[INFO] cloning repository https://github.com/ajboyle806/yield-rwlock
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ajboyle806/yield-rwlock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajboyle806%2Fyield-rwlock", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajboyle806%2Fyield-rwlock'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 683be448a9209a818c50d8bc22cfe77e9f8cda12
[INFO] checking ajboyle806/yield-rwlock against eca445e5ae4a6679cc27d3a09106ce245e13a5a6 for pr-162478
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajboyle806%2Fyield-rwlock" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ajboyle806/yield-rwlock
[INFO] finished tweaking git repo https://github.com/ajboyle806/yield-rwlock
[INFO] tweaked toml for git repo https://github.com/ajboyle806/yield-rwlock written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ajboyle806/yield-rwlock on toolchain eca445e5ae4a6679cc27d3a09106ce245e13a5a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ajboyle806/yield-rwlock 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" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: binary `lock_yield_mvp` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-3-tc1/source/target/.../lock_yield_mvp
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `lock-yield-mvp`, convert `package.name`
[INFO] [stderr]   --> Cargo.toml:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 - name = "lock_yield_mvp"
[INFO] [stderr] 11 + name = "lock-yield-mvp"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `lock-yield-mvp`, specify `bin.name`
[INFO] [stderr]   --> Cargo.toml:12:19
[INFO] [stderr]    |
[INFO] [stderr] 12 ~ version = "0.1.0"
[INFO] [stderr] 13 + [[bin]]
[INFO] [stderr] 14 + name = "lock-yield-mvp"
[INFO] [stderr] 15 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `lock_yield_mvp` (manifest) generated 1 warning
[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-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4975affe429f1712ad8a7bffc3ad9b8708f4dec6fd8afe1e62257824f1543c98
[INFO] running `Command { std: "docker" "start" "4975affe429f1712ad8a7bffc3ad9b8708f4dec6fd8afe1e62257824f1543c98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4975affe429f1712ad8a7bffc3ad9b8708f4dec6fd8afe1e62257824f1543c98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4975affe429f1712ad8a7bffc3ad9b8708f4dec6fd8afe1e62257824f1543c98" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4975affe429f1712ad8a7bffc3ad9b8708f4dec6fd8afe1e62257824f1543c98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4975affe429f1712ad8a7bffc3ad9b8708f4dec6fd8afe1e62257824f1543c98" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: binary `lock_yield_mvp` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../lock_yield_mvp
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `lock-yield-mvp`, convert `package.name`
[INFO] [stderr]   --> Cargo.toml:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 - name = "lock_yield_mvp"
[INFO] [stderr] 11 + name = "lock-yield-mvp"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `lock-yield-mvp`, specify `bin.name`
[INFO] [stderr]   --> Cargo.toml:12:19
[INFO] [stderr]    |
[INFO] [stderr] 12 ~ version = "0.1.0"
[INFO] [stderr] 13 + [[bin]]
[INFO] [stderr] 14 + name = "lock-yield-mvp"
[INFO] [stderr] 15 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `lock_yield_mvp` (manifest) generated 1 warning
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking bitflags v2.13.0
[INFO] [stderr]    Compiling nix v0.31.3
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking lock_yield_mvp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `lock` and `min_priority` are never read
[INFO] [stdout]   --> src/yieldable_rwlock.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub struct ReadGuard<'a, T> {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 55 |     guard: RwLockReadGuard<'a, T>,
[INFO] [stdout] 56 |     lock: &'a YieldableRwLock<T>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 57 |     min_priority: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `yield_if_needed` is never used
[INFO] [stdout]   --> src/yieldable_rwlock.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 60 | impl<'a, T> ReadGuard<'a, T> {
[INFO] [stdout]    | ---------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 64 |     pub fn yield_if_needed(self) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `lock`, `interval`, and `min_priority` are never read
[INFO] [stdout]   --> src/yieldable_rwlock.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub struct YieldingIter<'a, T> {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 93 |     lock: &'a YieldableRwLock<T>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 94 |     interval: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 95 |     min_priority: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `for_each` is never used
[INFO] [stdout]    --> src/yieldable_rwlock.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout]  98 | impl<'a, T> YieldingIter<'a, T> {
[INFO] [stdout]     | ------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 102 |     pub fn for_each(&self, mut f: impl FnMut(&T, usize) -> bool) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read_guard` and `read_guard_at` are never used
[INFO] [stdout]    --> src/yieldable_rwlock.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 125 | impl<T> YieldableRwLock<T> {
[INFO] [stdout]     | -------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub fn read_guard(self: &Arc<Self>) -> ReadGuard<'_, T> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 149 |     pub fn read_guard_at(self: &Arc<Self>, min_priority: u8) -> ReadGuard<'_, T> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: unused dependency `nix`
[INFO] [stderr]  --> Cargo.toml:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | [dependencies.nix]
[INFO] [stderr]   |               ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `nix`
[INFO] [stderr] warning: `lock_yield_mvp` (manifest) generated 1 warning
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.76s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nix v0.31.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "4975affe429f1712ad8a7bffc3ad9b8708f4dec6fd8afe1e62257824f1543c98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4975affe429f1712ad8a7bffc3ad9b8708f4dec6fd8afe1e62257824f1543c98", kill_on_drop: false }`
[INFO] [stdout] 4975affe429f1712ad8a7bffc3ad9b8708f4dec6fd8afe1e62257824f1543c98
