[INFO] cloning repository https://github.com/gringonivoli/rust-commands
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gringonivoli/rust-commands" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgringonivoli%2Frust-commands", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgringonivoli%2Frust-commands'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a50f0816b13d791d1c4b3e7980da65e7df308ff2
[INFO] checking gringonivoli/rust-commands against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgringonivoli%2Frust-commands" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gringonivoli/rust-commands 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 git repo https://github.com/gringonivoli/rust-commands
[INFO] finished tweaking git repo https://github.com/gringonivoli/rust-commands
[INFO] tweaked toml for git repo https://github.com/gringonivoli/rust-commands written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gringonivoli/rust-commands 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 }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 660fac979e017150683d85ebcd74ecd339f93964052c768f7c6b9afd6a6a04f0
[INFO] running `Command { std: "docker" "start" "-a" "660fac979e017150683d85ebcd74ecd339f93964052c768f7c6b9afd6a6a04f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "660fac979e017150683d85ebcd74ecd339f93964052c768f7c6b9afd6a6a04f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "660fac979e017150683d85ebcd74ecd339f93964052c768f7c6b9afd6a6a04f0", kill_on_drop: false }`
[INFO] [stdout] 660fac979e017150683d85ebcd74ecd339f93964052c768f7c6b9afd6a6a04f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 406497376e1a75a70a46e43fba738d0c962a0afe58c692af7f9b2b0a1185ae42
[INFO] running `Command { std: "docker" "start" "-a" "406497376e1a75a70a46e43fba738d0c962a0afe58c692af7f9b2b0a1185ae42", kill_on_drop: false }`
[INFO] [stderr]     Checking commands v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `execute` is never used
[INFO] [stdout]  --> src/main.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | trait Command {
[INFO] [stdout]   |       ------- method in this trait
[INFO] [stdout] 8 |     fn execute(&self) -> Result<(), &str>;
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `args` is never read
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct PingCmd {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 24 |     args: Option<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Cmd` is never used
[INFO] [stdout]   --> src/main.rs:38:6
[INFO] [stdout]    |
[INFO] [stdout] 38 | enum Cmd {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Command2` is never constructed
[INFO] [stdout]   --> src/main.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | struct Command2 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `one_by` are never used
[INFO] [stdout]   --> src/main.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Command2 {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 46 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn one_by(&self, a_cmd_name: &str, args: Option<String>) -> Box<dyn Command> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `raw_commands` and `null_cmd` are never read
[INFO] [stdout]   --> src/main.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | struct Commands {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 61 |     raw_commands: HashMap<String, Box<dyn Command>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 62 |     null_cmd: Box<dyn Command>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `one_by` are never used
[INFO] [stdout]   --> src/main.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | impl Commands {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 65 |     fn new(raw_commands: HashMap<String, Box<dyn Command>>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn one_by(&self, a_cmd_name: &str) -> &Box<dyn Command> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `args` is never read
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct PingCmd {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 24 |     args: Option<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "406497376e1a75a70a46e43fba738d0c962a0afe58c692af7f9b2b0a1185ae42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "406497376e1a75a70a46e43fba738d0c962a0afe58c692af7f9b2b0a1185ae42", kill_on_drop: false }`
[INFO] [stdout] 406497376e1a75a70a46e43fba738d0c962a0afe58c692af7f9b2b0a1185ae42