[INFO] cloning repository https://github.com/lieuwex/appel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lieuwex/appel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flieuwex%2Fappel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flieuwex%2Fappel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ffe497059e28e27af727a6ddb97e382c251b6d24
[INFO] testing lieuwex/appel against 1.97.0-beta.6 for beta-1.98-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flieuwex%2Fappel" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/lieuwex/appel
[INFO] finished tweaking git repo https://github.com/lieuwex/appel
[INFO] tweaked toml for git repo https://github.com/lieuwex/appel written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lieuwex/appel on toolchain 1.97.0-beta.6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.97.0-beta.6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/lieuwex/appel 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" "+1.97.0-beta.6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded az v1.3.0
[INFO] [stderr]   Downloaded rand_core v0.9.5
[INFO] [stderr]   Downloaded dyn-clonable-impl v0.9.2
[INFO] [stderr]   Downloaded anstyle-wincon v3.0.11
[INFO] [stderr]   Downloaded anstyle-query v1.1.5
[INFO] [stderr]   Downloaded once_cell_polyfill v1.70.2
[INFO] [stderr]   Downloaded is_terminal_polyfill v1.70.2
[INFO] [stderr]   Downloaded clap_lex v0.7.7
[INFO] [stderr]   Downloaded dyn-clonable v0.9.2
[INFO] [stderr]   Downloaded dtoa v1.0.11
[INFO] [stderr]   Downloaded quote v1.0.43
[INFO] [stderr]   Downloaded anstyle v1.0.13
[INFO] [stderr]   Downloaded anstream v0.6.21
[INFO] [stderr]   Downloaded clap v4.5.54
[INFO] [stderr]   Downloaded proc-macro2 v1.0.105
[INFO] [stderr]   Downloaded wit-bindgen v0.51.0
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.33
[INFO] [stderr]   Downloaded wasip2 v1.0.2+wasi-0.2.9
[INFO] [stderr]   Downloaded pom v3.4.0
[INFO] [stderr]   Downloaded clap_builder v4.5.54
[INFO] [stderr]   Downloaded itertools v0.14.0
[INFO] [stderr]   Downloaded zerocopy v0.8.33
[INFO] [stderr]   Downloaded rug v1.28.1
[INFO] [stderr]   Downloaded syn v2.0.114
[INFO] [stderr]   Downloaded bstr v1.12.1
[INFO] [stderr]   Downloaded libc v0.2.180
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.6.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 04d461680e2e6e9a2cc4d442cda6cfb4777f2093b5d8689e9fc5026894dc3756
[INFO] running `Command { std: "docker" "start" "04d461680e2e6e9a2cc4d442cda6cfb4777f2093b5d8689e9fc5026894dc3756", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04d461680e2e6e9a2cc4d442cda6cfb4777f2093b5d8689e9fc5026894dc3756", 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" "04d461680e2e6e9a2cc4d442cda6cfb4777f2093b5d8689e9fc5026894dc3756" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04d461680e2e6e9a2cc4d442cda6cfb4777f2093b5d8689e9fc5026894dc3756", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "04d461680e2e6e9a2cc4d442cda6cfb4777f2093b5d8689e9fc5026894dc3756" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling proc-macro2 v1.0.105
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]    Compiling zerocopy v0.8.33
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.6.8
[INFO] [stderr]    Compiling anstyle-query v1.1.5
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.2
[INFO] [stderr]    Compiling anstyle v1.0.13
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling clap_lex v0.7.7
[INFO] [stderr]    Compiling rug v1.28.1
[INFO] [stderr]    Compiling dyn-clone v1.0.20
[INFO] [stderr]    Compiling az v1.3.0
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling dtoa v1.0.11
[INFO] [stderr]    Compiling anstream v0.6.21
[INFO] [stderr]    Compiling clap_builder v4.5.54
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling bstr v1.12.1
[INFO] [stderr]    Compiling rand_core v0.9.5
[INFO] [stderr]    Compiling pom v3.4.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling clap v4.5.54
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling dyn-clonable-impl v0.9.2
[INFO] [stderr]    Compiling dyn-clonable v0.9.2
[INFO] [stderr]    Compiling appel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/executor/chain.rs:118:18
[INFO] [stdout]     |
[INFO] [stdout] 118 |                 .intersperse(Ok(" ".to_string()))
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `scalar` is never used
[INFO] [stdout]   --> src/executor/chain.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl IterShape {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn scalar(&self) -> Option<Ratio> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `scalar`, `get_at`, `take_at`, `get_multiple`, and `iter_mut` are never used
[INFO] [stdout]   --> src/executor/matrix.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl Matrix {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn scalar(&self) -> Option<&Ratio> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn get_at(&self, i: usize) -> Option<&Ratio> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn take_at(self, i: usize) -> Option<Ratio> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn get_multiple(&self, indices: &[usize]) -> Option<Vec<Ratio>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<Ratio> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/executor/matrix.rs:66:17
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn iter(&self) -> std::slice::Iter<Ratio> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided 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] 66 |     pub fn iter(&self) -> std::slice::Iter<'_, Ratio> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/executor/matrix.rs:69:21
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<Ratio> {
[INFO] [stdout]    |                     ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<'_, Ratio> {
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 44s
