Sep 02 08:34:51.508 INFO checking linkbot-0.0.2 against try#952c7dbfa2628309f557b367929ffc17af20b332 for pr-53851
Sep 02 08:34:51.508 INFO running: cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets
Sep 02 08:34:51.508 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53851/try#952c7dbfa2628309f557b367929ffc17af20b332:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-3/try#952c7dbfa2628309f557b367929ffc17af20b332:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 08:34:51.714 INFO blam! c54588b2c153c736a9944857763a80d055fa6a1a05c0978ddbc6aec7c5bf61fd
Sep 02 08:34:51.716 INFO running `"docker" "start" "-a" "c54588b2c153c736a9944857763a80d055fa6a1a05c0978ddbc6aec7c5bf61fd"`
Sep 02 08:34:52.411 INFO kablam!     Checking linkbot v0.0.2 (file:///source)
Sep 02 08:34:53.107 INFO kablam! warning: unused variable: `button`
Sep 02 08:34:53.107 INFO kablam!    --> src/lib.rs:342:32
Sep 02 08:34:53.107 INFO kablam!     |
Sep 02 08:34:53.107 INFO kablam! 342 |         l.set_button_handler( |button, state, timestamp| {
Sep 02 08:34:53.107 INFO kablam!     |                                ^^^^^^ help: consider using `_button` instead
Sep 02 08:34:53.107 INFO kablam!     |
Sep 02 08:34:53.107 INFO kablam!     = note: #[warn(unused_variables)] on by default
Sep 02 08:34:53.107 INFO kablam! 
Sep 02 08:34:53.107 INFO kablam! warning: unused variable: `state`
Sep 02 08:34:53.107 INFO kablam!    --> src/lib.rs:342:40
Sep 02 08:34:53.107 INFO kablam!     |
Sep 02 08:34:53.107 INFO kablam! 342 |         l.set_button_handler( |button, state, timestamp| {
Sep 02 08:34:53.108 INFO kablam!     |                                        ^^^^^ help: consider using `_state` instead
Sep 02 08:34:53.108 INFO kablam! 
Sep 02 08:34:53.108 INFO kablam! warning: unused variable: `timestamp`
Sep 02 08:34:53.108 INFO kablam!    --> src/lib.rs:342:47
Sep 02 08:34:53.108 INFO kablam!     |
Sep 02 08:34:53.108 INFO kablam! 342 |         l.set_button_handler( |button, state, timestamp| {
Sep 02 08:34:53.108 INFO kablam!     |                                               ^^^^^^^^^ help: consider using `_timestamp` instead
Sep 02 08:34:53.108 INFO kablam! 
Sep 02 08:34:53.134 INFO kablam! warning: `extern` block uses type `std::sync::Mutex<u8>` which is not FFI-safe: this struct has unspecified layout
Sep 02 08:34:53.134 INFO kablam!    --> src/lib.rs:326:41
Sep 02 08:34:53.134 INFO kablam!     |
Sep 02 08:34:53.134 INFO kablam! 326 |                                     cb: extern fn(i32, i32, i32, *mut Inner),
Sep 02 08:34:53.134 INFO kablam!     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 02 08:34:53.134 INFO kablam!     |
Sep 02 08:34:53.134 INFO kablam!     = note: #[warn(improper_ctypes)] on by default
Sep 02 08:34:53.134 INFO kablam!     = help: consider adding a #[repr(C)] or #[repr(transparent)] attribute to this struct
Sep 02 08:34:53.134 INFO kablam! 
Sep 02 08:34:53.134 INFO kablam! warning: `extern` block uses type `std::sync::Mutex<u8>` which is not FFI-safe: this struct has unspecified layout
Sep 02 08:34:53.134 INFO kablam!    --> src/lib.rs:327:47
Sep 02 08:34:53.134 INFO kablam!     |
Sep 02 08:34:53.134 INFO kablam! 327 |                                     userdata: *mut Inner) -> i32;
Sep 02 08:34:53.134 INFO kablam!     |                                               ^^^^^^^^^^
Sep 02 08:34:53.134 INFO kablam!     |
Sep 02 08:34:53.134 INFO kablam!     = help: consider adding a #[repr(C)] or #[repr(transparent)] attribute to this struct
Sep 02 08:34:53.134 INFO kablam! 
