[INFO] cloning repository https://github.com/malam111/apakabar [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/malam111/apakabar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmalam111%2Fapakabar", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmalam111%2Fapakabar'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5b963b517373de5c9cdbff242d9bed07a2f033c1 [INFO] testing malam111/apakabar against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmalam111%2Fapakabar" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/malam111/apakabar [INFO] finished tweaking git repo https://github.com/malam111/apakabar [INFO] tweaked toml for git repo https://github.com/malam111/apakabar written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/malam111/apakabar on toolchain 9f93af291970322f4f1c6315ccde4d7078201159 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/malam111/apakabar 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" "+9f93af291970322f4f1c6315ccde4d7078201159" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e2c8884a389e5d95a64ba773aee23a9a8275390ca0a116be6420fcf4889267cc [INFO] running `Command { std: "docker" "start" "-a" "e2c8884a389e5d95a64ba773aee23a9a8275390ca0a116be6420fcf4889267cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e2c8884a389e5d95a64ba773aee23a9a8275390ca0a116be6420fcf4889267cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e2c8884a389e5d95a64ba773aee23a9a8275390ca0a116be6420fcf4889267cc", kill_on_drop: false }` [INFO] [stdout] e2c8884a389e5d95a64ba773aee23a9a8275390ca0a116be6420fcf4889267cc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 51355927d11fcd063515bbaf9e3fd13b6fa37c1de998cd9c31cb97eaf405c048 [INFO] running `Command { std: "docker" "start" "-a" "51355927d11fcd063515bbaf9e3fd13b6fa37c1de998cd9c31cb97eaf405c048", kill_on_drop: false }` [INFO] [stderr] Compiling brightness v0.1.0 (/opt/rustwide/workdir/utils/brightness) [INFO] [stderr] Compiling battery v0.1.0 (/opt/rustwide/workdir/utils/battery) [INFO] [stderr] Compiling memory v0.1.0 (/opt/rustwide/workdir/utils/memory) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> utils/brightness/src/brightness.rs:58:21 [INFO] [stdout] | [INFO] [stdout] 58 | pub fn discover(mut self) -> io::Result> { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `max` is never read [INFO] [stdout] --> utils/brightness/src/brightness.rs:35:5 [INFO] [stdout] | [INFO] [stdout] 32 | pub struct BrightnessBuilder { [INFO] [stdout] | ----------------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 35 | max: Option, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> utils/memory/src/memory.rs:72:21 [INFO] [stdout] | [INFO] [stdout] 72 | pub fn discover(mut self) -> io::Result> { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> utils/brightness/src/brightness.rs:85:13 [INFO] [stdout] | [INFO] [stdout] 85 | reader.seek(io::SeekFrom::Start(0)); [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] 85 | let _ = reader.seek(io::SeekFrom::Start(0)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> utils/brightness/src/brightness.rs:86:13 [INFO] [stdout] | [INFO] [stdout] 86 | reader.read_to_string(&mut buffer); [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] 86 | let _ = reader.read_to_string(&mut buffer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> utils/memory/src/memory.rs:89:13 [INFO] [stdout] | [INFO] [stdout] 89 | reader.seek(io::SeekFrom::Start(0)); [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] 89 | let _ = reader.seek(io::SeekFrom::Start(0)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> utils/memory/src/memory.rs:90:13 [INFO] [stdout] | [INFO] [stdout] 90 | reader.read_to_string(&mut buffer); [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] 90 | let _ = reader.read_to_string(&mut buffer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `path` is never read [INFO] [stdout] --> utils/battery/src/battery.rs:112:5 [INFO] [stdout] | [INFO] [stdout] 111 | struct Uevent { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 112 | path: PathBuf, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Uevent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> utils/battery/src/battery.rs:62:26 [INFO] [stdout] | [INFO] [stdout] 62 | pub fn builder(path: &str) -> Result { [INFO] [stdout] | ^^^^ ^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 62 | pub fn builder(path: &str) -> Result, io::Error> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type [INFO] [stdout] --> utils/battery/src/battery.rs:86:19 [INFO] [stdout] | [INFO] [stdout] 86 | ).unwrap().clone().into(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type [INFO] [stdout] --> utils/battery/src/battery.rs:90:19 [INFO] [stdout] | [INFO] [stdout] 90 | ).unwrap().clone().to_string(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Map` that must be used [INFO] [stdout] --> utils/battery/src/battery.rs:195:9 [INFO] [stdout] | [INFO] [stdout] 195 | / paths.iter().map(|&path| { [INFO] [stdout] 196 | | let path = Path::new(&path).to_path_buf(); [INFO] [stdout] 197 | | let file = File::open(&path).unwrap(); [INFO] [stdout] 198 | | let reader = io::BufReader::new(file); [INFO] [stdout] ... | [INFO] [stdout] 205 | | () [INFO] [stdout] 206 | | }); [INFO] [stdout] | |__________^ [INFO] [stdout] | [INFO] [stdout] = note: iterators are lazy and do nothing unless consumed [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] 195 | let _ = paths.iter().map(|&path| { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `Iterator::map` call that discard the iterator's values [INFO] [stdout] --> utils/battery/src/battery.rs:195:22 [INFO] [stdout] | [INFO] [stdout] 195 | paths.iter().map(|&path| { [INFO] [stdout] | ^ ------- [INFO] [stdout] | | | [INFO] [stdout] | _______________________|___this function returns `()`, which is likely not what you wanted [INFO] [stdout] | | ______________________| [INFO] [stdout] | || [INFO] [stdout] 196 | || let path = Path::new(&path).to_path_buf(); [INFO] [stdout] 197 | || let file = File::open(&path).unwrap(); [INFO] [stdout] 198 | || let reader = io::BufReader::new(file); [INFO] [stdout] ... || [INFO] [stdout] 205 | || () [INFO] [stdout] 206 | || }); [INFO] [stdout] | ||_________-^ after this call to map, the resulting iterator is `impl Iterator`, which means the only information carried by the iterator is the number of items [INFO] [stdout] | |__________| [INFO] [stdout] | called `Iterator::map` with callable that returns `()` [INFO] [stdout] | [INFO] [stdout] = note: `Iterator::map`, like many of the methods on `Iterator`, gets executed lazily, meaning that its effects won't be visible until it is iterated [INFO] [stdout] = note: `#[warn(map_unit_fn)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: you might have meant to use `Iterator::for_each` [INFO] [stdout] | [INFO] [stdout] 195 - paths.iter().map(|&path| { [INFO] [stdout] 195 + paths.iter().for_each(|&path| { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> utils/battery/src/battery.rs:199:13 [INFO] [stdout] | [INFO] [stdout] 199 | / &self.uevents.push( [INFO] [stdout] 200 | | Uevent { [INFO] [stdout] 201 | | path, [INFO] [stdout] 202 | | reader, [INFO] [stdout] 203 | | } [INFO] [stdout] 204 | | ); [INFO] [stdout] | |_____________^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 199 | let _ = &self.uevents.push( [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> utils/battery/src/battery.rs:257:13 [INFO] [stdout] | [INFO] [stdout] 257 | uevent.reader.seek(io::SeekFrom::Start(0)); [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] 257 | let _ = uevent.reader.seek(io::SeekFrom::Start(0)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> utils/battery/src/battery.rs:258:13 [INFO] [stdout] | [INFO] [stdout] 258 | uevent.reader.read_to_string(&mut buffer); [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] 258 | let _ = uevent.reader.read_to_string(&mut buffer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling apakabar v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | FrontEnd::main_loop(); [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] 4 | let _ = FrontEnd::main_loop(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s [INFO] running `Command { std: "docker" "inspect" "51355927d11fcd063515bbaf9e3fd13b6fa37c1de998cd9c31cb97eaf405c048", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "51355927d11fcd063515bbaf9e3fd13b6fa37c1de998cd9c31cb97eaf405c048", kill_on_drop: false }` [INFO] [stdout] 51355927d11fcd063515bbaf9e3fd13b6fa37c1de998cd9c31cb97eaf405c048 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fe140e7e2a60c6006f215806f801ebc5a1ab93db450fef529154b0938b728e73 [INFO] running `Command { std: "docker" "start" "-a" "fe140e7e2a60c6006f215806f801ebc5a1ab93db450fef529154b0938b728e73", kill_on_drop: false }` [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> utils/memory/src/memory.rs:72:21 [INFO] [stdout] | [INFO] [stdout] 72 | pub fn discover(mut self) -> io::Result> { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> utils/memory/src/memory.rs:89:13 [INFO] [stdout] | [INFO] [stdout] 89 | reader.seek(io::SeekFrom::Start(0)); [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] 89 | let _ = reader.seek(io::SeekFrom::Start(0)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> utils/memory/src/memory.rs:90:13 [INFO] [stdout] | [INFO] [stdout] 90 | reader.read_to_string(&mut buffer); [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] 90 | let _ = reader.read_to_string(&mut buffer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `path` is never read [INFO] [stdout] --> utils/battery/src/battery.rs:112:5 [INFO] [stdout] | [INFO] [stdout] 111 | struct Uevent { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 112 | path: PathBuf, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Uevent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> utils/battery/src/battery.rs:62:26 [INFO] [stdout] | [INFO] [stdout] 62 | pub fn builder(path: &str) -> Result { [INFO] [stdout] | ^^^^ ^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 62 | pub fn builder(path: &str) -> Result, io::Error> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type [INFO] [stdout] --> utils/battery/src/battery.rs:86:19 [INFO] [stdout] | [INFO] [stdout] 86 | ).unwrap().clone().into(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type [INFO] [stdout] --> utils/battery/src/battery.rs:90:19 [INFO] [stdout] | [INFO] [stdout] 90 | ).unwrap().clone().to_string(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Map` that must be used [INFO] [stdout] --> utils/battery/src/battery.rs:195:9 [INFO] [stdout] | [INFO] [stdout] 195 | / paths.iter().map(|&path| { [INFO] [stdout] 196 | | let path = Path::new(&path).to_path_buf(); [INFO] [stdout] 197 | | let file = File::open(&path).unwrap(); [INFO] [stdout] 198 | | let reader = io::BufReader::new(file); [INFO] [stdout] ... | [INFO] [stdout] 205 | | () [INFO] [stdout] 206 | | }); [INFO] [stdout] | |__________^ [INFO] [stdout] | [INFO] [stdout] = note: iterators are lazy and do nothing unless consumed [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] 195 | let _ = paths.iter().map(|&path| { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `Iterator::map` call that discard the iterator's values [INFO] [stdout] --> utils/battery/src/battery.rs:195:22 [INFO] [stdout] | [INFO] [stdout] 195 | paths.iter().map(|&path| { [INFO] [stdout] | ^ ------- [INFO] [stdout] | | | [INFO] [stdout] | _______________________|___this function returns `()`, which is likely not what you wanted [INFO] [stdout] | | ______________________| [INFO] [stdout] | || [INFO] [stdout] 196 | || let path = Path::new(&path).to_path_buf(); [INFO] [stdout] 197 | || let file = File::open(&path).unwrap(); [INFO] [stdout] 198 | || let reader = io::BufReader::new(file); [INFO] [stdout] ... || [INFO] [stdout] 205 | || () [INFO] [stdout] 206 | || }); [INFO] [stdout] | ||_________-^ after this call to map, the resulting iterator is `impl Iterator`, which means the only information carried by the iterator is the number of items [INFO] [stdout] | |__________| [INFO] [stdout] | called `Iterator::map` with callable that returns `()` [INFO] [stdout] | [INFO] [stdout] = note: `Iterator::map`, like many of the methods on `Iterator`, gets executed lazily, meaning that its effects won't be visible until it is iterated [INFO] [stdout] = note: `#[warn(map_unit_fn)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: you might have meant to use `Iterator::for_each` [INFO] [stdout] | [INFO] [stdout] 195 - paths.iter().map(|&path| { [INFO] [stdout] 195 + paths.iter().for_each(|&path| { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling apakabar v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> utils/battery/src/battery.rs:199:13 [INFO] [stdout] | [INFO] [stdout] 199 | / &self.uevents.push( [INFO] [stdout] 200 | | Uevent { [INFO] [stdout] 201 | | path, [INFO] [stdout] 202 | | reader, [INFO] [stdout] 203 | | } [INFO] [stdout] 204 | | ); [INFO] [stdout] | |_____________^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 199 | let _ = &self.uevents.push( [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> utils/battery/src/battery.rs:257:13 [INFO] [stdout] | [INFO] [stdout] 257 | uevent.reader.seek(io::SeekFrom::Start(0)); [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] 257 | let _ = uevent.reader.seek(io::SeekFrom::Start(0)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> utils/battery/src/battery.rs:258:13 [INFO] [stdout] | [INFO] [stdout] 258 | uevent.reader.read_to_string(&mut buffer); [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] 258 | let _ = uevent.reader.read_to_string(&mut buffer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> utils/brightness/src/brightness.rs:58:21 [INFO] [stdout] | [INFO] [stdout] 58 | pub