[INFO] cloning repository https://github.com/Tylerflick/bme680-webthing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Tylerflick/bme680-webthing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTylerflick%2Fbme680-webthing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTylerflick%2Fbme680-webthing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a7b54dfab2be8ad14ab6b1f830ef3a58bfd9834
[INFO] checking Tylerflick/bme680-webthing against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTylerflick%2Fbme680-webthing" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Tylerflick/bme680-webthing on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Tylerflick/bme680-webthing
[INFO] finished tweaking git repo https://github.com/Tylerflick/bme680-webthing
[INFO] tweaked toml for git repo https://github.com/Tylerflick/bme680-webthing written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Tylerflick/bme680-webthing already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded embedded-hal v0.2.2
[INFO] [stderr]   Downloaded sysfs_gpio v0.5.3
[INFO] [stderr]   Downloaded nix v0.6.0
[INFO] [stderr]   Downloaded linux-embedded-hal v0.2.2
[INFO] [stderr]   Downloaded jsonway v2.0.0
[INFO] [stderr]   Downloaded spidev v0.3.0
[INFO] [stderr]   Downloaded valico v2.4.2
[INFO] [stderr]   Downloaded i2cdev v0.4.1
[INFO] [stderr]   Downloaded valico v3.0.0
[INFO] [stderr]   Downloaded libmdns v0.2.3
[INFO] [stderr]   Downloaded socket2 v0.2.4
[INFO] [stderr]   Downloaded webthing v0.11.0
[INFO] [stderr]   Downloaded bme680 v0.4.3
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", 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] aac1d870cd275496fffffe1fc672acb456ad58a489429bab65d259bc1502eb90
[INFO] running `Command { std: "docker" "start" "-a" "aac1d870cd275496fffffe1fc672acb456ad58a489429bab65d259bc1502eb90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aac1d870cd275496fffffe1fc672acb456ad58a489429bab65d259bc1502eb90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aac1d870cd275496fffffe1fc672acb456ad58a489429bab65d259bc1502eb90", kill_on_drop: false }`
[INFO] [stdout] aac1d870cd275496fffffe1fc672acb456ad58a489429bab65d259bc1502eb90
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--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] c7aca3db6075484c51b4607f24043209e7de2a3b89e7cf05a94e3f346d8f827e
[INFO] running `Command { std: "docker" "start" "-a" "c7aca3db6075484c51b4607f24043209e7de2a3b89e7cf05a94e3f346d8f827e", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]     Checking futures v0.1.26
[INFO] [stderr]     Checking smallvec v0.6.9
[INFO] [stderr]    Compiling cc v1.0.36
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking rustc-demangle v0.1.14
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling regex v1.1.6
[INFO] [stderr]     Checking arc-swap v0.3.11
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking version_check v0.1.5
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]     Checking indexmap v1.0.2
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking string v0.1.3
[INFO] [stderr]     Checking nb v0.1.2
[INFO] [stderr]     Checking bitflags v0.3.3
[INFO] [stderr]     Checking c_linked_list v1.1.1
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling v_escape v0.7.2
[INFO] [stderr]     Checking tokio-trace-core v0.1.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling unicase v2.3.0
[INFO] [stderr]    Compiling actix-web v0.7.19
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]     Checking embedded-hal v0.2.2
[INFO] [stderr]    Compiling libc v0.2.53
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking tokio-executor v0.1.7
[INFO] [stderr]     Checking tokio-sync v0.1.5
[INFO] [stderr]     Checking tower-service v0.1.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking signal-hook-registry v1.0.1
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking nix v0.11.0
[INFO] [stderr]     Checking get_if_addrs v0.5.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking bme680 v0.4.3
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]     Checking tokio-timer v0.2.10
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking resolv-conf v0.6.2
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking signal-hook v0.1.9
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]     Checking mime v0.3.13
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.17
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking flate2 v1.0.7
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking cookie v0.11.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.14
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]    Compiling valico v2.4.2
[INFO] [stderr]    Compiling valico v3.0.0
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]     Checking publicsuffix v1.5.2
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking spidev v0.3.0
[INFO] [stderr]     Checking i2cdev v0.4.1
[INFO] [stderr]     Checking tokio v0.1.19
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking h2 v0.1.18
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking multimap v0.4.0
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking sysfs_gpio v0.5.3
[INFO] [stderr]     Checking libmdns v0.2.3
[INFO] [stderr]     Checking linux-embedded-hal v0.2.2
[INFO] [stderr]     Checking jsonway v2.0.0
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling v_escape_derive v0.5.3
[INFO] [stderr]    Compiling actix_derive v0.3.2
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking trust-dns-proto v0.6.3
[INFO] [stderr]     Checking trust-dns-proto v0.5.0
[INFO] [stderr]    Compiling v_htmlescape v0.4.3
[INFO] [stderr]     Checking trust-dns-resolver v0.10.3
[INFO] [stderr]     Checking actix v0.7.9
[INFO] [stderr]     Checking actix-net v0.2.6
