[INFO] cloning repository https://github.com/MonarchRyuzaki/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MonarchRyuzaki/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonarchRyuzaki%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonarchRyuzaki%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0aebb3a553ca3db7b145660d65235cc177189f45
[INFO] checking MonarchRyuzaki/learning-rust against dfbea5bc945a9d7ff017d3d4bfbd1af9295fe5b8 for pr-133502-26
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonarchRyuzaki%2Flearning-rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MonarchRyuzaki/learning-rust
[INFO] finished tweaking git repo https://github.com/MonarchRyuzaki/learning-rust
[INFO] tweaked toml for git repo https://github.com/MonarchRyuzaki/learning-rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MonarchRyuzaki/learning-rust on toolchain dfbea5bc945a9d7ff017d3d4bfbd1af9295fe5b8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dfbea5bc945a9d7ff017d3d4bfbd1af9295fe5b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MonarchRyuzaki/learning-rust 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" "+dfbea5bc945a9d7ff017d3d4bfbd1af9295fe5b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded servo_arc v0.3.0
[INFO] [stderr]   Downloaded trpl v0.3.0
[INFO] [stderr]   Downloaded scraper v0.20.0
[INFO] [stderr]   Downloaded selectors v0.25.0
[INFO] [stderr]   Downloaded phf_codegen v0.10.0
[INFO] [stderr]   Downloaded ego-tree v0.6.3
[INFO] [stderr]   Downloaded cssparser v0.31.2
[INFO] [stderr]   Downloaded rand v0.8.7
[INFO] [stderr]   Downloaded webpki-roots v1.0.8
[INFO] [stderr]   Downloaded tokio v1.53.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:1fa6594d87c8fa7b311925a7a77a16f539833322d9dfba4ce891f211db2f90b1" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] bec58dac4334752939b91fba24e51b86541441e059918b0c63cae5cbee16a680
[INFO] running `Command { std: "docker" "start" "bec58dac4334752939b91fba24e51b86541441e059918b0c63cae5cbee16a680", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bec58dac4334752939b91fba24e51b86541441e059918b0c63cae5cbee16a680", 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" "bec58dac4334752939b91fba24e51b86541441e059918b0c63cae5cbee16a680" "/opt/rustwide/cargo-home/bin/cargo" "+dfbea5bc945a9d7ff017d3d4bfbd1af9295fe5b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bec58dac4334752939b91fba24e51b86541441e059918b0c63cae5cbee16a680", 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" "bec58dac4334752939b91fba24e51b86541441e059918b0c63cae5cbee16a680" "/opt/rustwide/cargo-home/bin/cargo" "+dfbea5bc945a9d7ff017d3d4bfbd1af9295fe5b8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.46
[INFO] [stderr]    Compiling zerocopy v0.8.54
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling siphasher v1.0.3
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]     Checking stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling cc v1.2.67
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking smallvec v1.15.2
[INFO] [stderr]     Checking pin-project-lite v0.2.17
[INFO] [stderr]     Checking futures-core v0.3.32
[INFO] [stderr]     Checking itoa v1.0.18
[INFO] [stderr]     Checking bytes v1.12.1
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling rustls v0.23.42
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking futures-sink v0.3.32
[INFO] [stderr]     Checking futures-channel v0.3.32
[INFO] [stderr]     Checking socket2 v0.6.5
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]     Checking mio v1.2.2
[INFO] [stderr]     Checking once_cell v1.21.4
[INFO] [stderr]     Checking writeable v0.6.3
[INFO] [stderr]     Checking litemap v0.8.2
[INFO] [stderr]     Checking utf8_iter v1.0.4
[INFO] [stderr]     Checking futures-task v0.3.32
[INFO] [stderr]     Checking memchr v2.8.3
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]     Checking futures-io v0.3.32
[INFO] [stderr]    Compiling syn v2.0.118
[INFO] [stderr]     Checking slab v0.4.12
[INFO] [stderr]     Checking tokio v1.53.0
[INFO] [stderr]     Checking http v1.4.2
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]     Checking percent-encoding v2.3.2
[INFO] [stderr]     Checking zeroize v1.9.0
[INFO] [stderr]     Checking new_debug_unreachable v1.0.6
[INFO] [stderr]     Checking icu_properties_data v2.2.0
[INFO] [stderr]     Checking rustls-pki-types v1.15.0
[INFO] [stderr]     Checking icu_normalizer_data v2.2.0
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking lock_api v0.4.14
[INFO] [stderr]     Checking http-body v1.1.0
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking log v0.4.33
[INFO] [stderr]     Checking try-lock v0.2.5
[INFO] [stderr]     Checking tower-service v0.3.3
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]     Checking futf v0.1.5
