[INFO] fetching crate o2 0.0.1...
[INFO] testing o2-0.0.1 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate o2 0.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate o2 0.0.1
[INFO] finished tweaking crates.io crate o2 0.0.1
[INFO] tweaked toml for crates.io crate o2 0.0.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate o2 0.0.1 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate o2 0.0.1 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06d37de4e4888cf706d801dc0efcc597e5257da94951c6dbcd7193d7bc29c876
[INFO] running `Command { std: "docker" "start" "-a" "06d37de4e4888cf706d801dc0efcc597e5257da94951c6dbcd7193d7bc29c876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06d37de4e4888cf706d801dc0efcc597e5257da94951c6dbcd7193d7bc29c876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06d37de4e4888cf706d801dc0efcc597e5257da94951c6dbcd7193d7bc29c876", kill_on_drop: false }`
[INFO] [stdout] 06d37de4e4888cf706d801dc0efcc597e5257da94951c6dbcd7193d7bc29c876
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8011bdbb7139e58d17ef22fc399ab59c1ceecfe3a23169dd8f7b5f808fb2da6
[INFO] running `Command { std: "docker" "start" "-a" "e8011bdbb7139e58d17ef22fc399ab59c1ceecfe3a23169dd8f7b5f808fb2da6", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling rustix v1.0.7
[INFO] [stderr]    Compiling anstyle v1.0.10
[INFO] [stderr]    Compiling colorchoice v1.0.3
[INFO] [stderr]    Compiling anstyle-query v1.1.2
[INFO] [stderr]    Compiling clap_lex v0.7.4
[INFO] [stderr]    Compiling anstyle-parse v0.2.6
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling anstream v0.6.18
[INFO] [stderr]    Compiling terminal_size v0.4.2
[INFO] [stderr]    Compiling clap_builder v4.5.38
[INFO] [stderr]    Compiling clap_derive v4.5.32
[INFO] [stderr]    Compiling clap v4.5.38
[INFO] [stderr]    Compiling o2 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Command`
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use clap::{Command, Parser, Subcommand, ValueEnum};
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/registry.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `formulation`
[INFO] [stdout]   --> src/registry.rs:20:27
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn process(&self, formulation: Formulation) {
[INFO] [stdout]    |                           ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_formulation`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/main.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 |     if let Commands::New { formulation } = args.command {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormulationCommands` is never constructed
[INFO] [stdout]   --> src/main.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct FormulationCommands {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `echo_cmd` is never used
[INFO] [stdout]   --> src/main.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn echo_cmd() -> Cmd {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `o2_rust_app_cmd` is never used
[INFO] [stdout]   --> src/main.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn o2_rust_app_cmd() -> Cmd {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `exec_mode` is never read
[INFO] [stdout]   --> src/formulation_provider.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct MyCommand {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout]  9 |     pub command: Command,
[INFO] [stdout] 10 |     pub exec_mode: ExecMode,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `extend_commands` is never used
[INFO] [stdout]   --> src/formulation_provider.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub trait CommandProvider {
[INFO] [stdout]    |           --------------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn extend_commands(ctx: &Self::Context, existing: &mut Vec<MyCommand>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.04s
[INFO] running `Command { std: "docker" "inspect" "e8011bdbb7139e58d17ef22fc399ab59c1ceecfe3a23169dd8f7b5f808fb2da6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8011bdbb7139e58d17ef22fc399ab59c1ceecfe3a23169dd8f7b5f808fb2da6", kill_on_drop: false }`
[INFO] [stdout] e8011bdbb7139e58d17ef22fc399ab59c1ceecfe3a23169dd8f7b5f808fb2da6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a05f9def310f79c28cff993fed18a3765043d108a09df2c3b6f406d62372e2c
[INFO] running `Command { std: "docker" "start" "-a" "9a05f9def310f79c28cff993fed18a3765043d108a09df2c3b6f406d62372e2c", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling o2 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Command`
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use clap::{Command, Parser, Subcommand, ValueEnum};
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/registry.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `formulation`
[INFO] [stdout]   --> src/registry.rs:20:27
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn process(&self, formulation: Formulation) {
