[INFO] cloning repository https://github.com/famibo/rust-ref-counting-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/famibo/rust-ref-counting-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffamibo%2Frust-ref-counting-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffamibo%2Frust-ref-counting-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 471131cee637a8ec3564250b6789e0efe956313a
[INFO] checking famibo/rust-ref-counting-test against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffamibo%2Frust-ref-counting-test" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/famibo/rust-ref-counting-test 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/famibo/rust-ref-counting-test
[INFO] finished tweaking git repo https://github.com/famibo/rust-ref-counting-test
[INFO] tweaked toml for git repo https://github.com/famibo/rust-ref-counting-test written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/famibo/rust-ref-counting-test 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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 70d48c937539f8e4ffa0d28d2d84ba1acb9e391358b36bed0053931a19fd9241
[INFO] running `Command { std: "docker" "start" "-a" "70d48c937539f8e4ffa0d28d2d84ba1acb9e391358b36bed0053931a19fd9241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70d48c937539f8e4ffa0d28d2d84ba1acb9e391358b36bed0053931a19fd9241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70d48c937539f8e4ffa0d28d2d84ba1acb9e391358b36bed0053931a19fd9241", kill_on_drop: false }`
[INFO] [stdout] 70d48c937539f8e4ffa0d28d2d84ba1acb9e391358b36bed0053931a19fd9241
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e664bf5b7150afdc5e4846445036ba4f49647e7f2f05647c8827151f6af37217
[INFO] running `Command { std: "docker" "start" "-a" "e664bf5b7150afdc5e4846445036ba4f49647e7f2f05647c8827151f6af37217", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking uuid v1.4.1
[INFO] [stderr]     Checking RefCountingTest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `set_deputy` is never used
[INFO] [stdout]   --> src/member.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Member {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn set_deputy(&self, deputy: Rc<Member>) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_id` and `remove_member_by_name` are never used
[INFO] [stdout]   --> src/team.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Team {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub fn get_id(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn remove_member_by_name(&self, name: &str) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "e664bf5b7150afdc5e4846445036ba4f49647e7f2f05647c8827151f6af37217", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e664bf5b7150afdc5e4846445036ba4f49647e7f2f05647c8827151f6af37217", kill_on_drop: false }`
[INFO] [stdout] e664bf5b7150afdc5e4846445036ba4f49647e7f2f05647c8827151f6af37217