[INFO] updating cached repository https://github.com/Tylerflick/bme680-webthing [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 1a7b54dfab2be8ad14ab6b1f830ef3a58bfd9834 [INFO] checking Tylerflick/bme680-webthing against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTylerflick%2Fbme680-webthing" "/workspace/builds/worker-7/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Tylerflick/bme680-webthing on toolchain 45d050cde277b22a755847338f2acc2c7b834141 [INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"` [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-7/source/Cargo.toml [INFO] crate git repo https://github.com/Tylerflick/bme680-webthing already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"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" "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" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] fb1798866d9b56107bf34033ee374b9e7a3a7746d77478272cf90d7056f21f67 [INFO] running `"docker" "start" "-a" "fb1798866d9b56107bf34033ee374b9e7a3a7746d77478272cf90d7056f21f67"` [INFO] [stderr] Compiling libc v0.2.53 [INFO] [stderr] Checking cfg-if v0.1.7 [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling byteorder v1.3.1 [INFO] [stderr] Checking futures v0.1.26 [INFO] [stderr] Checking smallvec v0.6.9 [INFO] [stderr] Compiling cc v1.0.36 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling proc-macro2 v0.4.29 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling syn v0.15.33 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Checking lazycell v1.2.1 [INFO] [stderr] Compiling arrayvec v0.4.10 [INFO] [stderr] Checking rustc-demangle v0.1.14 [INFO] [stderr] Checking nodrop v0.1.13 [INFO] [stderr] Compiling serde v1.0.90 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Checking itoa v0.4.3 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Compiling regex v1.1.6 [INFO] [stderr] Compiling ryu v0.2.7 [INFO] [stderr] Compiling num-traits v0.2.6 [INFO] [stderr] Checking arc-swap v0.3.11 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Compiling num-integer v0.1.39 [INFO] [stderr] Compiling crc32fast v1.2.0 [INFO] [stderr] Compiling httparse v1.3.3 [INFO] [stderr] Checking version_check v0.1.5 [INFO] [stderr] Checking indexmap v1.0.2 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Checking string v0.1.3 [INFO] [stderr] Checking c_linked_list v1.1.1 [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] Compiling unicase v2.3.0 [INFO] [stderr] Compiling actix-web v0.7.19 [INFO] [stderr] Checking owning_ref v0.4.0 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking crossbeam-utils v0.6.5 [INFO] [stderr] Checking tokio-trace-core v0.1.0 [INFO] [stderr] Checking thread_local v0.3.6 [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 unicode-normalization v0.1.8 [INFO] [stderr] Checking regex-syntax v0.6.6 [INFO] [stderr] Checking lru-cache v0.1.2 [INFO] [stderr] Checking embedded-hal v0.2.2 [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 rand_isaac v0.1.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Compiling nix v0.6.0 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Checking crossbeam-channel v0.3.8 [INFO] [stderr] Checking bme680 v0.4.3 [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 base64 v0.10.1 [INFO] [stderr] Checking aho-corasick v0.7.3 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Compiling phf_shared v0.7.24 [INFO] [stderr] Checking crossbeam-epoch v0.7.1 [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 time v0.1.42 [INFO] [stderr] Checking hostname v0.1.5 [INFO] [stderr] Checking nix v0.11.0 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking get_if_addrs v0.5.3 [INFO] [stderr] Checking tokio-timer v0.2.10 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Checking mime v0.3.13 [INFO] [stderr] Checking phf v0.7.24 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Compiling backtrace-sys v0.1.28 [INFO] [stderr] Compiling brotli-sys v0.3.2 [INFO] [stderr] Compiling miniz-sys v0.1.11 [INFO] [stderr] Checking futures-cpupool v0.1.8 [INFO] [stderr] Checking resolv-conf