[INFO] cloning repository https://github.com/Beardiegames/multi_threaded_pool [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Beardiegames/multi_threaded_pool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeardiegames%2Fmulti_threaded_pool", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeardiegames%2Fmulti_threaded_pool'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6b824f59af668d373ed29b7c22be8b78f91134a2 [INFO] checking Beardiegames/multi_threaded_pool/6b824f59af668d373ed29b7c22be8b78f91134a2 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeardiegames%2Fmulti_threaded_pool" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Beardiegames/multi_threaded_pool on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Beardiegames/multi_threaded_pool [INFO] finished tweaking git repo https://github.com/Beardiegames/multi_threaded_pool [INFO] tweaked toml for git repo https://github.com/Beardiegames/multi_threaded_pool written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/Beardiegames/multi_threaded_pool 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4665d0a71e953c134f0c125bc30a5c4675f95701c3b5115189609462da59f2f0 [INFO] running `Command { std: "docker" "start" "-a" "4665d0a71e953c134f0c125bc30a5c4675f95701c3b5115189609462da59f2f0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4665d0a71e953c134f0c125bc30a5c4675f95701c3b5115189609462da59f2f0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4665d0a71e953c134f0c125bc30a5c4675f95701c3b5115189609462da59f2f0", kill_on_drop: false }` [INFO] [stdout] 4665d0a71e953c134f0c125bc30a5c4675f95701c3b5115189609462da59f2f0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1359c68879b9ee8678ec23ee1b4610def6121eb3e3e40dc94921e81978f3e1c4 [INFO] running `Command { std: "docker" "start" "-a" "1359c68879b9ee8678ec23ee1b4610def6121eb3e3e40dc94921e81978f3e1c4", kill_on_drop: false }` [INFO] [stderr] Checking multi_threaded_pool v0.1.7 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `DataCell`, `DataManager`, and `ObjectPool` [INFO] [stdout] --> src/tests.rs:11:13 [INFO] [stdout] | [INFO] [stdout] 11 | use crate::{DataCell, ObjectPool, DataManager}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^^^^ ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module [INFO] [stdout] --> src/lib.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | mod tests; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/tests.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | #[warn(unused_imports)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Arc` and `Mutex` [INFO] [stdout] --> src/tests.rs:6:12 [INFO] [stdout] | [INFO] [stdout] 6 | sync::{Arc, Mutex}, [INFO] [stdout] | ^^^ ^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/tests.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | #[warn(unused_imports)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `DataCell` and `ObjectPool` [INFO] [stdout] --> src/tests.rs:11:13 [INFO] [stdout] | [INFO] [stdout] 11 | use crate::{DataCell, ObjectPool, DataManager}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/tests.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | #[warn(unused_imports)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `PoolObject` is never constructed [INFO] [stdout] --> src/tests.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | struct PoolObject(bool); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `PoolObject` has a derived impl for the trait `Default`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/shared.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | drop(handle); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut DataCell` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 24 - drop(handle); [INFO] [stdout] 24 + let _ = handle; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/shared.rs:33:13 [INFO] [stdout] | [INFO] [stdout] 33 | drop(handle); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut DataCell` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 33 - drop(handle); [INFO] [stdout] 33 + let _ = handle; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/shared.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 41 | drop(handle); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut DataCell` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 41 - drop(handle); [INFO] [stdout] 41 + let _ = handle; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/shared.rs:50:13 [INFO] [stdout] | [INFO] [stdout] 50 | drop(handle); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut DataCell` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 50 - drop(handle); [INFO] [stdout] 50 + let _ = handle; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/shared.rs:58:9 [INFO] [stdout] | [INFO] [stdout] 58 | drop(handle); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut DataCell` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 58 - drop(handle); [INFO] [stdout] 58 + let _ = handle; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/shared.rs:67:13 [INFO] [stdout] | [INFO] [stdout] 67 | drop(handle); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut DataCell` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 67 - drop(handle); [INFO] [stdout] 67 + let _ = handle; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tests.rs:104:9 [INFO] [stdout] | [INFO] [stdout] 104 | let mut cluster_updates: (usize, usize) = ( [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: field `0` is never read [INFO] [stdout] --> src/tests.rs:17:19 [INFO] [stdout] | [INFO] [stdout] 17 | struct PoolObject(bool); [INFO] [stdout] | ---------- ^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `PoolObject` has derived impls for the traits `Default` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/shared.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | drop(handle); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut DataCell` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 24 - drop(handle); [INFO] [stdout] 24 + let _ = handle; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/shared.rs:33:13 [INFO] [stdout] | [INFO] [stdout] 33 | drop(handle); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut DataCell` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 33 - drop(handle); [INFO] [stdout] 33 + let _ = handle; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/shared.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 41 | drop(handle); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut DataCell` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 41 - drop(handle); [INFO] [stdout] 41 + let _ = handle; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/shared.rs:50:13 [INFO] [stdout] | [INFO] [stdout] 50 | drop(handle); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut DataCell` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 50 - drop(handle); [INFO] [stdout] 50 + let _ = handle; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/shared.rs:58:9 [INFO] [stdout] | [INFO] [stdout] 58 | drop(handle); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut DataCell` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 58 - drop(handle); [INFO] [stdout] 58 + let _ = handle; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/shared.rs:67:13 [INFO] [stdout] | [INFO] [stdout] 67 | drop(handle); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut DataCell` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 67 - drop(handle); [INFO] [stdout] 67 + let _ = handle; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s [INFO] running `Command { std: "docker" "inspect" "1359c68879b9ee8678ec23ee1b4610def6121eb3e3e40dc94921e81978f3e1c4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1359c68879b9ee8678ec23ee1b4610def6121eb3e3e40dc94921e81978f3e1c4", kill_on_drop: false }` [INFO] [stdout] 1359c68879b9ee8678ec23ee1b4610def6121eb3e3e40dc94921e81978f3e1c4