[INFO] cloning repository https://github.com/lbt05/rust-playground [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lbt05/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flbt05%2Frust-playground", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flbt05%2Frust-playground'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a08295079cdc40ec489157aa8c87c5ef30765b43 [INFO] checking lbt05/rust-playground against beta for pr-78714 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flbt05%2Frust-playground" "/workspace/builds/worker-12/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/lbt05/rust-playground on toolchain beta [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/lbt05/rust-playground [INFO] finished tweaking git repo https://github.com/lbt05/rust-playground [INFO] tweaked toml for git repo https://github.com/lbt05/rust-playground written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/lbt05/rust-playground already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b8180888f9252c0c182c42a052d9c13090d77cbfd81a5336e623d0ad1d702552 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "b8180888f9252c0c182c42a052d9c13090d77cbfd81a5336e623d0ad1d702552", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b8180888f9252c0c182c42a052d9c13090d77cbfd81a5336e623d0ad1d702552", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b8180888f9252c0c182c42a052d9c13090d77cbfd81a5336e623d0ad1d702552", kill_on_drop: false }` [INFO] [stdout] b8180888f9252c0c182c42a052d9c13090d77cbfd81a5336e623d0ad1d702552 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e390e8f2482c517c9c86d73ebc8b6f344e14aef627d313fe67209a4e8a1649eb [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "e390e8f2482c517c9c86d73ebc8b6f344e14aef627d313fe67209a4e8a1649eb", 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] [stderr] Checking flate2 v1.0.13 [INFO] [stderr] Checking zip v0.5.4 [INFO] [stderr] Checking rust-playground v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `multi_thread_with_channel`, `simple_thread`, `thread_await_example`, `thread_with_arc_share`, `thread_with_arc`, `thread_with_channel`, `thread_with_move` [INFO] [stdout] --> src/main.rs:3:44 [INFO] [stdout] | [INFO] [stdout] 3 | ...::{multi_thread_with_channel, simple_thread, thread_await_example, thread_with_arc, thread_with_arc_share, thread_with_channel, thread_with_mov... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `multi_thread_with_channel`, `simple_thread`, `thread_await_example`, `thread_with_arc_share`, `thread_with_arc`, `thread_with_channel`, `thread_with_move` [INFO] [stdout] --> src/main.rs:3:44 [INFO] [stdout] | [INFO] [stdout] 3 | ...::{multi_thread_with_channel, simple_thread, thread_await_example, thread_with_arc, thread_with_arc_share, thread_with_channel, thread_with_mov... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/file/zip_file.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let mut file = File::open(file_path).unwrap(); [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: function is never used: `simple_thread` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn simple_thread() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `thread_await_example` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 22 | pub fn thread_await_example() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `thread_with_move` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:37:8 [INFO] [stdout] | [INFO] [stdout] 37 | pub fn thread_with_move() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `thread_with_channel` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:47:8 [INFO] [stdout] | [INFO] [stdout] 47 | pub fn thread_with_channel() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `multi_thread_with_channel` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn multi_thread_with_channel() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `thread_with_arc` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:99:8 [INFO] [stdout] | [INFO] [stdout] 99 | pub fn thread_with_arc() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `thread_with_arc_share` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:120:8 [INFO] [stdout] | [INFO] [stdout] 120 | pub fn thread_with_arc_share() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `calculation_method` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:146:4 [INFO] [stdout] | [INFO] [stdout] 146 | fn calculation_method(key: i32, data: Arc>>, thread_tx: Sender) -> () { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/file/zip_file.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let mut file = File::open(file_path).unwrap(); [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: function is never used: `simple_thread` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn simple_thread() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `thread_await_example` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 22 | pub fn thread_await_example() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `thread_with_move` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:37:8 [INFO] [stdout] | [INFO] [stdout] 37 | pub fn thread_with_move() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `thread_with_channel` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:47:8 [INFO] [stdout] | [INFO] [stdout] 47 | pub fn thread_with_channel() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `multi_thread_with_channel` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn multi_thread_with_channel() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `thread_with_arc` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:99:8 [INFO] [stdout] | [INFO] [stdout] 99 | pub fn thread_with_arc() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `thread_with_arc_share` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:120:8 [INFO] [stdout] | [INFO] [stdout] 120 | pub fn thread_with_arc_share() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `calculation_method` [INFO] [stdout] --> src/concurrency/play_concurrency.rs:146:4 [INFO] [stdout] | [INFO] [stdout] 146 | fn calculation_method(key: i32, data: Arc>>, thread_tx: Sender) -> () { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/file/zip_file.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | file.read_to_string(&mut buffer); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/file/zip_file.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | file.read_to_string(&mut buffer); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.20s [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "e390e8f2482c517c9c86d73ebc8b6f344e14aef627d313fe67209a4e8a1649eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e390e8f2482c517c9c86d73ebc8b6f344e14aef627d313fe67209a4e8a1649eb", kill_on_drop: false }` [INFO] [stdout] e390e8f2482c517c9c86d73ebc8b6f344e14aef627d313fe67209a4e8a1649eb