v0.6.2 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking signal-hook v0.1.9 [INFO] [stderr] Checking mio v0.6.16 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking nix v0.10.0 [INFO] [stderr] Checking http v0.1.17 [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Checking chrono v0.4.6 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking flate2 v1.0.7 [INFO] [stderr] Checking tokio-threadpool v0.1.14 [INFO] [stderr] Checking uuid v0.7.4 [INFO] [stderr] Checking error-chain v0.12.0 [INFO] [stderr] Compiling phf_generator v0.7.24 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking spidev v0.3.0 [INFO] [stderr] Checking cookie v0.11.0 [INFO] [stderr] Compiling phf_codegen v0.7.24 [INFO] [stderr] Checking publicsuffix v1.5.2 [INFO] [stderr] Checking env_logger v0.6.1 [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-fs v0.1.6 [INFO] [stderr] Checking tokio-reactor v0.1.9 [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 tokio v0.1.19 [INFO] [stderr] Checking h2 v0.1.18 [INFO] [stderr] Checking i2cdev v0.4.1 [INFO] [stderr] Checking sysfs_gpio v0.5.3 [INFO] [stderr] Checking tokio-core v0.1.17 [INFO] [stderr] Checking linux-embedded-hal v0.2.2 [INFO] [stderr] Checking serde_json v1.0.39 [INFO] [stderr] Checking serde_urlencoded v0.5.5 [INFO] [stderr] Checking multimap v0.4.0 [INFO] [stderr] Checking libmdns v0.2.3 [INFO] [stderr] Checking brotli2 v0.3.2 [INFO] [stderr] Checking jsonway v2.0.0 [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] Compiling v_htmlescape v0.4.3 [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] 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] [stderr] warning: unused import: `embedded_hal::blocking::i2c` [INFO] [stderr] --> src/main.rs:22:5 [INFO] [stderr] | [INFO] [stderr] 22 | use embedded_hal::blocking::i2c; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::result` [INFO] [stderr] --> src/main.rs:24:5 [INFO] [stderr] | [INFO] [stderr] 24 | use std::result; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:32:32 [INFO] [stderr] | [INFO] [stderr] 32 | thing: Weak>>, [INFO] [stderr] | ^^^^^ help: use `dyn`: `dyn Thing` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `embedded_hal::blocking::i2c` [INFO] [stderr] --> src/main.rs:22:5 [INFO] [stderr] | [INFO] [stderr] 22 | use embedded_hal::blocking::i2c; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::result` [INFO] [stderr] --> src/main.rs:24:5 [INFO] [stderr] | [INFO] [stderr] 24 | use std::result; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:32:32 [INFO] [stderr] | [INFO] [stderr] 32 | thing: Weak>>, [INFO] [stderr] | ^^^^^ help: use `dyn`: `dyn Thing` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:35:21 [INFO] [stderr] | [INFO] [stderr] 35 | ) -> Option> { [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn Action` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:52:41 [INFO] [stderr] | [INFO] [stderr] 52 | fn make_temp_sensor() -> Arc>> { [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Thing + 'static` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:81:40 [INFO] [stderr] | [INFO] [stderr] 81 | fn make_hum_sensor() -> Arc>> { [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Thing + 'static` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:112:40 [INFO] [stderr] | [INFO] [stderr] 112 | let mut things: Vec>>> = Vec::new(); [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Thing + 'static` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:35:21 [INFO] [stderr] | [INFO] [stderr] 35 | ) -> Option> { [INFO] [stderr] | ^^^^^^ help: use `dyn`: `dyn Action` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:52:41 [INFO] [stderr] | [INFO] [stderr] 52 | fn make_temp_sensor() -> Arc>> { [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Thing + 'static` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:81:40 [INFO] [stderr] | [INFO] [stderr] 81 | fn make_hum_sensor() -> Arc>> { [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Thing + 'static` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:112:40 [INFO] [stderr] | [INFO] [stderr] 