[INFO] fetching crate ups-low-battery-level 0.1.1...
[INFO] building ups-low-battery-level-0.1.1 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate ups-low-battery-level 0.1.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate ups-low-battery-level 0.1.1
[INFO] finished tweaking crates.io crate ups-low-battery-level 0.1.1
[INFO] tweaked toml for crates.io crate ups-low-battery-level 0.1.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ups-low-battery-level 0.1.1 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ups-low-battery-level 0.1.1 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.78
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.78
[INFO] [stderr]   Downloaded phf v0.10.0
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.28
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.78
[INFO] [stderr]   Downloaded security-framework-sys v2.4.2
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.78
[INFO] [stderr]   Downloaded proc-macro2 v1.0.30
[INFO] [stderr]   Downloaded typenum v1.14.0
[INFO] [stderr]   Downloaded socket2 v0.4.2
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.78
[INFO] [stderr]   Downloaded serde_json v1.0.68
[INFO] [stderr]   Downloaded syn v1.0.80
[INFO] [stderr]   Downloaded cpufeatures v0.2.1
[INFO] [stderr]   Downloaded futures-executor v0.3.17
[INFO] [stderr]   Downloaded async-trait v0.1.51
[INFO] [stderr]   Downloaded md-5 v0.9.1
[INFO] [stderr]   Downloaded futures-channel v0.3.17
[INFO] [stderr]   Downloaded tokio-postgres v0.7.3
[INFO] [stderr]   Downloaded tokio-util v0.6.8
[INFO] [stderr]   Downloaded js-sys v0.3.55
[INFO] [stderr]   Downloaded http v0.2.5
[INFO] [stderr]   Downloaded bumpalo v3.7.1
[INFO] [stderr]   Downloaded h2 v0.3.6
[INFO] [stderr]   Downloaded object v0.26.2
[INFO] [stderr]   Downloaded futures-util v0.3.17
[INFO] [stderr]   Downloaded openssl-sys v0.9.67
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.14
[INFO] [stderr]   Downloaded futures v0.3.17
[INFO] [stderr]   Downloaded generic-array v0.14.4
[INFO] [stderr]   Downloaded postgres-types v0.2.2
[INFO] [stderr]   Downloaded postgres v0.19.2
[INFO] [stderr]   Downloaded futures-task v0.3.17
[INFO] [stderr]   Downloaded slab v0.4.5
[INFO] [stderr]   Downloaded hyper v0.14.13
[INFO] [stderr]   Downloaded futures-core v0.3.17
[INFO] [stderr]   Downloaded cc v1.0.71
[INFO] [stderr]   Downloaded libc v0.2.103
[INFO] [stderr]   Downloaded pkg-config v0.3.20
[INFO] [stderr]   Downloaded core-foundation v0.9.2
[INFO] [stderr]   Downloaded unicode-bidi v0.3.7
[INFO] [stderr]   Downloaded tinyvec v1.5.0
[INFO] [stderr]   Downloaded instant v0.1.11
[INFO] [stderr]   Downloaded siphasher v0.3.7
[INFO] [stderr]   Downloaded sha2 v0.9.8
[INFO] [stderr]   Downloaded stringprep v0.1.2
[INFO] [stderr]   Downloaded postgres-protocol v0.6.2
[INFO] [stderr]   Downloaded futures-io v0.3.17
[INFO] [stderr]   Downloaded futures-sink v0.3.17
[INFO] [stderr]   Downloaded security-framework v2.4.2
[INFO] [stderr]   Downloaded web-sys v0.3.55
[INFO] [stderr]   Downloaded futures-macro v0.3.17
[INFO] [stderr]   Downloaded tokio v1.12.0
[INFO] [stderr]   Downloaded reqwest v0.11.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04f511735046706c1621edd9e2e53a1b9d3bde5e7248f9d3b38d73856c41d17c
[INFO] running `Command { std: "docker" "start" "-a" "04f511735046706c1621edd9e2e53a1b9d3bde5e7248f9d3b38d73856c41d17c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04f511735046706c1621edd9e2e53a1b9d3bde5e7248f9d3b38d73856c41d17c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04f511735046706c1621edd9e2e53a1b9d3bde5e7248f9d3b38d73856c41d17c", kill_on_drop: false }`
[INFO] [stdout] 04f511735046706c1621edd9e2e53a1b9d3bde5e7248f9d3b38d73856c41d17c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c963d61f890e6cd27e8b7691ceaf5211883e110e08d2903008a97ea6f07c06ff
[INFO] running `Command { std: "docker" "start" "-a" "c963d61f890e6cd27e8b7691ceaf5211883e110e08d2903008a97ea6f07c06ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling futures-sink v0.3.17
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling tokio v1.12.0
[INFO] [stderr]    Compiling pkg-config v0.3.20
[INFO] [stderr]    Compiling tinyvec v1.5.0
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling unicode-bidi v0.3.7
[INFO] [stderr]    Compiling ppv-lite86 v0.2.14
[INFO] [stderr]    Compiling tracing-core v0.1.21
[INFO] [stderr]    Compiling http v0.2.5
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling instant v0.1.11
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling object v0.26.2
