[INFO] cloning repository https://github.com/layen-king/rust-learning [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/layen-king/rust-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flayen-king%2Frust-learning", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flayen-king%2Frust-learning'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c2ccb7b92621ea15027cc19bd70284f9c0b23630 [INFO] checking layen-king/rust-learning against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flayen-king%2Frust-learning" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/layen-king/rust-learning on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/layen-king/rust-learning [INFO] finished tweaking git repo https://github.com/layen-king/rust-learning [INFO] tweaked toml for git repo https://github.com/layen-king/rust-learning written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 104 packages [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding object v0.32.2 (latest: v0.34.0) [INFO] [stderr] Adding redox_syscall v0.4.1 (latest: v0.5.1) [INFO] [stderr] Adding uuid v0.8.2 (latest: v1.8.0) [INFO] [stderr] Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0) [INFO] [stderr] Adding windows-sys v0.48.0 (latest: v0.52.0) [INFO] [stderr] Adding windows-targets v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_i686_gnu v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_i686_msvc v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 31fc5468d79edc66961a8e62ac3e332403f489adbc1fc05dbf864151a5212f8a [INFO] running `Command { std: "docker" "start" "-a" "31fc5468d79edc66961a8e62ac3e332403f489adbc1fc05dbf864151a5212f8a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "31fc5468d79edc66961a8e62ac3e332403f489adbc1fc05dbf864151a5212f8a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "31fc5468d79edc66961a8e62ac3e332403f489adbc1fc05dbf864151a5212f8a", kill_on_drop: false }` [INFO] [stdout] 31fc5468d79edc66961a8e62ac3e332403f489adbc1fc05dbf864151a5212f8a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 461c9903d4996b3f150ab9acca0eb2b4e41f833bb74f10800cd627b8c0ba4854 [INFO] running `Command { std: "docker" "start" "-a" "461c9903d4996b3f150ab9acca0eb2b4e41f833bb74f10800cd627b8c0ba4854", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.2.0 [INFO] [stderr] Checking memchr v2.7.2 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Checking pin-project-lite v0.2.14 [INFO] [stderr] Compiling parking_lot_core v0.9.9 [INFO] [stderr] Checking regex-syntax v0.8.3 [INFO] [stderr] Compiling thiserror v1.0.58 [INFO] [stderr] Compiling anyhow v1.0.81 [INFO] [stderr] Checking scopeguard v1.2.0 [INFO] [stderr] Compiling serde_json v1.0.115 [INFO] [stderr] Checking smallvec v1.13.2 [INFO] [stderr] Checking itoa v1.0.11 [INFO] [stderr] Compiling proc-macro2 v1.0.79 [INFO] [stderr] Checking ryu v1.0.17 [INFO] [stderr] Checking getrandom v0.2.12 [INFO] [stderr] Checking signal-hook-registry v1.4.1 [INFO] [stderr] Checking socket2 v0.5.6 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking walkdir v2.5.0 [INFO] [stderr] Checking mio v0.8.11 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking uuid v0.8.2 [INFO] [stderr] Checking bytes v1.6.0 [INFO] [stderr] Checking rust_by_example v0.1.0 (/opt/rustwide/workdir/rust_by_example) [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> rust_by_example/src/from_into.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `MinMax` is never constructed [INFO] [stdout] --> rust_by_example/src/print_display.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | struct MinMax(i64,i64); [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `List` is never constructed [INFO] [stdout] --> rust_by_example/src/print_display.