[INFO] [stderr]     Checking webthing v0.11.0
[INFO] [stderr]     Checking bme680-webthing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `embedded_hal::blocking::i2c`
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use embedded_hal::blocking::i2c;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::result`
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use std::result;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:32:32
[INFO] [stdout]    |
[INFO] [stdout] 32 |         thing: Weak<RwLock<Box<Thing>>>,
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Thing`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |     ) -> Option<Box<Action>> {
[INFO] [stdout]    |                     ^^^^^^ help: use `dyn`: `dyn Action`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:52:41
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn make_temp_sensor() -> Arc<RwLock<Box<Thing + 'static>>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Thing + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:81:40
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn make_hum_sensor() -> Arc<RwLock<Box<Thing + 'static>>> {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Thing + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:112:40
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let mut things: Vec<Arc<RwLock<Box<Thing + 'static>>>> = Vec::new();
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Thing + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `embedded_hal::blocking::i2c`
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use embedded_hal::blocking::i2c;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::result`
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use std::result;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:32:32
[INFO] [stdout]    |
[INFO] [stdout] 32 |         thing: Weak<RwLock<Box<Thing>>>,
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Thing`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |     ) -> Option<Box<Action>> {
[INFO] [stdout]    |                     ^^^^^^ help: use `dyn`: `dyn Action`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:52:41
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn make_temp_sensor() -> Arc<RwLock<Box<Thing + 'static>>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Thing + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:81:40
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn make_hum_sensor() -> Arc<RwLock<Box<Thing + 'static>>> {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Thing + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:112:40
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let mut things: Vec<Arc<RwLock<Box<Thing + 'static>>>> = Vec::new();
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Thing + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `Try`)
[INFO] [stdout]    --> src/main.rs:128:27
[INFO] [stdout]     |
[INFO] [stdout] 119 |       thread::spawn(move || {
[INFO] [stdout]     |  ___________________-
[INFO] [stdout] 120 | |         let mut rng = rand::thread_rng();
[INFO] [stdout] 121 | |
[INFO] [stdout] 122 | |         // Mimic an actual sensor updating its reading every couple seconds.
[INFO] [stdout] ...   |
[INFO] [stdout] 128 | |             let mut dev = Bme680::init(i2c, Delay {}, I2CAddress::Primary)?;
[INFO] [stdout]     | |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()`
[INFO] [stdout] ...   |
[INFO] [stdout] 165 | |         }
[INFO] [stdout] 166 | |     });
[INFO] [stdout]     | |_____- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Try` is not implemented for `()`
[INFO] [stdout]     = note: required by `from_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `Try`)
[INFO] [stdout]    --> src/main.rs:141:34
[INFO] [stdout]     |
[INFO] [stdout] 119 |       thread::spawn(move || {
[INFO] [stdout]     |  ___________________-
[INFO] [stdout] 120 | |         let mut rng = rand::thread_rng();
[INFO] [stdout] 121 | |
[INFO] [stdout] 122 | |         // Mimic an actual sensor updating its reading every couple seconds.
[INFO] [stdout] ...   |
[INFO] [stdout] 141 | |             let (data, _state) = dev.get_sensor_data()?;
[INFO] [stdout]     | |                                  ^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()`
[INFO] [stdout] ...   |
[INFO] [stdout] 165 | |         }
[INFO] [stdout] 166 | |     });
[INFO] [stdout]     | |_____- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Try` is not implemented for `()`
[INFO] [stdout]     = note: required by `from_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `Try`)
[INFO] [stdout]    --> src/main.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |       thread::spawn(move || {
[INFO] [stdout]     |  ___________________-
[INFO] [stdout] 120 | |         let mut rng = rand::thread_rng();
[INFO] [stdout] 121 | |
[INFO] [stdout] 122 | |         // Mimic an actual sensor updating its reading every couple seconds.
[INFO] [stdout] ...   |
[INFO] [stdout] 137 | |             dev.set_sensor_settings(settings)?;
[INFO] [stdout]     | |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()`
[INFO] [stdout] ...   |
[INFO] [stdout] 165 | |         }
[INFO] [stdout] 166 | |     });
[INFO] [stdout]     | |_____- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Try` is not implemented for `()`
[INFO] [stdout]     = note: required by `from_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `Try`)
[INFO] [stdout]    --> src/main.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |       thread::spawn(move || {
[INFO] [stdout]     |  ___________________-
[INFO] [stdout] 120 | |         let mut rng = rand::thread_rng();
[INFO] [stdout] 121 | |
[INFO] [stdout] 122 | |         // Mimic an actual sensor updating its reading every couple seconds.
