[INFO] cloning repository https://github.com/Ahmed-Ansari02/Rust_binary_tree [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ahmed-Ansari02/Rust_binary_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhmed-Ansari02%2FRust_binary_tree", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhmed-Ansari02%2FRust_binary_tree'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8324b1cc0b45b504cc7546c1c08007ae9c1bd3e0 [INFO] checking Ahmed-Ansari02/Rust_binary_tree against try#5ec4d3b0c83717313176eefa7d71e9d36dc83355 for pr-155501 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhmed-Ansari02%2FRust_binary_tree" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Ahmed-Ansari02/Rust_binary_tree [INFO] finished tweaking git repo https://github.com/Ahmed-Ansari02/Rust_binary_tree [INFO] tweaked toml for git repo https://github.com/Ahmed-Ansari02/Rust_binary_tree written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Ahmed-Ansari02/Rust_binary_tree on toolchain 5ec4d3b0c83717313176eefa7d71e9d36dc83355 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Ahmed-Ansari02/Rust_binary_tree 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" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3bc5854dfcd7f232518c5b102138570140548abc5a6a0585a36b9fbb373854c7 [INFO] running `Command { std: "docker" "start" "-a" "3bc5854dfcd7f232518c5b102138570140548abc5a6a0585a36b9fbb373854c7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3bc5854dfcd7f232518c5b102138570140548abc5a6a0585a36b9fbb373854c7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3bc5854dfcd7f232518c5b102138570140548abc5a6a0585a36b9fbb373854c7", kill_on_drop: false }` [INFO] [stdout] 3bc5854dfcd7f232518c5b102138570140548abc5a6a0585a36b9fbb373854c7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fae98f52e41e95141be2bc04fb1ccb9e4f5b8fc082bb58b299761f736dd28972 [INFO] running `Command { std: "docker" "start" "-a" "fae98f52e41e95141be2bc04fb1ccb9e4f5b8fc082bb58b299761f736dd28972", kill_on_drop: false }` [INFO] [stderr] Checking binary_tree v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let mut curr_node = self; [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let mut curr_node = self; [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get` is never used [INFO] [stdout] --> src/main.rs:34:8 [INFO] [stdout] | [INFO] [stdout] 9 | impl Node { [INFO] [stdout] | ------------------------------------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 34 | fn get(&self, data: T) -> Option { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get` is never used [INFO] [stdout] --> src/main.rs:34:8 [INFO] [stdout] | [INFO] [stdout] 9 | impl Node { [INFO] [stdout] | ------------------------------------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 34 | fn get(&self, data: T) -> Option { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s [INFO] running `Command { std: "docker" "inspect" "fae98f52e41e95141be2bc04fb1ccb9e4f5b8fc082bb58b299761f736dd28972", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fae98f52e41e95141be2bc04fb1ccb9e4f5b8fc082bb58b299761f736dd28972", kill_on_drop: false }` [INFO] [stdout] fae98f52e41e95141be2bc04fb1ccb9e4f5b8fc082bb58b299761f736dd28972