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking form_urlencoded v1.2.2
[INFO] [stderr]     Checking tracing-core v0.1.36
[INFO] [stderr]     Checking httparse v1.10.1
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking bitflags v2.13.1
[INFO] [stderr]     Checking dtoa v1.0.11
[INFO] [stderr]     Checking subtle v2.6.1
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]     Checking dtoa-short v0.3.5
[INFO] [stderr]     Checking tendril v0.4.3
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking sync_wrapper v1.0.2
[INFO] [stderr]     Checking ipnet v2.12.0
[INFO] [stderr]     Checking tower-layer v0.3.3
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking base64 v0.22.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking webpki-roots v1.0.8
[INFO] [stderr]     Checking getrandom v0.3.4
[INFO] [stderr]     Checking servo_arc v0.3.0
[INFO] [stderr]     Checking unicode-width v0.2.2
[INFO] [stderr]     Checking ryu v1.0.23
[INFO] [stderr]     Checking getopts v0.2.24
[INFO] [stderr]     Checking http-body-util v0.1.4
[INFO] [stderr]     Checking ego-tree v0.6.3
[INFO] [stderr]     Checking object-oriented-pattern v0.1.0 (/opt/rustwide/workdir/object-oriented-pattern)
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> object-oriented-pattern/src/lib.rs:38:27
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking web-server v0.1.0 (/opt/rustwide/workdir/web-server)
[INFO] [stderr]     Checking minigrep v0.1.0 (/opt/rustwide/workdir/minigrep)
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> object-oriented-pattern/src/lib.rs:38:27
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking exercises v0.0.0 (/opt/rustwide/workdir/rustlings)
[INFO] [stderr]     Checking hello_world v0.1.0 (/opt/rustwide/workdir/hello_world)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> rustlings/exercises/01_variables/variables5.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut number = 3;
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking slice_type v0.1.0 (/opt/rustwide/workdir/slice_type)
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]  --> slice_type/src/main.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn first_word(s: &String) -> 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 `first_word_slice` is never used
[INFO] [stdout]   --> slice_type/src/main.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn first_word_slice(s: &str) -> &str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking smart_pointers v0.1.0 (/opt/rustwide/workdir/smart_pointers)
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> smart_pointers/src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let b = Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> smart_pointers/src/main.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let c = Cons(4, Rc::clone(&a));
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> smart_pointers/src/main.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     Cons(i32, Rc<List>),
[INFO] [stdout]   |     ---- ^^^  ^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 2 -     Cons(i32, Rc<List>),
[INFO] [stdout] 2 +     Cons((), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> object-oriented-pattern/src/lib.rs:38:27
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::arch::global_asm`
[INFO] [stdout]  --> rustlings/exercises/08_enums/enums3.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::arch::global_asm;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking string_cache v0.8.9
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> rustlings/exercises/01_variables/variables5.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut number = 3;
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]  --> slice_type/src/main.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn first_word(s: &String) -> 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 `first_word_slice` is never used
[INFO] [stdout]   --> slice_type/src/main.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn first_word_slice(s: &str) -> &str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking variables_functions v0.1.0 (/opt/rustwide/workdir/variables_functions)
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stdout] warning: unnecessary braces around `for` iterator expression
[INFO] [stdout]   --> variables_functions/src/main.rs:25:15
[INFO] [stdout]    |
[INFO] [stdout] 25 |     for _i in { 2..number + 1 } {
[INFO] [stdout]    |               ^^             ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 25 -     for _i in { 2..number + 1 } {
[INFO] [stdout] 25 +     for _i in 2..number + 1 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]   --> variables_functions/src/main.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mut c = 0;
[INFO] [stdout]    |                 ^ this value is reassigned later and never used
