[INFO] fetching crate ufire_sht20 0.9.1...
[INFO] testing ufire_sht20-0.9.1 against 1.47.0 for beta-1.48-1
[INFO] extracting crate ufire_sht20 0.9.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate ufire_sht20 0.9.1 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ufire_sht20 0.9.1
[INFO] finished tweaking crates.io crate ufire_sht20 0.9.1
[INFO] tweaked toml for crates.io crate ufire_sht20 0.9.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate ufire_sht20 0.9.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9338b16164f2eea87d8371cb5e8cc3e7ac11beb5517d33e393ea02e1b62e542a
[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" "9338b16164f2eea87d8371cb5e8cc3e7ac11beb5517d33e393ea02e1b62e542a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9338b16164f2eea87d8371cb5e8cc3e7ac11beb5517d33e393ea02e1b62e542a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9338b16164f2eea87d8371cb5e8cc3e7ac11beb5517d33e393ea02e1b62e542a", kill_on_drop: false }`
[INFO] [stdout] 9338b16164f2eea87d8371cb5e8cc3e7ac11beb5517d33e393ea02e1b62e542a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d1f35b15db124cea0b284b44e839d96b2a9130944d8f047e3959e8141f165fa6
[INFO] running `Command { std: "docker" "start" "-a" "d1f35b15db124cea0b284b44e839d96b2a9130944d8f047e3959e8141f165fa6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.37
[INFO] [stderr]    Compiling serde v1.0.88
[INFO] [stderr]    Compiling cc v1.0.5
[INFO] [stderr]    Compiling rustc-demangle v0.1.7
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.1
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling byteorder v1.2.1
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]    Compiling bytecount v0.2.0
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]    Compiling encode_unicode v0.3.5
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling remove_dir_all v0.3.0
[INFO] [stderr]    Compiling walkdir v1.0.7
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling term v0.5.1
[INFO] [stderr]    Compiling bytes v0.4.6
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]    Compiling tempdir v0.3.6
[INFO] [stderr]    Compiling serde_json v1.0.10
[INFO] [stderr]    Compiling semver v0.8.0
[INFO] [stderr]    Compiling csv v1.0.5
[INFO] [stderr]    Compiling prettytable-rs v0.8.0
[INFO] [stderr]    Compiling shrust v0.0.6
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling cargo_metadata v0.3.3
[INFO] [stderr]    Compiling skeptic v0.13.2
[INFO] [stderr]    Compiling i2cdev v0.3.2
[INFO] [stderr]    Compiling ufire_sht20 v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:61:45
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn temperature(&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:80:42
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn humidity(&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:125:62
[INFO] [stdout]     |
[INFO] [stdout] 125 |     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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |         try!(writeln!(io, "{}", sht20.temperature().unwrap()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:20:3
[INFO] [stdout]    |
[INFO] [stdout] 20 |         try!(writeln!(io, "{}", sht20.humidity().unwrap()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.57s
[INFO] running `Command { std: "docker" "inspect" "d1f35b15db124cea0b284b44e839d96b2a9130944d8f047e3959e8141f165fa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1f35b15db124cea0b284b44e839d96b2a9130944d8f047e3959e8141f165fa6", kill_on_drop: false }`
[INFO] [stdout] d1f35b15db124cea0b284b44e839d96b2a9130944d8f047e3959e8141f165fa6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93fae21aad9aaaea9d0361b391d7900b0148ee989d4e08fb0f74d34ad2c23445
[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" "93fae21aad9aaaea9d0361b391d7900b0148ee989d4e08fb0f74d34ad2c23445", kill_on_drop: false }`
[INFO] [stderr]    Compiling i2cdev v0.3.2
[INFO] [stderr]    Compiling ufire_sht20 v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:61:45
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn temperature(&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:80:42
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn humidity(&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:125:62
[INFO] [stdout]     |
[INFO] [stdout] 125 |     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:61:45
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn temperature(&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:80:42
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn humidity(&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:125:62
[INFO] [stdout]     |
[INFO] [stdout] 125 |     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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |         try!(writeln!(io, "{}", sht20.temperature().unwrap()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:20:3
