[INFO] fetching crate ev3robot 0.3.1... [INFO] checking ev3robot-0.3.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate ev3robot 0.3.1 into /workspace/builds/worker-0-tc1/source [INFO] validating manifest of crates.io crate ev3robot 0.3.1 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 ev3robot 0.3.1 [INFO] finished tweaking crates.io crate ev3robot 0.3.1 [INFO] tweaked toml for crates.io crate ev3robot 0.3.1 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded darling_macro v0.14.4 [INFO] [stderr] Downloaded darling v0.14.4 [INFO] [stderr] Downloaded darling_core v0.14.4 [INFO] [stderr] Downloaded ev3robot_macros v0.3.1 [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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 236b51a094db952111940064486ecd45dd5c0acc0ab432e7648e597bf13b33e9 [INFO] running `Command { std: "docker" "start" "-a" "236b51a094db952111940064486ecd45dd5c0acc0ab432e7648e597bf13b33e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "236b51a094db952111940064486ecd45dd5c0acc0ab432e7648e597bf13b33e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "236b51a094db952111940064486ecd45dd5c0acc0ab432e7648e597bf13b33e9", kill_on_drop: false }` [INFO] [stdout] 236b51a094db952111940064486ecd45dd5c0acc0ab432e7648e597bf13b33e9 [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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d11bb615482495d33dade2b53297dae6519ee36ddf5756cbdd4c9fe2eea71a84 [INFO] running `Command { std: "docker" "start" "-a" "d11bb615482495d33dade2b53297dae6519ee36ddf5756cbdd4c9fe2eea71a84", kill_on_drop: false }` [INFO] [stderr] Compiling tap v1.0.1 [INFO] [stderr] Compiling 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] Compiling ev3robot_macros v0.3.1 [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/385fa9d845dd326c6bbfd58c22244215e431948a/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/385fa9d845dd326c6bbfd58c22244215e431948a/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 5.60s [INFO] running `Command { std: "docker" "inspect" "d11bb615482495d33dade2b53297dae6519ee36ddf5756cbdd4c9fe2eea71a84", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d11bb615482495d33dade2b53297dae6519ee36ddf5756cbdd4c9fe2eea71a84", kill_on_drop: false }` [INFO] [stdout] d11bb615482495d33dade2b53297dae6519ee36ddf5756cbdd4c9fe2eea71a84 [INFO] checking ev3robot-0.3.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate ev3robot 0.3.1 into /workspace/builds/worker-0-tc2/source [INFO] validating manifest of crates.io crate ev3robot 0.3.1 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate ev3robot 0.3.1 [INFO] finished tweaking crates.io crate ev3robot 0.3.1 [INFO] tweaked toml for crates.io crate ev3robot 0.3.1 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1ff4c06187c0d43453782a1ff5d87e8ca672a97203df66a56495b55d1e94829e [INFO] running `Command { std: "docker" "start" "-a" "1ff4c06187c0d43453782a1ff5d87e8ca672a97203df66a56495b55d1e94829e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1ff4c06187c0d43453782a1ff5d87e8ca672a97203df66a56495b55d1e94829e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1ff4c06187c0d43453782a1ff5d87e8ca672a97203df66a56495b55d1e94829e", kill_on_drop: false }` [INFO] [stdout] 1ff4c06187c0d43453782a1ff5d87e8ca672a97203df66a56495b55d1e94829e [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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c16b5ba84aa8a26172542b90744fa9d4177b92bd6c5cc38b83c945e188232bb9 [INFO] running `Command { std: "docker" "start" "-a" "c16b5ba84aa8a26172542b90744fa9d4177b92bd6c5cc38b83c945e188232bb9", kill_on_drop: false }` [INFO] [stderr] Compiling tap v1.0.1 [INFO] [stderr] Compiling 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] Compiling ev3robot_macros v0.3.1 [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/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/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/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/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[E0277]: a value of type `!` cannot be built from an iterator over elements of type `()` [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] | ^^^^ value of type `!` cannot be built from `std::iter::Iterator` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromIterator<()>` is not implemented for `!` [INFO] [stdout] = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 for more information) [INFO] [stdout] = help: did you intend to use the type `()` here instead? [INFO] [stdout] note: required by a bound in `MotorsBunch::::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 [INFO] [stdout] | ---- required by a bound in this associated function [INFO] [stdout] ... [INFO] [stdout] 23 | U: FromIterator, [INFO] [stdout] | ^^^^^^^^^^^^^^^ required by this bound in `MotorsBunch::::exec` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: a value of type `!` cannot be built from an iterator over elements of type `()` [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] | ^^^^ value of type `!` cannot be built from `std::iter::Iterator` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromIterator<()>` is not implemented for `!` [INFO] [stdout] = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 for more information) [INFO] [stdout] = help: did you intend to use the type `()` here instead? [INFO] [stdout] note: required by a bound in `MotorsBunch::::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 [INFO] [stdout] | ---- required by a bound in this associated function [INFO] [stdout] ... [INFO] [stdout] 23 | U: FromIterator, [INFO] [stdout] | ^^^^^^^^^^^^^^^ required by this bound in `MotorsBunch::::exec` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: a value of type `!` cannot be built from an iterator over elements of type `()` [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] | ^^^^ value of type `!` cannot be built from `std::iter::Iterator` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromIterator<()>` is not implemented for `!` [INFO] [stdout] = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 for more information) [INFO] [stdout] = help: did you intend to use the type `()` here instead? [INFO] [stdout] note: required by a bound in `MotorsBunch::::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 [INFO] [stdout] | ---- required by a bound in this associated function [INFO] [stdout] ... [INFO] [stdout] 23 | U: FromIterator, [INFO] [stdout] | ^^^^^^^^^^^^^^^ required by this bound in `MotorsBunch::::exec` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: a value of type `!` cannot be built from an iterator over elements of type `()` [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] | ^^^^ value of type `!` cannot be built from `std::iter::Iterator` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromIterator<()>` is not implemented for `!` [INFO] [stdout] = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 for more information) [INFO] [stdout] = help: did you intend to use the type `()` here instead? [INFO] [stdout] note: required by a bound in `MotorsBunch::::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 [INFO] [stdout] | ---- required by a bound in this associated function [INFO] [stdout] ... [INFO] [stdout] 23 | U: FromIterator, [INFO] [stdout] | ^^^^^^^^^^^^^^^ required by this bound in `MotorsBunch::::exec` [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 E0277`. [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] [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 E0277`. [INFO] [stdout] [INFO] [stderr] error: could not compile `ev3robot` (lib test) due to 3 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "c16b5ba84aa8a26172542b90744fa9d4177b92bd6c5cc38b83c945e188232bb9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c16b5ba84aa8a26172542b90744fa9d4177b92bd6c5cc38b83c945e188232bb9", kill_on_drop: false }` [INFO] [stdout] c16b5ba84aa8a26172542b90744fa9d4177b92bd6c5cc38b83c945e188232bb9