[INFO] [stdout] 25 |     for _i in { 2..number + 1 } {
[INFO] [stdout] 26 |         c = a + b;
[INFO] [stdout]    |         --------- `c` 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 rand v0.8.7
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> smart_pointers/src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let b = Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> smart_pointers/src/main.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let c = Cons(4, Rc::clone(&a));
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> smart_pointers/src/main.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     Cons(i32, Rc<List>),
[INFO] [stdout]   |     ---- ^^^  ^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 2 -     Cons(i32, Rc<List>),
[INFO] [stdout] 2 +     Cons((), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking hyper v1.10.1
[INFO] [stderr]     Checking tokio-stream v0.1.18
[INFO] [stdout] warning: unused import: `std::arch::global_asm`
[INFO] [stdout]  --> rustlings/exercises/08_enums/enums3.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::arch::global_asm;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around `for` iterator expression
[INFO] [stdout]   --> variables_functions/src/main.rs:25:15
[INFO] [stdout]    |
[INFO] [stdout] 25 |     for _i in { 2..number + 1 } {
[INFO] [stdout]    |               ^^             ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 25 -     for _i in { 2..number + 1 } {
[INFO] [stdout] 25 +     for _i in 2..number + 1 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]   --> variables_functions/src/main.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mut c = 0;
[INFO] [stdout]    |                 ^ this value is reassigned later and never used
[INFO] [stdout] 25 |     for _i in { 2..number + 1 } {
[INFO] [stdout] 26 |         c = a + b;
[INFO] [stdout]    |         --------- `c` 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 guessing_game v0.1.0 (/opt/rustwide/workdir/guessing_game)
[INFO] [stderr]     Checking rustls-webpki v0.103.13
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.3
[INFO] [stderr]    Compiling displaydoc v0.2.6
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling cssparser-macros v0.6.1
[INFO] [stderr]    Compiling html5ever v0.27.0
[INFO] [stderr]    Compiling derive_more v0.99.20
[INFO] [stderr]    Compiling zerofrom-derive v0.1.7
[INFO] [stderr]    Compiling yoke-derive v0.8.2
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling phf_codegen v0.10.0
[INFO] [stderr]    Compiling phf_codegen v0.11.3
[INFO] [stderr]    Compiling string_cache_codegen v0.5.4
[INFO] [stderr]    Compiling selectors v0.25.0
[INFO] [stderr]    Compiling phf_macros v0.11.3
[INFO] [stderr]    Compiling markup5ever v0.12.1
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]     Checking phf v0.11.3
[INFO] [stderr]     Checking zerofrom v0.1.8
[INFO] [stderr]     Checking yoke v0.8.3
[INFO] [stderr]     Checking cssparser v0.31.2
[INFO] [stderr]     Checking zerotrie v0.2.4
[INFO] [stderr]     Checking zerovec v0.11.6
[INFO] [stderr]     Checking tinystr v0.8.3
[INFO] [stderr]     Checking potential_utf v0.1.5
[INFO] [stderr]     Checking icu_collections v2.2.0
[INFO] [stderr]     Checking icu_locale_core v2.2.0
[INFO] [stderr]     Checking icu_provider v2.2.0
[INFO] [stderr]     Checking icu_properties v2.2.0
[INFO] [stderr]     Checking icu_normalizer v2.2.0
[INFO] [stderr]     Checking scraper v0.20.0
[INFO] [stderr]     Checking tower v0.5.3
[INFO] [stderr]     Checking hyper-util v0.1.20
[INFO] [stderr]     Checking futures-executor v0.3.32
[INFO] [stderr]     Checking futures v0.3.32
[INFO] [stderr]     Checking tokio-rustls v0.26.4
[INFO] [stderr]     Checking idna_adapter v1.2.2
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking url v2.5.8
[INFO] [stderr]     Checking tower-http v0.6.11
[INFO] [stderr]     Checking hyper-rustls v0.27.9
[INFO] [stderr]     Checking reqwest v0.12.28
[INFO] [stderr]     Checking trpl v0.3.0
[INFO] [stderr]     Checking hello-async v0.1.0 (/opt/rustwide/workdir/hello-async)
[INFO] [stdout] warning: unused import: `future`
[INFO] [stdout]  --> hello-async/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     future,
[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 import: `future`
[INFO] [stdout]  --> hello-async/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     future,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 59.46s
[INFO] running `Command { std: "docker" "inspect" "bec58dac4334752939b91fba24e51b86541441e059918b0c63cae5cbee16a680", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bec58dac4334752939b91fba24e51b86541441e059918b0c63cae5cbee16a680", kill_on_drop: false }`
[INFO] [stdout] bec58dac4334752939b91fba24e51b86541441e059918b0c63cae5cbee16a680