[INFO] [stdout]    |
[INFO] [stdout] 20 |         try!(writeln!(io, "{}", sht20.humidity().unwrap()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.58s
[INFO] running `Command { std: "docker" "inspect" "93fae21aad9aaaea9d0361b391d7900b0148ee989d4e08fb0f74d34ad2c23445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93fae21aad9aaaea9d0361b391d7900b0148ee989d4e08fb0f74d34ad2c23445", kill_on_drop: false }`
[INFO] [stdout] 93fae21aad9aaaea9d0361b391d7900b0148ee989d4e08fb0f74d34ad2c23445
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9ed68aff631eaf6fba18986b95e18bc595138ba120ed9c14728730d46f38e4ff
[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" "9ed68aff631eaf6fba18986b95e18bc595138ba120ed9c14728730d46f38e4ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling i2cdev v0.3.2
[INFO] [stderr]    Compiling ufire_sht20 v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/lib.rs:61:45
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn temperature(&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:80:42
[INFO] [stderr]    |
[INFO] [stderr] 80 |     pub fn humidity(&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:125:62
[INFO] [stderr]     |
[INFO] [stderr] 125 |     pub fn _read_register(&mut self, register: 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:61:45
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn temperature(&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:80:42
[INFO] [stderr]    |
[INFO] [stderr] 80 |     pub fn humidity(&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:125:62
[INFO] [stderr]     |
[INFO] [stderr] 125 |     pub fn _read_register(&mut self, register: u8) -> Result<(f32), Box<LinuxI2CError>> {
[INFO] [stderr]     |                                                              ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:14:3
[INFO] [stderr]    |
[INFO] [stderr] 14 |         try!(writeln!(io, "{}", sht20.temperature().unwrap()));
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:20:3
[INFO] [stderr]    |
[INFO] [stderr] 20 |         try!(writeln!(io, "{}", sht20.humidity().unwrap()));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.51s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ufire_sht20-333247e903b1d201
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ufire_sht20_bin-698f09a77d8b6a0b
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests ufire_sht20
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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] warning: unnecessary parentheses around type
[INFO] [stderr]   --> /opt/rustwide/workdir/src/lib.rs:61:45
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn temperature(&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:80:42
[INFO] [stderr]    |
[INFO] [stderr] 80 |     pub fn humidity(&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:125:62
[INFO] [stderr]     |
[INFO] [stderr] 125 |     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: 3 warnings emitted
[INFO] [stdout] running 3 tests
[INFO] [stderr] 
[INFO] [stdout] test src/lib.rs - SHT20::new (line 45) ... FAILED
[INFO] [stdout] test src/lib.rs - SHT20::temperature (line 57) ... FAILED
[INFO] [stdout] test src/lib.rs - SHT20::humidity (line 76) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - SHT20::new (line 45) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `SHT20`
[INFO] [stdout]  --> src/lib.rs:46:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | let mut sht20 = SHT20::new("/dev/i2c-3").unwrap();
[INFO] [stdout]   |                 ^^^^^ use of undeclared type or module `SHT20`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - SHT20::temperature (line 57) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `SHT20`
[INFO] [stdout]  --> src/lib.rs:58:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | let mut sht20 = SHT20::new("/dev/i2c-3").unwrap();
[INFO] [stdout]   |                 ^^^^^ use of undeclared type or module `SHT20`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - SHT20::humidity (line 76) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `SHT20`
[INFO] [stdout]  --> src/lib.rs:77:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | let mut sht20 = SHT20::new("/dev/i2c-3").unwrap();
[INFO] [stdout]   |                 ^^^^^ use of undeclared type or module `SHT20`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - SHT20::humidity (line 76)
[INFO] [stdout]     src/lib.rs - SHT20::new (line 45)
[INFO] [stdout]     src/lib.rs - SHT20::temperature (line 57)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 3 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" "9ed68aff631eaf6fba18986b95e18bc595138ba120ed9c14728730d46f38e4ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ed68aff631eaf6fba18986b95e18bc595138ba120ed9c14728730d46f38e4ff", kill_on_drop: false }`
[INFO] [stdout] 9ed68aff631eaf6fba18986b95e18bc595138ba120ed9c14728730d46f38e4ff
