[INFO] cloning repository https://github.com/kyuta3579/Enviro-By-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kyuta3579/Enviro-By-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyuta3579%2FEnviro-By-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyuta3579%2FEnviro-By-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8ce9b17b5c3e529a4af4acdb6d8236030dad8d1
[INFO] building kyuta3579/Enviro-By-Rust against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyuta3579%2FEnviro-By-Rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kyuta3579/Enviro-By-Rust on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/kyuta3579/Enviro-By-Rust
[INFO] finished tweaking git repo https://github.com/kyuta3579/Enviro-By-Rust
[INFO] tweaked toml for git repo https://github.com/kyuta3579/Enviro-By-Rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kyuta3579/Enviro-By-Rust 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] building kyuta3579/Enviro-By-Rust against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyuta3579%2FEnviro-By-Rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kyuta3579/Enviro-By-Rust on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/kyuta3579/Enviro-By-Rust
[INFO] finished tweaking git repo https://github.com/kyuta3579/Enviro-By-Rust
[INFO] tweaked toml for git repo https://github.com/kyuta3579/Enviro-By-Rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kyuta3579/Enviro-By-Rust 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gpio-cdev v0.5.1
[INFO] [stderr]   Downloaded bme280 v0.2.1
[INFO] [stderr]   Downloaded linux-embedded-hal v0.3.2
[INFO] [stderr]   Downloaded i2cdev v0.5.1
[INFO] [stderr]   Downloaded sysfs_gpio v0.6.1
[INFO] [stderr]   Downloaded spidev v0.5.1
[INFO] [stderr]   Downloaded libc v0.2.111
[INFO] [stderr]   Downloaded ltr-559 v0.1.1
[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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffdfd904ce6fe5b86b2c59c1768d0c91593aa2350b4d17f3ac2f14471eeac4d4
[INFO] running `Command { std: "docker" "start" "-a" "ffdfd904ce6fe5b86b2c59c1768d0c91593aa2350b4d17f3ac2f14471eeac4d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffdfd904ce6fe5b86b2c59c1768d0c91593aa2350b4d17f3ac2f14471eeac4d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffdfd904ce6fe5b86b2c59c1768d0c91593aa2350b4d17f3ac2f14471eeac4d4", kill_on_drop: false }`
[INFO] [stdout] ffdfd904ce6fe5b86b2c59c1768d0c91593aa2350b4d17f3ac2f14471eeac4d4
[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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06bd4d51c905fbd8b2806bcee1ce8795934fbffd0b697c3df7ce56f5c46b5f2a
[INFO] running `Command { std: "docker" "start" "-a" "06bd4d51c905fbd8b2806bcee1ce8795934fbffd0b697c3df7ce56f5c46b5f2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.111
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling embedded-hal v0.2.6
[INFO] [stderr]    Compiling bme280 v0.2.1
[INFO] [stderr]    Compiling ltr-559 v0.1.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling nix v0.23.0
[INFO] [stderr]    Compiling termios v0.2.2
[INFO] [stderr]    Compiling ioctl-rs v0.1.6
[INFO] [stderr]    Compiling serial-core v0.4.0
[INFO] [stderr]    Compiling rppal v0.13.1
[INFO] [stderr]    Compiling serial-unix v0.4.0
[INFO] [stderr]    Compiling gpio-cdev v0.5.1
[INFO] [stderr]    Compiling i2cdev v0.5.1
[INFO] [stderr]    Compiling spidev v0.5.1
[INFO] [stderr]    Compiling sysfs_gpio v0.6.1
[INFO] [stderr]    Compiling alsa v0.6.0
[INFO] [stderr]    Compiling linux-embedded-hal v0.3.2
[INFO] [stderr]    Compiling enviro_play v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `CStr`
[INFO] [stdout]  --> src/main.rs:6:25
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ffi::{CString, CStr};
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rppal::gpio::Gpio`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use rppal::gpio::Gpio;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hwp`
[INFO] [stdout]   --> src/main.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let hwp = pcm.hw_params_current().unwrap();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_hwp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lux_raw_0`
[INFO] [stdout]   --> src/main.rs:52:18
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let (lux_raw_0, lux_raw_1) = sensor.get_als_raw_data().unwrap();
