[INFO] cloning repository https://github.com/ArhanChaudhary/generativity-pattern-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArhanChaudhary/generativity-pattern-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArhanChaudhary%2Fgenerativity-pattern-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArhanChaudhary%2Fgenerativity-pattern-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 064f36f6468e8d66c54b1d13125d5fe11e836959
[INFO] testing ArhanChaudhary/generativity-pattern-rs against try#bd7d74411512a3dd3b35d2f699c51dd2557c7e7e+cargoflags=-Zbuild-dir-new-layout for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArhanChaudhary%2Fgenerativity-pattern-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-5-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/ArhanChaudhary/generativity-pattern-rs
[INFO] finished tweaking git repo https://github.com/ArhanChaudhary/generativity-pattern-rs
[INFO] tweaked toml for git repo https://github.com/ArhanChaudhary/generativity-pattern-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ArhanChaudhary/generativity-pattern-rs on toolchain bd7d74411512a3dd3b35d2f699c51dd2557c7e7e
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[INFO] crate git repo https://github.com/ArhanChaudhary/generativity-pattern-rs 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" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b7e29f4cf6d19e3777e03ecd4fa3c3ef9127a27aba48e1802ff9ef05adb8b2d
[INFO] running `Command { std: "docker" "start" "-a" "8b7e29f4cf6d19e3777e03ecd4fa3c3ef9127a27aba48e1802ff9ef05adb8b2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b7e29f4cf6d19e3777e03ecd4fa3c3ef9127a27aba48e1802ff9ef05adb8b2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b7e29f4cf6d19e3777e03ecd4fa3c3ef9127a27aba48e1802ff9ef05adb8b2d", kill_on_drop: false }`
[INFO] [stdout] 8b7e29f4cf6d19e3777e03ecd4fa3c3ef9127a27aba48e1802ff9ef05adb8b2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "build" "--frozen" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 1fff164e9ad1eb1b86d26fdd303ec565db4f1f1dc65ca401bf6044f4e626c3e2
[INFO] running `Command { std: "docker" "start" "-a" "1fff164e9ad1eb1b86d26fdd303ec565db4f1f1dc65ca401bf6044f4e626c3e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling generativity v1.1.0
[INFO] [stderr]    Compiling permutation-rs v3.0.0
[INFO] [stderr]    Compiling generativity-pattern-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `make_guard`
[INFO] [stdout]  --> src/branded_vec.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | use generativity::{Guard, Id, make_guard};
[INFO] [stdout]   |                               ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `base_permutation_length` is never read
[INFO] [stdout]  --> src/3-unsafe_trait.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct PermGroup {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 4 |     base_permutation_length: 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: struct `BrandedVec` is never constructed
[INFO] [stdout]  --> src/branded_vec.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct BrandedVec<'id, T> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BrandedIndex` is never constructed
[INFO] [stdout]   --> src/branded_vec.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct BrandedIndex<'id> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get_index`, `get`, `get_mut`, and `push` are never used
[INFO] [stdout]   --> src/branded_vec.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<'id, T> BrandedVec<'id, T> {
[INFO] [stdout]    | ------------------------------- associated items in this implementation
[INFO] [stdout] 19 |     pub fn new(inner: Vec<T>, guard: Guard<'id>) -> BrandedVec<'id, T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn get_index(&self, index: usize) -> Option<BrandedIndex<'id>> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn get(&self, index: BrandedIndex<'id>) -> &T {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub fn get_mut<'a>(&'a mut self, index: BrandedIndex<'id>) -> &'a mut T {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn push<'a>(&'a mut self, val: T) -> BrandedIndex<'id> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "1fff164e9ad1eb1b86d26fdd303ec565db4f1f1dc65ca401bf6044f4e626c3e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fff164e9ad1eb1b86d26fdd303ec565db4f1f1dc65ca401bf6044f4e626c3e2", kill_on_drop: false }`
