[INFO] cloning repository https://github.com/JoramirJr/fem-algos [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JoramirJr/fem-algos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoramirJr%2Ffem-algos", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoramirJr%2Ffem-algos'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 70430351a59a1dcde87669a8c7576bd66a7e7d99 [INFO] building JoramirJr/fem-algos against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoramirJr%2Ffem-algos" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/JoramirJr/fem-algos on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/JoramirJr/fem-algos [INFO] finished tweaking git repo https://github.com/JoramirJr/fem-algos [INFO] tweaked toml for git repo https://github.com/JoramirJr/fem-algos written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/JoramirJr/fem-algos 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0a0ec8a814df7b35cf8ff3e679a12be338ac47af1f7851a076c063139eb702c3 [INFO] running `Command { std: "docker" "start" "-a" "0a0ec8a814df7b35cf8ff3e679a12be338ac47af1f7851a076c063139eb702c3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0a0ec8a814df7b35cf8ff3e679a12be338ac47af1f7851a076c063139eb702c3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0a0ec8a814df7b35cf8ff3e679a12be338ac47af1f7851a076c063139eb702c3", kill_on_drop: false }` [INFO] [stdout] 0a0ec8a814df7b35cf8ff3e679a12be338ac47af1f7851a076c063139eb702c3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0e3579df0402421c52b4149f9389fcefbbd81eb667e597473fd7dfe96c7dcf4d [INFO] running `Command { std: "docker" "start" "-a" "0e3579df0402421c52b4149f9389fcefbbd81eb667e597473fd7dfe96c7dcf4d", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.17 [INFO] [stderr] Compiling num-integer v0.1.45 [INFO] [stderr] Compiling libc v0.2.151 [INFO] [stderr] Compiling num-bigint v0.4.4 [INFO] [stderr] Compiling num-iter v0.1.43 [INFO] [stderr] Compiling num-rational v0.4.1 [INFO] [stderr] Compiling getrandom v0.2.11 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling num-complex v0.4.4 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling num v0.4.1 [INFO] [stderr] Compiling fem-algos-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable `tail` is assigned to, but never used [INFO] [stdout] --> src/algos/queue.rs:25:22 [INFO] [stdout] | [INFO] [stdout] 25 | Some(mut tail) => { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_tail` instead [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `tail` is never read [INFO] [stdout] --> src/algos/queue.rs:28:17 [INFO] [stdout] | [INFO] [stdout] 28 | tail = &mut Box::new(new_node); [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `bubble_sort` is never used [INFO] [stdout] --> src/algos/bubble_sort.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn bubble_sort(mut container: [usize; 7], mut idx: usize) -> [usize; 7] { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `crystal_balls_search` is never used [INFO] [stdout] --> src/algos/crystal_balls_search.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | pub fn crystal_balls_search(container: &Vec) -> Option { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `linear_search` is never used [INFO] [stdout] --> src/algos/linear_search.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn linear_search(container: [i32; 20], search: i32) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Node` is never constructed [INFO] [stdout] --> src/algos/queue.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | struct Node { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `List` is never constructed [INFO] [stdout] --> src/algos/queue.rs:9:8 [INFO] [stdout] | [INFO] [stdout] 9 | struct List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `peek`, `enqueue`, and `deque` are never used [INFO] [stdout] --> src/algos/queue.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 14 | impl List { [INFO] [stdout] | ---------------- methods in this implementation [INFO] [stdout] 15 | //the ideal scenario is a reference return [INFO] [stdout] 16 | fn peek(self) -> usize { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 19 | fn enqueue(&mut self, value: usize) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 39 | fn deque(&mut self) -> Option { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.13s [INFO] running `Command { std: "docker" "inspect" "0e3579df0402421c52b4149f9389fcefbbd81eb667e597473fd7dfe96c7dcf4d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0e3579df0402421c52b4149f9389fcefbbd81eb667e597473fd7dfe96c7dcf4d", kill_on_drop: false }` [INFO] [stdout] 0e3579df0402421c52b4149f9389fcefbbd81eb667e597473fd7dfe96c7dcf4d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d4ca814bcd1558dcb93b79cef185315a6c7d81dc5a5e81e88bf15d52463939a7 [INFO] running `Command { std: "docker" "start" "-a" "d4ca814bcd1558dcb93b79cef185315a6c7d81dc5a5e81e88bf15d52463939a7", kill_on_drop: false }` [INFO] [stderr] Compiling fem-algos-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable `tail` is assigned to, but never used [INFO] [stdout] --> src/algos/queue.rs:25:22 [INFO] [stdout] | [INFO] [stdout] 25 | Some(mut tail) => { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_tail` instead [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `tail` is never read [INFO] [stdout] --> src/algos/queue.rs:28:17 [INFO] [stdout] | [INFO] [stdout] 28 | tail = &mut Box::new(new_node); [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `linear_search` is never used [INFO] [stdout] --> src/algos/linear_search.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn linear_search(container: [i32; 20], search: i32) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `peek` is never used [INFO] [stdout] --> src/algos/queue.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 14 | impl List { [INFO] [stdout] | ---------------- method in this implementation [INFO] [stdout] 15 | //the ideal scenario is a reference return [INFO] [stdout] 16 | fn peek(self) -> usize { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s [INFO] running `Command { std: "docker" "inspect" "d4ca814bcd1558dcb93b79cef185315a6c7d81dc5a5e81e88bf15d52463939a7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d4ca814bcd1558dcb93b79cef185315a6c7d81dc5a5e81e88bf15d52463939a7", kill_on_drop: false }` [INFO] [stdout] d4ca814bcd1558dcb93b79cef185315a6c7d81dc5a5e81e88bf15d52463939a7