[INFO] fetching crate luftpost 1.0.0...
[INFO] checking luftpost-1.0.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate luftpost 1.0.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate luftpost 1.0.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate luftpost 1.0.0
[INFO] finished tweaking crates.io crate luftpost 1.0.0
[INFO] tweaked toml for crates.io crate luftpost 1.0.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 185 packages
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[INFO] [stderr]       Adding parking_lot v0.9.0 (latest: v0.12.1)
[INFO] [stderr]       Adding parking_lot_core v0.6.3 (latest: v0.9.9)
[INFO] [stderr]       Adding percent-encoding v1.0.1 (latest: v2.3.1)
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] [stderr]   Downloaded email v0.0.21
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[INFO] [stderr]   Downloaded pest v0.3.3
[INFO] [stderr]   Downloaded handlebars v0.27.0
[INFO] [stderr]   Downloaded mktemp v0.3.1
[INFO] [stderr]   Downloaded pretty_assertions v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5777570fc26ed07c8d7a3915aae1a920ef180a2d75e44f7c2935e95337c0c2d2
[INFO] running `Command { std: "docker" "start" "-a" "5777570fc26ed07c8d7a3915aae1a920ef180a2d75e44f7c2935e95337c0c2d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5777570fc26ed07c8d7a3915aae1a920ef180a2d75e44f7c2935e95337c0c2d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5777570fc26ed07c8d7a3915aae1a920ef180a2d75e44f7c2935e95337c0c2d2", kill_on_drop: false }`
[INFO] [stdout] 5777570fc26ed07c8d7a3915aae1a920ef180a2d75e44f7c2935e95337c0c2d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1d4f5ea7f8e04ccf92cebd9749d6ed9d99dc487a7a55795028197a171558aa9
[INFO] running `Command { std: "docker" "start" "-a" "d1d4f5ea7f8e04ccf92cebd9749d6ed9d99dc487a7a55795028197a171558aa9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
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[INFO] [stderr]     Checking lazy_static v1.4.0
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[INFO] [stderr]    Compiling rustc_version v0.2.3
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[INFO] [stderr]    Compiling parking_lot_core v0.6.3
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[INFO] [stderr]    Compiling email v0.0.21
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[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking vec_map v0.8.2
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[INFO] [stderr]     Checking mime v0.3.17
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking handlebars v0.27.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking tabwriter v1.4.0
[INFO] [stderr]     Checking hyper v0.11.27
[INFO] [stderr]     Checking uuid v0.1.18
[INFO] [stderr]     Checking difference v1.0.0
[INFO] [stderr]     Checking pretty_assertions v0.1.2
[INFO] [stderr]     Checking mktemp v0.3.1
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking lettre v0.6.3
[INFO] [stderr]     Checking luftpost v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `toml` is imported redundantly
[INFO] [stdout]   --> src/config.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | use toml;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate toml;
[INFO] [stdout]    | ------------------ the item `toml` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute `allow`
[INFO] [stdout]   --> src/mail.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[allow(large_enum_variant)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the built-in attribute `allow` will be ignored, since it's applied to the macro invocation `error_chain`
[INFO] [stdout]   --> src/mail.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | error_chain!{
[INFO] [stdout]    | ^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]    --> src/measurement.rs:233:9
[INFO] [stdout]     |
[INFO] [stdout] 233 |     use serde_json;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:11:1
[INFO] [stdout]     |
[INFO] [stdout] 11  | extern crate serde_json;
[INFO] [stdout]     | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/state.rs:2:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Measurement` is imported redundantly
[INFO] [stdout]   --> src/check.rs:30:23
[INFO] [stdout]    |
[INFO] [stdout] 29 |     use super::*;
[INFO] [stdout]    |         -------- the item `Measurement` is already imported here
[INFO] [stdout] 30 |     use measurement::{Measurement, Value};
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]   --> src/check.rs:30:36
[INFO] [stdout]    |
[INFO] [stdout] 29 |     use super::*;
[INFO] [stdout]    |         -------- the item `Value` is already imported here
[INFO] [stdout] 30 |     use measurement::{Measurement, Value};
[INFO] [stdout]    |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `toml` is imported redundantly
[INFO] [stdout]   --> src/config.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | use toml;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate toml;
[INFO] [stdout]    | ------------------ the item `toml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute `allow`
[INFO] [stdout]   --> src/mail.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[allow(large_enum_variant)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the built-in attribute `allow` will be ignored, since it's applied to the macro invocation `error_chain`
[INFO] [stdout]   --> src/mail.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | error_chain!{
[INFO] [stdout]    | ^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StubEmailTransport` is imported redundantly
[INFO] [stdout]    --> src/mail.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     use super::*;
[INFO] [stdout]     |         -------- the item `StubEmailTransport` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 136 |     use lettre::transport::stub::StubEmailTransport;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]    --> src/measurement.rs:233:9
[INFO] [stdout]     |
[INFO] [stdout] 233 |     use serde_json;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:11:1
[INFO] [stdout]     |
[INFO] [stdout] 11  | extern crate serde_json;
[INFO] [stdout]     | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/state.rs:2:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/config.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | / error_chain! {
[INFO] [stdout] 12 | |     errors {
[INFO] [stdout] 13 | |     }
[INFO] [stdout] 14 | |     foreign_links {
[INFO] [stdout] ...  |
[INFO] [stdout] 17 | |     }
[INFO] [stdout] 18 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mail.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / error_chain!{
[INFO] [stdout] 13 | |     errors {
[INFO] [stdout] 14 | |     }
