[INFO] cloning repository https://github.com/ErisianArchitect/jank
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ErisianArchitect/jank" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FErisianArchitect%2Fjank", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FErisianArchitect%2Fjank'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 45fc985a9d76f40860fa0a264470dd4d77d68f53
[INFO] checking ErisianArchitect/jank against master#507271bc119683008ec719ecee48814e8ac86c65 for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FErisianArchitect%2Fjank" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ErisianArchitect/jank
[INFO] finished tweaking git repo https://github.com/ErisianArchitect/jank
[INFO] tweaked toml for git repo https://github.com/ErisianArchitect/jank written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ErisianArchitect/jank on toolchain 507271bc119683008ec719ecee48814e8ac86c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ErisianArchitect/jank 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" "+507271bc119683008ec719ecee48814e8ac86c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 641e5e22a9e6ec1017283f3281cc0f124cd3fdad961c5d43053671152788dc76
[INFO] running `Command { std: "docker" "start" "-a" "641e5e22a9e6ec1017283f3281cc0f124cd3fdad961c5d43053671152788dc76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "641e5e22a9e6ec1017283f3281cc0f124cd3fdad961c5d43053671152788dc76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "641e5e22a9e6ec1017283f3281cc0f124cd3fdad961c5d43053671152788dc76", kill_on_drop: false }`
[INFO] [stdout] 641e5e22a9e6ec1017283f3281cc0f124cd3fdad961c5d43053671152788dc76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a25fa21e275a7b78e3e28bbf5b1b061ef41e35c44119d3196488c28b0fbfc0c4
[INFO] running `Command { std: "docker" "start" "-a" "a25fa21e275a7b78e3e28bbf5b1b061ef41e35c44119d3196488c28b0fbfc0c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling find-msvc-tools v0.1.6
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking jankcore v0.1.0 (/opt/rustwide/workdir/crates/jankcore)
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]     Checking jank_btree v0.1.0 (/opt/rustwide/workdir/crates/jank_btree)
[INFO] [stdout] warning: fields `value` and `lookup_index` are never read
[INFO] [stdout]  --> crates/jankcore/src/collections/slotmap.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Slot<T> {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 5 |     value: T,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     lookup_index: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Slot` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `slots`, `lookup`, and `freelist` are never read
[INFO] [stdout]   --> crates/jankcore/src/collections/slotmap.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct SlotMap<T> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 11 |     slots: Vec<Slot<T>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 12 |     // usize is index for `slots`.
[INFO] [stdout] 13 |     lookup: Vec<usize>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 14 |     // usize is index for `lookup`. Elements are never removed from `lookup`.
[INFO] [stdout] 15 |     freelist: Vec<usize>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value` and `lookup_index` are never read
[INFO] [stdout]  --> crates/jankcore/src/collections/slotmap.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Slot<T> {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 5 |     value: T,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     lookup_index: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Slot` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `slots`, `lookup`, and `freelist` are never read
[INFO] [stdout]   --> crates/jankcore/src/collections/slotmap.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct SlotMap<T> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 11 |     slots: Vec<Slot<T>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 12 |     // usize is index for `slots`.
[INFO] [stdout] 13 |     lookup: Vec<usize>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 14 |     // usize is index for `lookup`. Elements are never removed from `lookup`.
[INFO] [stdout] 15 |     freelist: Vec<usize>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling cc v1.2.51
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking dashmap v6.1.0
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]    Compiling blake3 v1.8.2
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]     Checking jankhash v0.1.0 (/opt/rustwide/workdir/crates/jankhash)
[INFO] [stderr]     Checking thiserror v2.0.17
[INFO] [stderr]     Checking janksandbox v0.1.0 (/opt/rustwide/workdir/crates/janksandbox)
[INFO] [stderr]     Checking jank v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `dashmap::DashMap`
[INFO] [stdout]  --> crates/janksandbox/src/engine/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use dashmap::DashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error` and `Result`
[INFO] [stdout]  --> crates/janksandbox/src/engine/mod.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 | use error::{Error, Result};
[INFO] [stdout]   |             ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `meta`
[INFO] [stdout]   --> crates/janksandbox/src/engine/mod.rs:63:27
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn connect(&self, meta: Option<ConnectionMeta>) -> Connection {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `keys` and `children` are never read
[INFO] [stdout]   --> crates/janksandbox/src/btree.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct BTreeInternalNode<K: Key, V> {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] 22 |     keys: Vec<K>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 23 |     children: Vec<BTreeChildNode<K, V>>
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BTreeInternalNode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Internal` and `Leaf` are never constructed
[INFO] [stdout]   --> crates/janksandbox/src/btree.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum BTreeNodeKind<K: Key, V> {
[INFO] [stdout]    |      ------------- variants in this enum
[INFO] [stdout] 28 |     Internal(BTreeInternalNode<K, V>),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 29 |     Leaf(V),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BTreeNodeKind` 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 `inner` is never read
[INFO] [stdout]   --> crates/janksandbox/src/btree.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct BTreeChildNode<K: Key, V> {
[INFO] [stdout]    |        -------------- field in this struct
[INFO] [stdout] 34 |     // placed inside a box so it can be moved around inside an array quickly.
