[INFO] cloning repository https://github.com/MilkBlock/fractal_egraph
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MilkBlock/fractal_egraph" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMilkBlock%2Ffractal_egraph", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMilkBlock%2Ffractal_egraph'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ba40bebdbac1c1ab331fda4e3c0097d61c155c9
[INFO] checking MilkBlock/fractal_egraph against 28b6e691688c15cef4c60d9044274e7b84397870 for pr-162986
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMilkBlock%2Ffractal_egraph" "/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/MilkBlock/fractal_egraph
[INFO] finished tweaking git repo https://github.com/MilkBlock/fractal_egraph
[INFO] tweaked toml for git repo https://github.com/MilkBlock/fractal_egraph written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MilkBlock/fractal_egraph on toolchain 28b6e691688c15cef4c60d9044274e7b84397870
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+28b6e691688c15cef4c60d9044274e7b84397870" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MilkBlock/fractal_egraph 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" "+28b6e691688c15cef4c60d9044274e7b84397870" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.128
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.128
[INFO] [stderr]   Downloaded enum-map-derive v0.17.0
[INFO] [stderr]   Downloaded serde_derive v1.0.229
[INFO] [stderr]   Downloaded slotted-egraphs-derive v0.0.36
[INFO] [stderr]   Downloaded sized-chunks v0.6.5
[INFO] [stderr]   Downloaded rand_xoshiro v0.6.0
[INFO] [stderr]   Downloaded pest_meta v2.9.1
[INFO] [stderr]   Downloaded fixedbitset v0.5.7
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.128
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.128
[INFO] [stderr]   Downloaded inplace-vec-builder v0.1.1
[INFO] [stderr]   Downloaded num-integer v0.1.47
[INFO] [stderr]   Downloaded num-complex v0.4.6
[INFO] [stderr]   Downloaded pest_derive v2.9.1
[INFO] [stderr]   Downloaded enum-map v2.7.3
[INFO] [stderr]   Downloaded syn v3.0.5
[INFO] [stderr]   Downloaded rayon v1.12.0
[INFO] [stderr]   Downloaded wasip2 v1.0.4+wasi-0.2.12
[INFO] [stderr]   Downloaded thiserror v2.0.20
[INFO] [stderr]   Downloaded pest v2.9.1
[INFO] [stderr]   Downloaded into-attr-derive v0.2.1
[INFO] [stderr]   Downloaded zerocopy v0.8.56
[INFO] [stderr]   Downloaded vec-collections v0.4.3
[INFO] [stderr]   Downloaded smallvec v1.16.0
[INFO] [stderr]   Downloaded ordered-float v5.5.0
[INFO] [stderr]   Downloaded bitflags v2.13.1
[INFO] [stderr]   Downloaded crossbeam-queue v0.3.13
[INFO] [stderr]   Downloaded csv v1.4.0
[INFO] [stderr]   Downloaded libc v0.2.189
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.22
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.20
[INFO] [stderr]   Downloaded arc-swap v1.9.2
[INFO] [stderr]   Downloaded num v0.4.3
[INFO] [stderr]   Downloaded dot-structures v0.1.2
[INFO] [stderr]   Downloaded binary-merge v0.1.2
[INFO] [stderr]   Downloaded typenum v1.20.1
[INFO] [stderr]   Downloaded csv-core v0.1.13
[INFO] [stderr]   Downloaded dashmap v6.2.1
[INFO] [stderr]   Downloaded slotted-egraphs v0.0.36
[INFO] [stderr]   Downloaded symbol_table v0.3.0
[INFO] [stderr]   Downloaded serde_json v1.0.151
[INFO] [stderr]   Downloaded thiserror-impl v2.0.20
[INFO] [stderr]   Downloaded egraph-serialize v0.3.0
[INFO] [stderr]   Downloaded clap_derive v4.6.4
[INFO] [stderr]   Downloaded syn v2.0.119
[INFO] [stderr]   Downloaded zmij v1.0.23
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.7
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.16
[INFO] [stderr]   Downloaded bitmaps v2.1.0
[INFO] [stderr]   Downloaded autocfg v1.5.1
[INFO] [stderr]   Downloaded js-sys v0.3.105
[INFO] [stderr]   Downloaded clap_builder v4.6.6
[INFO] [stderr]   Downloaded num-iter v0.1.46
[INFO] [stderr]   Downloaded rand v0.9.5
[INFO] [stderr]   Downloaded either v1.18.0
[INFO] [stderr]   Downloaded into-attr v0.1.1
[INFO] [stderr]   Downloaded graphviz-rust v0.9.9
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.56
[INFO] [stderr]   Downloaded dot-generator v0.2.0
[INFO] [stderr]   Downloaded sorted-iter v0.1.11
[INFO] [stderr]   Downloaded crossbeam v0.8.4
[INFO] [stderr]   Downloaded pest_generator v2.9.1
[INFO] [stderr]   Downloaded im-rc v15.1.0
[INFO] [stderr]   Downloaded clap v4.6.6
[INFO] [stderr]   Downloaded bumpalo v3.20.3
[INFO] [stderr]   Downloaded num-bigint v0.4.8
[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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 50a38f854bcb2a44ac030e7df8e114a60cbf6bf4603bb69af61c102d2ea8df02
