[INFO] cloning repository https://github.com/Nikitat0/ev3robot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nikitat0/ev3robot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikitat0%2Fev3robot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikitat0%2Fev3robot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa7dd5a3f10e3582551159f1aad756d1b131c8be
[INFO] checking Nikitat0/ev3robot against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikitat0%2Fev3robot" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nikitat0/ev3robot on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nikitat0/ev3robot
[INFO] finished tweaking git repo https://github.com/Nikitat0/ev3robot
[INFO] tweaked toml for git repo https://github.com/Nikitat0/ev3robot written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding convert_case v0.4.0 (latest: v0.6.0)
[INFO] [stderr]       Adding darling v0.14.4 (latest: v0.20.8)
[INFO] [stderr]       Adding darling_core v0.14.4 (latest: v0.20.8)
[INFO] [stderr]       Adding darling_macro v0.14.4 (latest: v0.20.8)
[INFO] [stderr]       Adding strsim v0.10.0 (latest: v0.11.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69bdf8d612881da28ba7b4b3f8a456f37841c12cebb50c22c0608470c1a82a3a
[INFO] running `Command { std: "docker" "start" "-a" "69bdf8d612881da28ba7b4b3f8a456f37841c12cebb50c22c0608470c1a82a3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69bdf8d612881da28ba7b4b3f8a456f37841c12cebb50c22c0608470c1a82a3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69bdf8d612881da28ba7b4b3f8a456f37841c12cebb50c22c0608470c1a82a3a", kill_on_drop: false }`
[INFO] [stdout] 69bdf8d612881da28ba7b4b3f8a456f37841c12cebb50c22c0608470c1a82a3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cbb38399ad23da4cbab16ab0c9addde16dfe891fc1611e63063bf5d43488c042
[INFO] running `Command { std: "docker" "start" "-a" "cbb38399ad23da4cbab16ab0c9addde16dfe891fc1611e63063bf5d43488c042", kill_on_drop: false }`
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]     Checking proc-macro2 v1.0.79
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]     Checking syn v1.0.109
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling darling v0.14.4
[INFO] [stderr]    Compiling ev3robot_macros v0.3.1 (/opt/rustwide/workdir/macros)
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking ev3robot v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/device/attribute.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/device/attribute.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.76s
[INFO] running `Command { std: "docker" "inspect" "cbb38399ad23da4cbab16ab0c9addde16dfe891fc1611e63063bf5d43488c042", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbb38399ad23da4cbab16ab0c9addde16dfe891fc1611e63063bf5d43488c042", kill_on_drop: false }`
[INFO] [stdout] cbb38399ad23da4cbab16ab0c9addde16dfe891fc1611e63063bf5d43488c042
[INFO] checking Nikitat0/ev3robot against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikitat0%2Fev3robot" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nikitat0/ev3robot on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nikitat0/ev3robot
[INFO] finished tweaking git repo https://github.com/Nikitat0/ev3robot
[INFO] tweaked toml for git repo https://github.com/Nikitat0/ev3robot written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 883f27971d9f19eecc40352f45196b4eb5d76529a14b35922e6110d65d7de84e
[INFO] running `Command { std: "docker" "start" "-a" "883f27971d9f19eecc40352f45196b4eb5d76529a14b35922e6110d65d7de84e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "883f27971d9f19eecc40352f45196b4eb5d76529a14b35922e6110d65d7de84e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "883f27971d9f19eecc40352f45196b4eb5d76529a14b35922e6110d65d7de84e", kill_on_drop: false }`
[INFO] [stdout] 883f27971d9f19eecc40352f45196b4eb5d76529a14b35922e6110d65d7de84e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d0b33dbdd8cf3e08575f8ab0747e1ef5305cf0397b439dce360ee743651233c
[INFO] running `Command { std: "docker" "start" "-a" "7d0b33dbdd8cf3e08575f8ab0747e1ef5305cf0397b439dce360ee743651233c", kill_on_drop: false }`
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking proc-macro2 v1.0.79
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking darling_core v0.14.4
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]    Compiling darling v0.14.4
[INFO] [stderr]     Checking ev3robot_macros v0.3.1 (/opt/rustwide/workdir/macros)
[INFO] [stderr]     Checking ev3robot v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/device/attribute.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/device/attribute.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/motor/bunch.rs:48:14
