[INFO] crate mpu9250-i2c 0.6.6 is already in cache
[INFO] testing mpu9250-i2c-0.6.6 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate mpu9250-i2c 0.6.6 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mpu9250-i2c 0.6.6 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config
[INFO] started tweaking crates.io crate mpu9250-i2c 0.6.6
[INFO] finished tweaking crates.io crate mpu9250-i2c 0.6.6
[INFO] tweaked toml for crates.io crate mpu9250-i2c 0.6.6 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 051e2a021fa951e0937ae3f4ba4be360b6c1e16405a3761294a86ff9f1b8f3b2
[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" "051e2a021fa951e0937ae3f4ba4be360b6c1e16405a3761294a86ff9f1b8f3b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "051e2a021fa951e0937ae3f4ba4be360b6c1e16405a3761294a86ff9f1b8f3b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "051e2a021fa951e0937ae3f4ba4be360b6c1e16405a3761294a86ff9f1b8f3b2", kill_on_drop: false }`
[INFO] [stdout] 051e2a021fa951e0937ae3f4ba4be360b6c1e16405a3761294a86ff9f1b8f3b2
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2dff4e3c35e162b5aacb365e0456d0187b5bd70c98ac9c4fb6cd300a086e7bb
[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" "f2dff4e3c35e162b5aacb365e0456d0187b5bd70c98ac9c4fb6cd300a086e7bb", 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 v0.2.4
[INFO] [stderr]    Compiling mpu9250-i2c v0.6.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:273:57
[INFO] [stdout]     |
[INFO] [stdout] 273 |   pub fn get_full_scale_gyro_range(&mut self) -> Result<(u8), E> {
[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:310:58
[INFO] [stdout]     |
[INFO] [stdout] 310 |   pub fn get_full_scale_accel_range(&mut self) -> Result<(u8), E> {
[INFO] [stdout]     |                                                          ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:538:51
[INFO] [stdout]     |
[INFO] [stdout] 538 |   pub fn enable_magnetometer(&mut self) -> Result<(bool), E> {
[INFO] [stdout]     |                                                   ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:561:52
[INFO] [stdout]     |
[INFO] [stdout] 561 |   pub fn ak8963_get_device_id(&mut self) -> Result<(u8), E> {
[INFO] [stdout]     |                                                    ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:638:47
[INFO] [stdout]     |
[INFO] [stdout] 638 |   pub fn ak8963_get_cntl(&mut self) -> Result<(mag::Ctnl1), E> {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
[INFO] running `Command { std: "docker" "inspect" "f2dff4e3c35e162b5aacb365e0456d0187b5bd70c98ac9c4fb6cd300a086e7bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2dff4e3c35e162b5aacb365e0456d0187b5bd70c98ac9c4fb6cd300a086e7bb", kill_on_drop: false }`
[INFO] [stdout] f2dff4e3c35e162b5aacb365e0456d0187b5bd70c98ac9c4fb6cd300a086e7bb
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88af46be8979e98c42125588d028a510b9b61a8a4f2edd9a7e52966e0a2b05d2
[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" "88af46be8979e98c42125588d028a510b9b61a8a4f2edd9a7e52966e0a2b05d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling m v0.1.1
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:273:57
[INFO] [stdout]     |
[INFO] [stdout] 273 |   pub fn get_full_scale_gyro_range(&mut self) -> Result<(u8), E> {
[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:310:58
[INFO] [stdout]     |
[INFO] [stdout] 310 |   pub fn get_full_scale_accel_range(&mut self) -> Result<(u8), E> {
[INFO] [stdout]     |                                                          ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:538:51
[INFO] [stdout]     |
[INFO] [stdout] 538 |   pub fn enable_magnetometer(&mut self) -> Result<(bool), E> {
[INFO] [stdout]     |                                                   ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:561:52
[INFO] [stdout]     |
[INFO] [stdout] 561 |   pub fn ak8963_get_device_id(&mut self) -> Result<(u8), E> {
[INFO] [stdout]     |                                                    ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:638:47
[INFO] [stdout]     |
[INFO] [stdout] 638 |   pub fn ak8963_get_cntl(&mut self) -> Result<(mag::Ctnl1), E> {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling generic-array v0.11.1
[INFO] [stderr]    Compiling mat v0.2.0
[INFO] [stderr]    Compiling madgwick v0.1.1
[INFO] [stderr]    Compiling spidev v0.3.0
[INFO] [stderr]    Compiling i2cdev v0.4.4
[INFO] [stderr]    Compiling sysfs_gpio v0.5.4
[INFO] [stderr]    Compiling linux-embedded-hal v0.2.2
[INFO] [stderr]    Compiling mpu9250-i2c v0.6.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:273:57
[INFO] [stdout]     |
[INFO] [stdout] 273 |   pub fn get_full_scale_gyro_range(&mut self) -> Result<(u8), E> {
[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:310:58
[INFO] [stdout]     |
[INFO] [stdout] 310 |   pub fn get_full_scale_accel_range(&mut self) -> Result<(u8), E> {
[INFO] [stdout]     |                                                          ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:538:51
[INFO] [stdout]     |
[INFO] [stdout] 538 |   pub fn enable_magnetometer(&mut self) -> Result<(bool), E> {
[INFO] [stdout]     |                                                   ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:561:52
[INFO] [stdout]     |
[INFO] [stdout] 561 |   pub fn ak8963_get_device_id(&mut self) -> Result<(u8), E> {
[INFO] [stdout]     |                                                    ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:638:47
[INFO] [stdout]     |
[INFO] [stdout] 638 |   pub fn ak8963_get_cntl(&mut self) -> Result<(mag::Ctnl1), E> {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> examples/calibrate.rs:307:9
[INFO] [stdout]     |
[INFO] [stdout] 307 |     let mut vm = mpu9250.get_mag().unwrap();
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 23.63s