112 | let mut things: Vec>>> = Vec::new(); [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Thing + 'static` [INFO] [stderr] [INFO] [stderr] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `std::ops::Try`) [INFO] [stderr] --> src/main.rs:128:27 [INFO] [stderr] | [INFO] [stderr] 119 | thread::spawn(move || { [INFO] [stderr] | ___________________- [INFO] [stderr] 120 | | let mut rng = rand::thread_rng(); [INFO] [stderr] 121 | | [INFO] [stderr] 122 | | // Mimic an actual sensor updating its reading every couple seconds. [INFO] [stderr] ... | [INFO] [stderr] 128 | | let mut dev = Bme680::init(i2c, Delay {}, I2CAddress::Primary)?; [INFO] [stderr] | | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()` [INFO] [stderr] ... | [INFO] [stderr] 165 | | } [INFO] [stderr] 166 | | }); [INFO] [stderr] | |_____- this function should return `Result` or `Option` to accept `?` [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::ops::Try` is not implemented for `()` [INFO] [stderr] = note: required by `std::ops::Try::from_error` [INFO] [stderr] [INFO] [stderr] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `std::ops::Try`) [INFO] [stderr] --> src/main.rs:128:27 [INFO] [stderr] | [INFO] [stderr] 119 | thread::spawn(move || { [INFO] [stderr] | ___________________- [INFO] [stderr] 120 | | let mut rng = rand::thread_rng(); [INFO] [stderr] 121 | | [INFO] [stderr] 122 | | // Mimic an actual sensor updating its reading every couple seconds. [INFO] [stderr] ... | [INFO] [stderr] 128 | | let mut dev = Bme680::init(i2c, Delay {}, I2CAddress::Primary)?; [INFO] [stderr] | | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()` [INFO] [stderr] ... | [INFO] [stderr] 165 | | } [INFO] [stderr] 166 | | }); [INFO] [stderr] | |_____- this function should return `Result` or `Option` to accept `?` [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::ops::Try` is not implemented for `()` [INFO] [stderr] = note: required by `std::ops::Try::from_error` [INFO] [stderr] [INFO] [stderr] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `std::ops::Try`) [INFO] [stderr] --> src/main.rs:141:34 [INFO] [stderr] | [INFO] [stderr] 119 | thread::spawn(move || { [INFO] [stderr] | ___________________- [INFO] [stderr] 120 | | let mut rng = rand::thread_rng(); [INFO] [stderr] 121 | | [INFO] [stderr] 122 | | // Mimic an actual sensor updating its reading every couple seconds. [INFO] [stderr] ... | [INFO] [stderr] 141 | | let (data, _state) = dev.get_sensor_data()?; [INFO] [stderr] | | ^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()` [INFO] [stderr] ... | [INFO] [stderr] 165 | | } [INFO] [stderr] 166 | | }); [INFO] [stderr] | |_____- this function should return `Result` or `Option` to accept `?` [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::ops::Try` is not implemented for `()` [INFO] [stderr] = note: required by `std::ops::Try::from_error` [INFO] [stderr] [INFO] [stderr] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `std::ops::Try`) [INFO] [stderr] --> src/main.rs:141:34 [INFO] [stderr] | [INFO] [stderr] 119 | thread::spawn(move || { [INFO] [stderr] | ___________________- [INFO] [stderr] 120 | | let mut rng = rand::thread_rng(); [INFO] [stderr] 121 | | [INFO] [stderr] 122 | | // Mimic an actual sensor updating its reading every couple seconds. [INFO] [stderr] ... | [INFO] [stderr] 141 | | let (data, _state) = dev.get_sensor_data()?; [INFO] [stderr] | | ^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()` [INFO] [stderr] ... | [INFO] [stderr] 165 | | } [INFO] [stderr] 166 | | }); [INFO] [stderr] | |_____- this function should return `Result` or `Option` to accept `?` [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::ops::Try` is not implemented for `()` [INFO] [stderr] = note: required by `std::ops::Try::from_error` [INFO] [stderr] [INFO] [stderr] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `std::ops::Try`) [INFO] [stderr] --> src/main.rs:137:13 [INFO] [stderr] | [INFO] [stderr] 119 | thread::spawn(move || { [INFO] [stderr] | ___________________- [INFO] [stderr] 120 | | let mut rng = rand::thread_rng(); [INFO] [stderr] 121 | | [INFO] [stderr] 122 | | // Mimic an actual sensor updating its reading every couple seconds. [INFO] [stderr] ... | [INFO] [stderr] 137 | | dev.set_sensor_settings(settings)?; [INFO] [stderr] | | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()` [INFO] [stderr] ... | [INFO] [stderr] 165 | | } [INFO] [stderr] 166 | | }); [INFO] [stderr] | |_____- this function should return `Result` or `Option` to accept `?