[INFO] cloning repository https://github.com/MucTepDayH16/leet-code [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MucTepDayH16/leet-code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMucTepDayH16%2Fleet-code", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMucTepDayH16%2Fleet-code'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 219df5a84c261149686f0c0ae49381671172d238 [INFO] checking MucTepDayH16/leet-code against try#723ab942d877517caf445dafde0416803ef56501 for pr-143857 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMucTepDayH16%2Fleet-code" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/MucTepDayH16/leet-code [INFO] finished tweaking git repo https://github.com/MucTepDayH16/leet-code [INFO] tweaked toml for git repo https://github.com/MucTepDayH16/leet-code written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/MucTepDayH16/leet-code on toolchain 723ab942d877517caf445dafde0416803ef56501 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+723ab942d877517caf445dafde0416803ef56501" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/MucTepDayH16/leet-code 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" "+723ab942d877517caf445dafde0416803ef56501" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+723ab942d877517caf445dafde0416803ef56501" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3ec9bd06c83a4f651a2ac5c047866b33783234cf9baf551c79394c6dfba98da3 [INFO] running `Command { std: "docker" "start" "-a" "3ec9bd06c83a4f651a2ac5c047866b33783234cf9baf551c79394c6dfba98da3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3ec9bd06c83a4f651a2ac5c047866b33783234cf9baf551c79394c6dfba98da3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3ec9bd06c83a4f651a2ac5c047866b33783234cf9baf551c79394c6dfba98da3", kill_on_drop: false }` [INFO] [stdout] 3ec9bd06c83a4f651a2ac5c047866b33783234cf9baf551c79394c6dfba98da3 [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" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+723ab942d877517caf445dafde0416803ef56501" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1496b03fdeba0448681d714cb6ca571e5c3437dac9a7d57d964c00f2f47a5758 [INFO] running `Command { std: "docker" "start" "-a" "1496b03fdeba0448681d714cb6ca571e5c3437dac9a7d57d964c00f2f47a5758", kill_on_drop: false }` [INFO] [stderr] Checking regular-expression-matching v0.1.0 (/opt/rustwide/workdir/regular-expression-matching) [INFO] [stderr] Checking group-anagrams v0.1.0 (/opt/rustwide/workdir/group-anagrams) [INFO] [stdout] warning: unused imports: `BTreeSet` and `cmp::*` [INFO] [stdout] --> group-anagrams/src/main.rs:2:33 [INFO] [stdout] | [INFO] [stdout] 2 | collections::{BTreeMap, BTreeSet}, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 3 | cmp::*, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BTreeSet` and `cmp::*` [INFO] [stdout] --> group-anagrams/src/main.rs:2:33 [INFO] [stdout] | [INFO] [stdout] 2 | collections::{BTreeMap, BTreeSet}, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 3 | cmp::*, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021 [INFO] [stdout] --> group-anagrams/src/main.rs:33:21 [INFO] [stdout] | [INFO] [stdout] 33 | let strs = strs.into_iter().map(|s| s.to_string()).collect(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(array_into_iter)]` on by default [INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 33 - let strs = strs.into_iter().map(|s| s.to_string()).collect(); [INFO] [stdout] 33 + let strs = strs.iter().map(|s| s.to_string()).collect(); [INFO] [stdout] | [INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stdout] | [INFO] [stdout] 33 - let strs = strs.into_iter().map(|s| s.to_string()).collect(); [INFO] [stdout] 33 + let strs = IntoIterator::into_iter(strs).map(|s| s.to_string()).collect(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021 [INFO] [stdout] --> group-anagrams/src/main.rs:33:21 [INFO] [stdout] | [INFO] [stdout] 33 | let strs = strs.into_iter().map(|s| s.to_string()).collect(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(array_into_iter)]` on by default [INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 33 - let strs = strs.into_iter().map(|s| s.to_string()).collect(); [INFO] [stdout] 33 + let strs = strs.iter().map(|s| s.to_string()).collect(); [INFO] [stdout] | [INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stdout] | [INFO] [stdout] 33 - let strs = strs.into_iter().map(|s| s.to_string()).collect(); [INFO] [stdout] 33 + let strs = IntoIterator::into_iter(strs).map(|s| s.to_string()).collect(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> regular-expression-matching/src/main.rs:116:32 [INFO] [stdout] | [INFO] [stdout] 116 | pub fn is_match(s: String, mut p: String) -> bool { [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] --> regular-expression-matching/src/main.rs:116:32 [INFO] [stdout] | [INFO] [stdout] 116 | pub fn is_match(s: String, mut p: String) -> bool { [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] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s [INFO] running `Command { std: "docker" "inspect" "1496b03fdeba0448681d714cb6ca571e5c3437dac9a7d57d964c00f2f47a5758", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1496b03fdeba0448681d714cb6ca571e5c3437dac9a7d57d964c00f2f47a5758", kill_on_drop: false }` [INFO] [stdout] 1496b03fdeba0448681d714cb6ca571e5c3437dac9a7d57d964c00f2f47a5758