[INFO] fetching crate etherdream 0.1.1...
[INFO] checking etherdream-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate etherdream 0.1.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate etherdream 0.1.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate etherdream 0.1.1
[INFO] finished tweaking crates.io crate etherdream 0.1.1
[INFO] tweaked toml for crates.io crate etherdream 0.1.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages
[INFO] [stderr]       Adding byteorder v0.5.3 (latest: v1.5.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding ilda v0.0.2 (latest: v0.2.0)
[INFO] [stderr]       Adding log v0.3.9 (latest: v0.4.21)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded point v0.3.1
[INFO] [stderr]   Downloaded ilda v0.0.2
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de29b9a5e1054ba6f494b50e6ffae10bfa22e4ab78debbf33a6356edcb98c2b3
[INFO] running `Command { std: "docker" "start" "-a" "de29b9a5e1054ba6f494b50e6ffae10bfa22e4ab78debbf33a6356edcb98c2b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de29b9a5e1054ba6f494b50e6ffae10bfa22e4ab78debbf33a6356edcb98c2b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de29b9a5e1054ba6f494b50e6ffae10bfa22e4ab78debbf33a6356edcb98c2b3", kill_on_drop: false }`
[INFO] [stdout] de29b9a5e1054ba6f494b50e6ffae10bfa22e4ab78debbf33a6356edcb98c2b3
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] affec29cea5a238b5c90fb686fb8a168c6eae6a8e287c2f753826d4cf9b7d054
[INFO] running `Command { std: "docker" "start" "-a" "affec29cea5a238b5c90fb686fb8a168c6eae6a8e287c2f753826d4cf9b7d054", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking point v0.3.1
[INFO] [stderr]     Checking ilda v0.0.2
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking etherdream v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:51:26
[INFO] [stdout]    |
[INFO] [stdout] 51 |     write!(f, "{}", self.description())
[INFO] [stdout]    |                          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:51:26
[INFO] [stdout]    |
[INFO] [stdout] 51 |     write!(f, "{}", self.description())
[INFO] [stdout]    |                          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `hello` is never used
[INFO] [stdout]    --> src/dac.rs:184:6
[INFO] [stdout]     |
[INFO] [stdout] 29  | impl Dac {
[INFO] [stdout]     | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 184 |   fn hello(&mut self) -> Result<DacResponse, EtherdreamError> {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `hello` is never used
[INFO] [stdout]    --> src/dac.rs:184:6
[INFO] [stdout]     |
[INFO] [stdout] 29  | impl Dac {
[INFO] [stdout]     | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 184 |   fn hello(&mut self) -> Result<DacResponse, EtherdreamError> {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `etherdream::protocol::Y_MAX`
[INFO] [stdout]   --> examples/ball.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use etherdream::protocol::Y_MAX;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `etherdream::protocol::Y_MIN`
[INFO] [stdout]   --> examples/ball.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use etherdream::protocol::Y_MIN;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep`
[INFO] [stdout]    --> examples/ball.rs:126:15
[INFO] [stdout]     |
[INFO] [stdout] 126 |       thread::sleep_ms(10);
[INFO] [stdout]     |               ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> examples/ball.rs:117:7
[INFO] [stdout]     |
[INFO] [stdout] 117 |   let mut circle = Arc::new(RwLock::new(Circle::new(8000)));
[INFO] [stdout]     |       ----^^^^^^
[INFO] [stdout]     |       |
[INFO] [stdout]     |       help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> examples/ball.rs:118:7
[INFO] [stdout]     |
[INFO] [stdout] 118 |   let mut circle2 = circle.clone();
[INFO] [stdout]     |       ----^^^^^^^
[INFO] [stdout]     |       |
[INFO] [stdout]     |       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> examples/ball.rs:130:3
[INFO] [stdout]     |
[INFO] [stdout] 130 | /   dac.play_function(|num_points: u16| {
[INFO] [stdout] 131 | |     circle2.read().unwrap().get_points(num_points, &mut pos)
[INFO] [stdout] 132 | |   });
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 130 |   let _ = dac.play_function(|num_points: u16| {
[INFO] [stdout]     |   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `etherdream::protocol::X_MAX`
[INFO] [stdout]  --> examples/spiral.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use etherdream::protocol::X_MAX;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `etherdream::protocol::Y_MAX`
[INFO] [stdout]  --> examples/spiral.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use etherdream::protocol::Y_MAX;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `pos` should have an upper case name
[INFO] [stdout]   --> examples/circle.rs:32:14
[INFO] [stdout]    |
[INFO] [stdout] 32 |   static mut pos: i32 = 0;
[INFO] [stdout]    |              ^^^ help: convert the identifier to upper case: `POS`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `pos` should have an upper case name
[INFO] [stdout]   --> examples/spiral.rs:40:14
[INFO] [stdout]    |
[INFO] [stdout] 40 |   static mut pos: i32 = 0;
[INFO] [stdout]    |              ^^^ help: convert the identifier to upper case: `POS`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "affec29cea5a238b5c90fb686fb8a168c6eae6a8e287c2f753826d4cf9b7d054", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "affec29cea5a238b5c90fb686fb8a168c6eae6a8e287c2f753826d4cf9b7d054", kill_on_drop: false }`
[INFO] [stdout] affec29cea5a238b5c90fb686fb8a168c6eae6a8e287c2f753826d4cf9b7d054