[INFO] cloning repository https://github.com/MSBarbieri/leetcode [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MSBarbieri/leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMSBarbieri%2Fleetcode", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMSBarbieri%2Fleetcode'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e6b163c548fe94e2f5c5dd53ebf91b36de84acf0 [INFO] checking MSBarbieri/leetcode/e6b163c548fe94e2f5c5dd53ebf91b36de84acf0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMSBarbieri%2Fleetcode" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/MSBarbieri/leetcode on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/MSBarbieri/leetcode [INFO] finished tweaking git repo https://github.com/MSBarbieri/leetcode [INFO] tweaked toml for git repo https://github.com/MSBarbieri/leetcode written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/MSBarbieri/leetcode 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c89e2ace985017a7b8fd19e3ef6c5dd22eb0e2b12d186762b96de83671b1ec98 [INFO] running `Command { std: "docker" "start" "-a" "c89e2ace985017a7b8fd19e3ef6c5dd22eb0e2b12d186762b96de83671b1ec98", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c89e2ace985017a7b8fd19e3ef6c5dd22eb0e2b12d186762b96de83671b1ec98", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c89e2ace985017a7b8fd19e3ef6c5dd22eb0e2b12d186762b96de83671b1ec98", kill_on_drop: false }` [INFO] [stdout] c89e2ace985017a7b8fd19e3ef6c5dd22eb0e2b12d186762b96de83671b1ec98 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] afa9882291f40d5f96369ad56f94d46bd9b59999a6f2b4eaebf4deb972c3d895 [INFO] running `Command { std: "docker" "start" "-a" "afa9882291f40d5f96369ad56f94d46bd9b59999a6f2b4eaebf4deb972c3d895", kill_on_drop: false }` [INFO] [stderr] Checking leetcode v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/226.rs:58:24 [INFO] [stdout] | [INFO] [stdout] 58 | pub fn invert_tree(mut root: Option>>) -> Option>> { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/226.rs:59:21 [INFO] [stdout] | [INFO] [stdout] 59 | if let Some(mut node) = root { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `coins` [INFO] [stdout] --> src/322.rs:44:24 [INFO] [stdout] | [INFO] [stdout] 44 | pub fn coin_change(coins: Vec, amount: i32) -> i32 { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_coins` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `amount` [INFO] [stdout] --> src/322.rs:44:41 [INFO] [stdout] | [INFO] [stdout] 44 | pub fn coin_change(coins: Vec, amount: i32) -> i32 { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_amount` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/424.rs:37:44 [INFO] [stdout] | [INFO] [stdout] 37 | pub fn check(s: &[char], c_pos: usize, mut k: i32) -> usize { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/226.rs:58:24 [INFO] [stdout] | [INFO] [stdout] 58 | pub fn invert_tree(mut root: Option>>) -> Option>> { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/226.rs:59:21 [INFO] [stdout] | [INFO] [stdout] 59 | if let Some(mut node) = root { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `coins` [INFO] [stdout] --> src/322.rs:44:24 [INFO] [stdout] | [INFO] [stdout] 44 | pub fn coin_change(coins: Vec, amount: i32) -> i32 { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_coins` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `amount` [INFO] [stdout] --> src/322.rs:44:41 [INFO] [stdout] | [INFO] [stdout] 44 | pub fn coin_change(coins: Vec, amount: i32) -> i32 { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_amount` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/424.rs:37:44 [INFO] [stdout] | [INFO] [stdout] 37 | pub fn check(s: &[char], c_pos: usize, mut k: i32) -> usize { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s [INFO] running `Command { std: "docker" "inspect" "afa9882291f40d5f96369ad56f94d46bd9b59999a6f2b4eaebf4deb972c3d895", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "afa9882291f40d5f96369ad56f94d46bd9b59999a6f2b4eaebf4deb972c3d895", kill_on_drop: false }` [INFO] [stdout] afa9882291f40d5f96369ad56f94d46bd9b59999a6f2b4eaebf4deb972c3d895