[INFO] [stdout]    |
[INFO] [stdout] 48 |         self.exec(|it| it.is_running().map(|b| is_running |= b))?;
[INFO] [stdout]    |              ^^^^ cannot infer type of the type parameter `U` declared on the method `exec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: FromIterator<()>`
[INFO] [stdout] note: required by a bound in `MotorsBunch::<Motor>::exec`
[INFO] [stdout]   --> src/motor/bunch.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn exec<'a, T, U, F>(&'a mut self, f: F) -> anyhow::Result<U>
[INFO] [stdout]    |            ---- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout] 23 |         U: FromIterator<T>,
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^ required by this bound in `MotorsBunch::<Motor>::exec`
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]    |
[INFO] [stdout] 48 |         self.exec::<(), U, _>(|it| it.is_running().map(|b| is_running |= b))?;
[INFO] [stdout]    |                  ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/motor/bunch.rs:48:14
[INFO] [stdout]    |
[INFO] [stdout] 48 |         self.exec(|it| it.is_running().map(|b| is_running |= b))?;
[INFO] [stdout]    |              ^^^^ cannot infer type of the type parameter `U` declared on the method `exec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: FromIterator<()>`
[INFO] [stdout] note: required by a bound in `MotorsBunch::<Motor>::exec`
[INFO] [stdout]   --> src/motor/bunch.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn exec<'a, T, U, F>(&'a mut self, f: F) -> anyhow::Result<U>
[INFO] [stdout]    |            ---- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout] 23 |         U: FromIterator<T>,
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^ required by this bound in `MotorsBunch::<Motor>::exec`
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]    |
[INFO] [stdout] 48 |         self.exec::<(), U, _>(|it| it.is_running().map(|b| is_running |= b))?;
[INFO] [stdout]    |                  ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/motor/bunch.rs:56:14
[INFO] [stdout]    |
[INFO] [stdout] 56 |         self.exec(|it| it.is_holding().map(|b| is_holding |= b))?;
[INFO] [stdout]    |              ^^^^ cannot infer type of the type parameter `U` declared on the method `exec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: FromIterator<()>`
[INFO] [stdout] note: required by a bound in `MotorsBunch::<Motor>::exec`
[INFO] [stdout]   --> src/motor/bunch.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn exec<'a, T, U, F>(&'a mut self, f: F) -> anyhow::Result<U>
[INFO] [stdout]    |            ---- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout] 23 |         U: FromIterator<T>,
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^ required by this bound in `MotorsBunch::<Motor>::exec`
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]    |
[INFO] [stdout] 56 |         self.exec::<(), U, _>(|it| it.is_holding().map(|b| is_holding |= b))?;
[INFO] [stdout]    |                  ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/motor/bunch.rs:56:14
[INFO] [stdout]    |
[INFO] [stdout] 56 |         self.exec(|it| it.is_holding().map(|b| is_holding |= b))?;
[INFO] [stdout]    |              ^^^^ cannot infer type of the type parameter `U` declared on the method `exec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: FromIterator<()>`
[INFO] [stdout] note: required by a bound in `MotorsBunch::<Motor>::exec`
[INFO] [stdout]   --> src/motor/bunch.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn exec<'a, T, U, F>(&'a mut self, f: F) -> anyhow::Result<U>
[INFO] [stdout]    |            ---- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout] 23 |         U: FromIterator<T>,
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^ required by this bound in `MotorsBunch::<Motor>::exec`
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]    |
[INFO] [stdout] 56 |         self.exec::<(), U, _>(|it| it.is_holding().map(|b| is_holding |= b))?;
[INFO] [stdout]    |                  ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ev3robot` (lib) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `ev3robot` (lib test) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "7d0b33dbdd8cf3e08575f8ab0747e1ef5305cf0397b439dce360ee743651233c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d0b33dbdd8cf3e08575f8ab0747e1ef5305cf0397b439dce360ee743651233c", kill_on_drop: false }`
[INFO] [stdout] 7d0b33dbdd8cf3e08575f8ab0747e1ef5305cf0397b439dce360ee743651233c