[INFO] fetching crate linkbot 0.0.2... [INFO] testing linkbot-0.0.2 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1 [INFO] extracting crate linkbot 0.0.2 into /workspace/builds/worker-3-tc1/source [INFO] started tweaking crates.io crate linkbot 0.0.2 [INFO] finished tweaking crates.io crate linkbot 0.0.2 [INFO] tweaked toml for crates.io crate linkbot 0.0.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate linkbot 0.0.2 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 1 package to latest compatible version [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8ea19475a3e2772e6dfae12cf52f5e2afcb11232edced20b908070601199b502 [INFO] running `Command { std: "docker" "start" "-a" "8ea19475a3e2772e6dfae12cf52f5e2afcb11232edced20b908070601199b502", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8ea19475a3e2772e6dfae12cf52f5e2afcb11232edced20b908070601199b502", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8ea19475a3e2772e6dfae12cf52f5e2afcb11232edced20b908070601199b502", kill_on_drop: false }` [INFO] [stdout] 8ea19475a3e2772e6dfae12cf52f5e2afcb11232edced20b908070601199b502 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d1e6f0738147fbd855737c1189c404b3fa2c46ce8c8c6bd4d85397be6af060a4 [INFO] running `Command { std: "docker" "start" "-a" "d1e6f0738147fbd855737c1189c404b3fa2c46ce8c8c6bd4d85397be6af060a4", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] Compiling linkbot v0.0.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/lib.rs:306:1 [INFO] [stdout] | [INFO] [stdout] 306 | extern { [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(missing_abi)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/lib.rs:326:41 [INFO] [stdout] | [INFO] [stdout] 326 | ... cb: extern fn(i32, i32, i32, *mut Inner), [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/lib.rs:329:49 [INFO] [stdout] | [INFO] [stdout] 329 | ... cb: Option, [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:65:27 [INFO] [stdout] | [INFO] [stdout] 65 | pub type ButtonCallback = FnMut(Button, ButtonState, u32); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 65 | pub type ButtonCallback = dyn FnMut(Button, ButtonState, u32); [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` block uses type `std::sync::Mutex`, which is not FFI-safe [INFO] [stdout] --> src/lib.rs:326:41 [INFO] [stdout] | [INFO] [stdout] 326 | ... cb: extern fn(i32, i32, i32, *mut Inner), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] = note: `#[warn(improper_ctypes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` block uses type `std::sync::Mutex`, which is not FFI-safe [INFO] [stdout] --> src/lib.rs:327:47 [INFO] [stdout] | [INFO] [stdout] 327 | ... userdata: *mut Inner) -> i32; [INFO] [stdout] | ^^^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` block uses type `std::sync::Mutex`, which is not FFI-safe [INFO] [stdout] --> src/lib.rs:329:42 [INFO] [stdout] | [INFO] [stdout] 329 | ... cb: Option, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` block uses type `std::sync::Mutex`, which is not FFI-safe [INFO] [stdout] --> src/lib.rs:330:48 [INFO] [stdout] | [INFO] [stdout] 330 | ... userdata: *mut Inner) -> i32; [INFO] [stdout] | ^^^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s [INFO] running `Command { std: "docker" "inspect" "d1e6f0738147fbd855737c1189c404b3fa2c46ce8c8c6bd4d85397be6af060a4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d1e6f0738147fbd855737c1189c404b3fa2c46ce8c8c6bd4d85397be6af060a4", kill_on_drop: false }` [INFO] [stdout] d1e6f0738147fbd855737c1189c404b3fa2c46ce8c8c6bd4d85397be6af060a4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6a1e8b1dfc96909f736a14ff978bc3b9f29a34f9d375d9d0d9e3a8e88bbef156 [INFO] running `Command { std: "docker" "start" "-a" "6a1e8b1dfc96909f736a14ff978bc3b9f29a34f9d375d9d0d9e3a8e88bbef156", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/lib.rs:306:1 [INFO] [stdout] | [INFO] [stdout] 306 | extern { [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(missing_abi)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/lib.rs:326:41 [INFO] [stdout] | [INFO] [stdout] 326 | ... cb: extern fn(i32, i32, i32, *mut Inner), [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/lib.rs:329:49 [INFO] [stdout] | [INFO] [stdout] 329 | ... cb: Option, [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:65:27 [INFO] [stdout] | [INFO] [stdout] 65 | pub type ButtonCallback = FnMut(Button, ButtonState, u32); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 65 | pub type ButtonCallback = dyn FnMut(Button, ButtonState, u32); [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` block uses type `std::sync::Mutex`, which is not FFI-safe [INFO] [stdout] --> src/lib.rs:326:41 [INFO] [stdout] | [INFO] [stdout] 326 | ... cb: extern fn(i32, i32, i32, *mut Inner), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] = note: `#[warn(improper_ctypes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` block uses type `std::sync::Mutex`, which is not FFI-safe [INFO] [stdout] --> src/lib.rs:327:47 [INFO] [stdout] | [INFO] [stdout] 327 | ... userdata: *mut Inner) -> i32; [INFO] [stdout] | ^^^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` block uses type `std::sync::Mutex`, which is not FFI-safe [INFO] [stdout] --> src/lib.rs:329:42 [INFO] [stdout] | [INFO] [stdout] 329 | ... cb: Option, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling linkbot v0.0.