Sep 02 08:34:53.134 INFO kablam! warning: `extern` block uses type `std::sync::Mutex<u8>` which is not FFI-safe: this struct has unspecified layout
Sep 02 08:34:53.134 INFO kablam!    --> src/lib.rs:329:42
Sep 02 08:34:53.134 INFO kablam!     |
Sep 02 08:34:53.135 INFO kablam! 329 |                                      cb: Option<extern fn(i32, i32, i32, *mut Inner)>,
Sep 02 08:34:53.135 INFO kablam!     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 02 08:34:53.135 INFO kablam!     |
Sep 02 08:34:53.135 INFO kablam!     = help: consider adding a #[repr(C)] or #[repr(transparent)] attribute to this struct
Sep 02 08:34:53.135 INFO kablam! 
Sep 02 08:34:53.135 INFO kablam! warning: `extern` block uses type `std::sync::Mutex<u8>` which is not FFI-safe: this struct has unspecified layout
Sep 02 08:34:53.135 INFO kablam!    --> src/lib.rs:330:48
Sep 02 08:34:53.135 INFO kablam!     |
Sep 02 08:34:53.135 INFO kablam! 330 |                                      userdata: *mut Inner) -> i32;
Sep 02 08:34:53.135 INFO kablam!     |                                                ^^^^^^^^^^
Sep 02 08:34:53.135 INFO kablam!     |
Sep 02 08:34:53.135 INFO kablam!     = help: consider adding a #[repr(C)] or #[repr(transparent)] attribute to this struct
Sep 02 08:34:53.135 INFO kablam! 
Sep 02 08:34:53.135 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 02 08:34:53.135 INFO kablam!    --> src/lib.rs:342:9
Sep 02 08:34:53.135 INFO kablam!     |
Sep 02 08:34:53.135 INFO kablam! 342 | /         l.set_button_handler( |button, state, timestamp| {
Sep 02 08:34:53.135 INFO kablam! 343 | |             println!("Button press!");
Sep 02 08:34:53.135 INFO kablam! 344 | |         });
Sep 02 08:34:53.135 INFO kablam!     | |___________^
Sep 02 08:34:53.135 INFO kablam!     |
Sep 02 08:34:53.135 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 02 08:34:53.135 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 02 08:34:53.135 INFO kablam! 
Sep 02 08:34:53.135 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 02 08:34:53.135 INFO kablam!    --> src/lib.rs:347:9
Sep 02 08:34:53.135 INFO kablam!     |
Sep 02 08:34:53.135 INFO kablam! 347 |         l.move_motors(7, 90.0, 90.0, 90.0);
Sep 02 08:34:53.135 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 02 08:34:53.135 INFO kablam!     |
Sep 02 08:34:53.135 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 02 08:34:53.136 INFO kablam! 
Sep 02 08:34:53.136 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 02 08:34:53.136 INFO kablam!    --> src/lib.rs:348:9
Sep 02 08:34:53.136 INFO kablam!     |
Sep 02 08:34:53.136 INFO kablam! 348 |         l.move_wait(7);
Sep 02 08:34:53.136 INFO kablam!     |         ^^^^^^^^^^^^^^^
Sep 02 08:34:53.136 INFO kablam!     |
Sep 02 08:34:53.136 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 02 08:34:53.136 INFO kablam! 
Sep 02 08:34:53.136 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 02 08:34:53.136 INFO kablam!    --> src/lib.rs:349:9
Sep 02 08:34:53.136 INFO kablam!     |
Sep 02 08:34:53.136 INFO kablam! 349 |         l.move_motors(7, -90.0, -90.0, -90.0);
Sep 02 08:34:53.136 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 02 08:34:53.136 INFO kablam!     |
Sep 02 08:34:53.136 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 02 08:34:53.136 INFO kablam! 
Sep 02 08:34:53.136 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 02 08:34:53.136 INFO kablam!    --> src/lib.rs:350:9
Sep 02 08:34:53.136 INFO kablam!     |
Sep 02 08:34:53.136 INFO kablam! 350 |         l.move_wait(7);
Sep 02 08:34:53.136 INFO kablam!     |         ^^^^^^^^^^^^^^^
Sep 02 08:34:53.136 INFO kablam!     |
Sep 02 08:34:53.136 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 02 08:34:53.136 INFO kablam! 
Sep 02 08:34:53.136 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 02 08:34:53.136 INFO kablam!    --> src/lib.rs:351:9
Sep 02 08:34:53.136 INFO kablam!     |
Sep 02 08:34:53.136 INFO kablam! 351 |         l.unset_button_handler();
Sep 02 08:34:53.136 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 02 08:34:53.137 INFO kablam!     |
Sep 02 08:34:53.137 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 02 08:34:53.137 INFO kablam! 
