[INFO] cloning repository https://github.com/Y-ZD-heheka/rust_learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Y-ZD-heheka/rust_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FY-ZD-heheka%2Frust_learn", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 629bc775d911489afe03b734310daa89e189cd39
[INFO] checking Y-ZD-heheka/rust_learn against master#ff647322379c48947c196639599067665ff9eb88 for pr-151539-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FY-ZD-heheka%2Frust_learn" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Y-ZD-heheka/rust_learn
[INFO] finished tweaking git repo https://github.com/Y-ZD-heheka/rust_learn
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[INFO] validating manifest of git repo https://github.com/Y-ZD-heheka/rust_learn on toolchain ff647322379c48947c196639599067665ff9eb88
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff647322379c48947c196639599067665ff9eb88" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff647322379c48947c196639599067665ff9eb88" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
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[INFO] [stdout] warning: unexpected `cfg` condition value: `systemd`
[INFO] [stdout]    --> src/modules.rs:232:11
[INFO] [stdout]     |
[INFO] [stdout] 232 |     #[cfg(feature = "systemd")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `systemd` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `systemd`
[INFO] [stdout]    --> src/modules.rs:232:11
[INFO] [stdout]     |
[INFO] [stdout] 232 |     #[cfg(feature = "systemd")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `systemd` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `internal_adder` is never used
[INFO] [stdout]   --> src/testing/domain.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn internal_adder(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_all_testing_examples` is never used
[INFO] [stdout]    --> src/testing/performance.rs:145:8
[INFO] [stdout]     |
[INFO] [stdout] 145 | pub fn run_all_testing_examples() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `items` are never read
[INFO] [stdout]    --> src/testing/performance.rs:249:5
[INFO] [stdout]     |
[INFO] [stdout] 248 | struct Order {
[INFO] [stdout]     |        ----- fields in this struct
[INFO] [stdout] 249 |     id: u32,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 250 |     items: Vec<OrderItem>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Order` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `product_id` is never read
[INFO] [stdout]    --> src/testing/performance.rs:257:5
[INFO] [stdout]     |
[INFO] [stdout] 256 | struct OrderItem {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 257 |     product_id: u32,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `OrderItem` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Cancelled` is never constructed
[INFO] [stdout]    --> src/testing/performance.rs:266:5
[INFO] [stdout]     |
[INFO] [stdout] 263 | enum OrderStatus {
[INFO] [stdout]     |      ----------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 266 |     Cancelled,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `OrderStatus` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_all_testing_examples` is never used
[INFO] [stdout]    --> src/testing/performance.rs:145:8
[INFO] [stdout]     |
[INFO] [stdout] 145 | pub fn run_all_testing_examples() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `items` are never read
[INFO] [stdout]    --> src/testing/performance.rs:249:5
[INFO] [stdout]     |
[INFO] [stdout] 248 | struct Order {
[INFO] [stdout]     |        ----- fields in this struct
[INFO] [stdout] 249 |     id: u32,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 250 |     items: Vec<OrderItem>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Order` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `product_id` is never read
[INFO] [stdout]    --> src/testing/performance.rs:257:5
[INFO] [stdout]     |
[INFO] [stdout] 256 | struct OrderItem {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 257 |     product_id: u32,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `OrderItem` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Cancelled` is never constructed
[INFO] [stdout]    --> src/testing/performance.rs:266:5
[INFO] [stdout]     |
[INFO] [stdout] 263 | enum OrderStatus {
[INFO] [stdout]     |      ----------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 266 |     Cancelled,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `OrderStatus` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> tests/integration_test.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 | /         manager
[INFO] [stdout] 171 | |             .get_task_mut(done_id)
[INFO] [stdout] 172 | |             .expect("persisted task should exist")
[INFO] [stdout] 173 | |             .complete();
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 170 |         let _ = manager
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> benches/mod.rs:498:17
[INFO] [stdout]     |
[INFO] [stdout] 498 |                 manager.add_task(task);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 498 |                 let _ = manager.add_task(task);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> benches/mod.rs:509:13
[INFO] [stdout]     |
[INFO] [stdout] 509 |             manager.add_task(task);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 509 |             let _ = manager.add_task(task);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> benches/mod.rs:522:13
[INFO] [stdout]     |
[INFO] [stdout] 522 |             manager.add_task(task);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 522 |             let _ = manager.add_task(task);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 02s
[INFO] running `Command { std: "docker" "inspect" "23edfd3d773f0b08872113bc6f7a10ce6dbd0af2f3f52c3a4626f36abd3d1067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23edfd3d773f0b08872113bc6f7a10ce6dbd0af2f3f52c3a4626f36abd3d1067", kill_on_drop: false }`
[INFO] [stdout] 23edfd3d773f0b08872113bc6f7a10ce6dbd0af2f3f52c3a4626f36abd3d1067
