[INFO] cloning repository https://github.com/Raibows/MLinRust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Raibows/MLinRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaibows%2FMLinRust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaibows%2FMLinRust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b46f0e240a38fb62e4947c627f3c48945131ae82 [INFO] checking Raibows/MLinRust/b46f0e240a38fb62e4947c627f3c48945131ae82 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaibows%2FMLinRust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Raibows/MLinRust on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Raibows/MLinRust [INFO] finished tweaking git repo https://github.com/Raibows/MLinRust [INFO] tweaked toml for git repo https://github.com/Raibows/MLinRust written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/Raibows/MLinRust 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 35af25d5b1038007a215b875d159b8fb74c0e36afe05071798baed0fea9dd1f6 [INFO] running `Command { std: "docker" "start" "-a" "35af25d5b1038007a215b875d159b8fb74c0e36afe05071798baed0fea9dd1f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "35af25d5b1038007a215b875d159b8fb74c0e36afe05071798baed0fea9dd1f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "35af25d5b1038007a215b875d159b8fb74c0e36afe05071798baed0fea9dd1f6", kill_on_drop: false }` [INFO] [stdout] 35af25d5b1038007a215b875d159b8fb74c0e36afe05071798baed0fea9dd1f6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 668022090ecb290f8ee56ba34866d594579eacb4eb9a4e6abe628fe35df8abb8 [INFO] running `Command { std: "docker" "start" "-a" "668022090ecb290f8ee56ba34866d594579eacb4eb9a4e6abe628fe35df8abb8", kill_on_drop: false }` [INFO] [stderr] Checking mlinrust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/model/decision_tree.rs:97:51 [INFO] [stdout] | [INFO] [stdout] 97 | let mut node = self.root.as_ref().unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `Box>` does not implement `Clone`, so calling `clone` on `&Box>` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 97 - let mut node = self.root.as_ref().unwrap().clone(); [INFO] [stdout] 97 + let mut node = self.root.as_ref().unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/model/decision_tree.rs:101:52 [INFO] [stdout] | [INFO] [stdout] 101 | node = &node.left.as_ref().unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `Box>` does not implement `Clone`, so calling `clone` on `&Box>` copies the reference, which does not do anything and can be removed [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 101 - node = &node.left.as_ref().unwrap().clone(); [INFO] [stdout] 101 + node = &node.left.as_ref().unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/model/decision_tree.rs:103:53 [INFO] [stdout] | [INFO] [stdout] 103 | node = &node.right.as_ref().unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `Box>` does not implement `Clone`, so calling `clone` on `&Box>` copies the reference, which does not do anything and can be removed [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 103 - node = &node.right.as_ref().unwrap().clone(); [INFO] [stdout] 103 + node = &node.right.as_ref().unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/model/decision_tree.rs:97:51 [INFO] [stdout] | [INFO] [stdout] 97 | let mut node = self.root.as_ref().unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `Box>` does not implement `Clone`, so calling `clone` on `&Box>` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 97 - let mut node = self.root.as_ref().unwrap().clone(); [INFO] [stdout] 97 + let mut node = self.root.as_ref().unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/model/decision_tree.rs:101:52 [INFO] [stdout] | [INFO] [stdout] 101 | node = &node.left.as_ref().unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `Box>` does not implement `Clone`, so calling `clone` on `&Box>` copies the reference, which does not do anything and can be removed [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 101 - node = &node.left.as_ref().unwrap().clone(); [INFO] [stdout] 101 + node = &node.left.as_ref().unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/model/decision_tree.rs:103:53 [INFO] [stdout] | [INFO] [stdout] 103 | node = &node.right.as_ref().unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `Box>` does not implement `Clone`, so calling `clone` on `&Box>` copies the reference, which does not do anything and can be removed [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 103 - node = &node.right.as_ref().unwrap().clone(); [INFO] [stdout] 103 + node = &node.right.as_ref().unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.83s [INFO] running `Command { std: "docker" "inspect" "668022090ecb290f8ee56ba34866d594579eacb4eb9a4e6abe628fe35df8abb8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "668022090ecb290f8ee56ba34866d594579eacb4eb9a4e6abe628fe35df8abb8", kill_on_drop: false }` [INFO] [stdout] 668022090ecb290f8ee56ba34866d594579eacb4eb9a4e6abe628fe35df8abb8