[INFO] [stdout]    |                  ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lux_raw_0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lux_raw_1`
[INFO] [stdout]   --> src/main.rs:52:29
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let (lux_raw_0, lux_raw_1) = sensor.get_als_raw_data().unwrap();
[INFO] [stdout]    |                             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lux_raw_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/main.rs:78:20
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 Ok(size) => {
[INFO] [stdout]    |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         writeln!(out, "\x1B[2J");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         writeln!(out, "\x1B[0;0H");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             writeln!(out, "Lux = {}", lux);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 | /         writeln!(out, 
[INFO] [stdout] 58 | |             "Humidity = {}%, Temperature = {}degC, Pressure = {}hpa",
[INFO] [stdout] 59 | |             measurements.humidity, measurements.temperature, (measurements.pressure / 100.00)
[INFO] [stdout] 60 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     writeln!(out, "sound amplitude: {}", maxamp.abs() / 1000000);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.78s
[INFO] running `Command { std: "docker" "inspect" "06bd4d51c905fbd8b2806bcee1ce8795934fbffd0b697c3df7ce56f5c46b5f2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06bd4d51c905fbd8b2806bcee1ce8795934fbffd0b697c3df7ce56f5c46b5f2a", kill_on_drop: false }`
[INFO] [stdout] 06bd4d51c905fbd8b2806bcee1ce8795934fbffd0b697c3df7ce56f5c46b5f2a
[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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f4ad92f249e61dba9779d608600fa52ad3fd7e4ecb18cf031d000d0e150ca3f
[INFO] running `Command { std: "docker" "start" "-a" "5f4ad92f249e61dba9779d608600fa52ad3fd7e4ecb18cf031d000d0e150ca3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling enviro_play v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `CStr`
[INFO] [stdout]  --> src/main.rs:6:25
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ffi::{CString, CStr};
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rppal::gpio::Gpio`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use rppal::gpio::Gpio;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hwp`
[INFO] [stdout]   --> src/main.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let hwp = pcm.hw_params_current().unwrap();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_hwp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lux_raw_0`
[INFO] [stdout]   --> src/main.rs:52:18
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let (lux_raw_0, lux_raw_1) = sensor.get_als_raw_data().unwrap();
[INFO] [stdout]    |                  ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lux_raw_0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lux_raw_1`
[INFO] [stdout]   --> src/main.rs:52:29
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let (lux_raw_0, lux_raw_1) = sensor.get_als_raw_data().unwrap();
[INFO] [stdout]    |                             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lux_raw_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/main.rs:78:20
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 Ok(size) => {
[INFO] [stdout]    |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         writeln!(out, "\x1B[2J");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         writeln!(out, "\x1B[0;0H");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             writeln!(out, "Lux = {}", lux);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 | /         writeln!(out, 
[INFO] [stdout] 58 | |             "Humidity = {}%, Temperature = {}degC, Pressure = {}hpa",
[INFO] [stdout] 59 | |             measurements.humidity, measurements.temperature, (measurements.pressure / 100.00)
[INFO] [stdout] 60 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     writeln!(out, "sound amplitude: {}", maxamp.abs() / 1000000);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "5f4ad92f249e61dba9779d608600fa52ad3fd7e4ecb18cf031d000d0e150ca3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f4ad92f249e61dba9779d608600fa52ad3fd7e4ecb18cf031d000d0e150ca3f", kill_on_drop: false }`
[INFO] [stdout] 5f4ad92f249e61dba9779d608600fa52ad3fd7e4ecb18cf031d000d0e150ca3f