[INFO] fetching crate ddsi_log_parser 0.1.2...
[INFO] checking ddsi_log_parser-0.1.2 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate ddsi_log_parser 0.1.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate ddsi_log_parser 0.1.2 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ddsi_log_parser 0.1.2
[INFO] finished tweaking crates.io crate ddsi_log_parser 0.1.2
[INFO] tweaked toml for crates.io crate ddsi_log_parser 0.1.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate ddsi_log_parser 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "inspect" "0049d98ac04b0851ae87ff974d484c4467ef3685017f851a7dc06d1fe6ed82de", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `regex::Captures`
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use regex::Captures;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/lib.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{self, prelude::*, BufReader};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::Captures`
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use regex::Captures;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/lib.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{self, prelude::*, BufReader};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_capture` is never used
[INFO] [stdout]   --> src/ddsi_log_regex.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<'a> DdsiLogType<'a> {
[INFO] [stdout]    | ------------------------ method in this implementation
[INFO] [stdout] 22 |     pub fn get_capture(&self) -> &Captures<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_match` is never used
[INFO] [stdout]    --> src/ddsi_log_regex.rs:199:12
[INFO] [stdout]     |
[INFO] [stdout] 61  | impl DdsiLogRegex {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 199 |     pub fn is_match(&self, text: &str) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_system_id` is never used
[INFO] [stdout]   --> src/ddsi_participant.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl DdsiParticipant {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn get_system_id(&self) -> &String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |             ddsi_topology.update(dds_log_type);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 64 |             let _ = ddsi_topology.update(dds_log_type);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:215:9
[INFO] [stdout]     |
[INFO] [stdout] 215 |         state.serialize_field("system_id", &self.system_id);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 215 |         let _ = state.serialize_field("system_id", &self.system_id);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:216:9
[INFO] [stdout]     |
[INFO] [stdout] 216 |         state.serialize_field("hostname", &self.hostname);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 216 |         let _ = state.serialize_field("hostname", &self.hostname);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:217:9
[INFO] [stdout]     |
[INFO] [stdout] 217 |         state.serialize_field("readers", &self.readers);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let _ = state.serialize_field("readers", &self.readers);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:218:9
[INFO] [stdout]     |
[INFO] [stdout] 218 |         state.serialize_field("writers", &self.writers);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 218 |         let _ = state.serialize_field("writers", &self.writers);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:219:9
[INFO] [stdout]     |
[INFO] [stdout] 219 |         state.serialize_field("is_master", &self.is_master);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 219 |         let _ = state.serialize_field("is_master", &self.is_master);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:220:9
[INFO] [stdout]     |
[INFO] [stdout] 220 |         state.serialize_field("master_id", &self.master_id);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 220 |         let _ = state.serialize_field("master_id", &self.master_id);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |         state.serialize_field("topic", &self.topic);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 232 |         let _ = state.serialize_field("topic", &self.topic);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:233:9
[INFO] [stdout]     |
[INFO] [stdout] 233 |         state.serialize_field("partition", &self.partition);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 233 |         let _ = state.serialize_field("partition", &self.partition);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 234 |         state.serialize_field("created", &self.created);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 234 |         let _ = state.serialize_field("created", &self.created);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:235:9
[INFO] [stdout]     |
[INFO] [stdout] 235 |         state.serialize_field("deleted", &self.deleted);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 235 |         let _ = state.serialize_field("deleted", &self.deleted);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log`
[INFO] [stdout]  --> src/bin/ddsi_log_parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log`
[INFO] [stdout]  --> src/bin/ddsi_log_parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_match` is never used
[INFO] [stdout]    --> src/ddsi_log_regex.rs:199:12
[INFO] [stdout]     |
[INFO] [stdout] 61  | impl DdsiLogRegex {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 199 |     pub fn is_match(&self, text: &str) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_system_id` is never used
[INFO] [stdout]   --> src/ddsi_participant.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl DdsiParticipant {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn get_system_id(&self) -> &String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |             ddsi_topology.update(dds_log_type);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 64 |             let _ = ddsi_topology.update(dds_log_type);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:215:9
[INFO] [stdout]     |
[INFO] [stdout] 215 |         state.serialize_field("system_id", &self.system_id);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 215 |         let _ = state.serialize_field("system_id", &self.system_id);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:216:9
[INFO] [stdout]     |
[INFO] [stdout] 216 |         state.serialize_field("hostname", &self.hostname);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 216 |         let _ = state.serialize_field("hostname", &self.hostname);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:217:9
[INFO] [stdout]     |
[INFO] [stdout] 217 |         state.serialize_field("readers", &self.readers);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let _ = state.serialize_field("readers", &self.readers);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:218:9
[INFO] [stdout]     |
[INFO] [stdout] 218 |         state.serialize_field("writers", &self.writers);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 218 |         let _ = state.serialize_field("writers", &self.writers);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:219:9
[INFO] [stdout]     |
[INFO] [stdout] 219 |         state.serialize_field("is_master", &self.is_master);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 219 |         let _ = state.serialize_field("is_master", &self.is_master);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:220:9
[INFO] [stdout]     |
[INFO] [stdout] 220 |         state.serialize_field("master_id", &self.master_id);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 220 |         let _ = state.serialize_field("master_id", &self.master_id);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |         state.serialize_field("topic", &self.topic);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 232 |         let _ = state.serialize_field("topic", &self.topic);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:233:9
[INFO] [stdout]     |
[INFO] [stdout] 233 |         state.serialize_field("partition", &self.partition);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 233 |         let _ = state.serialize_field("partition", &self.partition);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 234 |         state.serialize_field("created", &self.created);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 234 |         let _ = state.serialize_field("created", &self.created);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/ddsi_participant.rs:235:9
[INFO] [stdout]     |
[INFO] [stdout] 235 |         state.serialize_field("deleted", &self.deleted);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 235 |         let _ = state.serialize_field("deleted", &self.deleted);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.24s
[INFO] running `Command { std: "docker" "inspect" "93d18315eb06763aada120a0a19d4c9bfc93ada05f14eab689a0d92b5786e906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93d18315eb06763aada120a0a19d4c9bfc93ada05f14eab689a0d92b5786e906", kill_on_drop: false }`
[INFO] [stdout] 93d18315eb06763aada120a0a19d4c9bfc93ada05f14eab689a0d92b5786e906