[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#be699666730c5a1745838222e98e2d85019affdc for pr-134300 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMucTepDayH16%2Fleet-code" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/MucTepDayH16/leet-code on toolchain be699666730c5a1745838222e98e2d85019affdc [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+be699666730c5a1745838222e98e2d85019affdc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [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-1-tc2/source/Cargo.toml [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" "+be699666730c5a1745838222e98e2d85019affdc" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+be699666730c5a1745838222e98e2d85019affdc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 41f32d1f2a7d335cebc99ed20ad4f81520633d0061c1a90cfe2ab9f1591ede3d [INFO] running `Command { std: "docker" "start" "-a" "41f32d1f2a7d335cebc99ed20ad4f81520633d0061c1a90cfe2ab9f1591ede3d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "41f32d1f2a7d335cebc99ed20ad4f81520633d0061c1a90cfe2ab9f1591ede3d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "41f32d1f2a7d335cebc99ed20ad4f81520633d0061c1a90cfe2ab9f1591ede3d", kill_on_drop: false }` [INFO] [stdout] 41f32d1f2a7d335cebc99ed20ad4f81520633d0061c1a90cfe2ab9f1591ede3d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+be699666730c5a1745838222e98e2d85019affdc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5934246d99832bf08923c1869a3a5886883eb2bd0302768e375649a27a5571a8 [INFO] running `Command { std: "docker" "start" "-a" "5934246d99832bf08923c1869a3a5886883eb2bd0302768e375649a27a5571a8", kill_on_drop: false }` [INFO] [stderr] Checking group-anagrams v0.1.0 (/opt/rustwide/workdir/group-anagrams) [INFO] [stderr] Checking regular-expression-matching v0.1.0 (/opt/rustwide/workdir/regular-expression-matching) [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.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 = 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.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 = 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" "5934246d99832bf08923c1869a3a5886883eb2bd0302768e375649a27a5571a8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5934246d99832bf08923c1869a3a5886883eb2bd0302768e375649a27a5571a8", kill_on_drop: false }` [INFO] [stdout] 5934246d99832bf08923c1869a3a5886883eb2bd0302768e375649a27a5571a8