[INFO] [stdout] 1fff164e9ad1eb1b86d26fdd303ec565db4f1f1dc65ca401bf6044f4e626c3e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "--no-run" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 6dc5b15bf1f03628d62669d9220c4da73daf4890e8c60dd85bb4238ea19e8a97
[INFO] running `Command { std: "docker" "start" "-a" "6dc5b15bf1f03628d62669d9220c4da73daf4890e8c60dd85bb4238ea19e8a97", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling ciborium-io v0.2.2
[INFO] [stderr]    Compiling clap_lex v0.7.5
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling half v2.6.0
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling oorandom v11.1.5
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stdout] warning: unused import: `make_guard`
[INFO] [stdout]  --> src/branded_vec.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | use generativity::{Guard, Id, make_guard};
[INFO] [stdout]   |                               ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `base_permutation_length` is never read
[INFO] [stdout]  --> src/3-unsafe_trait.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct PermGroup {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 4 |     base_permutation_length: 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: struct `BrandedVec` is never constructed
[INFO] [stdout]  --> src/branded_vec.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct BrandedVec<'id, T> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BrandedIndex` is never constructed
[INFO] [stdout]   --> src/branded_vec.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct BrandedIndex<'id> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get_index`, `get`, `get_mut`, and `push` are never used
[INFO] [stdout]   --> src/branded_vec.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<'id, T> BrandedVec<'id, T> {
[INFO] [stdout]    | ------------------------------- associated items in this implementation
[INFO] [stdout] 19 |     pub fn new(inner: Vec<T>, guard: Guard<'id>) -> BrandedVec<'id, T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn get_index(&self, index: usize) -> Option<BrandedIndex<'id>> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn get(&self, index: BrandedIndex<'id>) -> &T {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub fn get_mut<'a>(&'a mut self, index: BrandedIndex<'id>) -> &'a mut T {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn push<'a>(&'a mut self, val: T) -> BrandedIndex<'id> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling clap_builder v4.5.40
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling clap v4.5.40
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.6.0
[INFO] [stderr]    Compiling generativity-pattern-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `base_permutation_length` is never read
[INFO] [stdout]  --> src/3-unsafe_trait.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct PermGroup {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 4 |     base_permutation_length: 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: field `id` is never read
[INFO] [stdout]   --> src/branded_vec.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct BrandedIndex<'id> {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 14 |     idx: usize,
[INFO] [stdout] 15 |     id: Id<'id>,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BrandedIndex` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 26.11s
[INFO] running `Command { std: "docker" "inspect" "6dc5b15bf1f03628d62669d9220c4da73daf4890e8c60dd85bb4238ea19e8a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dc5b15bf1f03628d62669d9220c4da73daf4890e8c60dd85bb4238ea19e8a97", kill_on_drop: false }`
[INFO] [stdout] 6dc5b15bf1f03628d62669d9220c4da73daf4890e8c60dd85bb4238ea19e8a97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 6aefe99183fa97d62f6cbe7d93ad66c08033f93517fa574722791104ea818e91
[INFO] running `Command { std: "docker" "start" "-a" "6aefe99183fa97d62f6cbe7d93ad66c08033f93517fa574722791104ea818e91", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `make_guard`
[INFO] [stderr]  --> src/branded_vec.rs:1:31
[INFO] [stderr]   |
[INFO] [stderr] 1 | use generativity::{Guard, Id, make_guard};
[INFO] [stderr]   |                               ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `base_permutation_length` is never read
[INFO] [stderr]  --> src/3-unsafe_trait.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct PermGroup {
[INFO] [stderr]   |            --------- field in this struct
