[INFO] cloning repository https://github.com/2ndDerivative/GSeriesMFC
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/2ndDerivative/GSeriesMFC" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F2ndDerivative%2FGSeriesMFC", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F2ndDerivative%2FGSeriesMFC'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 511abc26ce8c033efc0978149bfe2395dd352861
[INFO] testing 2ndDerivative/GSeriesMFC against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F2ndDerivative%2FGSeriesMFC" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/2ndDerivative/GSeriesMFC
[INFO] finished tweaking git repo https://github.com/2ndDerivative/GSeriesMFC
[INFO] tweaked toml for git repo https://github.com/2ndDerivative/GSeriesMFC written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/2ndDerivative/GSeriesMFC on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/2ndDerivative/GSeriesMFC already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5c63443bb4a7c8cdc0ffd5ab171e68cdcc2f8964eeee92d4c4277eb38d5aa79
[INFO] running `Command { std: "docker" "start" "-a" "d5c63443bb4a7c8cdc0ffd5ab171e68cdcc2f8964eeee92d4c4277eb38d5aa79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5c63443bb4a7c8cdc0ffd5ab171e68cdcc2f8964eeee92d4c4277eb38d5aa79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5c63443bb4a7c8cdc0ffd5ab171e68cdcc2f8964eeee92d4c4277eb38d5aa79", kill_on_drop: false }`
[INFO] [stdout] d5c63443bb4a7c8cdc0ffd5ab171e68cdcc2f8964eeee92d4c4277eb38d5aa79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7fad54a7c44c1fac32c389b152b5ed795461000565257e5e8ee7c97b740b72b
[INFO] running `Command { std: "docker" "start" "-a" "e7fad54a7c44c1fac32c389b152b5ed795461000565257e5e8ee7c97b740b72b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling pin-project-lite v0.2.14
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling futures-task v0.3.30
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling futures-io v0.3.30
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling bytes v1.7.1
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.76
[INFO] [stderr]    Compiling nix v0.26.4
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling mio v1.0.2
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling tokio v1.39.3
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling unescaper v0.1.5
[INFO] [stderr]    Compiling serialport v4.5.0
[INFO] [stderr]    Compiling mio-serial v5.0.5
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling tokio-serial v5.4.4
[INFO] [stderr]    Compiling gseries_mfc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `serial_port`
[INFO] [stdout]   --> src/main.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 |     async fn new(serial_port: &str, device_address: u8) -> Result<Self, std::io::Error> {
[INFO] [stdout]    |                  ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_serial_port`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `device_address`
[INFO] [stdout]   --> src/main.rs:12:37
[INFO] [stdout]    |
[INFO] [stdout] 12 |     async fn new(serial_port: &str, device_address: u8) -> Result<Self, std::io::Error> {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_device_address`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mode`
[INFO] [stdout]   --> src/main.rs:16:40
[INFO] [stdout]    |
[INFO] [stdout] 16 |     async fn set_valve_mode(&mut self, mode: ValveMode) -> Result<(), std::io::Error> {
[INFO] [stdout]    |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_mode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `send_message` is never used
[INFO] [stdout]   --> src/main.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | async fn send_message<W: Write>(device: &mut W, device_address: u8, command: Command) -> Result<(), std::io::Error> {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `symbol` and `code_number` are never used
[INFO] [stdout]   --> src/main.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Gas {
[INFO] [stdout]    | -------- methods in this implementation
[INFO] [stdout] 49 |     fn symbol(&self) -> &'static str {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn code_number(&self) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_bytes` is never used
[INFO] [stdout]   --> src/main.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | impl Command {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 75 |     fn to_bytes(&self) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `message` is never used
[INFO] [stdout]    --> src/main.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | impl ValveMode {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] 103 |     fn message(&self) -> &'static str {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 59s
[INFO] running `Command { std: "docker" "inspect" "e7fad54a7c44c1fac32c389b152b5ed795461000565257e5e8ee7c97b740b72b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7fad54a7c44c1fac32c389b152b5ed795461000565257e5e8ee7c97b740b72b", kill_on_drop: false }`
[INFO] [stdout] e7fad54a7c44c1fac32c389b152b5ed795461000565257e5e8ee7c97b740b72b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98b07d2a52114bd4b50c565379f77b7c3b89de299f754b49fd57fd08ab13fabe
[INFO] running `Command { std: "docker" "start" "-a" "98b07d2a52114bd4b50c565379f77b7c3b89de299f754b49fd57fd08ab13fabe", kill_on_drop: false }`
[INFO] [stderr]    Compiling gseries_mfc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `serial_port`
