[INFO] fetching crate ufire_ec 2.0.0...
[INFO] checking ufire_ec-2.0.0 against try#15a786332e2f0dd343b226ab6bb8ec028a350f73 for pr-81782
[INFO] extracting crate ufire_ec 2.0.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate ufire_ec 2.0.0 on toolchain 15a786332e2f0dd343b226ab6bb8ec028a350f73
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ufire_ec 2.0.0
[INFO] finished tweaking crates.io crate ufire_ec 2.0.0
[INFO] tweaked toml for crates.io crate ufire_ec 2.0.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad496f6b43fa90af6d487ebede10cb438dd5357f31f7737531c38a61ffdb00fe
[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" "ad496f6b43fa90af6d487ebede10cb438dd5357f31f7737531c38a61ffdb00fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad496f6b43fa90af6d487ebede10cb438dd5357f31f7737531c38a61ffdb00fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad496f6b43fa90af6d487ebede10cb438dd5357f31f7737531c38a61ffdb00fe", kill_on_drop: false }`
[INFO] [stdout] ad496f6b43fa90af6d487ebede10cb438dd5357f31f7737531c38a61ffdb00fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e689a6c3300d48d1b427117bbc40b091cbbe2e43c489a2426ace01f65300044e
[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" "e689a6c3300d48d1b427117bbc40b091cbbe2e43c489a2426ace01f65300044e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.63
[INFO] [stderr]    Compiling cargo_metadata v0.10.0
[INFO] [stderr]    Compiling skeptic v0.13.5
[INFO] [stderr]    Compiling i2cdev v0.3.2
[INFO] [stderr]     Checking ufire_ec v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:71:46
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn measure_temp(&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:128:60
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub fn measure_ec(&mut self, new_temp: bool) -> 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:146:45
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn measure_raw(&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:160:44
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub fn measure_sw(&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:188:51
[INFO] [stdout]     |
[INFO] [stdout] 188 |     pub fn get_temp_constant(&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:201:52
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub fn get_calibration_ec(&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:213:52
[INFO] [stdout]     |
[INFO] [stdout] 213 |     pub fn get_calibration_sw(&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:225:59
[INFO] [stdout]     |
[INFO] [stdout] 225 |     pub fn read_eeprom(&mut self, address: 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:239:72
[INFO] [stdout]     |
[INFO] [stdout] 239 |     pub fn write_eeprom(&mut self, address: f32, value: 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:275:45
[INFO] [stdout]     |
[INFO] [stdout] 275 |     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:287:46
[INFO] [stdout]     |
[INFO] [stdout] 287 |     pub fn get_firmware(&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:318:64
[INFO] [stdout]     |
[INFO] [stdout] 318 |     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:354:62
[INFO] [stdout]     |
[INFO] [stdout] 354 |     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: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:71:46
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn measure_temp(&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:128:60
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub fn measure_ec(&mut self, new_temp: bool) -> 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:146:45
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn measure_raw(&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:160:44
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub fn measure_sw(&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:188:51
[INFO] [stdout]     |
[INFO] [stdout] 188 |     pub fn get_temp_constant(&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:201:52
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub fn get_calibration_ec(&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:213:52
[INFO] [stdout]     |
[INFO] [stdout] 213 |     pub fn get_calibration_sw(&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:225:59
[INFO] [stdout]     |
[INFO] [stdout] 225 |     pub fn read_eeprom(&mut self, address: 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:239:72
[INFO] [stdout]     |
[INFO] [stdout] 239 |     pub fn write_eeprom(&mut self, address: f32, value: 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:275:45
[INFO] [stdout]     |
[INFO] [stdout] 275 |     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:287:46
[INFO] [stdout]     |
[INFO] [stdout] 287 |     pub fn get_firmware(&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:318:64
[INFO] [stdout]     |
[INFO] [stdout] 318 |     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:354:62
[INFO] [stdout]     |
[INFO] [stdout] 354 |     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: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.98s
[INFO] running `Command { std: "docker" "inspect" "e689a6c3300d48d1b427117bbc40b091cbbe2e43c489a2426ace01f65300044e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e689a6c3300d48d1b427117bbc40b091cbbe2e43c489a2426ace01f65300044e", kill_on_drop: false }`
[INFO] [stdout] e689a6c3300d48d1b427117bbc40b091cbbe2e43c489a2426ace01f65300044e