[INFO] fetching crate lc709203 0.3.0... [INFO] testing lc709203-0.3.0 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate lc709203 0.3.0 into /workspace/builds/worker-4-tc2/source [INFO] started tweaking crates.io crate lc709203 0.3.0 [INFO] finished tweaking crates.io crate lc709203 0.3.0 [INFO] tweaked toml for crates.io crate lc709203 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate lc709203 0.3.0 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate lc709203 0.3.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4106e954fb595661f4792d5a1d1ea4f4003cb78cb692d5bf1104a688c81d0a62 [INFO] running `Command { std: "docker" "start" "-a" "4106e954fb595661f4792d5a1d1ea4f4003cb78cb692d5bf1104a688c81d0a62", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4106e954fb595661f4792d5a1d1ea4f4003cb78cb692d5bf1104a688c81d0a62", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4106e954fb595661f4792d5a1d1ea4f4003cb78cb692d5bf1104a688c81d0a62", kill_on_drop: false }` [INFO] [stdout] 4106e954fb595661f4792d5a1d1ea4f4003cb78cb692d5bf1104a688c81d0a62 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 417bbc575ae97c9df6804ec0e1d77eed28ee7c95dbaf2f8cd49e68fc3f5154e5 [INFO] running `Command { std: "docker" "start" "-a" "417bbc575ae97c9df6804ec0e1d77eed28ee7c95dbaf2f8cd49e68fc3f5154e5", kill_on_drop: false }` [INFO] [stderr] Compiling embedded-hal v1.0.0 [INFO] [stderr] Compiling log v0.4.27 [INFO] [stderr] Compiling lc709203 v0.3.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s [INFO] running `Command { std: "docker" "inspect" "417bbc575ae97c9df6804ec0e1d77eed28ee7c95dbaf2f8cd49e68fc3f5154e5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "417bbc575ae97c9df6804ec0e1d77eed28ee7c95dbaf2f8cd49e68fc3f5154e5", kill_on_drop: false }` [INFO] [stdout] 417bbc575ae97c9df6804ec0e1d77eed28ee7c95dbaf2f8cd49e68fc3f5154e5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 81b56acc3ad199cb7e70b1ad14203f743eb2ceeae6a29c2256633d0a1fa30518 [INFO] running `Command { std: "docker" "start" "-a" "81b56acc3ad199cb7e70b1ad14203f743eb2ceeae6a29c2256633d0a1fa30518", kill_on_drop: false }` [INFO] [stderr] Compiling lc709203 v0.3.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s [INFO] running `Command { std: "docker" "inspect" "81b56acc3ad199cb7e70b1ad14203f743eb2ceeae6a29c2256633d0a1fa30518", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "81b56acc3ad199cb7e70b1ad14203f743eb2ceeae6a29c2256633d0a1fa30518", kill_on_drop: false }` [INFO] [stdout] 81b56acc3ad199cb7e70b1ad14203f743eb2ceeae6a29c2256633d0a1fa30518 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 939d48c8abab2bf04dee29427a81a573526d51e4045444e94eeb768b6599e515 [INFO] running `Command { std: "docker" "start" "-a" "939d48c8abab2bf04dee29427a81a573526d51e4045444e94eeb768b6599e515", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lc709203-3494f1d7043ded2e) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests lc709203 [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - (line 7) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - (line 7) stdout ---- [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `I2C` [INFO] [stdout] --> src/lib.rs:11:11 [INFO] [stdout] | [INFO] [stdout] 7 | let i2c = I2C::new(); [INFO] [stdout] | ^^^ use of undeclared type `I2C` [INFO] [stdout] | [INFO] [stdout] help: there is an enum variant `lc709203::TemperatureMode::I2C`; try using the variant's enum [INFO] [stdout] | [INFO] [stdout] 7 - let i2c = I2C::new(); [INFO] [stdout] 7 + let i2c = lc709203::TemperatureMode::new(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`) [INFO] [stdout] --> src/lib.rs:16:21 [INFO] [stdout] | [INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_7_0() { [INFO] [stdout] | --------------------------------- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] ... [INFO] [stdout] 12 | .build(&mut i2c)?; // initialize the lc709203 chip [INFO] [stdout] | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] | [INFO] [stdout] help: consider adding return type [INFO] [stdout] | [INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_7_0() -> Result<(), Box> { [INFO] [stdout] 5 | // some concrete type implementing I2C access, i.e. the embedded_hal::blocking::i2c::WriteRead [INFO] [stdout] ... [INFO] [stdout] 13 | let battery_voltage = lc709203.cell_voltage_v(&mut i2c)?; [INFO] [stdout] 14 + Ok(()) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`) [INFO] [stdout] --> src/lib.rs:17:56 [INFO] [stdout] | [INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_7_0() { [INFO] [stdout] | --------------------------------- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] ... [INFO] [stdout] 13 | let battery_voltage = lc709203.cell_voltage_v(&mut i2c)?; [INFO] [stdout] | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] | [INFO] [stdout] help: consider adding return type [INFO] [stdout] | [INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_7_0() -> Result<(), Box> { [INFO] [stdout] 5 | // some concrete type implementing I2C access, i.e. the embedded_hal::blocking::i2c::WriteRead [INFO] [stdout] ... [INFO] [stdout] 13 | let battery_voltage = lc709203.cell_voltage_v(&mut i2c)?; [INFO] [stdout] 14 + Ok(()) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0433. [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - (line 7) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s [INFO] [stdout] [INFO] [stderr] error: doctest failed, to rerun pass `--doc` [INFO] running `Command { std: "docker" "inspect" "939d48c8abab2bf04dee29427a81a573526d51e4045444e94eeb768b6599e515", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "939d48c8abab2bf04dee29427a81a573526d51e4045444e94eeb768b6599e515", kill_on_drop: false }` [INFO] [stdout] 939d48c8abab2bf04dee29427a81a573526d51e4045444e94eeb768b6599e515