[INFO] crate linkbot 0.0.2 is already in cache
[INFO] checking linkbot-0.0.2 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate linkbot 0.0.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate linkbot 0.0.2 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[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/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e8b713cc05d21a5db55b93a3feb042aa3f0225e3b751368566420a4d50c9b929
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "e8b713cc05d21a5db55b93a3feb042aa3f0225e3b751368566420a4d50c9b929"`
[INFO] [stderr]     Checking linkbot v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:65:27
[INFO] [stderr]    |
[INFO] [stderr] 65 | pub type ButtonCallback = FnMut(Button, ButtonState, u32);
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Button, ButtonState, u32)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `std::sync::Mutex<u8>`, which is not FFI-safe
[INFO] [stderr]    --> src/lib.rs:326:41
[INFO] [stderr]     |
[INFO] [stderr] 326 | ...                   cb: extern fn(i32, i32, i32, *mut Inner),
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stderr]     = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]     = note: this struct has unspecified layout
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `std::sync::Mutex<u8>`, which is not FFI-safe
[INFO] [stderr]    --> src/lib.rs:327:47
[INFO] [stderr]     |
[INFO] [stderr] 327 | ...                   userdata: *mut Inner) -> i32;
[INFO] [stderr]     |                                 ^^^^^^^^^^ not FFI-safe
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]     = note: this struct has unspecified layout
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `std::sync::Mutex<u8>`, which is not FFI-safe
[INFO] [stderr]    --> src/lib.rs:329:42
[INFO] [stderr]     |
[INFO] [stderr] 329 | ...                   cb: Option<extern fn(i32, i32, i32, *mut Inner)>,
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]     = note: this struct has unspecified layout
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `std::sync::Mutex<u8>`, which is not FFI-safe
[INFO] [stderr]    --> src/lib.rs:330:48
[INFO] [stderr]     |
[INFO] [stderr] 330 | ...                   userdata: *mut Inner) -> i32;
[INFO] [stderr]     |                                 ^^^^^^^^^^ not FFI-safe
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]     = note: this struct has unspecified layout
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:65:27
[INFO] [stderr]    |
[INFO] [stderr] 65 | pub type ButtonCallback = FnMut(Button, ButtonState, u32);
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Button, ButtonState, u32)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `button`
[INFO] [stderr]    --> src/lib.rs:342:32
[INFO] [stderr]     |
[INFO] [stderr] 342 |         l.set_button_handler( |button, state, timestamp| {
[INFO] [stderr]     |                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_button`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]    --> src/lib.rs:342:40
[INFO] [stderr]     |
[INFO] [stderr] 342 |         l.set_button_handler( |button, state, timestamp| {
[INFO] [stderr]     |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `timestamp`
[INFO] [stderr]    --> src/lib.rs:342:47
[INFO] [stderr]     |
[INFO] [stderr] 342 |         l.set_button_handler( |button, state, timestamp| {
[INFO] [stderr]     |                                               ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timestamp`
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `std::sync::Mutex<u8>`, which is not FFI-safe
[INFO] [stderr]    --> src/lib.rs:326:41
[INFO] [stderr]     |
[INFO] [stderr] 326 | ...                   cb: extern fn(i32, i32, i32, *mut Inner),
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stderr]     = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]     = note: this struct has unspecified layout
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `std::sync::Mutex<u8>`, which is not FFI-safe
[INFO] [stderr]    --> src/lib.rs:327:47
[INFO] [stderr]     |
[INFO] [stderr] 327 | ...                   userdata: *mut Inner) -> i32;
[INFO] [stderr]     |                                 ^^^^^^^^^^ not FFI-safe
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]     = note: this struct has unspecified layout
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `std::sync::Mutex<u8>`, which is not FFI-safe
[INFO] [stderr]    --> src/lib.rs:329:42
[INFO] [stderr]     |
[INFO] [stderr] 329 | ...                   cb: Option<extern fn(i32, i32, i32, *mut Inner)>,
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]     = note: this struct has unspecified layout
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `std::sync::Mutex<u8>`, which is not FFI-safe
[INFO] [stderr]    --> src/lib.rs:330:48
[INFO] [stderr]     |
[INFO] [stderr] 330 | ...                   userdata: *mut Inner) -> i32;
[INFO] [stderr]     |                                 ^^^^^^^^^^ not FFI-safe
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]     = note: this struct has unspecified layout
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:342:9
[INFO] [stderr]     |
[INFO] [stderr] 342 | /         l.set_button_handler( |button, state, timestamp| {
[INFO] [stderr] 343 | |             println!("Button press!");
[INFO] [stderr] 344 | |         });
[INFO] [stderr]     | |___________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:347:9
[INFO] [stderr]     |
[INFO] [stderr] 347 |         l.move_motors(7, 90.0, 90.0, 90.0);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:348:9
[INFO] [stderr]     |
[INFO] [stderr] 348 |         l.move_wait(7);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:349:9
[INFO] [stderr]     |
[INFO] [stderr] 349 |         l.move_motors(7, -90.0, -90.0, -90.0);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:350:9
[INFO] [stderr]     |
[INFO] [stderr] 350 |         l.move_wait(7);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:351:9
[INFO] [stderr]     |
[INFO] [stderr] 351 |         l.unset_button_handler();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:352:9
[INFO] [stderr]     |
[INFO] [stderr] 352 |         l.set_buzzer_frequency(440.0);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:354:9
[INFO] [stderr]     |
[INFO] [stderr] 354 |         l.set_buzzer_frequency(0.0);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "e8b713cc05d21a5db55b93a3feb042aa3f0225e3b751368566420a4d50c9b929"`
[INFO] running `"docker" "rm" "-f" "e8b713cc05d21a5db55b93a3feb042aa3f0225e3b751368566420a4d50c9b929"`
[INFO] [stdout] e8b713cc05d21a5db55b93a3feb042aa3f0225e3b751368566420a4d50c9b929
