[INFO] fetching crate hx711_spi 0.3.1... [INFO] testing hx711_spi-0.3.1 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799 [INFO] extracting crate hx711_spi 0.3.1 into /workspace/builds/worker-12/source [INFO] validating manifest of crates.io crate hx711_spi 0.3.1 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate hx711_spi 0.3.1 [INFO] finished tweaking crates.io crate hx711_spi 0.3.1 [INFO] tweaked toml for crates.io crate hx711_spi 0.3.1 written to /workspace/builds/worker-12/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded void v1.0.2 [INFO] [stderr] Downloaded nb v0.1.3 [INFO] [stderr] Downloaded bitmatch v0.1.1 [INFO] [stderr] Downloaded embedded-hal v0.2.6 [INFO] [stderr] Downloaded nb v1.0.0 [INFO] [stderr] Downloaded boolean_expression v0.3.11 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c65d611f031325fd1cfca9e1418731421dce78a4c7431b764a5c72a2b9b7d2aa [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "c65d611f031325fd1cfca9e1418731421dce78a4c7431b764a5c72a2b9b7d2aa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c65d611f031325fd1cfca9e1418731421dce78a4c7431b764a5c72a2b9b7d2aa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c65d611f031325fd1cfca9e1418731421dce78a4c7431b764a5c72a2b9b7d2aa", kill_on_drop: false }` [INFO] [stdout] c65d611f031325fd1cfca9e1418731421dce78a4c7431b764a5c72a2b9b7d2aa [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 93d364847a5ab5f423bc9b65d22de7703493f82d93b48ea210a022d09b6e7fbb [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "93d364847a5ab5f423bc9b65d22de7703493f82d93b48ea210a022d09b6e7fbb", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.32 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Compiling smallvec v1.7.0 [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 v0.2.6 [INFO] [stderr] Compiling itertools v0.9.0 [INFO] [stderr] Compiling quote v1.0.10 [INFO] [stderr] Compiling syn v1.0.82 [INFO] [stderr] Compiling boolean_expression v0.3.11 [INFO] [stderr] Compiling bitmatch v0.1.1 [INFO] [stderr] Compiling hx711_spi v0.3.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 22.77s [INFO] running `Command { std: "docker" "inspect" "93d364847a5ab5f423bc9b65d22de7703493f82d93b48ea210a022d09b6e7fbb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "93d364847a5ab5f423bc9b65d22de7703493f82d93b48ea210a022d09b6e7fbb", kill_on_drop: false }` [INFO] [stdout] 93d364847a5ab5f423bc9b65d22de7703493f82d93b48ea210a022d09b6e7fbb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 53de0bf3fb1a7e656bf750d0675d37f49099c450a757e48ea22b89b3dccd7ef4 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "53de0bf3fb1a7e656bf750d0675d37f49099c450a757e48ea22b89b3dccd7ef4", kill_on_drop: false }` [INFO] [stderr] Compiling hx711_spi v0.3.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.82s [INFO] running `Command { std: "docker" "inspect" "53de0bf3fb1a7e656bf750d0675d37f49099c450a757e48ea22b89b3dccd7ef4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "53de0bf3fb1a7e656bf750d0675d37f49099c450a757e48ea22b89b3dccd7ef4", kill_on_drop: false }` [INFO] [stdout] 53de0bf3fb1a7e656bf750d0675d37f49099c450a757e48ea22b89b3dccd7ef4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] f9709b37cb24e06ac18ed87785b239d1d6463e82f6037360b39cb67387c31899 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "f9709b37cb24e06ac18ed87785b239d1d6463e82f6037360b39cb67387c31899", kill_on_drop: false }` [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stdout] running 0 tests [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/hx711_spi-db441613a17f8247) [INFO] [stdout] [INFO] [stderr] Doc-tests hx711_spi [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 6 tests [INFO] [stdout] test src/lib.rs - (line 14) ... FAILED [INFO] [stdout] test src/lib.rs - Hx711::mode (line 199) ... FAILED [INFO] [stdout] test src/lib.rs - Hx711::reset (line 160) ... FAILED [INFO] [stdout] test src/lib.rs - Hx711::new (line 100) ... FAILED [INFO] [stdout] test src/lib.rs - Hx711::read (line 124) ... FAILED [INFO] [stdout] test src/lib.rs - Hx711::set_mode (line 185) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - (line 14) stdout ---- [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `rppal` [INFO] [stdout] --> src/lib.