[INFO] cloning repository https://github.com/Atul-0515/DSA [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Atul-0515/DSA" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAtul-0515%2FDSA", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAtul-0515%2FDSA'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] bfc1e2871add2b4136bbcac38aba08a264180dd1 [INFO] checking Atul-0515/DSA/bfc1e2871add2b4136bbcac38aba08a264180dd1 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAtul-0515%2FDSA" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Atul-0515/DSA on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Atul-0515/DSA [INFO] finished tweaking git repo https://github.com/Atul-0515/DSA [INFO] tweaked toml for git repo https://github.com/Atul-0515/DSA written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Atul-0515/DSA 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7c05a3f06dba0dc52ee12cb329e48ca4b0bb1ad123bb64ff54213ff4a3e46d30 [INFO] running `Command { std: "docker" "start" "-a" "7c05a3f06dba0dc52ee12cb329e48ca4b0bb1ad123bb64ff54213ff4a3e46d30", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7c05a3f06dba0dc52ee12cb329e48ca4b0bb1ad123bb64ff54213ff4a3e46d30", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7c05a3f06dba0dc52ee12cb329e48ca4b0bb1ad123bb64ff54213ff4a3e46d30", kill_on_drop: false }` [INFO] [stdout] 7c05a3f06dba0dc52ee12cb329e48ca4b0bb1ad123bb64ff54213ff4a3e46d30 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 470eb438f953d320c01d552eb734a5fc6cb7849176d22dcd2c8df523528c6e8e [INFO] running `Command { std: "docker" "start" "-a" "470eb438f953d320c01d552eb734a5fc6cb7849176d22dcd2c8df523528c6e8e", kill_on_drop: false }` [INFO] [stderr] Checking dsa v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: type alias `Link` is never used [INFO] [stdout] --> src/linked_list.rs:4:6 [INFO] [stdout] | [INFO] [stdout] 4 | type Link = Option>>; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Node` is never constructed [INFO] [stdout] --> src/linked_list.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | struct Node { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/linked_list.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 10 | impl Node { [INFO] [stdout] | --------------- associated function in this implementation [INFO] [stdout] 11 | fn new(elm: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `LinkedList` is never constructed [INFO] [stdout] --> src/linked_list.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | struct LinkedList { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `push_front`, `pop_front`, `peek`, `peek_mut`, and `is_empty` are never used [INFO] [stdout] --> src/linked_list.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 19 | impl LinkedList { [INFO] [stdout] | --------------------- associated items in this implementation [INFO] [stdout] 20 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 24 | fn push_front(&mut self, elm: T) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 32 | fn pop_front(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 39 | fn peek(&self) -> Option<&T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 43 | fn peek_mut(&mut self) -> Option<&mut T> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 47 | fn is_empty(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `IntoIter` is never constructed [INFO] [stdout] --> src/linked_list.rs:68:8 [INFO] [stdout] | [INFO] [stdout] 68 | struct IntoIter(LinkedList); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `into_iter` is never used [INFO] [stdout] --> src/linked_list.rs:70:8 [INFO] [stdout] | [INFO] [stdout] 69 | impl LinkedList { [INFO] [stdout] | --------------------- method in this implementation [INFO] [stdout] 70 | fn into_iter(self) -> IntoIter { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Iter` is never constructed [INFO] [stdout] --> src/linked_list.rs:81:8 [INFO] [stdout] | [INFO] [stdout] 81 | struct Iter<'a, T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `iter` is never used [INFO] [stdout] --> src/linked_list.rs:85:8 [INFO] [stdout] | [INFO] [stdout] 84 | impl LinkedList { [INFO] [stdout] | --------------------- method in this implementation [INFO] [stdout] 85 | fn iter(&self) -> Iter{ [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `IterMut` is never constructed [INFO] [stdout] --> src/linked_list.rs:99:8 [INFO] [stdout] | [INFO] [stdout] 99 | struct IterMut<'a, T> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `iter_mut` is never used [INFO] [stdout] --> src/linked_list.rs:103:8 [INFO] [stdout] | [INFO] [stdout] 102 | impl LinkedList { [INFO] [stdout] | --------------------- method in this implementation [INFO] [stdout] 103 | fn iter_mut(&mut self) -> IterMut { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type alias `Link` is never used [INFO] [stdout] --> src/persistent_list.rs:6:6 [INFO] [stdout] | [INFO] [stdout] 6 | type Link = Option>>; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Node` is never constructed [INFO] [stdout] --> src/persistent_list.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | struct Node { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/persistent_list.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 12 | impl Node { [INFO] [stdout] | --------------- associated function in this implementation [INFO] [stdout] 13 | fn new(elm: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `PersistentList` is never constructed [INFO] [stdout] --> src/persistent_list.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | struct PersistentList { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `prepend`, `tail`, `head`, `is_empty`, and `iter` are never used [INFO] [stdout] --> src/persistent_list.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 21 | impl PersistentList { [INFO] [stdout] | ------------------------- associated items in this implementation [INFO] [stdout] 22 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 25 | fn prepend(&self, elm: T) -> Self { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 33 | fn tail(&self) -> Self { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 37 | fn head(&self) -> Option<&T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 41 | fn is_empty(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 45 | fn iter(&self) -> Iter { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Iter` is never constructed [INFO] [stdout] --> src/persistent_list.rs:50:8 [INFO] [stdout] | [INFO] [stdout] 50 | struct Iter<'a, T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 17 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s [INFO] running `Command { std: "docker" "inspect" "470eb438f953d320c01d552eb734a5fc6cb7849176d22dcd2c8df523528c6e8e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "470eb438f953d320c01d552eb734a5fc6cb7849176d22dcd2c8df523528c6e8e", kill_on_drop: false }` [INFO] [stdout] 470eb438f953d320c01d552eb734a5fc6cb7849176d22dcd2c8df523528c6e8e