[INFO] [stdout] 35 |     inner: Box<BTreeNodeKind<K, V>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BTreeChildNode` 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: fields `keys` and `children` are never read
[INFO] [stdout]   --> crates/janksandbox/src/btree.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct BTreeNodeInner<K: Key, V> {
[INFO] [stdout]    |        -------------- fields in this struct
[INFO] [stdout] 40 |     keys: Vec<K>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 41 |     children: Vec<BTreeNodeKind<K, V>>
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BTreeNodeInner` 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 `inner` is never read
[INFO] [stdout]   --> crates/janksandbox/src/btree.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct BTreeNode<K: Key, V> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 46 |     inner: Box<BTreeNodeInner<K, V>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BTreeNode` 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 `inner` is never read
[INFO] [stdout]  --> crates/janksandbox/src/engine/connection.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ConnectionMeta {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] 8 |     pub(crate) inner: Box<ConnectionMetaInner>,
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `metadata` is never read
[INFO] [stdout]   --> crates/janksandbox/src/engine/connection.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Connection<'engine> {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub(crate) metadata: ConnectionMeta,
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> crates/janksandbox/src/engine/mod.rs:63:20
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn connect(&self, meta: Option<ConnectionMeta>) -> Connection {
[INFO] [stdout]    |                    ^^^^^ the lifetime is elided here       ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn connect(&self, meta: Option<ConnectionMeta>) -> Connection<'_> {
[INFO] [stdout]    |                                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `dashmap::DashMap`
[INFO] [stdout]  --> crates/janksandbox/src/engine/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use dashmap::DashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error` and `Result`
[INFO] [stdout]  --> crates/janksandbox/src/engine/mod.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 | use error::{Error, Result};
[INFO] [stdout]   |             ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `meta`
[INFO] [stdout]   --> crates/janksandbox/src/engine/mod.rs:63:27
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn connect(&self, meta: Option<ConnectionMeta>) -> Connection {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `keys` and `children` are never read
[INFO] [stdout]   --> crates/janksandbox/src/btree.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct BTreeInternalNode<K: Key, V> {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] 22 |     keys: Vec<K>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 23 |     children: Vec<BTreeChildNode<K, V>>
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BTreeInternalNode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Internal` and `Leaf` are never constructed
[INFO] [stdout]   --> crates/janksandbox/src/btree.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum BTreeNodeKind<K: Key, V> {
[INFO] [stdout]    |      ------------- variants in this enum
[INFO] [stdout] 28 |     Internal(BTreeInternalNode<K, V>),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 29 |     Leaf(V),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BTreeNodeKind` 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 `inner` is never read
[INFO] [stdout]   --> crates/janksandbox/src/btree.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct BTreeChildNode<K: Key, V> {
[INFO] [stdout]    |        -------------- field in this struct
[INFO] [stdout] 34 |     // placed inside a box so it can be moved around inside an array quickly.
[INFO] [stdout] 35 |     inner: Box<BTreeNodeKind<K, V>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BTreeChildNode` 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: fields `keys` and `children` are never read
[INFO] [stdout]   --> crates/janksandbox/src/btree.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct BTreeNodeInner<K: Key, V> {
[INFO] [stdout]    |        -------------- fields in this struct
[INFO] [stdout] 40 |     keys: Vec<K>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 41 |     children: Vec<BTreeNodeKind<K, V>>
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BTreeNodeInner` 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 `inner` is never read
[INFO] [stdout]   --> crates/janksandbox/src/btree.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct BTreeNode<K: Key, V> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 46 |     inner: Box<BTreeNodeInner<K, V>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BTreeNode` 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 `inner` is never read
[INFO] [stdout]  --> crates/janksandbox/src/engine/connection.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ConnectionMeta {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] 8 |     pub(crate) inner: Box<ConnectionMetaInner>,
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `metadata` is never read
[INFO] [stdout]   --> crates/janksandbox/src/engine/connection.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Connection<'engine> {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub(crate) metadata: ConnectionMeta,
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> crates/janksandbox/src/engine/mod.rs:63:20
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn connect(&self, meta: Option<ConnectionMeta>) -> Connection {
[INFO] [stdout]    |                    ^^^^^ the lifetime is elided here       ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn connect(&self, meta: Option<ConnectionMeta>) -> Connection<'_> {
[INFO] [stdout]    |                                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iter`
[INFO] [stdout]  --> crates/janksandbox/src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{iter, time::Duration};
[INFO] [stdout]   |           ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `thousand` is never used
[INFO] [stdout]  --> crates/janksandbox/src/main.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | const fn thousand(n: usize) -> usize {
[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 `million` is never used
[INFO] [stdout]  --> crates/janksandbox/src/main.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | const fn million(n: usize) -> usize {
[INFO] [stdout]   |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `billion` is never used
[INFO] [stdout]   --> crates/janksandbox/src/main.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 | const fn billion(n: usize) -> usize {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num` is never used
[INFO] [stdout]   --> crates/janksandbox/src/main.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | const fn num(billion: usize, million: usize, thousand: usize, rest: usize) -> usize {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iter`
[INFO] [stdout]  --> crates/janksandbox/src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{iter, time::Duration};
[INFO] [stdout]   |           ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `thousand` is never used
[INFO] [stdout]  --> crates/janksandbox/src/main.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | const fn thousand(n: usize) -> usize {
[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 `million` is never used
[INFO] [stdout]  --> crates/janksandbox/src/main.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | const fn million(n: usize) -> usize {
[INFO] [stdout]   |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `billion` is never used
[INFO] [stdout]   --> crates/janksandbox/src/main.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 | const fn billion(n: usize) -> usize {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num` is never used
[INFO] [stdout]   --> crates/janksandbox/src/main.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | const fn num(billion: usize, million: usize, thousand: usize, rest: usize) -> usize {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.30s
[INFO] running `Command { std: "docker" "inspect" "a25fa21e275a7b78e3e28bbf5b1b061ef41e35c44119d3196488c28b0fbfc0c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a25fa21e275a7b78e3e28bbf5b1b061ef41e35c44119d3196488c28b0fbfc0c4", kill_on_drop: false }`
[INFO] [stdout] a25fa21e275a7b78e3e28bbf5b1b061ef41e35c44119d3196488c28b0fbfc0c4