fn discover(mut self) -> io::Result> { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `max` is never read [INFO] [stdout] --> utils/brightness/src/brightness.rs:35:5 [INFO] [stdout] | [INFO] [stdout] 32 | pub struct BrightnessBuilder { [INFO] [stdout] | ----------------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 35 | max: Option, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> utils/brightness/src/brightness.rs:85:13 [INFO] [stdout] | [INFO] [stdout] 85 | reader.seek(io::SeekFrom::Start(0)); [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] 85 | let _ = reader.seek(io::SeekFrom::Start(0)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> utils/brightness/src/brightness.rs:86:13 [INFO] [stdout] | [INFO] [stdout] 86 | reader.read_to_string(&mut buffer); [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] 86 | let _ = reader.read_to_string(&mut buffer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | FrontEnd::main_loop(); [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] 4 | let _ = FrontEnd::main_loop(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.20s [INFO] running `Command { std: "docker" "inspect" "fe140e7e2a60c6006f215806f801ebc5a1ab93db450fef529154b0938b728e73", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fe140e7e2a60c6006f215806f801ebc5a1ab93db450fef529154b0938b728e73", kill_on_drop: false }` [INFO] [stdout] fe140e7e2a60c6006f215806f801ebc5a1ab93db450fef529154b0938b728e73 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] a4601e947e6948ceaf979b3c17b7ad63c2e17401e63248f3b194d78bd876de7d [INFO] running `Command { std: "docker" "start" "-a" "a4601e947e6948ceaf979b3c17b7ad63c2e17401e63248f3b194d78bd876de7d", kill_on_drop: false }` [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> utils/brightness/src/brightness.rs:58:21 [INFO] [stderr] | [INFO] [stderr] 58 | pub fn discover(mut self) -> io::Result> { [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: field `max` is never read [INFO] [stderr] --> utils/brightness/src/brightness.rs:35:5 [INFO] [stderr] | [INFO] [stderr] 32 | pub struct BrightnessBuilder { [INFO] [stderr] | ----------------- field in this struct [INFO] [stderr] ... [INFO] [stderr] 35 | max: Option, [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> utils/brightness/src/brightness.rs:85:13 [INFO] [stderr] | [INFO] [stderr] 85 | reader.seek(io::SeekFrom::Start(0)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 85 | let _ = reader.seek(io::SeekFrom::Start(0)); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> utils/brightness/src/brightness.rs:86:13 [INFO] [stderr] | [INFO] [stderr] 86 | reader.read_to_string(&mut buffer); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 86 | let _ = reader.read_to_string(&mut buffer); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `brightness` (lib) generated 4 warnings (run `cargo fix --lib -p brightness` to apply 1 suggestion) [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> utils/memory/src/memory.rs:72:21 [INFO] [stderr] | [INFO] [stderr] 72 | pub fn discover(mut self) -> io::Result> { [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> utils/memory/src/memory.rs:89:13 [INFO] [stderr] | [INFO] [stderr] 89 | reader.seek(io::SeekFrom::Start(0)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 89 | let _ = reader.seek(io::SeekFrom::Start(0)); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> utils/memory/src/memory.rs:90:13 [INFO] [stderr] | [INFO] [stderr] 90 | reader.read_to_string(&mut buffer); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 90 | let _ = reader.read_to_string(&mut buffer); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: field `path` is never read [INFO] [stderr] --> utils/battery/src/battery.rs:112:5 [INFO] [stderr] | [INFO] [stderr] 111 | struct Uevent { [INFO] [stderr] | ------ field in this struct [INFO] [stderr] 112 | path: PathBuf, [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `Uevent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> utils/battery/src/battery.rs:62:26 [INFO] [stderr] | [INFO] [stderr] 62 | pub fn builder(path: &str) -> Result { [INFO] [stderr] | ^^^^ ^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stderr] | | [INFO] [stderr] | the lifetime is elided here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: use `'_` for type paths [INFO] [stderr] | [INFO] [stderr] 62 | pub fn builder(path: &str) -> Result, io::Error> { [INFO] [stderr] | ++++ [INFO] [stderr] [INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type [INFO] [stderr] --> utils/battery/src/battery.rs:86:19 [INFO] [stderr] | [INFO] [stderr] 