[INFO] cloning repository https://github.com/nnethercott/design_patterns
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nnethercott/design_patterns" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnnethercott%2Fdesign_patterns", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnnethercott%2Fdesign_patterns'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a26017dc1edbf6ef3e40540509434e81bf5c74f
[INFO] checking nnethercott/design_patterns against master#cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9 for pr-136968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnnethercott%2Fdesign_patterns" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nnethercott/design_patterns on toolchain cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nnethercott/design_patterns
[INFO] finished tweaking git repo https://github.com/nnethercott/design_patterns
[INFO] tweaked toml for git repo https://github.com/nnethercott/design_patterns written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nnethercott/design_patterns 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" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6af1bf5cae839b3483d75cc3f1c2a8bc217997d6711ae56db14cd4a10d859262
[INFO] running `Command { std: "docker" "start" "-a" "6af1bf5cae839b3483d75cc3f1c2a8bc217997d6711ae56db14cd4a10d859262", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6af1bf5cae839b3483d75cc3f1c2a8bc217997d6711ae56db14cd4a10d859262", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6af1bf5cae839b3483d75cc3f1c2a8bc217997d6711ae56db14cd4a10d859262", kill_on_drop: false }`
[INFO] [stdout] 6af1bf5cae839b3483d75cc3f1c2a8bc217997d6711ae56db14cd4a10d859262
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f11416ee1a46be988bfbce21b2a6cd2f17602225ddfad4870e9202479eb6d3ea
[INFO] running `Command { std: "docker" "start" "-a" "f11416ee1a46be988bfbce21b2a6cd2f17602225ddfad4870e9202479eb6d3ea", kill_on_drop: false }`
[INFO] [stderr]     Checking design_patterns v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/composite.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn add(&mut self, child: Box<dyn Component>){
[INFO] [stdout]    |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/composite.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn add(&mut self, child: Box<dyn Component>){
[INFO] [stdout]    |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `composite::Component` is more private than the item `Composite::add`
[INFO] [stdout]   --> src/composite.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn add(&mut self, child: Box<dyn Component>){
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `Composite::add` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but trait `composite::Component` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/composite.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  | trait Component{
[INFO] [stdout]    | ^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `execute` and `add` are never used
[INFO] [stdout]   --> src/composite.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | trait Component{
[INFO] [stdout]    |       --------- methods in this trait
[INFO] [stdout] 9  |     fn execute(&self) -> usize;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 10 |     fn add(&mut self, child: Box<dyn Component>){
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/strategy.rs:94:13
[INFO] [stdout]    |
[INFO] [stdout] 94 |         let b = AlgoB;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `composite::Component` is more private than the item `composite::Composite::add`
[INFO] [stdout]   --> src/composite.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn add(&mut self, child: Box<dyn Component>){
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `composite::Composite::add` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but trait `composite::Component` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/composite.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  | trait Component{
[INFO] [stdout]    | ^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add` is never used
[INFO] [stdout]   --> src/composite.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | trait Component{
[INFO] [stdout]    |       --------- method in this trait
[INFO] [stdout] 9  |     fn execute(&self) -> usize;
[INFO] [stdout] 10 |     fn add(&mut self, child: Box<dyn Component>){
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "f11416ee1a46be988bfbce21b2a6cd2f17602225ddfad4870e9202479eb6d3ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f11416ee1a46be988bfbce21b2a6cd2f17602225ddfad4870e9202479eb6d3ea", kill_on_drop: false }`
[INFO] [stdout] f11416ee1a46be988bfbce21b2a6cd2f17602225ddfad4870e9202479eb6d3ea