[INFO] [stderr] 4 |     base_permutation_length: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `BrandedVec` is never constructed
[INFO] [stderr]  --> src/branded_vec.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct BrandedVec<'id, T> {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `BrandedIndex` is never constructed
[INFO] [stderr]   --> src/branded_vec.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct BrandedIndex<'id> {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `get_index`, `get`, `get_mut`, and `push` are never used
[INFO] [stderr]   --> src/branded_vec.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl<'id, T> BrandedVec<'id, T> {
[INFO] [stderr]    | ------------------------------- associated items in this implementation
[INFO] [stderr] 19 |     pub fn new(inner: Vec<T>, guard: Guard<'id>) -> BrandedVec<'id, T> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 26 |     pub fn get_index(&self, index: usize) -> Option<BrandedIndex<'id>> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 37 |     pub fn get(&self, index: BrandedIndex<'id>) -> &T {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 41 |     pub fn get_mut<'a>(&'a mut self, index: BrandedIndex<'id>) -> &'a mut T {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 45 |     pub fn push<'a>(&'a mut self, val: T) -> BrandedIndex<'id> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `generativity-pattern-rs` (lib) generated 5 warnings (run `cargo fix --lib -p generativity-pattern-rs` to apply 1 suggestion)
[INFO] [stderr] warning: field `id` is never read
[INFO] [stderr]   --> src/branded_vec.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct BrandedIndex<'id> {
[INFO] [stderr]    |        ------------ field in this struct
[INFO] [stderr] 14 |     idx: usize,
[INFO] [stderr] 15 |     id: Id<'id>,
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `BrandedIndex` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `generativity-pattern-rs` (lib test) generated 2 warnings (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/build/generativity-pattern-rs/2cb0ad04e4ae676f/deps/generativity_pattern_rs-2cb0ad04e4ae676f)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test branded_vec::tests::branded_vec_example ... ok
[INFO] [stdout] test min_generativity::tests::test_oibits ... ok
[INFO] [stdout] test min_generativity::tests::generative_lifetime ... ok
[INFO] [stderr] 
[INFO] [stderr] thread 'mod_6_unsound_token::tests::unsound' (29) panicked at src/6-unsound_token.rs:58:77:
[INFO] [stderr] unsafe precondition(s) violated: slice::get_unchecked requires that the index is within the slice
[INFO] [stderr] 
[INFO] [stderr] This indicates a bug in the program. This Undefined Behavior check is optional, and cannot be relied on for safety.
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x58daa3f6b062 - std[840933623431fd06]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]    1:     0x58daa3f6b062 - std[840933623431fd06]::backtrace_rs::backtrace::trace_unsynchronized::<std[840933623431fd06]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]    2:     0x58daa3f6b062 - std[840933623431fd06]::sys::backtrace::_print_fmt
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]    3:     0x58daa3f6b062 - <<std[840933623431fd06]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[8f93d80df273fe75]::fmt::Display>::fmt
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]    4:     0x58daa3f7f8da - <core[8f93d80df273fe75]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]    5:     0x58daa3f7f8da - core[8f93d80df273fe75]::fmt::write
[INFO] [stderr]    6:     0x58daa3f70bf6 - std[840933623431fd06]::io::default_write_fmt::<std[840933623431fd06]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/io/mod.rs:639:11
[INFO] [stderr]    7:     0x58daa3f70bf6 - <std[840933623431fd06]::sys::stdio::unix::Stderr as std[840933623431fd06]::io::Write>::write_fmt
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]    8:     0x58daa3f4952f - <std[840933623431fd06]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]    9:     0x58daa3f4952f - std[840933623431fd06]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:292:27
[INFO] [stderr]   10:     0x58daa3f63361 - std[840933623431fd06]::panicking::default_hook
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:319:9
