[INFO] fetching crate kvbench 0.3.0...
[INFO] checking kvbench-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate kvbench 0.3.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate kvbench 0.3.0
[INFO] finished tweaking crates.io crate kvbench 0.3.0
[INFO] tweaked toml for crates.io crate kvbench 0.3.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate kvbench 0.3.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate kvbench 0.3.0 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 983a2fb5f55fe92265bc36be65630438673bea42ac6d516a45604fac6eb23ccf
[INFO] running `Command { std: "docker" "start" "-a" "983a2fb5f55fe92265bc36be65630438673bea42ac6d516a45604fac6eb23ccf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "983a2fb5f55fe92265bc36be65630438673bea42ac6d516a45604fac6eb23ccf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "983a2fb5f55fe92265bc36be65630438673bea42ac6d516a45604fac6eb23ccf", kill_on_drop: false }`
[INFO] [stdout] 983a2fb5f55fe92265bc36be65630438673bea42ac6d516a45604fac6eb23ccf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a373a84b192bea9b5ed68ed5f379f66cc1d767d3a9645bfbac669bd4602ac75e
[INFO] running `Command { std: "docker" "start" "-a" "a373a84b192bea9b5ed68ed5f379f66cc1d767d3a9645bfbac669bd4602ac75e", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]     Checking bitflags v2.8.0
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]    Compiling libm v0.2.11
[INFO] [stderr]     Checking anstyle-parse v0.2.6
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking anstyle v1.0.10
[INFO] [stderr]     Checking anstyle-query v1.1.2
[INFO] [stderr]     Checking colorchoice v1.0.3
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]     Checking indexmap v2.7.1
[INFO] [stderr]     Checking anstream v0.6.18
[INFO] [stderr]    Compiling uncased v0.9.10
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]     Checking winnow v0.7.1
[INFO] [stderr]     Checking log v0.4.25
[INFO] [stderr]     Checking miniz_oxide v0.8.3
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling figment v0.10.19
[INFO] [stderr]     Checking inlinable_string v0.1.15
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking clap_lex v0.7.4
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking flate2 v1.0.35
[INFO] [stderr]     Checking clap_builder v4.5.27
[INFO] [stderr]     Checking getrandom v0.3.1
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking raw-cpuid v11.3.0
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking core_affinity v0.8.1
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]     Checking linux-raw-sys v0.4.15
[INFO] [stderr]     Checking inventory v0.3.19
[INFO] [stderr]     Checking hdrhistogram v7.5.4
[INFO] [stderr]     Checking ctrlc v3.4.5
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking quanta v0.12.5
[INFO] [stderr]     Checking env_filter v0.1.3
[INFO] [stderr]     Checking env_logger v0.11.6
[INFO] [stderr]     Checking tempfile v3.16.0
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling pear_codegen v0.2.9
[INFO] [stderr]    Compiling clap_derive v4.5.28
[INFO] [stderr]     Checking pear v0.2.9
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking ahash v0.8.11
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking clap v4.5.28
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.0
[INFO] [stderr]     Checking rand_distr v0.5.1
[INFO] [stderr]     Checking toml_datetime v0.6.8
[INFO] [stderr]     Checking serde_spanned v0.6.8
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking toml_edit v0.22.23
[INFO] [stderr]     Checking toml v0.8.20
[INFO] [stderr]     Checking kvbench v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `get` is never read
[INFO] [stdout]    --> src/workload.rs:398:39
[INFO] [stdout]     |
[INFO] [stdout] 398 |                 OperationType::Get => get += 1,
[INFO] [stdout]     |                                       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `get` is never read
[INFO] [stdout]    --> src/workload.rs:888:21
[INFO] [stdout]     |
[INFO] [stdout] 888 |                     get += 1;
[INFO] [stdout]     |                     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/bench.rs:967:41
[INFO] [stdout]     |
[INFO] [stdout] 967 |     let barrier = Arc::new(Barrier::new(benchmark.threads.try_into().unwrap()));
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]     --> src/bench.rs:1006:41
[INFO] [stdout]      |
[INFO] [stdout] 1006 |     let barrier = Arc::new(Barrier::new((benchmark.threads).try_into().unwrap()));
[INFO] [stdout]      |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kvbench` (lib test) due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/bench.rs:967:41
[INFO] [stdout]     |
[INFO] [stdout] 967 |     let barrier = Arc::new(Barrier::new(benchmark.threads.try_into().unwrap()));
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]     --> src/bench.rs:1006:41
[INFO] [stdout]      |
[INFO] [stdout] 1006 |     let barrier = Arc::new(Barrier::new((benchmark.threads).try_into().unwrap()));
[INFO] [stdout]      |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kvbench` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a373a84b192bea9b5ed68ed5f379f66cc1d767d3a9645bfbac669bd4602ac75e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a373a84b192bea9b5ed68ed5f379f66cc1d767d3a9645bfbac669bd4602ac75e", kill_on_drop: false }`
[INFO] [stdout] a373a84b192bea9b5ed68ed5f379f66cc1d767d3a9645bfbac669bd4602ac75e
