[INFO] fetching crate ufire_ise 2.0.0...
[INFO] testing ufire_ise-2.0.0 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate ufire_ise 2.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ufire_ise 2.0.0 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ufire_ise 2.0.0
[INFO] finished tweaking crates.io crate ufire_ise 2.0.0
[INFO] tweaked toml for crates.io crate ufire_ise 2.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0815b88c81699bf9657bdef8ca8484116ca00d8d427621219d7a33f12a2c830e
[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" "0815b88c81699bf9657bdef8ca8484116ca00d8d427621219d7a33f12a2c830e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0815b88c81699bf9657bdef8ca8484116ca00d8d427621219d7a33f12a2c830e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0815b88c81699bf9657bdef8ca8484116ca00d8d427621219d7a33f12a2c830e", kill_on_drop: false }`
[INFO] [stdout] 0815b88c81699bf9657bdef8ca8484116ca00d8d427621219d7a33f12a2c830e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51220e5b17f0a54912ea99fe51bee536df6e5ccd6ca3f1c6f7d8d2a7c5f8eef7
[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" "51220e5b17f0a54912ea99fe51bee536df6e5ccd6ca3f1c6f7d8d2a7c5f8eef7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling cargo-platform v0.1.1
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling cargo_metadata v0.12.3
[INFO] [stderr]    Compiling skeptic v0.13.6
[INFO] [stderr]    Compiling i2cdev v0.3.2
[INFO] [stderr]    Compiling ufire_ise v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:78:44
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn measure_mv(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]    |                                            ^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:104:44
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub fn measure_ph(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                            ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:155:51
[INFO] [stdout]     |
[INFO] [stdout] 155 |     pub fn ph_to_mv(&mut self, ph: f32) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                   ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:166:46
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn measure_temp(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:264:54
[INFO] [stdout]     |
[INFO] [stdout] 264 |     pub fn get_calibrate_offset(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                      ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:275:62
[INFO] [stdout]     |
[INFO] [stdout] 275 |     pub fn get_calibrate_high_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:287:60
[INFO] [stdout]     |
[INFO] [stdout] 287 |     pub fn get_calibrate_high_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                            ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:299:61
[INFO] [stdout]     |
[INFO] [stdout] 299 |     pub fn get_calibrate_low_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                             ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:311:59
[INFO] [stdout]     |
[INFO] [stdout] 311 |     pub fn get_calibrate_low_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                           ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:366:45
[INFO] [stdout]     |
[INFO] [stdout] 366 |     pub fn get_version(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                             ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:401:64
[INFO] [stdout]     |
[INFO] [stdout] 401 |     pub fn using_temperature_compensation(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                                ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:415:50
[INFO] [stdout]     |
[INFO] [stdout] 415 |     pub fn using_dual_point(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                  ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:444:58
[INFO] [stdout]     |
[INFO] [stdout] 444 |     pub fn read_eeprom(&mut self, address: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                          ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:478:53
[INFO] [stdout]     |
[INFO] [stdout] 478 |     pub fn get_probe_potential(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:511:62
[INFO] [stdout]     |
[INFO] [stdout] 511 |     pub fn _read_register(&mut self, register: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.03s
[INFO] running `Command { std: "docker" "inspect" "51220e5b17f0a54912ea99fe51bee536df6e5ccd6ca3f1c6f7d8d2a7c5f8eef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51220e5b17f0a54912ea99fe51bee536df6e5ccd6ca3f1c6f7d8d2a7c5f8eef7", kill_on_drop: false }`
[INFO] [stdout] 51220e5b17f0a54912ea99fe51bee536df6e5ccd6ca3f1c6f7d8d2a7c5f8eef7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 564e3b615d755b1cd4d18634fc5cf4c9366f7047c57ad423516387e82edf0e78
[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" "564e3b615d755b1cd4d18634fc5cf4c9366f7047c57ad423516387e82edf0e78", kill_on_drop: false }`
[INFO] [stderr]    Compiling ufire_ise v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:78:44
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn measure_mv(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]    |                                            ^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:104:44
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub fn measure_ph(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                            ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:155:51
[INFO] [stdout]     |
[INFO] [stdout] 155 |     pub fn ph_to_mv(&mut self, ph: f32) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                   ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:166:46
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn measure_temp(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:264:54
[INFO] [stdout]     |
[INFO] [stdout] 264 |     pub fn get_calibrate_offset(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                      ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:275:62
[INFO] [stdout]     |
[INFO] [stdout] 275 |     pub fn get_calibrate_high_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:287:60
[INFO] [stdout]     |
[INFO] [stdout] 287 |     pub fn get_calibrate_high_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                            ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:299:61
[INFO] [stdout]     |
[INFO] [stdout] 299 |     pub fn get_calibrate_low_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                             ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:311:59
[INFO] [stdout]     |
[INFO] [stdout] 311 |     pub fn get_calibrate_low_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                           ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:366:45
[INFO] [stdout]     |
[INFO] [stdout] 366 |     pub fn get_version(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                             ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:401:64
[INFO] [stdout]     |
