Ok(bytes) => {
[INFO] [stderr]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/client.rs:322:25
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     Err(e) => {
[INFO] [stderr]     |                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/client.rs:399:24
[INFO] [stderr]     |
[INFO] [stderr] 399 |             if let Err(e) = self.handle_urcs() {
[INFO] [stderr]     |                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `write_at`
[INFO] [stderr]    --> src/socket/ring_buffer.rs:187:13
[INFO] [stderr]     |
[INFO] [stderr] 187 |         let write_at = self.get_idx(self.length);
[INFO] [stderr]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_write_at`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/socket/ring_buffer.rs:216:22
[INFO] [stderr]     |
[INFO] [stderr] 216 |         let (size_1, data) = self.enqueue_many_with(|buf| {
[INFO] [stderr]     |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/socket/tcp.rs:455:14
[INFO] [stderr]     |
[INFO] [stderr] 455 |         let (size, result) = f(&mut self.rx_buffer);
[INFO] [stderr]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/socket/udp.rs:122:14
[INFO] [stderr]     |
[INFO] [stderr] 122 |         let (size, result) = f(&mut self.rx_buffer);
[INFO] [stderr]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_state`
[INFO] [stderr]    --> src/client.rs:125:19
[INFO] [stderr]     |
[INFO] [stderr] 125 |     pub(crate) fn get_state(&self) -> Result<State, Error> {
[INFO] [stderr]     |                   ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `meta_mut`
[INFO] [stderr]    --> src/socket/mod.rs:123:19
[INFO] [stderr]     |
[INFO] [stderr] 123 |     pub(crate) fn meta_mut(&mut self) -> &mut SocketMeta {
[INFO] [stderr]     |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `core::result::Result` that must be used
[INFO] [stderr]    --> src/socket/ring_buffer.rs:218:13
[INFO] [stderr]     |
[INFO] [stderr] 218 |             buf.extend_from_slice(&data[..size]);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::types::*`
[INFO] [stderr]  --> src/command/dns/responses.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use super::types::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `types::*`
[INFO] [stderr]   --> src/command/dns/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use types::*;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/client.rs:154:13
[INFO] [stderr]     |
[INFO] [stderr] 152 |               return Err(Error::_Unknown);
[INFO] [stderr]     |               --------------------------- any code following this expression is unreachable
[INFO] [stderr] 153 | 
[INFO] [stderr] 154 | /             self.send_internal(
[INFO] [stderr] 155 | |                 &SetDataRate {
[INFO] [stderr] 156 | |                     rate: BaudRate::B115200,
[INFO] [stderr] 157 | |                 },
[INFO] [stderr] 158 | |                 true,
[INFO] [stderr] 159 | |             )?;
[INFO] [stderr]     | |_______________^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rst`
[INFO] [stderr]    --> src/client.rs:132:25
[INFO] [stderr]     |
[INFO] [stderr] 132 |             if let Some(ref rst) = self.config.rst_pin {
[INFO] [stderr]     |                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rst`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dtr`
[INFO] [stderr]    --> src/client.rs:253:21
[INFO] [stderr]     |
[INFO] [stderr] 253 |         if let Some(ref dtr) = self.config.dtr_pin {
[INFO] [stderr]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dtr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `enable`
[INFO] [stderr]    --> src/client.rs:252:30
[INFO] [stderr]     |
[INFO] [stderr] 252 |     fn low_power_mode(&self, enable: bool) -> Result<(), atat::Error> {
[INFO] [stderr]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_enable`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]    --> src/client.rs:318:24
[INFO] [stderr]     |
[INFO] [stderr] 318 |                     Ok(bytes) => {
[INFO] [stderr]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/client.rs:322:25
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     Err(e) => {
[INFO] [stderr]     |                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/client.rs:399:24
[INFO] [stderr]     |
[INFO] [stderr] 399 |             if let Err(e) = self.handle_urcs() {
[INFO] [stderr]     |                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `write_at`
[INFO] [stderr]    --> src/socket/ring_buffer.rs:187:13
[INFO] [stderr]     |
[INFO] [stderr] 187 |         let write_at = self.get_idx(self.length);
[INFO] [stderr]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_write_at`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/socket/ring_buffer.rs:216:22
[INFO] [stderr]     |
[INFO] [stderr] 216 |         let (size_1, data) = self.enqueue_many_with(|buf| {
[INFO] [stderr]     |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/socket/tcp.rs:455:14
[INFO] [stderr]     |
[INFO] [stderr] 455 |         let (size, result) = f(&mut self.rx_buffer);
[INFO] [stderr]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/socket/udp.rs:122:14
[INFO] [stderr]     |
[INFO] [stderr] 122 |         let (size, result) = f(&mut self.rx_buffer);
[INFO] [stderr]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_state`
[INFO] [stderr]    --> src/client.rs:125:19
[INFO] [stderr]     |
[INFO] [stderr] 125 |     pub(crate) fn get_state(&self) -> Result<State, Error> {
[INFO] [stderr]     |                   ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `meta_mut`
[INFO] [stderr]    --> src/socket/mod.rs:123:19
[INFO] [stderr]     |
[INFO] [stderr] 123 |     pub(crate) fn meta_mut(&mut self) -> &mut SocketMeta {
[INFO] [stderr]     |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `core::result::Result` that must be used
[INFO] [stderr]    --> src/socket/ring_buffer.rs:218:13
[INFO] [stderr]     |
[INFO] [stderr] 218 |             buf.extend_from_slice(&data[..size]);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `publish`
[INFO] [stderr]    --> examples/linux_mqtt.rs:154:42
[INFO] [stderr]     |
[INFO] [stderr] 154 |                 Ok(Notification::Publish(publish)) => {
[INFO] [stderr]     |                                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_publish`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `wrote`
[INFO] [stderr]    --> examples/linux.rs:112:17
[INFO] [stderr]     |
[INFO] [stderr] 112 |             let wrote = <GSMClient<_, _, _> as TcpStack>::write(
[INFO] [stderr]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_wrote`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ublox_cellular-af73e43545b16179
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test command::device_lock::impl_::test::deserialize_pin_status ... ok
[INFO] [stdout] test command::device_lock::impl_::test::serialize_pin_status ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "9c88894f8954514c9a86d77f3fd0cc6712b68e69b6f48cdc874e6b561958d087"`
[INFO] running `"docker" "rm" "-f" "9c88894f8954514c9a86d77f3fd0cc6712b68e69b6f48cdc874e6b561958d087"`
[INFO] [stdout] 9c88894f8954514c9a86d77f3fd0cc6712b68e69b6f48cdc874e6b561958d087