[INFO] [stderr]   11:     0x58daa3efec1e - <alloc[40b2bae28975ac47]::boxed::Box<dyn for<'a, 'b> core[8f93d80df273fe75]::ops::function::Fn<(&'a std[840933623431fd06]::panic::PanicHookInfo<'b>,), Output = ()> + core[8f93d80df273fe75]::marker::Sync + core[8f93d80df273fe75]::marker::Send> as core[8f93d80df273fe75]::ops::function::Fn<(&std[840933623431fd06]::panic::PanicHookInfo,)>>::call
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/alloc/src/boxed.rs:2220:9
[INFO] [stderr]   12:     0x58daa3efec1e - test[2f1252070343a163]::test_main_with_exit_callback::<test[2f1252070343a163]::test_main::{closure#0}>::{closure#0}
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:145:21
[INFO] [stderr]   13:     0x58daa3f63552 - <alloc[40b2bae28975ac47]::boxed::Box<dyn for<'a, 'b> core[8f93d80df273fe75]::ops::function::Fn<(&'a std[840933623431fd06]::panic::PanicHookInfo<'b>,), Output = ()> + core[8f93d80df273fe75]::marker::Sync + core[8f93d80df273fe75]::marker::Send> as core[8f93d80df273fe75]::ops::function::Fn<(&std[840933623431fd06]::panic::PanicHookInfo,)>>::call
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/alloc/src/boxed.rs:2220:9
[INFO] [stderr]   14:     0x58daa3f63552 - std[840933623431fd06]::panicking::panic_with_hook
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:833:13
[INFO] [stderr]   15:     0x58daa3f4961a - std[840933623431fd06]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:691:13
[INFO] [stderr]   16:     0x58daa3f40fb9 - std[840933623431fd06]::sys::backtrace::__rust_end_short_backtrace::<std[840933623431fd06]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]   17:     0x58daa3f4a43d - __rustc[5b4a0c6d8cc4a177]::rust_begin_unwind
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:689:5
[INFO] [stderr]   18:     0x58daa3f7fdcd - core[8f93d80df273fe75]::panicking::panic_nounwind_fmt::runtime
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/panicking.rs:122:22
[INFO] [stderr]   19:     0x58daa3f7fdcd - core[8f93d80df273fe75]::panicking::panic_nounwind_fmt
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/intrinsics/mod.rs:2431:9
[INFO] [stderr]   20:     0x58daa3ef0fe4 - <usize as core[8f93d80df273fe75]::slice::index::SliceIndex<[_]>>::get_unchecked::precondition_check
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ub_checks.rs:73:21
[INFO] [stderr]   21:     0x58daa3ef15d9 - <usize as core[8f93d80df273fe75]::slice::index::SliceIndex<[usize]>>::get_unchecked
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ub_checks.rs:78:17
[INFO] [stderr]   22:     0x58daa3eebb88 - <[usize]>::get_unchecked::<usize>
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/slice/mod.rs:646:26
[INFO] [stderr]   23:     0x58daa3eef39a - <generativity_pattern_rs[64f1d70c4dfb63a3]::mod_6_unsound_token::Permutation<generativity_pattern_rs[64f1d70c4dfb63a3]::mod_6_unsound_token::tests::unsound::InvariantToken>>::compose_into
[INFO] [stderr]                                at /opt/rustwide/workdir/src/6-unsound_token.rs:58:77
[INFO] [stderr]   24:     0x58daa3eef447 - <generativity_pattern_rs[64f1d70c4dfb63a3]::mod_6_unsound_token::Permutation<generativity_pattern_rs[64f1d70c4dfb63a3]::mod_6_unsound_token::tests::unsound::InvariantToken>>::compose
[INFO] [stderr]                                at /opt/rustwide/workdir/src/6-unsound_token.rs:68:14
[INFO] [stderr]   25:     0x58daa3ef068a - generativity_pattern_rs[64f1d70c4dfb63a3]::mod_6_unsound_token::tests::unsound
[INFO] [stderr]                                at /opt/rustwide/workdir/src/6-unsound_token.rs:110:20
[INFO] [stderr]   26:     0x58daa3eed147 - generativity_pattern_rs[64f1d70c4dfb63a3]::mod_6_unsound_token::tests::unsound::{closure#0}
[INFO] [stderr]                                at /opt/rustwide/workdir/src/6-unsound_token.rs:87:17
[INFO] [stderr]   27:     0x58daa3ef25e6 - <generativity_pattern_rs[64f1d70c4dfb63a3]::mod_6_unsound_token::tests::unsound::{closure#0} as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   28:     0x58daa3ef2fcb - <fn() -> core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   29:     0x58daa3ef2fcb - test[2f1252070343a163]::__rust_begin_short_backtrace::<core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>, fn() -> core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>>
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:663:18
[INFO] [stderr]   30:     0x58daa3eff82a - test[2f1252070343a163]::run_test_in_process::{closure#0}
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:686:74