[INFO] running `Command { std: "docker" "start" "50a38f854bcb2a44ac030e7df8e114a60cbf6bf4603bb69af61c102d2ea8df02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50a38f854bcb2a44ac030e7df8e114a60cbf6bf4603bb69af61c102d2ea8df02", 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" "50a38f854bcb2a44ac030e7df8e114a60cbf6bf4603bb69af61c102d2ea8df02" "/opt/rustwide/cargo-home/bin/cargo" "+28b6e691688c15cef4c60d9044274e7b84397870" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50a38f854bcb2a44ac030e7df8e114a60cbf6bf4603bb69af61c102d2ea8df02", 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" "50a38f854bcb2a44ac030e7df8e114a60cbf6bf4603bb69af61c102d2ea8df02" "/opt/rustwide/cargo-home/bin/cargo" "+28b6e691688c15cef4c60d9044274e7b84397870" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling libc v0.2.189
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]    Compiling autocfg v1.5.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.22
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.20
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]     Checking once_cell v1.21.4
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling crossbeam-deque v0.8.7
[INFO] [stderr]     Checking smallvec v1.16.0
[INFO] [stderr]     Checking memchr v2.8.3
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling rustversion v1.0.23
[INFO] [stderr]     Checking utf8parse v0.2.2
[INFO] [stderr]    Compiling zerocopy v0.8.56
[INFO] [stderr]    Compiling zmij v1.0.23
[INFO] [stderr]     Checking anstyle-parse v1.0.0
[INFO] [stderr]     Checking anstyle-query v1.1.5
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]     Checking colorchoice v1.0.5
[INFO] [stderr]     Checking either v1.18.0
[INFO] [stderr]     Checking equivalent v1.0.2
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.2
[INFO] [stderr]     Checking anstyle v1.0.14
[INFO] [stderr]     Checking hashbrown v0.17.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling dot-structures v0.1.2
[INFO] [stderr]    Compiling rustix v1.1.5
[INFO] [stderr]     Checking itoa v1.0.18
[INFO] [stderr]     Checking anstream v1.0.0
[INFO] [stderr]     Checking clap_lex v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.151
[INFO] [stderr]     Checking strsim v0.11.1
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking clap_builder v4.6.6
[INFO] [stderr]     Checking bumpalo v3.20.3
[INFO] [stderr]     Checking allocator-api2 v0.2.21
[INFO] [stderr]    Compiling anyhow v1.0.104
[INFO] [stderr]     Checking crossbeam-queue v0.3.13
[INFO] [stderr]     Checking arc-swap v1.9.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.16
[INFO] [stderr]     Checking rustc-hash v2.1.3
[INFO] [stderr]    Compiling syn v3.0.5
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling pest v2.9.1
[INFO] [stderr]     Checking linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling thiserror v2.0.20
[INFO] [stderr]     Checking indexmap v2.14.2
[INFO] [stderr]     Checking foldhash v0.2.0
[INFO] [stderr]     Checking bitflags v2.13.1
[INFO] [stderr]     Checking lock_api v0.4.14
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]    Compiling into-attr v0.1.1
[INFO] [stderr]    Compiling dot-generator v0.2.0
[INFO] [stderr]     Checking rayon v1.12.0
[INFO] [stderr]     Checking web-time v1.1.0
[INFO] [stderr]     Checking fastrand v2.5.0
[INFO] [stderr]     Checking typenum v1.20.1
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking num-integer v0.1.47
[INFO] [stderr]     Checking rand_core v0.9.5
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-bigint v0.4.8
[INFO] [stderr]     Checking num-iter v0.1.46
[INFO] [stderr]     Checking ordered-float v5.5.0
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]    Compiling im-rc v15.1.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking log v0.4.34
[INFO] [stderr]     Checking dyn-clone v1.0.20
[INFO] [stderr]     Checking fixedbitset v0.5.7
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking csv-core v0.1.13
[INFO] [stderr]     Checking inplace-vec-builder v0.1.1
[INFO] [stderr]     Checking sorted-iter v0.1.11
[INFO] [stderr]     Checking binary-merge v0.1.2
[INFO] [stderr]    Compiling egglog v2.0.0 (/opt/rustwide/workdir/egglog)
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking ryu v1.0.23
[INFO] [stderr]     Checking egglog-ast v2.0.0 (/opt/rustwide/workdir/egglog/egglog-ast)
[INFO] [stderr]     Checking dashmap v6.2.1
[INFO] [stderr]    Compiling pest_meta v2.9.1
[INFO] [stderr]     Checking tempfile v3.27.0
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking symbol_table v0.3.0
[INFO] [stderr]     Checking sized-chunks v0.6.5
[INFO] [stderr]    Compiling enum-map-derive v0.17.0
[INFO] [stderr]    Compiling slotted-egraphs-derive v0.0.36
[INFO] [stderr]    Compiling egglog-add-primitive v2.0.0 (/opt/rustwide/workdir/egglog/src/sort/add_primitive)
[INFO] [stderr]     Checking hashbrown v0.16.1
[INFO] [stderr]     Checking egglog-numeric-id v2.0.0 (/opt/rustwide/workdir/egglog/numeric-id)
[INFO] [stderr]     Checking csv v1.4.0