[INFO] [stdout]   --> src/main.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 |     async fn new(serial_port: &str, device_address: u8) -> Result<Self, std::io::Error> {
[INFO] [stdout]    |                  ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_serial_port`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `device_address`
[INFO] [stdout]   --> src/main.rs:12:37
[INFO] [stdout]    |
[INFO] [stdout] 12 |     async fn new(serial_port: &str, device_address: u8) -> Result<Self, std::io::Error> {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_device_address`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mode`
[INFO] [stdout]   --> src/main.rs:16:40
[INFO] [stdout]    |
[INFO] [stdout] 16 |     async fn set_valve_mode(&mut self, mode: ValveMode) -> Result<(), std::io::Error> {
[INFO] [stdout]    |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_mode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `send_message` is never used
[INFO] [stdout]   --> src/main.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | async fn send_message<W: Write>(device: &mut W, device_address: u8, command: Command) -> Result<(), std::io::Error> {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `symbol` and `code_number` are never used
[INFO] [stdout]   --> src/main.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Gas {
[INFO] [stdout]    | -------- methods in this implementation
[INFO] [stdout] 49 |     fn symbol(&self) -> &'static str {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn code_number(&self) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_bytes` is never used
[INFO] [stdout]   --> src/main.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | impl Command {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 75 |     fn to_bytes(&self) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `message` is never used
[INFO] [stdout]    --> src/main.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | impl ValveMode {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] 103 |     fn message(&self) -> &'static str {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "98b07d2a52114bd4b50c565379f77b7c3b89de299f754b49fd57fd08ab13fabe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98b07d2a52114bd4b50c565379f77b7c3b89de299f754b49fd57fd08ab13fabe", kill_on_drop: false }`
[INFO] [stdout] 98b07d2a52114bd4b50c565379f77b7c3b89de299f754b49fd57fd08ab13fabe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7cf2ff015f6e554668060435da0eb87d1566ce14e7a492a4dd49a0b0916da8d5
[INFO] running `Command { std: "docker" "start" "-a" "7cf2ff015f6e554668060435da0eb87d1566ce14e7a492a4dd49a0b0916da8d5", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `serial_port`
[INFO] [stderr]   --> src/main.rs:12:18
[INFO] [stderr]    |
[INFO] [stderr] 12 |     async fn new(serial_port: &str, device_address: u8) -> Result<Self, std::io::Error> {
[INFO] [stderr]    |                  ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_serial_port`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `device_address`
[INFO] [stderr]   --> src/main.rs:12:37
[INFO] [stderr]    |
[INFO] [stderr] 12 |     async fn new(serial_port: &str, device_address: u8) -> Result<Self, std::io::Error> {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_device_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mode`
[INFO] [stderr]   --> src/main.rs:16:40
[INFO] [stderr]    |
[INFO] [stderr] 16 |     async fn set_valve_mode(&mut self, mode: ValveMode) -> Result<(), std::io::Error> {
[INFO] [stderr]    |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_mode`
[INFO] [stderr] 
[INFO] [stderr] warning: function `send_message` is never used
[INFO] [stderr]   --> src/main.rs:21:10
[INFO] [stderr]    |
[INFO] [stderr] 21 | async fn send_message<W: Write>(device: &mut W, device_address: u8, command: Command) -> Result<(), std::io::Error> {
[INFO] [stderr]    |          ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `symbol` and `code_number` are never used
[INFO] [stderr]   --> src/main.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 48 | impl Gas {
[INFO] [stderr]    | -------- methods in this implementation
[INFO] [stderr] 49 |     fn symbol(&self) -> &'static str {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 57 |     fn code_number(&self) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `to_bytes` is never used
[INFO] [stderr]   --> src/main.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 74 | impl Command {
[INFO] [stderr]    | ------------ method in this implementation
[INFO] [stderr] 75 |     fn to_bytes(&self) -> Vec<u8> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `message` is never used
[INFO] [stderr]    --> src/main.rs:103:8
[INFO] [stderr]     |
[INFO] [stderr] 102 | impl ValveMode {
[INFO] [stderr]     | -------------- method in this implementation
[INFO] [stderr] 103 |     fn message(&self) -> &'static str {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `gseries_mfc` (bin "gseries_mfc" test) generated 7 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/gseries_mfc-86563d1ad8e1bff9)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7cf2ff015f6e554668060435da0eb87d1566ce14e7a492a4dd49a0b0916da8d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cf2ff015f6e554668060435da0eb87d1566ce14e7a492a4dd49a0b0916da8d5", kill_on_drop: false }`
[INFO] [stdout] 7cf2ff015f6e554668060435da0eb87d1566ce14e7a492a4dd49a0b0916da8d5
