[INFO] cloning repository https://github.com/tamilvendhank/design_patterns_using_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tamilvendhank/design_patterns_using_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftamilvendhank%2Fdesign_patterns_using_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftamilvendhank%2Fdesign_patterns_using_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b5dd5f8bc83ca7b9e43eec75439dcde584ee90af
[INFO] checking tamilvendhank/design_patterns_using_rust against master#64b185eddaa1d7ddf5e0c024be23b9cbba6c1722 for pr-143929
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftamilvendhank%2Fdesign_patterns_using_rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tamilvendhank/design_patterns_using_rust
[INFO] finished tweaking git repo https://github.com/tamilvendhank/design_patterns_using_rust
[INFO] tweaked toml for git repo https://github.com/tamilvendhank/design_patterns_using_rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tamilvendhank/design_patterns_using_rust on toolchain 64b185eddaa1d7ddf5e0c024be23b9cbba6c1722
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tamilvendhank/design_patterns_using_rust 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" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92c0cdce58f3a8e6318f9444eea254f174510a6f5489438f2491bb451c5fa7ff
[INFO] running `Command { std: "docker" "start" "-a" "92c0cdce58f3a8e6318f9444eea254f174510a6f5489438f2491bb451c5fa7ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92c0cdce58f3a8e6318f9444eea254f174510a6f5489438f2491bb451c5fa7ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92c0cdce58f3a8e6318f9444eea254f174510a6f5489438f2491bb451c5fa7ff", kill_on_drop: false }`
[INFO] [stdout] 92c0cdce58f3a8e6318f9444eea254f174510a6f5489438f2491bb451c5fa7ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4dcc7390e6c89336999b264e991d22adc4c8ddf4f8dcf664a8f53e219431f1e
[INFO] running `Command { std: "docker" "start" "-a" "e4dcc7390e6c89336999b264e991d22adc4c8ddf4f8dcf664a8f53e219431f1e", kill_on_drop: false }`
[INFO] [stderr]     Checking design_patterns_using_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `FlyNoWay` is never constructed
[INFO] [stdout]   --> src/strategy_pattern.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct FlyNoWay;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MuteQuack` is never constructed
[INFO] [stdout]   --> src/strategy_pattern.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct MuteQuack;
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Squeak` is never constructed
[INFO] [stdout]   --> src/strategy_pattern.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Squeak;
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `perform_fly`, `perform_quack`, `swim`, and `set_quack_behaviour` are never used
[INFO] [stdout]   --> src/strategy_pattern.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Duck {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] 22 |     pub fn perform_fly(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn perform_quack(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn swim(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn set_quack_behaviour(&mut self, quack_behaviour: Box<dyn QuackBehaviour>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FlyNoWay` is never constructed
[INFO] [stdout]   --> src/strategy_pattern.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct FlyNoWay;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MuteQuack` is never constructed
[INFO] [stdout]   --> src/strategy_pattern.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct MuteQuack;
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Squeak` is never constructed
[INFO] [stdout]   --> src/strategy_pattern.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Squeak;
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `perform_fly`, `perform_quack`, `swim`, and `set_quack_behaviour` are never used
[INFO] [stdout]   --> src/strategy_pattern.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Duck {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] 22 |     pub fn perform_fly(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn perform_quack(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn swim(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn set_quack_behaviour(&mut self, quack_behaviour: Box<dyn QuackBehaviour>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "e4dcc7390e6c89336999b264e991d22adc4c8ddf4f8dcf664a8f53e219431f1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4dcc7390e6c89336999b264e991d22adc4c8ddf4f8dcf664a8f53e219431f1e", kill_on_drop: false }`
[INFO] [stdout] e4dcc7390e6c89336999b264e991d22adc4c8ddf4f8dcf664a8f53e219431f1e