[INFO] [stdout] 15 | |     foreign_links {
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |     }
[INFO] [stdout] 24 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/sensor.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | / error_chain! {
[INFO] [stdout] 10 | |     errors {
[INFO] [stdout] 11 | |
[INFO] [stdout] 12 | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |     }
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/state.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / error_chain! {
[INFO] [stdout] 8  | |     errors {
[INFO] [stdout] 9  | |         FailedToLoadState(sensor: String, state_dir: String) {
[INFO] [stdout] 10 | |             description("failed to load state")
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |     }
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/config.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | / error_chain! {
[INFO] [stdout] 12 | |     errors {
[INFO] [stdout] 13 | |     }
[INFO] [stdout] 14 | |     foreign_links {
[INFO] [stdout] ...  |
[INFO] [stdout] 17 | |     }
[INFO] [stdout] 18 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mail.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / error_chain!{
[INFO] [stdout] 13 | |     errors {
[INFO] [stdout] 14 | |     }
[INFO] [stdout] 15 | |     foreign_links {
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |     }
[INFO] [stdout] 24 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/sensor.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | / error_chain! {
[INFO] [stdout] 10 | |     errors {
[INFO] [stdout] 11 | |
[INFO] [stdout] 12 | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |     }
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/state.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / error_chain! {
[INFO] [stdout] 8  | |     errors {
[INFO] [stdout] 9  | |         FailedToLoadState(sensor: String, state_dir: String) {
[INFO] [stdout] 10 | |             description("failed to load state")
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |     }
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/sensor.rs:54:14
[INFO] [stdout]    |
[INFO] [stdout] 54 |     ) -> Box<Future<Item = Measurement, Error = Error>> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 54 |     ) -> Box<dyn Future<Item = Measurement, Error = Error>> {
[INFO] [stdout]    |              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/sensor.rs:54:14
[INFO] [stdout]    |
[INFO] [stdout] 54 |     ) -> Box<Future<Item = Measurement, Error = Error>> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 54 |     ) -> Box<dyn Future<Item = Measurement, Error = Error>> {
[INFO] [stdout]    |              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/config.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | / error_chain! {
[INFO] [stdout] 12 | |     errors {
[INFO] [stdout] 13 | |     }
[INFO] [stdout] 14 | |     foreign_links {
[INFO] [stdout] ...  |
[INFO] [stdout] 17 | |     }
[INFO] [stdout] 18 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/config.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | / error_chain! {
[INFO] [stdout] 12 | |     errors {
[INFO] [stdout] 13 | |     }
[INFO] [stdout] 14 | |     foreign_links {
[INFO] [stdout] ...  |
[INFO] [stdout] 17 | |     }
[INFO] [stdout] 18 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/mail.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / error_chain!{
[INFO] [stdout] 13 | |     errors {
[INFO] [stdout] 14 | |     }
[INFO] [stdout] 15 | |     foreign_links {
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |     }
[INFO] [stdout] 24 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/mail.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / error_chain!{
[INFO] [stdout] 13 | |     errors {
[INFO] [stdout] 14 | |     }
[INFO] [stdout] 15 | |     foreign_links {
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |     }
[INFO] [stdout] 24 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/sensor.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | / error_chain! {
[INFO] [stdout] 10 | |     errors {
[INFO] [stdout] 11 | |
[INFO] [stdout] 12 | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |     }
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/state.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / error_chain! {
[INFO] [stdout] 8  | |     errors {
[INFO] [stdout] 9  | |         FailedToLoadState(sensor: String, state_dir: String) {
[INFO] [stdout] 10 | |             description("failed to load state")
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |     }
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/sensor.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | / error_chain! {
[INFO] [stdout] 10 | |     errors {
[INFO] [stdout] 11 | |
[INFO] [stdout] 12 | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |     }
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/state.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / error_chain! {
[INFO] [stdout] 8  | |     errors {
[INFO] [stdout] 9  | |         FailedToLoadState(sensor: String, state_dir: String) {
[INFO] [stdout] 10 | |             description("failed to load state")
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |     }
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / error_chain! {
[INFO] [stdout] 22 | |     errors {
[INFO] [stdout] 23 | |     }
[INFO] [stdout] 24 | |     links {
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |     }
[INFO] [stdout] 33 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / error_chain! {
[INFO] [stdout] 22 | |     errors {
[INFO] [stdout] 23 | |     }
[INFO] [stdout] 24 | |     links {
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |     }
[INFO] [stdout] 33 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/main.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / error_chain! {
[INFO] [stdout] 22 | |     errors {
[INFO] [stdout] 23 | |     }
[INFO] [stdout] 24 | |     links {
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |     }
[INFO] [stdout] 33 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/main.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / error_chain! {
[INFO] [stdout] 22 | |     errors {
[INFO] [stdout] 23 | |     }
[INFO] [stdout] 24 | |     links {
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |     }
[INFO] [stdout] 33 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.79s
[INFO] running `Command { std: "docker" "inspect" "d1d4f5ea7f8e04ccf92cebd9749d6ed9d99dc487a7a55795028197a171558aa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1d4f5ea7f8e04ccf92cebd9749d6ed9d99dc487a7a55795028197a171558aa9", kill_on_drop: false }`
[INFO] [stdout] d1d4f5ea7f8e04ccf92cebd9749d6ed9d99dc487a7a55795028197a171558aa9