[INFO] running `Command { std: "docker" "inspect" "88af46be8979e98c42125588d028a510b9b61a8a4f2edd9a7e52966e0a2b05d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88af46be8979e98c42125588d028a510b9b61a8a4f2edd9a7e52966e0a2b05d2", kill_on_drop: false }`
[INFO] [stdout] 88af46be8979e98c42125588d028a510b9b61a8a4f2edd9a7e52966e0a2b05d2
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bf53d1e9fed8b1ae4fde6111a9240dab7755da796b0cce6c83a8fcb335eca11c
[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" "bf53d1e9fed8b1ae4fde6111a9240dab7755da796b0cce6c83a8fcb335eca11c", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:273:57
[INFO] [stderr]     |
[INFO] [stderr] 273 |   pub fn get_full_scale_gyro_range(&mut self) -> Result<(u8), E> {
[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:310:58
[INFO] [stderr]     |
[INFO] [stderr] 310 |   pub fn get_full_scale_accel_range(&mut self) -> Result<(u8), E> {
[INFO] [stderr]     |                                                          ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:538:51
[INFO] [stderr]     |
[INFO] [stderr] 538 |   pub fn enable_magnetometer(&mut self) -> Result<(bool), E> {
[INFO] [stderr]     |                                                   ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:561:52
[INFO] [stderr]     |
[INFO] [stderr] 561 |   pub fn ak8963_get_device_id(&mut self) -> Result<(u8), E> {
[INFO] [stderr]     |                                                    ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:638:47
[INFO] [stderr]     |
[INFO] [stderr] 638 |   pub fn ak8963_get_cntl(&mut self) -> Result<(mag::Ctnl1), E> {
[INFO] [stderr]     |                                               ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/calibrate.rs:307:9
[INFO] [stderr]     |
[INFO] [stderr] 307 |     let mut vm = mpu9250.get_mag().unwrap();
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:273:57
[INFO] [stderr]     |
[INFO] [stderr] 273 |   pub fn get_full_scale_gyro_range(&mut self) -> Result<(u8), E> {
[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:310:58
[INFO] [stderr]     |
[INFO] [stderr] 310 |   pub fn get_full_scale_accel_range(&mut self) -> Result<(u8), E> {
[INFO] [stderr]     |                                                          ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:538:51
[INFO] [stderr]     |
[INFO] [stderr] 538 |   pub fn enable_magnetometer(&mut self) -> Result<(bool), E> {
[INFO] [stderr]     |                                                   ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:561:52
[INFO] [stderr]     |
[INFO] [stderr] 561 |   pub fn ak8963_get_device_id(&mut self) -> Result<(u8), E> {
[INFO] [stderr]     |                                                    ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:638:47
[INFO] [stderr]     |
[INFO] [stderr] 638 |   pub fn ak8963_get_cntl(&mut self) -> Result<(mag::Ctnl1), E> {
[INFO] [stderr]     |                                               ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mpu9250_i2c-e3fbc4aa55eaffa9
[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
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mpu9250-i2c
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:273:57
[INFO] [stderr]     |
[INFO] [stderr] 273 |   pub fn get_full_scale_gyro_range(&mut self) -> Result<(u8), E> {
[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:310:58
[INFO] [stderr]     |
[INFO] [stderr] 310 |   pub fn get_full_scale_accel_range(&mut self) -> Result<(u8), E> {
[INFO] [stderr]     |                                                          ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:538:51
[INFO] [stderr]     |
[INFO] [stderr] 538 |   pub fn enable_magnetometer(&mut self) -> Result<(bool), E> {
[INFO] [stderr]     |                                                   ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:561:52
[INFO] [stderr]     |
[INFO] [stderr] 561 |   pub fn ak8963_get_device_id(&mut self) -> Result<(u8), E> {
[INFO] [stderr]     |                                                    ^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:638:47
[INFO] [stderr]     |
[INFO] [stderr] 638 |   pub fn ak8963_get_cntl(&mut self) -> Result<(mag::Ctnl1), E> {
[INFO] [stderr]     |                                               ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 47) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 47) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: unresolved import
[INFO] [stdout]  --> src/lib.rs:51:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mpu9250::{calibration::Calibration, Mpu9250};
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     unresolved import
[INFO] [stdout]   |     help: a similar path exists: `mpu9250_i2c::mpu9250`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `mpu9250`
[INFO] [stdout]  --> src/lib.rs:51:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mpu9250::{calibration::Calibration, Mpu9250};
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     unresolved import
[INFO] [stdout]   |     help: a similar path exists: `mpu9250_i2c::mpu9250`
[INFO] [stdout] 
[INFO] [stdout] error[E0422]: cannot find struct, variant or union type `Calibration` in this scope
[INFO] [stdout]   --> src/lib.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |   let cal = Calibration {
[INFO] [stdout]    |             ^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 4  | use mpu9250_i2c::calibration::Calibration;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0422, E0432, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0422`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 47)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "bf53d1e9fed8b1ae4fde6111a9240dab7755da796b0cce6c83a8fcb335eca11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf53d1e9fed8b1ae4fde6111a9240dab7755da796b0cce6c83a8fcb335eca11c", kill_on_drop: false }`
[INFO] [stdout] bf53d1e9fed8b1ae4fde6111a9240dab7755da796b0cce6c83a8fcb335eca11c