Sep 02 08:34:53.137 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 02 08:34:53.137 INFO kablam!    --> src/lib.rs:352:9
Sep 02 08:34:53.137 INFO kablam!     |
Sep 02 08:34:53.137 INFO kablam! 352 |         l.set_buzzer_frequency(440.0);
Sep 02 08:34:53.137 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 02 08:34:53.137 INFO kablam!     |
Sep 02 08:34:53.137 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 02 08:34:53.137 INFO kablam! 
Sep 02 08:34:53.137 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 02 08:34:53.137 INFO kablam!    --> src/lib.rs:354:9
Sep 02 08:34:53.137 INFO kablam!     |
Sep 02 08:34:53.137 INFO kablam! 354 |         l.set_buzzer_frequency(0.0);
Sep 02 08:34:53.137 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 02 08:34:53.137 INFO kablam!     |
Sep 02 08:34:53.137 INFO kablam! warning: `extern` block uses type `std::sync::Mutex<u8>` which is not FFI-safe: this struct has unspecified layout
Sep 02 08:34:53.137 INFO kablam!    --> src/lib.rs:326:41
Sep 02 08:34:53.137 INFO kablam!     |
Sep 02 08:34:53.137 INFO kablam! 326 |                                     cb: extern fn(i32, i32, i32, *mut Inner),
Sep 02 08:34:53.137 INFO kablam!     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 02 08:34:53.137 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 02 08:34:53.137 INFO kablam!     |
Sep 02 08:34:53.137 INFO kablam! 
Sep 02 08:34:53.137 INFO kablam!     = note: #[warn(improper_ctypes)] on by default
Sep 02 08:34:53.137 INFO kablam!     = help: consider adding a #[repr(C)] or #[repr(transparent)] attribute to this struct
Sep 02 08:34:53.137 INFO kablam! 
Sep 02 08:34:53.137 INFO kablam! warning: `extern` block uses type `std::sync::Mutex<u8>` which is not FFI-safe: this struct has unspecified layout
Sep 02 08:34:53.137 INFO kablam!    --> src/lib.rs:327:47
Sep 02 08:34:53.137 INFO kablam!     |
Sep 02 08:34:53.138 INFO kablam! 327 |                                     userdata: *mut Inner) -> i32;
Sep 02 08:34:53.138 INFO kablam!     |                                               ^^^^^^^^^^
Sep 02 08:34:53.138 INFO kablam!     |
Sep 02 08:34:53.138 INFO kablam!     = help: consider adding a #[repr(C)] or #[repr(transparent)] attribute to this struct
Sep 02 08:34:53.138 INFO kablam! 
Sep 02 08:34:53.138 INFO kablam! warning: `extern` block uses type `std::sync::Mutex<u8>` which is not FFI-safe: this struct has unspecified layout
Sep 02 08:34:53.138 INFO kablam!    --> src/lib.rs:329:42
Sep 02 08:34:53.138 INFO kablam!     |
Sep 02 08:34:53.138 INFO kablam! 329 |                                      cb: Option<extern fn(i32, i32, i32, *mut Inner)>,
Sep 02 08:34:53.138 INFO kablam!     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 02 08:34:53.138 INFO kablam!     |
Sep 02 08:34:53.138 INFO kablam!     = help: consider adding a #[repr(C)] or #[repr(transparent)] attribute to this struct
Sep 02 08:34:53.138 INFO kablam! 
Sep 02 08:34:53.138 INFO kablam! warning: `extern` block uses type `std::sync::Mutex<u8>` which is not FFI-safe: this struct has unspecified layout
Sep 02 08:34:53.138 INFO kablam!    --> src/lib.rs:330:48
Sep 02 08:34:53.138 INFO kablam!     |
Sep 02 08:34:53.138 INFO kablam! 330 |                                      userdata: *mut Inner) -> i32;
Sep 02 08:34:53.138 INFO kablam!     |                                                ^^^^^^^^^^
Sep 02 08:34:53.138 INFO kablam!     |
Sep 02 08:34:53.138 INFO kablam!     = help: consider adding a #[repr(C)] or #[repr(transparent)] attribute to this struct
Sep 02 08:34:53.138 INFO kablam! 
Sep 02 08:34:53.155 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
Sep 02 08:34:53.159 INFO kablam! su: No module specific data is present
Sep 02 08:34:53.586 INFO running `"docker" "rm" "-f" "c54588b2c153c736a9944857763a80d055fa6a1a05c0978ddbc6aec7c5bf61fd"`
Sep 02 08:34:53.685 INFO blam! c54588b2c153c736a9944857763a80d055fa6a1a05c0978ddbc6aec7c5bf61fd