[INFO] [stderr]   31:     0x58daa3eff82a - <core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<test[2f1252070343a163]::run_test_in_process::{closure#0}> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stderr]   32:     0x58daa3eff82a - std[840933623431fd06]::panicking::catch_unwind::do_call::<core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<test[2f1252070343a163]::run_test_in_process::{closure#0}>, core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>>
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:581:40
[INFO] [stderr]   33:     0x58daa3eff82a - std[840933623431fd06]::panicking::catch_unwind::<core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>, core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<test[2f1252070343a163]::run_test_in_process::{closure#0}>>
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:544:19
[INFO] [stderr]   34:     0x58daa3eff82a - std[840933623431fd06]::panic::catch_unwind::<core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<test[2f1252070343a163]::run_test_in_process::{closure#0}>, core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>>
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panic.rs:359:14
[INFO] [stderr]   35:     0x58daa3eff82a - test[2f1252070343a163]::run_test_in_process
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:686:27
[INFO] [stderr]   36:     0x58daa3eff82a - test[2f1252070343a163]::run_test::{closure#0}
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:607:43
[INFO] [stderr]   37:     0x58daa3ef9cf4 - test[2f1252070343a163]::run_test::{closure#1}
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:637:41
[INFO] [stderr]   38:     0x58daa3ef9cf4 - std[840933623431fd06]::sys::backtrace::__rust_begin_short_backtrace::<test[2f1252070343a163]::run_test::{closure#1}, ()>
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:166:18
[INFO] [stderr]   39:     0x58daa3f02322 - std[840933623431fd06]::thread::lifecycle::spawn_unchecked::<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stderr]   40:     0x58daa3f02322 - <core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<std[840933623431fd06]::thread::lifecycle::spawn_unchecked<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stderr]   41:     0x58daa3f02322 - std[840933623431fd06]::panicking::catch_unwind::do_call::<core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<std[840933623431fd06]::thread::lifecycle::spawn_unchecked<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:581:40
[INFO] [stderr]   42:     0x58daa3f02322 - std[840933623431fd06]::panicking::catch_unwind::<(), core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<std[840933623431fd06]::thread::lifecycle::spawn_unchecked<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:544:19
[INFO] [stderr]   43:     0x58daa3f02322 - std[840933623431fd06]::panic::catch_unwind::<core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe<std[840933623431fd06]::thread::lifecycle::spawn_unchecked<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panic.rs:359:14
[INFO] [stderr]   44:     0x58daa3f02322 - std[840933623431fd06]::thread::lifecycle::spawn_unchecked::<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stderr]   45:     0x58daa3f02322 - <std[840933623431fd06]::thread::lifecycle::spawn_unchecked<test[2f1252070343a163]::run_test::{closure#1}, ()>::{closure#1} as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   46:     0x58daa3f6a90f - <alloc[40b2bae28975ac47]::boxed::Box<dyn core[8f93d80df273fe75]::ops::function::FnOnce<(), Output = ()> + core[8f93d80df273fe75]::marker::Send> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/alloc/src/boxed.rs:2206:9
[INFO] [stderr]   47:     0x58daa3f6a90f - <std[840933623431fd06]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stderr]                                at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/thread/unix.rs:119:17
[INFO] [stderr]   48:     0x7d8b6104eaa4 - <unknown>
[INFO] [stderr]   49:     0x7d8b610dba64 - clone
[INFO] [stderr]   50:                0x0 - <unknown>
[INFO] [stderr] thread caused non-unwinding panic. aborting.
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/generativity-pattern-rs/2cb0ad04e4ae676f/deps/generativity_pattern_rs-2cb0ad04e4ae676f` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "6aefe99183fa97d62f6cbe7d93ad66c08033f93517fa574722791104ea818e91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aefe99183fa97d62f6cbe7d93ad66c08033f93517fa574722791104ea818e91", kill_on_drop: false }`
[INFO] [stdout] 6aefe99183fa97d62f6cbe7d93ad66c08033f93517fa574722791104ea818e91