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | struct List(Vec); [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking bufstream v0.1.4 [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling num-bigint v0.4.4 [INFO] [stderr] Compiling lock_api v0.4.11 [INFO] [stderr] Compiling num-rational v0.4.1 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking aho-corasick v1.1.3 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking num-complex v0.4.5 [INFO] [stderr] Checking num-iter v0.1.44 [INFO] [stderr] Checking regex-automata v0.4.6 [INFO] [stderr] Checking num v0.4.1 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Compiling futures-macro v0.3.30 [INFO] [stderr] Compiling thiserror-impl v1.0.58 [INFO] [stderr] Compiling tokio-macros v2.2.0 [INFO] [stderr] Checking regex v1.10.4 [INFO] [stderr] Checking tokio v1.37.0 [INFO] [stderr] Checking leetcode v0.1.0 (/opt/rustwide/workdir/leetcode) [INFO] [stderr] Checking futures-util v0.3.30 [INFO] [stderr] Checking mime_types v0.1.0 (/opt/rustwide/workdir/mime_types) [INFO] [stderr] Checking futures-executor v0.3.30 [INFO] [stderr] Checking futures v0.3.30 [INFO] [stderr] Checking rust_course v0.1.0 (/opt/rustwide/workdir/void/rust_course) [INFO] [stdout] warning: trait `Stream` is never used [INFO] [stdout] --> void/rust_course/src/async_await.rs:88:7 [INFO] [stdout] | [INFO] [stdout] 88 | trait Stream { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Checking event_emiter v0.1.0 (/opt/rustwide/workdir/event_emiter) [INFO] [stdout] warning: the item `bincode` is imported redundantly [INFO] [stdout] --> event_emiter/src/event_emiter.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use bincode; [INFO] [stdout] | ^^^^^^^ the item `bincode` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking del-repeat v0.1.0 (/opt/rustwide/workdir/del-repeat) [INFO] [stdout] warning: the item `serde_json` is imported redundantly [INFO] [stdout] --> del-repeat/src/repeat.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use serde_json; [INFO] [stdout] | ^^^^^^^^^^ the item `serde_json` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rust-learn v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `mime_types` is imported redundantly [INFO] [stdout] --> src/utils.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use mime_types; [INFO] [stdout] | ^^^^^^^^^^ the item `mime_types` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `mime_types` is imported redundantly [INFO] [stdout] --> src/utils.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use mime_types; [INFO] [stdout] | ^^^^^^^^^^ the item `mime_types` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.71s [INFO] running `Command { std: "docker" "inspect" "461c9903d4996b3f150ab9acca0eb2b4e41f833bb74f10800cd627b8c0ba4854", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "461c9903d4996b3f150ab9acca0eb2b4e41f833bb74f10800cd627b8c0ba4854", kill_on_drop: false }` [INFO] [stdout] 461c9903d4996b3f150ab9acca0eb2b4e41f833bb74f10800cd627b8c0ba4854 [INFO] checking layen-king/rust-learning against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flayen-king%2Frust-learning" "/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/layen-king/rust-learning on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/layen-king/rust-learning [INFO] finished tweaking git repo https://github.com/layen-king/rust-learning [INFO] tweaked toml for git repo https://github.com/layen-king/rust-learning written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 104 packages [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding object v0.32.2 (latest: v0.34.0) [INFO] [stderr] Adding redox_syscall v0.4.1 (latest: v0.5.1) [INFO] [stderr] Adding uuid v0.8.2 (latest: v1.8.0) [INFO] [stderr] Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0) [INFO] [stderr] Adding windows-sys v0.48.0 (latest: v0.52.0) [INFO] [stderr] Adding windows-targets v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_i686_gnu v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_i686_msvc v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1866ebc0610c61c9b48ca869216ebdbfef56b4ad5cc9556939d71468f24c5432 [INFO] running `Command { std: "docker" "start" "-a" "1866ebc0610c61c9b48ca869216ebdbfef56b4ad5cc9556939d71468f24c5432", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1866ebc0610c61c9b48ca869216ebdbfef56b4ad5cc9556939d71468f24c5432", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1866ebc0610c61c9b48ca869216ebdbfef56b4ad5cc9556939d71468f24c5432", kill_on_drop: false }` [INFO] [stdout] 1866ebc0610c61c9b48ca869216ebdbfef56b4ad5cc9556939d71468f24c5432 [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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4eeaf07e4fe2659249285ba0bcbcde316af84bc4eec4dad811a4eed4631a6eec [INFO] running `Command { std: "docker" "start" "-a" "4eeaf07e4fe2659249285ba0bcbcde316af84bc4eec4dad811a4eed4631a6eec", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.2.0 [INFO] [stderr] Checking memchr v2.7.2 