` [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::ops::Try` is not implemented for `()` [INFO] [stderr] = note: required by `std::ops::Try::from_error` [INFO] [stderr] [INFO] [stderr] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `std::ops::Try`) [INFO] [stderr] --> src/main.rs:137:13 [INFO] [stderr] | [INFO] [stderr] 119 | thread::spawn(move || { [INFO] [stderr] | ___________________- [INFO] [stderr] 120 | | let mut rng = rand::thread_rng(); [INFO] [stderr] 121 | | [INFO] [stderr] 122 | | // Mimic an actual sensor updating its reading every couple seconds. [INFO] [stderr] ... | [INFO] [stderr] 137 | | dev.set_sensor_settings(settings)?; [INFO] [stderr] | | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()` [INFO] [stderr] ... | [INFO] [stderr] 165 | | } [INFO] [stderr] 166 | | }); [INFO] [stderr] | |_____- this function should return `Result` or `Option` to accept `?` [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::ops::Try` is not implemented for `()` [INFO] [stderr] = note: required by `std::ops::Try::from_error` [INFO] [stderr] [INFO] [stderr] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `std::ops::Try`) [INFO] [stderr] --> src/main.rs:140:13 [INFO] [stderr] | [INFO] [stderr] 119 | thread::spawn(move || { [INFO] [stderr] | ___________________- [INFO] [stderr] 120 | | let mut rng = rand::thread_rng(); [INFO] [stderr] 121 | | [INFO] [stderr] 122 | | // Mimic an actual sensor updating its reading every couple seconds. [INFO] [stderr] ... | [INFO] [stderr] 140 | | dev.set_sensor_mode(PowerMode::ForcedMode)?; [INFO] [stderr] | | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()` [INFO] [stderr] ... | [INFO] [stderr] 165 | | } [INFO] [stderr] 166 | | }); [INFO] [stderr] | |_____- this function should return `Result` or `Option` to accept `?` [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::ops::Try` is not implemented for `()` [INFO] [stderr] = note: required by `std::ops::Try::from_error` [INFO] [stderr] [INFO] [stderr] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `std::ops::Try`) [INFO] [stderr] --> src/main.rs:140:13 [INFO] [stderr] | [INFO] [stderr] 119 | thread::spawn(move || { [INFO] [stderr] | ___________________- [INFO] [stderr] 120 | | let mut rng = rand::thread_rng(); [INFO] [stderr] 121 | | [INFO] [stderr] 122 | | // Mimic an actual sensor updating its reading every couple seconds. [INFO] [stderr] ... | [INFO] [stderr] 140 | | dev.set_sensor_mode(PowerMode::ForcedMode)?; [INFO] [stderr] | | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a closure that returns `()` [INFO] [stderr] ... | [INFO] [stderr] 165 | | } [INFO] [stderr] 166 | | }); [INFO] [stderr] | |_____- this function should return `Result` or `Option` to accept `?` [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::ops::Try` is not implemented for `()` [INFO] [stderr] = note: required by `std::ops::Try::from_error` [INFO] [stderr] [INFO] [stderr] error: aborting due to 4 previous errors; 7 warnings emitted [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0277`. [INFO] [stderr] error: aborting due to 4 previous errors; 7 warnings emitted [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0277`. [INFO] [stderr] error: could not compile `bme680-webthing`. [INFO] [stderr] [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: could not compile `bme680-webthing`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "fb1798866d9b56107bf34033ee374b9e7a3a7746d77478272cf90d7056f21f67"` [INFO] running `"docker" "rm" "-f" "fb1798866d9b56107bf34033ee374b9e7a3a7746d77478272cf90d7056f21f67"` [INFO] [stdout] fb1798866d9b56107bf34033ee374b9e7a3a7746d77478272cf90d7056f21f67