[INFO] [stdout] 401 |     pub fn using_temperature_compensation(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                                ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:415:50
[INFO] [stdout]     |
[INFO] [stdout] 415 |     pub fn using_dual_point(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                  ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:444:58
[INFO] [stdout]     |
[INFO] [stdout] 444 |     pub fn read_eeprom(&mut self, address: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                          ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:478:53
[INFO] [stdout]     |
[INFO] [stdout] 478 |     pub fn get_probe_potential(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:511:62
[INFO] [stdout]     |
[INFO] [stdout] 511 |     pub fn _read_register(&mut self, register: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:78:44
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn measure_mv(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]    |                                            ^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:104:44
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub fn measure_ph(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                            ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:155:51
[INFO] [stdout]     |
[INFO] [stdout] 155 |     pub fn ph_to_mv(&mut self, ph: f32) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                   ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:166:46
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn measure_temp(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:264:54
[INFO] [stdout]     |
[INFO] [stdout] 264 |     pub fn get_calibrate_offset(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                      ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:275:62
[INFO] [stdout]     |
[INFO] [stdout] 275 |     pub fn get_calibrate_high_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:287:60
[INFO] [stdout]     |
[INFO] [stdout] 287 |     pub fn get_calibrate_high_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                            ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:299:61
[INFO] [stdout]     |
[INFO] [stdout] 299 |     pub fn get_calibrate_low_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                             ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:311:59
[INFO] [stdout]     |
[INFO] [stdout] 311 |     pub fn get_calibrate_low_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                           ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:366:45
[INFO] [stdout]     |
[INFO] [stdout] 366 |     pub fn get_version(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                             ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:401:64
[INFO] [stdout]     |
[INFO] [stdout] 401 |     pub fn using_temperature_compensation(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                                ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:415:50
[INFO] [stdout]     |
[INFO] [stdout] 415 |     pub fn using_dual_point(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                  ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:444:58
[INFO] [stdout]     |
[INFO] [stdout] 444 |     pub fn read_eeprom(&mut self, address: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                          ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:478:53
[INFO] [stdout]     |
[INFO] [stdout] 478 |     pub fn get_probe_potential(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:511:62
[INFO] [stdout]     |
[INFO] [stdout] 511 |     pub fn _read_register(&mut self, register: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "564e3b615d755b1cd4d18634fc5cf4c9366f7047c57ad423516387e82edf0e78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "564e3b615d755b1cd4d18634fc5cf4c9366f7047c57ad423516387e82edf0e78", kill_on_drop: false }`
[INFO] [stdout] 564e3b615d755b1cd4d18634fc5cf4c9366f7047c57ad423516387e82edf0e78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] abed358cfa263680c4045b5a4f132fb1ccbee2b0d963af2baaec5cebf58beeb5
[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" "abed358cfa263680c4045b5a4f132fb1ccbee2b0d963af2baaec5cebf58beeb5", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/lib.rs:78:44
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 78 |     pub fn measure_mv(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stdout] 
[INFO] [stderr]    |                                            ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] running 0 tests
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stdout] 
[INFO] [stderr]    --> src/lib.rs:104:44
[INFO] [stderr]     |
[INFO] [stderr] 104 |     pub fn measure_ph(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                            ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:155:51
[INFO] [stderr]     |
[INFO] [stderr] 155 |     pub fn ph_to_mv(&mut self, ph: f32) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                   ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:166:46
[INFO] [stderr]     |
[INFO] [stderr] 166 |     pub fn measure_temp(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                              ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:264:54
[INFO] [stderr]     |
[INFO] [stderr] 264 |     pub fn get_calibrate_offset(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                      ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:275:62
[INFO] [stderr]     |
[INFO] [stderr] 275 |     pub fn get_calibrate_high_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:287:60
[INFO] [stderr]     |
[INFO] [stderr] 287 |     pub fn get_calibrate_high_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                            ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:299:61
[INFO] [stderr]     |
[INFO] [stderr] 299 |     pub fn get_calibrate_low_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                             ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:311:59
[INFO] [stderr]     |
[INFO] [stderr] 311 |     pub fn get_calibrate_low_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                           ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:366:45
[INFO] [stderr]     |
[INFO] [stderr] 366 |     pub fn get_version(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                             ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:401:64
[INFO] [stderr]     |
[INFO] [stderr] 401 |     pub fn using_temperature_compensation(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                                ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:415:50
[INFO] [stderr]     |
[INFO] [stderr] 415 |     pub fn using_dual_point(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                  ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:444:58
[INFO] [stderr]     |
[INFO] [stderr] 444 |     pub fn read_eeprom(&mut self, address: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                          ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:478:53
[INFO] [stderr]     |
