[INFO] fetching crate luftpost 1.0.0...
[INFO] checking luftpost-1.0.0 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] extracting crate luftpost 1.0.0 into /workspace/builds/worker-2-tc2/source
[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-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate luftpost 1.0.0 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9f19d5de4855dd59f68a66adcb9d696073a4842f91f9cc39c6bc59a0add79f9
[INFO] running `Command { std: "docker" "start" "-a" "f9f19d5de4855dd59f68a66adcb9d696073a4842f91f9cc39c6bc59a0add79f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9f19d5de4855dd59f68a66adcb9d696073a4842f91f9cc39c6bc59a0add79f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9f19d5de4855dd59f68a66adcb9d696073a4842f91f9cc39c6bc59a0add79f9", kill_on_drop: false }`
[INFO] [stdout] f9f19d5de4855dd59f68a66adcb9d696073a4842f91f9cc39c6bc59a0add79f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2de53aa6ef32853f024c55341326f6d8b76ff977cfcba6d536725e3d76c1e966
[INFO] running `Command { std: "docker" "start" "-a" "2de53aa6ef32853f024c55341326f6d8b76ff977cfcba6d536725e3d76c1e966", kill_on_drop: false }`
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[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)]` (part of `#[warn(unused)]`) on by default
[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] 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: 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)]` (part of `#[warn(unused)]`) on by default
[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] 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] ...  |
[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] 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] 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] 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] ...  |
[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] 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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible 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] 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: 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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible 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] 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] 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] 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] ...  |
[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] 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] ...  |
[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] 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/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] 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] 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] 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] 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.30s
[INFO] running `Command { std: "docker" "inspect" "2de53aa6ef32853f024c55341326f6d8b76ff977cfcba6d536725e3d76c1e966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2de53aa6ef32853f024c55341326f6d8b76ff977cfcba6d536725e3d76c1e966", kill_on_drop: false }`
[INFO] [stdout] 2de53aa6ef32853f024c55341326f6d8b76ff977cfcba6d536725e3d76c1e966