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 4 | use rppal::{spi::{Spi, Bus, SlaveSelect, Mode, Error},hal::Delay}; [INFO] [stdout] | ^^^^^ use of undeclared crate or module `rppal` [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Spi` [INFO] [stdout] --> src/lib.rs:24:15 [INFO] [stdout] | [INFO] [stdout] 12 | let spi = Spi::new(Bus::Spi0, SlaveSelect::Ss0, 1_000_000, Mode::Mode0)?; [INFO] [stdout] | ^^^ use of undeclared type `Spi` [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Bus` [INFO] [stdout] --> src/lib.rs:24:24 [INFO] [stdout] | [INFO] [stdout] 12 | let spi = Spi::new(Bus::Spi0, SlaveSelect::Ss0, 1_000_000, Mode::Mode0)?; [INFO] [stdout] | ^^^ use of undeclared type `Bus` [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SlaveSelect` [INFO] [stdout] --> src/lib.rs:24:35 [INFO] [stdout] | [INFO] [stdout] 12 | let spi = Spi::new(Bus::Spi0, SlaveSelect::Ss0, 1_000_000, Mode::Mode0)?; [INFO] [stdout] | ^^^^^^^^^^^ use of undeclared type `SlaveSelect` [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Mode` [INFO] [stdout] --> src/lib.rs:24:64 [INFO] [stdout] | [INFO] [stdout] 12 | let spi = Spi::new(Bus::Spi0, SlaveSelect::Ss0, 1_000_000, Mode::Mode0)?; [INFO] [stdout] | ^^^^ use of undeclared type `Mode` [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Delay` [INFO] [stdout] --> src/lib.rs:25:37 [INFO] [stdout] | [INFO] [stdout] 13 | let mut hx711 = Hx711::new(spi, Delay::new()); [INFO] [stdout] | ^^^^^ use of undeclared type `Delay` [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `Error` in this scope [INFO] [stdout] --> src/lib.rs:22:25 [INFO] [stdout] | [INFO] [stdout] 10 | fn main() -> Result<(), Error> [INFO] [stdout] | ^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing one of these items [INFO] [stdout] | [INFO] [stdout] 4 | use core::fmt::Error; [INFO] [stdout] | [INFO] [stdout] 4 | use nb::Error; [INFO] [stdout] | [INFO] [stdout] 4 | use std::error::Error; [INFO] [stdout] | [INFO] [stdout] 4 | use std::fmt::Error; [INFO] [stdout] | [INFO] [stdout] and 1 other candidate [INFO] [stdout] [INFO] [stdout] error: aborting due to 7 previous errors [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0412, E0433. [INFO] [stdout] For more information about an error, try `rustc --explain E0412`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - Hx711::mode (line 199) stdout ---- [INFO] [stdout] error[E0425]: cannot find value `hx711` in this scope [INFO] [stdout] --> src/lib.rs:200:16 [INFO] [stdout] | [INFO] [stdout] 3 | print!("{:?}", hx711.mode()); [INFO] [stdout] | ^^^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0425`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - Hx711::reset (line 160) stdout ---- [INFO] [stdout] error[E0425]: cannot find value `hx711` in this scope [INFO] [stdout] --> src/lib.rs:161:1 [INFO] [stdout] | [INFO] [stdout] 3 | hx711.reset()?; [INFO] [stdout] | ^^^^^ not found in this scope [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:161:14 [INFO] [stdout] | [INFO] [stdout] 2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_160_0() { [INFO] [stdout] | ______________________________________- [INFO] [stdout] 3 | | hx711.reset()?; [INFO] [stdout] | | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] 4 | | } _doctest_main_src_lib_rs_160_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] note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0425. [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - Hx711::new (line 100) stdout ---- [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Spi` [INFO] [stdout] --> src/lib.rs:101:11 [INFO] [stdout] | [INFO] [stdout] 3 | let dev = Spi::new(bus, SlaveSelect::Ss0, 1_000_000, Mode::Mode0)?; [INFO] [stdout] | ^^^ use of undeclared type `Spi` [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SlaveSelect` [INFO] [stdout] --> src/lib.rs:101:25 [INFO] [stdout] | [INFO] [stdout] 3 | let dev = Spi::new(bus, SlaveSelect::Ss0, 1_000_000, Mode::Mode0)?; [INFO] [stdout] | ^^^^^^^^^^^ use of undeclared type `SlaveSelect` [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Mode` [INFO] [stdout] --> src/lib.rs:101:54 [INFO] [stdout] | [INFO] [stdout] 3 | let dev = Spi::new(bus, SlaveSelect::Ss0, 1_000_000, Mode::Mode0)?; [INFO] [stdout] | ^^^^ use of undeclared type `Mode` [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find value `bus` in this scope [INFO] [stdout] --> src/lib.rs:101:20 [INFO] [stdout] | [INFO] [stdout] 3 | let dev = Spi::new(bus, SlaveSelect::Ss0, 1_000_000, Mode::Mode0)?; [INFO] [stdout] | ^^^ not found in this scope [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:101:66 [INFO] [stdout] | [INFO] [stdout] 2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_100_0() { [INFO] [stdout] | ______________________________________- [INFO] [stdout] 3 | | let dev = Spi::new(bus, SlaveSelect::Ss0, 1_000_000, Mode::Mode0)?; [INFO] [stdout] | | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] 4 | | } _doctest_main_src_lib_rs_100_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] note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] error: aborting due to 5 previous errors [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0425, E0433. [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - Hx711::read (line 124) stdout ---- [INFO] [stdout] error: cannot find macro `block` in this scope [INFO] [stdout] --> src/lib.rs:125:9 [INFO] [stdout] | [INFO] [stdout] 3 | let v = block!(hx711.read())?; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider importing this macro: [INFO] [stdout] nb::block [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:125:29 [INFO] [stdout] | [INFO] [stdout] 2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_124_0() { [INFO] [stdout] | ______________________________________- [INFO] [stdout] 3 | | let v = block!(hx711.read())?; [INFO] [stdout] | | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] 4 | | } _doctest_main_src_lib_rs_124_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] note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - Hx711::set_mode (line 185) stdout ---- [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Mode` [INFO] [stdout] --> src/lib.rs:186:16 [INFO] [stdout] | [INFO] [stdout] 3 | hx711.set_mode(Mode::ChAGain128)?; [INFO] [stdout] | ^^^^ use of undeclared type `Mode` [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find value `hx711` in this scope [INFO] [stdout] --> src/lib.rs:186:1 [INFO] [stdout] | [INFO] [stdout] 3 | hx711.set_mode(Mode::ChAGain128)?; [INFO] [stdout] | ^^^^^ not found in this scope [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:186:33 [INFO] [stdout] | [INFO] [stdout] 2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_185_0() { [INFO] [stdout] | ______________________________________- [INFO] [stdout] 3 | | hx711.set_mode(Mode::ChAGain128)?; [INFO] [stdout] | | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] 4 | | } _doctest_main_src_lib_rs_185_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] note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0425, 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 14) [INFO] [stdout] src/lib.rs - Hx711::mode (line 199) [INFO] [stdout] src/lib.rs - Hx711::new (line 100) [INFO] [stdout] src/lib.rs - Hx711::read (line 124) [INFO] [stdout] src/lib.rs - Hx711::reset (line 160) [INFO] [stdout] src/lib.rs - Hx711::set_mode (line 185) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 6 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.28s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--doc' [INFO] running `Command { std: "docker" "inspect" "f9709b37cb24e06ac18ed87785b239d1d6463e82f6037360b39cb67387c31899", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f9709b37cb24e06ac18ed87785b239d1d6463e82f6037360b39cb67387c31899", kill_on_drop: false }` [INFO] [stdout] f9709b37cb24e06ac18ed87785b239d1d6463e82f6037360b39cb67387c31899