[INFO] running `Command { std: "docker" "inspect" "04d461680e2e6e9a2cc4d442cda6cfb4777f2093b5d8689e9fc5026894dc3756", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "04d461680e2e6e9a2cc4d442cda6cfb4777f2093b5d8689e9fc5026894dc3756" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling appel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/executor/chain.rs:118:18
[INFO] [stdout]     |
[INFO] [stdout] 118 |                 .intersperse(Ok(" ".to_string()))
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `scalar` is never used
[INFO] [stdout]   --> src/executor/chain.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl IterShape {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn scalar(&self) -> Option<Ratio> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `scalar`, `get_at`, `take_at`, `get_multiple`, and `iter_mut` are never used
[INFO] [stdout]   --> src/executor/matrix.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl Matrix {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn scalar(&self) -> Option<&Ratio> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn get_at(&self, i: usize) -> Option<&Ratio> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn take_at(self, i: usize) -> Option<Ratio> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn get_multiple(&self, indices: &[usize]) -> Option<Vec<Ratio>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<Ratio> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/executor/matrix.rs:66:17
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn iter(&self) -> std::slice::Iter<Ratio> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided 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] 66 |     pub fn iter(&self) -> std::slice::Iter<'_, Ratio> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/executor/matrix.rs:69:21
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<Ratio> {
[INFO] [stdout]    |                     ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<'_, Ratio> {
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "04d461680e2e6e9a2cc4d442cda6cfb4777f2093b5d8689e9fc5026894dc3756", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "04d461680e2e6e9a2cc4d442cda6cfb4777f2093b5d8689e9fc5026894dc3756" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/executor/chain.rs:118:18
[INFO] [stderr]     |
[INFO] [stderr] 118 |                 .intersperse(Ok(" ".to_string()))
[INFO] [stderr]     |                  ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `scalar` is never used
[INFO] [stderr]   --> src/executor/chain.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 27 | impl IterShape {
[INFO] [stderr]    | -------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 32 |     pub fn scalar(&self) -> Option<Ratio> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `scalar`, `get_at`, `take_at`, `get_multiple`, and `iter_mut` are never used
[INFO] [stderr]   --> src/executor/matrix.rs:47:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | impl Matrix {
[INFO] [stderr]    | ----------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 47 |     pub fn scalar(&self) -> Option<&Ratio> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 55 |     pub fn get_at(&self, i: usize) -> Option<&Ratio> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 58 |     pub fn take_at(self, i: usize) -> Option<Ratio> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 62 |     pub fn get_multiple(&self, indices: &[usize]) -> Option<Vec<Ratio>> {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<Ratio> {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/executor/matrix.rs:66:17
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn iter(&self) -> std::slice::Iter<Ratio> {
[INFO] [stderr]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn iter(&self) -> std::slice::Iter<'_, Ratio> {
[INFO] [stderr]    |                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/executor/matrix.rs:69:21
[INFO] [stderr]    |
[INFO] [stderr] 69 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<Ratio> {
[INFO] [stderr]    |                     ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 69 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<'_, Ratio> {
[INFO] [stderr]    |                                                       +++
[INFO] [stderr] 
[INFO] [stderr] warning: `appel` (bin "appel" test) generated 5 warnings (run `cargo fix --bin "appel" -p appel --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/appel-c3aab643e2549d99)
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test executor::executor::tests::test_fold ... ok
[INFO] [stdout] test parser::tests::test_map ... ok
[INFO] [stdout] test parser::tests::test_let ... ok
[INFO] [stdout] test parser::tests::test_num ... ok
[INFO] [stdout] test parser::tests::test_var ... ok
[INFO] [stdout] test parser::tests::test_fn ... ok
[INFO] [stdout] test parser::tests::test_binop ... ok
[INFO] [stdout] test parser::tests::test_vec ... ok
[INFO] [stdout] test parser::tests::test_lambda ... ok
[INFO] [stdout] test executor::executor::tests::test_chunker_error_propagation ... ok
[INFO] [stdout] test executor::executor::tests::test_lambda_call ... ok
[INFO] [stdout] test parser::tests::test_paren ... ok
[INFO] [stdout] test executor::executor::tests::test_hof_lambda_call ... ok
[INFO] [stdout] test executor::executor::tests::test_map ... ok
[INFO] [stdout] test executor::executor::tests::test_prelude_avg ... ok
[INFO] [stdout] test executor::executor::tests::test_parse_prelude ... ok
[INFO] [stdout] test executor::executor::tests::test_recursive_clusterfuck ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.38s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "04d461680e2e6e9a2cc4d442cda6cfb4777f2093b5d8689e9fc5026894dc3756", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04d461680e2e6e9a2cc4d442cda6cfb4777f2093b5d8689e9fc5026894dc3756", kill_on_drop: false }`
[INFO] [stdout] 04d461680e2e6e9a2cc4d442cda6cfb4777f2093b5d8689e9fc5026894dc3756
