[INFO] fetching crate usbd-serial 0.1.1...
[INFO] testing usbd-serial-0.1.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate usbd-serial 0.1.1 into /workspace/builds/worker-83/source
[INFO] validating manifest of crates.io crate usbd-serial 0.1.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate usbd-serial 0.1.1
[INFO] finished tweaking crates.io crate usbd-serial 0.1.1
[INFO] tweaked toml for crates.io crate usbd-serial 0.1.1 written to /workspace/builds/worker-83/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a65493e59f9f05b6b71c7ee9e4bbc135604e2167783d4cd6853326cebde240e8
[INFO] running `Command { std: "docker" "start" "-a" "a65493e59f9f05b6b71c7ee9e4bbc135604e2167783d4cd6853326cebde240e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a65493e59f9f05b6b71c7ee9e4bbc135604e2167783d4cd6853326cebde240e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a65493e59f9f05b6b71c7ee9e4bbc135604e2167783d4cd6853326cebde240e8", kill_on_drop: false }`
[INFO] [stdout] a65493e59f9f05b6b71c7ee9e4bbc135604e2167783d4cd6853326cebde240e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ac2d6b24897782d6a7583d656af98c89c7cb0a9b7e22e2813ebd7eed229cbf4
[INFO] running `Command { std: "docker" "start" "-a" "5ac2d6b24897782d6a7583d656af98c89c7cb0a9b7e22e2813ebd7eed229cbf4", 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] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling usb-device v0.2.8
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal v0.2.6
[INFO] [stderr]    Compiling usbd-serial v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/serial_port.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 54 |             unsafe { mem::uninitialized() },
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/serial_port.rs:55:27
[INFO] [stdout]    |
[INFO] [stdout] 55 |             unsafe { mem::uninitialized() })
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/buffer.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         &self.store.borrow_mut()[self.wpos..self.wpos+count].copy_from_slice(&data[..count]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let _ = &self.store.borrow_mut()[self.wpos..self.wpos+count].copy_from_slice(&data[..count]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/serial_port.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             &data[..buf_data.len()].copy_from_slice(buf_data);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 137 |             let _ = &data[..buf_data.len()].copy_from_slice(buf_data);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.00s
[INFO] running `Command { std: "docker" "inspect" "5ac2d6b24897782d6a7583d656af98c89c7cb0a9b7e22e2813ebd7eed229cbf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ac2d6b24897782d6a7583d656af98c89c7cb0a9b7e22e2813ebd7eed229cbf4", kill_on_drop: false }`
[INFO] [stdout] 5ac2d6b24897782d6a7583d656af98c89c7cb0a9b7e22e2813ebd7eed229cbf4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f58c0804d57ae9a1f8840d1af9913083548d4b30ea7b28816ee4fedd0868b4d
[INFO] running `Command { std: "docker" "start" "-a" "9f58c0804d57ae9a1f8840d1af9913083548d4b30ea7b28816ee4fedd0868b4d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling usbd-serial v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/serial_port.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 54 |             unsafe { mem::uninitialized() },
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/serial_port.rs:55:27
[INFO] [stdout]    |
[INFO] [stdout] 55 |             unsafe { mem::uninitialized() })
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/buffer.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         &self.store.borrow_mut()[self.wpos..self.wpos+count].copy_from_slice(&data[..count]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let _ = &self.store.borrow_mut()[self.wpos..self.wpos+count].copy_from_slice(&data[..count]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/serial_port.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             &data[..buf_data.len()].copy_from_slice(buf_data);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 137 |             let _ = &data[..buf_data.len()].copy_from_slice(buf_data);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `generic_array`
[INFO] [stdout]    --> src/buffer.rs:141:38
[INFO] [stdout]     |
[INFO] [stdout] 141 |     type Buf = crate::buffer::Buffer<generic_array::typenum::consts::U5>;
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^ use of undeclared crate or module `generic_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/serial_port.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 54 |             unsafe { mem::uninitialized() },
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/serial_port.rs:55:27
[INFO] [stdout]    |
[INFO] [stdout] 55 |             unsafe { mem::uninitialized() })
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `usbd-serial` due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9f58c0804d57ae9a1f8840d1af9913083548d4b30ea7b28816ee4fedd0868b4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f58c0804d57ae9a1f8840d1af9913083548d4b30ea7b28816ee4fedd0868b4d", kill_on_drop: false }`
[INFO] [stdout] 9f58c0804d57ae9a1f8840d1af9913083548d4b30ea7b28816ee4fedd0868b4d