[INFO] [stdout]    |                           ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_formulation`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/main.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 |     if let Commands::New { formulation } = args.command {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FormulationCommands` is never constructed
[INFO] [stdout]   --> src/main.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct FormulationCommands {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `echo_cmd` is never used
[INFO] [stdout]   --> src/main.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn echo_cmd() -> Cmd {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `o2_rust_app_cmd` is never used
[INFO] [stdout]   --> src/main.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn o2_rust_app_cmd() -> Cmd {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `exec_mode` is never read
[INFO] [stdout]   --> src/formulation_provider.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct MyCommand {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout]  9 |     pub command: Command,
[INFO] [stdout] 10 |     pub exec_mode: ExecMode,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `extend_commands` is never used
[INFO] [stdout]   --> src/formulation_provider.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub trait CommandProvider {
[INFO] [stdout]    |           --------------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn extend_commands(ctx: &Self::Context, existing: &mut Vec<MyCommand>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "9a05f9def310f79c28cff993fed18a3765043d108a09df2c3b6f406d62372e2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a05f9def310f79c28cff993fed18a3765043d108a09df2c3b6f406d62372e2c", kill_on_drop: false }`
[INFO] [stdout] 9a05f9def310f79c28cff993fed18a3765043d108a09df2c3b6f406d62372e2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6155b81a1fcc58968ccc8d3011bb9e44f7d49545892dd5898223cbd4be6f2254
[INFO] running `Command { std: "docker" "start" "-a" "6155b81a1fcc58968ccc8d3011bb9e44f7d49545892dd5898223cbd4be6f2254", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr] warning: unused import: `Command`
[INFO] [stderr]  --> src/main.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | use clap::{Command, Parser, Subcommand, ValueEnum};
[INFO] [stderr]   |            ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> src/registry.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `formulation`
[INFO] [stderr]   --> src/registry.rs:20:27
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn process(&self, formulation: Formulation) {
[INFO] [stderr]    |                           ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_formulation`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable `if let` pattern
[INFO] [stderr]   --> src/main.rs:63:8
[INFO] [stderr]    |
[INFO] [stderr] 63 |     if let Commands::New { formulation } = args.command {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stderr]    = help: consider replacing the `if let` with a `let`
[INFO] [stderr]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `FormulationCommands` is never constructed
[INFO] [stderr]   --> src/main.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct FormulationCommands {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `echo_cmd` is never used
[INFO] [stderr]   --> src/main.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn echo_cmd() -> Cmd {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `o2_rust_app_cmd` is never used
[INFO] [stderr]   --> src/main.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn o2_rust_app_cmd() -> Cmd {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `exec_mode` is never read
[INFO] [stderr]   --> src/formulation_provider.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr]  8 | pub struct MyCommand {
[INFO] [stderr]    |            --------- field in this struct
[INFO] [stderr]  9 |     pub command: Command,
[INFO] [stderr] 10 |     pub exec_mode: ExecMode,
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `extend_commands` is never used
[INFO] [stderr]   --> src/formulation_provider.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub trait CommandProvider {
[INFO] [stderr]    |           --------------- associated function in this trait
[INFO] [stderr] ...
[INFO] [stderr] 26 |     fn extend_commands(ctx: &Self::Context, existing: &mut Vec<MyCommand>) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `o2` (bin "o2" test) generated 9 warnings (run `cargo fix --bin "o2" -p o2 --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/o2-cb437012e5b47d8b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6155b81a1fcc58968ccc8d3011bb9e44f7d49545892dd5898223cbd4be6f2254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6155b81a1fcc58968ccc8d3011bb9e44f7d49545892dd5898223cbd4be6f2254", kill_on_drop: false }`
[INFO] [stdout] 6155b81a1fcc58968ccc8d3011bb9e44f7d49545892dd5898223cbd4be6f2254