[INFO] cloning repository https://github.com/VladYermakov/interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VladYermakov/interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVladYermakov%2Finterpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVladYermakov%2Finterpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7269d722e714f053041e0db8e28d22865cc09fb9
[INFO] checking VladYermakov/interpreter against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVladYermakov%2Finterpreter" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VladYermakov/interpreter on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VladYermakov/interpreter
[INFO] finished tweaking git repo https://github.com/VladYermakov/interpreter
[INFO] tweaked toml for git repo https://github.com/VladYermakov/interpreter written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/VladYermakov/interpreter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9aa714d0aff3d637f6463617682cc51d9c5bc88de535908ea355fdae90dd6b0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c9aa714d0aff3d637f6463617682cc51d9c5bc88de535908ea355fdae90dd6b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9aa714d0aff3d637f6463617682cc51d9c5bc88de535908ea355fdae90dd6b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9aa714d0aff3d637f6463617682cc51d9c5bc88de535908ea355fdae90dd6b0", kill_on_drop: false }`
[INFO] [stdout] c9aa714d0aff3d637f6463617682cc51d9c5bc88de535908ea355fdae90dd6b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d21963f56c4d0498935ed7f28e6bcce08371d0536437e5f3129bd6ade025f28
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5d21963f56c4d0498935ed7f28e6bcce08371d0536437e5f3129bd6ade025f28", kill_on_drop: false }`
[INFO] [stderr]     Checking interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `node_type`
[INFO] [stdout]    --> src/main.rs:476:8
[INFO] [stdout]     |
[INFO] [stdout] 476 |     fn node_type(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_text`
[INFO] [stdout]    --> src/main.rs:641:8
[INFO] [stdout]     |
[INFO] [stdout] 641 |     fn with_text<T: Into<String> + Clone>(text: T) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_text`
[INFO] [stdout]     --> src/main.rs:1074:8
[INFO] [stdout]      |
[INFO] [stdout] 1074 |     fn with_text<T: Into<String> + Clone>(text: T) -> Self {
[INFO] [stdout]      |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `inv`
[INFO] [stdout]   --> src/numbers/complex.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn inv(&self) -> Complex {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `node_type`
[INFO] [stdout]    --> src/main.rs:476:8
[INFO] [stdout]     |
[INFO] [stdout] 476 |     fn node_type(&self) -> 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 [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `Command { std: "docker" "inspect" "5d21963f56c4d0498935ed7f28e6bcce08371d0536437e5f3129bd6ade025f28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d21963f56c4d0498935ed7f28e6bcce08371d0536437e5f3129bd6ade025f28", kill_on_drop: false }`
[INFO] [stdout] 5d21963f56c4d0498935ed7f28e6bcce08371d0536437e5f3129bd6ade025f28