[INFO] fetching crate lc709203 0.2.1... [INFO] testing lc709203-0.2.1 against beta-2022-02-22 for beta-1.60-1 [INFO] extracting crate lc709203 0.2.1 into /workspace/builds/worker-29/source [INFO] validating manifest of crates.io crate lc709203 0.2.1 on toolchain beta-2022-02-22 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate lc709203 0.2.1 [INFO] finished tweaking crates.io crate lc709203 0.2.1 [INFO] tweaked toml for crates.io crate lc709203 0.2.1 written to /workspace/builds/worker-29/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 714670be73287655fa5eca615ec5b021844bf01d62584cf5404e28a94067c0ad [INFO] running `Command { std: "docker" "start" "-a" "714670be73287655fa5eca615ec5b021844bf01d62584cf5404e28a94067c0ad", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "714670be73287655fa5eca615ec5b021844bf01d62584cf5404e28a94067c0ad", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "714670be73287655fa5eca615ec5b021844bf01d62584cf5404e28a94067c0ad", kill_on_drop: false }` [INFO] [stdout] 714670be73287655fa5eca615ec5b021844bf01d62584cf5404e28a94067c0ad [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6f81193596355353308763a42e8638f0d1bc81806d6fa190d7bb52091c577b55 [INFO] running `Command { std: "docker" "start" "-a" "6f81193596355353308763a42e8638f0d1bc81806d6fa190d7bb52091c577b55", kill_on_drop: false }` [INFO] [stderr] Compiling nb v1.0.0 [INFO] [stderr] Compiling void v1.0.2 [INFO] [stderr] Compiling nb v0.1.3 [INFO] [stderr] Compiling embedded-hal v0.2.7 [INFO] [stderr] Compiling lc709203 v0.2.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.14s [INFO] running `Command { std: "docker" "inspect" "6f81193596355353308763a42e8638f0d1bc81806d6fa190d7bb52091c577b55", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6f81193596355353308763a42e8638f0d1bc81806d6fa190d7bb52091c577b55", kill_on_drop: false }` [INFO] [stdout] 6f81193596355353308763a42e8638f0d1bc81806d6fa190d7bb52091c577b55 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b00a2f1a0ba7af34ece7056b4fb972715e970e9dcacbe0b6570e347fd5b83b3a [INFO] running `Command { std: "docker" "start" "-a" "b00a2f1a0ba7af34ece7056b4fb972715e970e9dcacbe0b6570e347fd5b83b3a", kill_on_drop: false }` [INFO] [stderr] Compiling lc709203 v0.2.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.83s [INFO] running `Command { std: "docker" "inspect" "b00a2f1a0ba7af34ece7056b4fb972715e970e9dcacbe0b6570e347fd5b83b3a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b00a2f1a0ba7af34ece7056b4fb972715e970e9dcacbe0b6570e347fd5b83b3a", kill_on_drop: false }` [INFO] [stdout] b00a2f1a0ba7af34ece7056b4fb972715e970e9dcacbe0b6570e347fd5b83b3a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] e5a31940c68297ba8c051da71792fee9eefcf47df35723823807370167820fdd [INFO] running `Command { std: "docker" "start" "-a" "e5a31940c68297ba8c051da71792fee9eefcf47df35723823807370167820fdd", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/lc709203-9c0c3f1aa703206f) [INFO] [stdout] [INFO] [stderr] Doc-tests lc709203 [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] [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:10:11 [INFO] [stdout] | [INFO] [stdout] 6 | let i2c = I2C::new(); [INFO] [stdout] | ^^^ use of undeclared type `I2C` [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:15:21 [INFO] [stdout] | [INFO] [stdout] 5 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_7_0() { [INFO] [stdout] | ______________________________________- [INFO] [stdout] 6 | | let i2c = I2C::new(); [INFO] [stdout] 7 | | [INFO] [stdout] 8 | | // create a builder [INFO] [stdout] ... | [INFO] [stdout] 11 | | .build(&mut i2c)?; // initialize the lc709203 chip [INFO] [stdout] | | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] 12 | | let battery_voltage = lc709203.cell_voltage_v(&mut i2c)?; // query current battery voltage [INFO] [stdout] 13 | | } _doctest_main_src_lib_rs_7_0() } [INFO] [stdout] | |_- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>>` is not implemented for `()` [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:16:56 [INFO] [stdout] | [INFO] [stdout] 5 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_7_0() { [INFO] [stdout] | ______________________________________- [INFO] [stdout] 6 | | let i2c = I2C::new(); [INFO] [stdout] 7 | | [INFO] [stdout] 8 | | // create a builder [INFO] [stdout] ... | [INFO] [stdout] 12 | | let battery_voltage = lc709203.cell_voltage_v(&mut i2c)?; // query current battery voltage [INFO] [stdout] | | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] 13 | | } _doctest_main_src_lib_rs_7_0() } [INFO] [stdout] | |_- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>>` is not implemented for `()` [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 0.11s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--doc' [INFO] running `Command { std: "docker" "inspect" "e5a31940c68297ba8c051da71792fee9eefcf47df35723823807370167820fdd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e5a31940c68297ba8c051da71792fee9eefcf47df35723823807370167820fdd", kill_on_drop: false }` [INFO] [stdout] e5a31940c68297ba8c051da71792fee9eefcf47df35723823807370167820fdd