[INFO] fetching crate mpu9250-i2c 0.6.6...
[INFO] checking mpu9250-i2c-0.6.6 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate mpu9250-i2c 0.6.6 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate mpu9250-i2c 0.6.6 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/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-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1f162f546f58d131a1cf26f6cbcfc19adc19eac929016c2a13c7559d6476663
[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" "d1f162f546f58d131a1cf26f6cbcfc19adc19eac929016c2a13c7559d6476663", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1f162f546f58d131a1cf26f6cbcfc19adc19eac929016c2a13c7559d6476663", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1f162f546f58d131a1cf26f6cbcfc19adc19eac929016c2a13c7559d6476663", kill_on_drop: false }`
[INFO] [stdout] d1f162f546f58d131a1cf26f6cbcfc19adc19eac929016c2a13c7559d6476663
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e0b01dfd19c3f22c4ce3c5e4fbab7363fe34d95ef875d3643e8485d95f32bb4
[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" "1e0b01dfd19c3f22c4ce3c5e4fbab7363fe34d95ef875d3643e8485d95f32bb4", kill_on_drop: false }`
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking bitflags v0.3.3
[INFO] [stderr]     Checking m v0.1.1
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.4
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking 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] [stderr]    Compiling nix v0.6.0
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking generic-array v0.11.1
[INFO] [stderr]     Checking mat v0.2.0
[INFO] [stderr]     Checking madgwick v0.1.1
[INFO] [stderr]     Checking spidev v0.3.0
[INFO] [stderr]     Checking i2cdev v0.4.4
[INFO] [stderr]     Checking sysfs_gpio v0.5.4
[INFO] [stderr]     Checking linux-embedded-hal v0.2.2
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.18s
[INFO] running `Command { std: "docker" "inspect" "1e0b01dfd19c3f22c4ce3c5e4fbab7363fe34d95ef875d3643e8485d95f32bb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e0b01dfd19c3f22c4ce3c5e4fbab7363fe34d95ef875d3643e8485d95f32bb4", kill_on_drop: false }`
[INFO] [stdout] 1e0b01dfd19c3f22c4ce3c5e4fbab7363fe34d95ef875d3643e8485d95f32bb4