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling online v3.0.1
[INFO] [stderr]    Compiling tracing v0.1.29
[INFO] [stderr]    Compiling phf v0.10.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling socket2 v0.4.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling openssl-sys v0.9.67
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling crypto-mac v0.11.1
[INFO] [stderr]    Compiling md-5 v0.9.1
[INFO] [stderr]    Compiling sha2 v0.9.8
[INFO] [stderr]    Compiling hmac v0.11.0
[INFO] [stderr]    Compiling stringprep v0.1.2
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling http-body v0.4.3
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling postgres-protocol v0.6.2
[INFO] [stderr]    Compiling postgres-types v0.2.2
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling tokio-util v0.6.8
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling h2 v0.3.6
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling tokio-postgres v0.7.3
[INFO] [stderr]    Compiling postgres v0.19.2
[INFO] [stderr]    Compiling hyper v0.14.13
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.5
[INFO] [stderr]    Compiling ups-low-battery-level v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:143:5
[INFO] [stdout]     |
[INFO] [stdout] 143 |     event_ups_low_battery_level();
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let _ = event_ups_low_battery_level();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 |     log_ups_low_battery_level();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let _ = log_ups_low_battery_level();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |             log_send_sms_ups_low_battery_level();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 152 |             let _ = log_send_sms_ups_low_battery_level();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             log_server_err();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |             let _ = log_server_err();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |             log_request_status_err();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 160 |             let _ = log_request_status_err();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 166 |         log_internet_err();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let _ = log_internet_err();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.67s
[INFO] running `Command { std: "docker" "inspect" "c963d61f890e6cd27e8b7691ceaf5211883e110e08d2903008a97ea6f07c06ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c963d61f890e6cd27e8b7691ceaf5211883e110e08d2903008a97ea6f07c06ff", kill_on_drop: false }`
[INFO] [stdout] c963d61f890e6cd27e8b7691ceaf5211883e110e08d2903008a97ea6f07c06ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b2a55acc9f3bb861fc74c838ed09ab954f046029856b23b7e3cd423e17aac8b
[INFO] running `Command { std: "docker" "start" "-a" "2b2a55acc9f3bb861fc74c838ed09ab954f046029856b23b7e3cd423e17aac8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling ups-low-battery-level v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:143:5
[INFO] [stdout]     |
[INFO] [stdout] 143 |     event_ups_low_battery_level();
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let _ = event_ups_low_battery_level();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 |     log_ups_low_battery_level();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let _ = log_ups_low_battery_level();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |             log_send_sms_ups_low_battery_level();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 152 |             let _ = log_send_sms_ups_low_battery_level();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             log_server_err();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |             let _ = log_server_err();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |             log_request_status_err();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 160 |             let _ = log_request_status_err();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 166 |         log_internet_err();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let _ = log_internet_err();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "2b2a55acc9f3bb861fc74c838ed09ab954f046029856b23b7e3cd423e17aac8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b2a55acc9f3bb861fc74c838ed09ab954f046029856b23b7e3cd423e17aac8b", kill_on_drop: false }`
[INFO] [stdout] 2b2a55acc9f3bb861fc74c838ed09ab954f046029856b23b7e3cd423e17aac8b