[INFO] [stderr] 478 |     pub fn get_probe_potential(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:511:62
[INFO] [stderr]     |
[INFO] [stderr] 511 |     pub fn _read_register(&mut self, register: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/lib.rs:78:44
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub fn measure_mv(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]    |                                            ^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:104:44
[INFO] [stderr]     |
[INFO] [stderr] 104 |     pub fn measure_ph(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                            ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:155:51
[INFO] [stderr]     |
[INFO] [stderr] 155 |     pub fn ph_to_mv(&mut self, ph: f32) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                   ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:166:46
[INFO] [stderr]     |
[INFO] [stderr] 166 |     pub fn measure_temp(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                              ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:264:54
[INFO] [stderr]     |
[INFO] [stderr] 264 |     pub fn get_calibrate_offset(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                      ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:275:62
[INFO] [stderr]     |
[INFO] [stderr] 275 |     pub fn get_calibrate_high_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:287:60
[INFO] [stderr]     |
[INFO] [stderr] 287 |     pub fn get_calibrate_high_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                            ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:299:61
[INFO] [stderr]     |
[INFO] [stderr] 299 |     pub fn get_calibrate_low_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                             ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:311:59
[INFO] [stderr]     |
[INFO] [stderr] 311 |     pub fn get_calibrate_low_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                           ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:366:45
[INFO] [stderr]     |
[INFO] [stderr] 366 |     pub fn get_version(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                             ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:401:64
[INFO] [stderr]     |
[INFO] [stderr] 401 |     pub fn using_temperature_compensation(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                                ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:415:50
[INFO] [stderr]     |
[INFO] [stderr] 415 |     pub fn using_dual_point(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                  ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:444:58
[INFO] [stderr]     |
[INFO] [stderr] 444 |     pub fn read_eeprom(&mut self, address: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                          ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:478:53
[INFO] [stderr]     |
[INFO] [stderr] 478 |     pub fn get_probe_potential(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:511:62
[INFO] [stderr]     |
[INFO] [stderr] 511 |     pub fn _read_register(&mut self, register: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ufire_ise-f8d5c386dbc6ed74)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ufire_ise_bin-17b5ee198b8c059c)
[INFO] [stderr]    Doc-tests ufire_ise
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> /opt/rustwide/workdir/src/lib.rs:78:44
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub fn measure_mv(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]    |                                            ^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:104:44
[INFO] [stderr]     |
[INFO] [stderr] 104 |     pub fn measure_ph(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                            ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:155:51
[INFO] [stderr]     |
[INFO] [stderr] 155 |     pub fn ph_to_mv(&mut self, ph: f32) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                   ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:166:46
[INFO] [stderr]     |
[INFO] [stderr] 166 |     pub fn measure_temp(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                              ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:264:54
[INFO] [stderr]     |
[INFO] [stderr] 264 |     pub fn get_calibrate_offset(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                      ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:275:62
[INFO] [stderr]     |
[INFO] [stderr] 275 |     pub fn get_calibrate_high_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:287:60
[INFO] [stderr]     |
[INFO] [stderr] 287 |     pub fn get_calibrate_high_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                            ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:299:61
[INFO] [stderr]     |
[INFO] [stderr] 299 |     pub fn get_calibrate_low_reference(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                             ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:311:59
[INFO] [stderr]     |
[INFO] [stderr] 311 |     pub fn get_calibrate_low_reading(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                           ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:366:45
[INFO] [stderr]     |
[INFO] [stderr] 366 |     pub fn get_version(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                             ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:401:64
[INFO] [stderr]     |
[INFO] [stderr] 401 |     pub fn using_temperature_compensation(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                                ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:415:50
[INFO] [stderr]     |
[INFO] [stderr] 415 |     pub fn using_dual_point(&mut self) -> Result<(u8), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                  ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:444:58
[INFO] [stderr]     |
[INFO] [stderr] 444 |     pub fn read_eeprom(&mut self, address: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                          ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:478:53
[INFO] [stderr]     |
[INFO] [stderr] 478 |     pub fn get_probe_potential(&mut self) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:511:62
[INFO] [stderr]     |
[INFO] [stderr] 511 |     pub fn _read_register(&mut self, register: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stdout] running 26 tests
[INFO] [stderr] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name ufire_ise --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-f328109de99d6196.rlib --extern i2cdev=/opt/rustwide/target/debug/deps/libi2cdev-29d69fccd30ba1bd.rlib --extern ufire_ise=/opt/rustwide/target/debug/deps/libufire_ise-22be10b6473122dc.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "abed358cfa263680c4045b5a4f132fb1ccbee2b0d963af2baaec5cebf58beeb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abed358cfa263680c4045b5a4f132fb1ccbee2b0d963af2baaec5cebf58beeb5", kill_on_drop: false }`
[INFO] [stdout] abed358cfa263680c4045b5a4f132fb1ccbee2b0d963af2baaec5cebf58beeb5