86 | ).unwrap().clone().into(); [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stderr] [INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type [INFO] [stderr] --> utils/battery/src/battery.rs:90:19 [INFO] [stderr] | [INFO] [stderr] 90 | ).unwrap().clone().to_string(); [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `Map` that must be used [INFO] [stderr] --> utils/battery/src/battery.rs:195:9 [INFO] [stderr] | [INFO] [stderr] 195 | / paths.iter().map(|&path| { [INFO] [stderr] 196 | | let path = Path::new(&path).to_path_buf(); [INFO] [stderr] 197 | | let file = File::open(&path).unwrap(); [INFO] [stderr] 198 | | let reader = io::BufReader::new(file); [INFO] [stderr] ... | [INFO] [stderr] 205 | | () [INFO] [stderr] 206 | | }); [INFO] [stderr] | |__________^ [INFO] [stderr] | [INFO] [stderr] = note: iterators are lazy and do nothing unless consumed [INFO] [stderr] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 195 | let _ = paths.iter().map(|&path| { [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `Iterator::map` call that discard the iterator's values [INFO] [stderr] --> utils/battery/src/battery.rs:195:22 [INFO] [stderr] | [INFO] [stderr] 195 | paths.iter().map(|&path| { [INFO] [stderr] | ^ ------- [INFO] [stderr] | | | [INFO] [stderr] | _______________________|___this function returns `()`, which is likely not what you wanted [INFO] [stderr] | | ______________________| [INFO] [stderr] | || [INFO] [stderr] 196 | || let path = Path::new(&path).to_path_buf(); [INFO] [stderr] 197 | || let file = File::open(&path).unwrap(); [INFO] [stderr] 198 | || let reader = io::BufReader::new(file); [INFO] [stderr] ... || [INFO] [stderr] 205 | || () [INFO] [stderr] 206 | || }); [INFO] [stderr] | ||_________-^ after this call to map, the resulting iterator is `impl Iterator`, which means the only information carried by the iterator is the number of items [INFO] [stderr] | |__________| [INFO] [stderr] | called `Iterator::map` with callable that returns `()` [INFO] [stderr] | [INFO] [stderr] = note: `Iterator::map`, like many of the methods on `Iterator`, gets executed lazily, meaning that its effects won't be visible until it is iterated [INFO] [stderr] = note: `#[warn(map_unit_fn)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: you might have meant to use `Iterator::for_each` [INFO] [stderr] | [INFO] [stderr] 195 - paths.iter().map(|&path| { [INFO] [stderr] 195 + paths.iter().for_each(|&path| { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> utils/battery/src/battery.rs:199:13 [INFO] [stderr] | [INFO] [stderr] 199 | / &self.uevents.push( [INFO] [stderr] 200 | | Uevent { [INFO] [stderr] 201 | | path, [INFO] [stderr] 202 | | reader, [INFO] [stderr] 203 | | } [INFO] [stderr] 204 | | ); [INFO] [stderr] | |_____________^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 199 | let _ = &self.uevents.push( [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> utils/battery/src/battery.rs:257:13 [INFO] [stderr] | [INFO] [stderr] 257 | uevent.reader.seek(io::SeekFrom::Start(0)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 257 | let _ = uevent.reader.seek(io::SeekFrom::Start(0)); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> utils/battery/src/battery.rs:258:13 [INFO] [stderr] | [INFO] [stderr] 258 | uevent.reader.read_to_string(&mut buffer); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 258 | let _ = uevent.reader.read_to_string(&mut buffer); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `memory` (lib) generated 3 warnings (run `cargo fix --lib -p memory` to apply 1 suggestion) [INFO] [stderr] warning: `battery` (lib) generated 9 warnings (run `cargo fix --lib -p battery` to apply 1 suggestion) [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | FrontEnd::main_loop(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 4 | let _ = FrontEnd::main_loop(); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `apakabar` (bin "apakabar" test) generated 1 warning [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/apakabar-b0cee4650dcfb37e) [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] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/apakabar-6d8e815b882a170d) [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] [stderr] Doc-tests apakabar [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" "a4601e947e6948ceaf979b3c17b7ad63c2e17401e63248f3b194d78bd876de7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a4601e947e6948ceaf979b3c17b7ad63c2e17401e63248f3b194d78bd876de7d", kill_on_drop: false }` [INFO] [stdout] a4601e947e6948ceaf979b3c17b7ad63c2e17401e63248f3b194d78bd876de7d