[INFO] [stderr]    Compiling pest_generator v2.9.1
[INFO] [stderr]     Checking enum-map v2.7.3
[INFO] [stderr]    Compiling into-attr-derive v0.2.1
[INFO] [stderr]     Checking egglog-concurrency v2.0.0 (/opt/rustwide/workdir/egglog/concurrency)
[INFO] [stderr]     Checking egglog-union-find v2.0.0 (/opt/rustwide/workdir/egglog/union-find)
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]    Compiling clap_derive v4.6.4
[INFO] [stderr]    Compiling thiserror-impl v2.0.20
[INFO] [stderr]    Compiling pest_derive v2.9.1
[INFO] [stderr]     Checking graphviz-rust v0.9.9
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking egraph-serialize v0.3.0
[INFO] [stderr]     Checking rand v0.9.5
[INFO] [stderr]     Checking clap v4.6.6
[INFO] [stderr]     Checking egglog-reports v2.0.0 (/opt/rustwide/workdir/egglog/egglog-reports)
[INFO] [stderr]     Checking vec-collections v0.4.3
[INFO] [stderr]     Checking egglog-core-relations v2.0.0 (/opt/rustwide/workdir/egglog/core-relations)
[INFO] [stderr]     Checking slotted-egraphs v0.0.36
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::fetch_update`: renamed to `try_update` for consistency
[INFO] [stdout]    --> egglog/core-relations/src/trace.rs:128:18
[INFO] [stdout]     |
[INFO] [stdout] 128 |                 .fetch_update(Ordering::Relaxed, Ordering::Relaxed, |n| {
[INFO] [stdout]     |                  ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] help: replace the use of the deprecated method
[INFO] [stdout]     |
[INFO] [stdout] 128 -                 .fetch_update(Ordering::Relaxed, Ordering::Relaxed, |n| {
[INFO] [stdout] 128 +                 .try_update(Ordering::Relaxed, Ordering::Relaxed, |n| {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `get_var`
[INFO] [stdout]    --> egglog/core-relations/src/free_join/plan.rs:423:13
[INFO] [stdout]     |
[INFO] [stdout] 423 |         let get_var = |var: Variable| {
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_get_var`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `get_atom`
[INFO] [stdout]    --> egglog/core-relations/src/free_join/plan.rs:430:13
[INFO] [stdout]     |
[INFO] [stdout] 430 |         let get_atom = |atom: AtomId| {
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_get_atom`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]     --> egglog/core-relations/src/free_join/mod.rs:1074:29
[INFO] [stdout]      |
[INFO] [stdout] 1074 |             let mut count = 0usize;
[INFO] [stdout]      |                             ^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 1081 |             count = info.table.len();
[INFO] [stdout]      |             ------------------------ `count` is overwritten here before the previous value is read
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking egglog-bridge v2.0.0 (/opt/rustwide/workdir/egglog/egglog-bridge)
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]   --> egglog/src/lib.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 | use std::str::FromStr;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `with_term_encoding_enabled` and `with_proofs_enabled` are never used
[INFO] [stdout]    --> egglog/src/lib.rs:500:19
[INFO] [stdout]     |
[INFO] [stdout] 475 | impl EGraph {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 500 |     pub(crate) fn with_term_encoding_enabled(mut self) -> Self {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 508 |     pub(crate) fn with_proofs_enabled(mut self) -> Self {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking egg_layout v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `advance` is never used
[INFO] [stdout]    --> src/native_ripen.rs:323:12
[INFO] [stdout]     |
[INFO] [stdout]  75 | impl Session {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 323 |     pub fn advance(&mut self) -> Result<()> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Value`
[INFO] [stdout]  --> tests/native_debug.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json::Value;
[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 `raw` is never used
[INFO] [stdout]  --> examples/support/cell_names.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn raw(name: &str) -> [String; 2] {
[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 `canonical` is never used
[INFO] [stdout]  --> examples/support/cell_names.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn canonical(name: &str) -> [String; 2] {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 58.69s
[INFO] running `Command { std: "docker" "inspect" "50a38f854bcb2a44ac030e7df8e114a60cbf6bf4603bb69af61c102d2ea8df02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50a38f854bcb2a44ac030e7df8e114a60cbf6bf4603bb69af61c102d2ea8df02", kill_on_drop: false }`
[INFO] [stdout] 50a38f854bcb2a44ac030e7df8e114a60cbf6bf4603bb69af61c102d2ea8df02