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Checking pin-project-lite v0.2.14 [INFO] [stderr] Compiling parking_lot_core v0.9.9 [INFO] [stderr] Compiling thiserror v1.0.58 [INFO] [stderr] Compiling anyhow v1.0.81 [INFO] [stderr] Checking scopeguard v1.2.0 [INFO] [stderr] Checking regex-syntax v0.8.3 [INFO] [stderr] Checking smallvec v1.13.2 [INFO] [stderr] Compiling serde_json v1.0.115 [INFO] [stderr] Checking itoa v1.0.11 [INFO] [stderr] Compiling proc-macro2 v1.0.79 [INFO] [stderr] Checking ryu v1.0.17 [INFO] [stderr] Checking getrandom v0.2.12 [INFO] [stderr] Checking signal-hook-registry v1.4.1 [INFO] [stderr] Checking socket2 v0.5.6 [INFO] [stderr] Checking mio v0.8.11 [INFO] [stderr] Checking walkdir v2.5.0 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking uuid v0.8.2 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking bytes v1.6.0 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rust_by_example v0.1.0 (/opt/rustwide/workdir/rust_by_example) [INFO] [stderr] Checking bufstream v0.1.4 [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> rust_by_example/src/from_into.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `MinMax` is never constructed [INFO] [stdout] --> rust_by_example/src/print_display.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | struct MinMax(i64,i64); [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `List` is never constructed [INFO] [stdout] --> rust_by_example/src/print_display.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | struct List(Vec); [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling num-bigint v0.4.4 [INFO] [stderr] Compiling lock_api v0.4.11 [INFO] [stderr] Compiling num-rational v0.4.1 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Checking aho-corasick v1.1.3 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking num-complex v0.4.5 [INFO] [stderr] Checking regex-automata v0.4.6 [INFO] [stderr] Checking num-iter v0.1.44 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Compiling futures-macro v0.3.30 [INFO] [stderr] Compiling thiserror-impl v1.0.58 [INFO] [stderr] Compiling tokio-macros v2.2.0 [INFO] [stderr] Checking regex v1.10.4 [INFO] [stderr] Checking num v0.4.1 [INFO] [stderr] Checking tokio v1.37.0 [INFO] [stderr] Checking leetcode v0.1.0 (/opt/rustwide/workdir/leetcode) [INFO] [stderr] Checking futures-util v0.3.30 [INFO] [stderr] Checking mime_types v0.1.0 (/opt/rustwide/workdir/mime_types) [INFO] [stderr] Checking futures-executor v0.3.30 [INFO] [stderr] Checking futures v0.3.30 [INFO] [stderr] Checking rust_course v0.1.0 (/opt/rustwide/workdir/void/rust_course) [INFO] [stdout] warning: trait `Stream` is never used [INFO] [stdout] --> void/rust_course/src/async_await.rs:88:7 [INFO] [stdout] | [INFO] [stdout] 88 | trait Stream { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Checking event_emiter v0.1.0 (/opt/rustwide/workdir/event_emiter) [INFO] [stdout] warning: the item `bincode` is imported redundantly [INFO] [stdout] --> event_emiter/src/event_emiter.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use bincode; [INFO] [stdout] | ^^^^^^^ the item `bincode` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking del-repeat v0.1.0 (/opt/rustwide/workdir/del-repeat) [INFO] [stdout] warning: the item `serde_json` is imported redundantly [INFO] [stdout] --> del-repeat/src/repeat.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use serde_json; [INFO] [stdout] | ^^^^^^^^^^ the item `serde_json` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rust-learn v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `mime_types` is imported redundantly [INFO] [stdout] --> src/utils.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use mime_types; [INFO] [stdout] | ^^^^^^^^^^ the item `mime_types` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `mime_types` is imported redundantly [INFO] [stdout] --> src/utils.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use mime_types; [INFO] [stdout] | ^^^^^^^^^^ the item `mime_types` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.38s [INFO] running `Command { std: "docker" "inspect" "4eeaf07e4fe2659249285ba0bcbcde316af84bc4eec4dad811a4eed4631a6eec", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4eeaf07e4fe2659249285ba0bcbcde316af84bc4eec4dad811a4eed4631a6eec", kill_on_drop: false }` [INFO] [stdout] 4eeaf07e4fe2659249285ba0bcbcde316af84bc4eec4dad811a4eed4631a6eec