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: `extern` block uses type `std::sync::Mutex`, which is not FFI-safe [INFO] [stdout] --> src/lib.rs:330:48 [INFO] [stdout] | [INFO] [stdout] 330 | ... userdata: *mut Inner) -> i32; [INFO] [stdout] | ^^^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/lib.rs:306:1 [INFO] [stdout] | [INFO] [stdout] 306 | extern { [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(missing_abi)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/lib.rs:326:41 [INFO] [stdout] | [INFO] [stdout] 326 | ... cb: extern fn(i32, i32, i32, *mut Inner), [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/lib.rs:329:49 [INFO] [stdout] | [INFO] [stdout] 329 | ... cb: Option, [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:65:27 [INFO] [stdout] | [INFO] [stdout] 65 | pub type ButtonCallback = FnMut(Button, ButtonState, u32); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 65 | pub type ButtonCallback = dyn FnMut(Button, ButtonState, u32); [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `button` [INFO] [stdout] --> src/lib.rs:342:32 [INFO] [stdout] | [INFO] [stdout] 342 | l.set_button_handler( |button, state, timestamp| { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_button` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `state` [INFO] [stdout] --> src/lib.rs:342:40 [INFO] [stdout] | [INFO] [stdout] 342 | l.set_button_handler( |button, state, timestamp| { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_state` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `timestamp` [INFO] [stdout] --> src/lib.rs:342:47 [INFO] [stdout] | [INFO] [stdout] 342 | l.set_button_handler( |button, state, timestamp| { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timestamp` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` block uses type `std::sync::Mutex`, which is not FFI-safe [INFO] [stdout] --> src/lib.rs:326:41 [INFO] [stdout] | [INFO] [stdout] 326 | ... cb: extern fn(i32, i32, i32, *mut Inner), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] = note: `#[warn(improper_ctypes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` block uses type `std::sync::Mutex`, which is not FFI-safe [INFO] [stdout] --> src/lib.rs:327:47 [INFO] [stdout] | [INFO] [stdout] 327 | ... userdata: *mut Inner) -> i32; [INFO] [stdout] | ^^^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` block uses type `std::sync::Mutex`, which is not FFI-safe [INFO] [stdout] --> src/lib.rs:329:42 [INFO] [stdout] | [INFO] [stdout] 329 | ... cb: Option, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` block uses type `std::sync::Mutex`, which is not FFI-safe [INFO] [stdout] --> src/lib.rs:330:48 [INFO] [stdout] | [INFO] [stdout] 330 | ... userdata: *mut Inner) -> i32; [INFO] [stdout] | ^^^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:342:9 [INFO] [stdout] | [INFO] [stdout] 342 | / l.set_button_handler( |button, state, timestamp| { [INFO] [stdout] 343 | | println!("Button press!"); [INFO] [stdout] 344 | | }); [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] 342 | let _ = l.set_button_handler( |button, state, timestamp| { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:347:9 [INFO] [stdout] | [INFO] [stdout] 347 | l.move_motors(7, 90.0, 90.0, 90.0); [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] 347 | let _ = l.move_motors(7, 90.0, 90.0, 90.0); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:348:9 [INFO] [stdout] | [INFO] [stdout] 348 | l.move_wait(7); [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] 348 | let _ = l.move_wait(7); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:349:9 [INFO] [stdout] | [INFO] [stdout] 349 | l.move_motors(7, -90.0, -90.0, -90.0); [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] 349 | let _ = l.move_motors(7, -90.0, -90.0, -90.0); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:350:9 [INFO] [stdout] | [INFO] [stdout] 350 | l.move_wait(7); [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] 350 | let _ = l.move_wait(7); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:351:9 [INFO] [stdout] | [INFO] [stdout] 351 | l.unset_button_handler(); [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] 351 | let _ = l.unset_button_handler(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:352:9 [INFO] [stdout] | [INFO] [stdout] 352 | l.set_buzzer_frequency(440.0); [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] 352 | let _ = l.set_buzzer_frequency(440.0); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:354:9 [INFO] [stdout] | [INFO] [stdout] 354 | l.set_buzzer_frequency(0.0); [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] 354 | let _ = l.set_buzzer_frequency(0.0); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: linking with `cc` failed: exit status: 1 [INFO] [stdout] | [INFO] [stdout] = note: "cc" "-m64" "/tmp/rustcu1aB7f/symbols.o" "<2 object files omitted>" "-Wl,--as-needed" "-Wl,-Bdynamic" "-llinkbot" "-Wl,-Bstatic" "/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libtest-*,libgetopts-*,libunicode_width-*,librustc_std_workspace_std-*}.rlib" "/opt/rustwide/target/debug/deps/liblibc-a58beeab2e1413cc.rlib" "/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libstd-*,libpanic_unwind-*,libobject-*,libmemchr-*,libaddr2line-*,libgimli-*,libcfg_if-*,librustc_demangle-*,libstd_detect-*,libhashbrown-*,librustc_std_workspace_alloc-*,libminiz_oxide-*,libadler2-*,libunwind-*,liblibc-*,librustc_std_workspace_core-*,liballoc-*,libcore-*,libcompiler_builtins-*}.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-L" "/tmp/rustcu1aB7f/raw-dylibs" "-B/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/linkbot-6572e27f714b0ebf" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs" [INFO] [stdout] = note: some arguments are omitted. use `--verbose` to show all linker arguments [INFO] [stdout] = note: rust-lld: error: unable to find library -llinkbot [INFO] [stdout] collect2: error: ld returned 1 exit status [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `linkbot` (lib test) due to 1 previous error; 19 warnings emitted [INFO] running `Command { std: "docker" "inspect" "6a1e8b1dfc96909f736a14ff978bc3b9f29a34f9d375d9d0d9e3a8e88bbef156", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6a1e8b1dfc96909f736a14ff978bc3b9f29a34f9d375d9d0d9e3a8e88bbef156", kill_on_drop: false }` [INFO] [stdout] 6a1e8b1dfc96909f736a14ff978bc3b9f29a34f9d375d9d0d9e3a8e88bbef156