[INFO] [stdout] ...   |
[INFO] [stdout] 140 | |             dev.set_sensor_mode(PowerMode::ForcedMode)?;
[INFO] [stdout]     | |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()`
[INFO] [stdout] ...   |
[INFO] [stdout] 165 | |         }
[INFO] [stdout] 166 | |     });
[INFO] [stdout]     | |_____- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Try` is not implemented for `()`
[INFO] [stdout]     = note: required by `from_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `Try`)
[INFO] [stdout]    --> src/main.rs:128:27
[INFO] [stdout]     |
[INFO] [stdout] 119 |       thread::spawn(move || {
[INFO] [stdout]     |  ___________________-
[INFO] [stdout] 120 | |         let mut rng = rand::thread_rng();
[INFO] [stdout] 121 | |
[INFO] [stdout] 122 | |         // Mimic an actual sensor updating its reading every couple seconds.
[INFO] [stdout] ...   |
[INFO] [stdout] 128 | |             let mut dev = Bme680::init(i2c, Delay {}, I2CAddress::Primary)?;
[INFO] [stdout]     | |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()`
[INFO] [stdout] ...   |
[INFO] [stdout] 165 | |         }
[INFO] [stdout] 166 | |     });
[INFO] [stdout]     | |_____- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Try` is not implemented for `()`
[INFO] [stdout]     = note: required by `from_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `Try`)
[INFO] [stdout]    --> src/main.rs:141:34
[INFO] [stdout]     |
[INFO] [stdout] 119 |       thread::spawn(move || {
[INFO] [stdout]     |  ___________________-
[INFO] [stdout] 120 | |         let mut rng = rand::thread_rng();
[INFO] [stdout] 121 | |
[INFO] [stdout] 122 | |         // Mimic an actual sensor updating its reading every couple seconds.
[INFO] [stdout] ...   |
[INFO] [stdout] 141 | |             let (data, _state) = dev.get_sensor_data()?;
[INFO] [stdout]     | |                                  ^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()`
[INFO] [stdout] ...   |
[INFO] [stdout] 165 | |         }
[INFO] [stdout] 166 | |     });
[INFO] [stdout]     | |_____- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Try` is not implemented for `()`
[INFO] [stdout]     = note: required by `from_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `Try`)
[INFO] [stdout]    --> src/main.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |       thread::spawn(move || {
[INFO] [stdout]     |  ___________________-
[INFO] [stdout] 120 | |         let mut rng = rand::thread_rng();
[INFO] [stdout] 121 | |
[INFO] [stdout] 122 | |         // Mimic an actual sensor updating its reading every couple seconds.
[INFO] [stdout] ...   |
[INFO] [stdout] 137 | |             dev.set_sensor_settings(settings)?;
[INFO] [stdout]     | |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()`
[INFO] [stdout] ...   |
[INFO] [stdout] 165 | |         }
[INFO] [stdout] 166 | |     });
[INFO] [stdout]     | |_____- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Try` is not implemented for `()`
[INFO] [stdout]     = note: required by `from_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `Try`)
[INFO] [stdout]    --> src/main.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |       thread::spawn(move || {
[INFO] [stdout]     |  ___________________-
[INFO] [stdout] 120 | |         let mut rng = rand::thread_rng();
[INFO] [stdout] 121 | |
[INFO] [stdout] 122 | |         // Mimic an actual sensor updating its reading every couple seconds.
[INFO] [stdout] ...   |
[INFO] [stdout] 140 | |             dev.set_sensor_mode(PowerMode::ForcedMode)?;
[INFO] [stdout]     | |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()`
[INFO] [stdout] ...   |
[INFO] [stdout] 165 | |         }
[INFO] [stdout] 166 | |     });
[INFO] [stdout]     | |_____- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Try` is not implemented for `()`
[INFO] [stdout]     = note: required by `from_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bme680-webthing`.
[INFO] [stdout] error: aborting due to 4 previous errors; 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c7aca3db6075484c51b4607f24043209e7de2a3b89e7cf05a94e3f346d8f827e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7aca3db6075484c51b4607f24043209e7de2a3b89e7cf05a94e3f346d8f827e", kill_on_drop: false }`
[INFO] [stdout] c7aca3db6075484c51b4607f24043209e7de2a3b89e7cf05a94e3f346d8f827e
