[INFO] cloning repository https://github.com/fuji-184/Rust_Lock_And_LockFree_Benchmark
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fuji-184/Rust_Lock_And_LockFree_Benchmark" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffuji-184%2FRust_Lock_And_LockFree_Benchmark", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffuji-184%2FRust_Lock_And_LockFree_Benchmark'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c226ce9e9d94ec385dea92fb953829079fe8b938
[INFO] checking fuji-184/Rust_Lock_And_LockFree_Benchmark against try#54cf65b8d066c082e536455049b95943cf30378f for pr-151920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffuji-184%2FRust_Lock_And_LockFree_Benchmark" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/fuji-184/Rust_Lock_And_LockFree_Benchmark
[INFO] finished tweaking git repo https://github.com/fuji-184/Rust_Lock_And_LockFree_Benchmark
[INFO] tweaked toml for git repo https://github.com/fuji-184/Rust_Lock_And_LockFree_Benchmark written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/fuji-184/Rust_Lock_And_LockFree_Benchmark on toolchain 54cf65b8d066c082e536455049b95943cf30378f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/fuji-184/Rust_Lock_And_LockFree_Benchmark 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" "+54cf65b8d066c082e536455049b95943cf30378f" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30e5826894616003d1b19514cc285554cfbf37e7bad9ee82420e0823b3516f95
[INFO] running `Command { std: "docker" "start" "-a" "30e5826894616003d1b19514cc285554cfbf37e7bad9ee82420e0823b3516f95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30e5826894616003d1b19514cc285554cfbf37e7bad9ee82420e0823b3516f95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30e5826894616003d1b19514cc285554cfbf37e7bad9ee82420e0823b3516f95", kill_on_drop: false }`
[INFO] [stdout] 30e5826894616003d1b19514cc285554cfbf37e7bad9ee82420e0823b3516f95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5ae439fa12ecefa930ab2d974c04e78f0d6b0ba127d16cf214ea9e159dd18e3
[INFO] running `Command { std: "docker" "start" "-a" "d5ae439fa12ecefa930ab2d974c04e78f0d6b0ba127d16cf214ea9e159dd18e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking lock_and_lockfree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `parking_lot::lock_api::MutexGuard` that must be used
[INFO] [stdout]   --> src/parking_lot.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             black_box(res);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if unused the Mutex will immediately unlock
[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] 24 |             let _ = black_box(res);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `parking_lot::lock_api::RwLockReadGuard` that must be used
[INFO] [stdout]   --> src/parking_lot.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |             black_box(res);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if unused the RwLock will immediately unlock
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |             let _ = black_box(res);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::sync::MutexGuard` that must be used
[INFO] [stdout]   --> src/std_collection.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |             black_box(res);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if unused the Mutex will immediately unlock
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _ = black_box(res);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::sync::RwLockReadGuard` that must be used
[INFO] [stdout]   --> src/std_collection.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |             black_box(res);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if unused the RwLock will immediately unlock
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let _ = black_box(res);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `parking_lot::lock_api::MutexGuard` that must be used
[INFO] [stdout]   --> src/parking_lot.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             black_box(res);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if unused the Mutex will immediately unlock
[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] 24 |             let _ = black_box(res);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `parking_lot::lock_api::RwLockReadGuard` that must be used
[INFO] [stdout]   --> src/parking_lot.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |             black_box(res);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if unused the RwLock will immediately unlock
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |             let _ = black_box(res);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::sync::MutexGuard` that must be used
[INFO] [stdout]   --> src/std_collection.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |             black_box(res);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if unused the Mutex will immediately unlock
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let _ = black_box(res);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::sync::RwLockReadGuard` that must be used
[INFO] [stdout]   --> src/std_collection.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |             black_box(res);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if unused the RwLock will immediately unlock
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let _ = black_box(res);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "d5ae439fa12ecefa930ab2d974c04e78f0d6b0ba127d16cf214ea9e159dd18e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5ae439fa12ecefa930ab2d974c04e78f0d6b0ba127d16cf214ea9e159dd18e3", kill_on_drop: false }`
[INFO] [stdout] d5ae439fa12ecefa930ab2d974c04e78f0d6b0ba127d16cf214ea9e159dd18e3
