[INFO] cloning repository https://github.com/GersiD/rustlings_GD
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GersiD/rustlings_GD" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGersiD%2Frustlings_GD", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGersiD%2Frustlings_GD'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 36326963914494d2ac1dffb30ae3a3ffa7afd3da
[INFO] testing GersiD/rustlings_GD against beta-2025-09-21 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGersiD%2Frustlings_GD" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/GersiD/rustlings_GD
[INFO] finished tweaking git repo https://github.com/GersiD/rustlings_GD
[INFO] tweaked toml for git repo https://github.com/GersiD/rustlings_GD written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/GersiD/rustlings_GD on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/GersiD/rustlings_GD 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8f14fa16091da781f692282af89f1c6d58d89a660b48579935ca9ab4db58eac
[INFO] running `Command { std: "docker" "start" "-a" "f8f14fa16091da781f692282af89f1c6d58d89a660b48579935ca9ab4db58eac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8f14fa16091da781f692282af89f1c6d58d89a660b48579935ca9ab4db58eac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8f14fa16091da781f692282af89f1c6d58d89a660b48579935ca9ab4db58eac", kill_on_drop: false }`
[INFO] [stdout] f8f14fa16091da781f692282af89f1c6d58d89a660b48579935ca9ab4db58eac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4cebc1ffdad7de0a013d19896cabf53aab11c85568fbb94da6a926a3f7553f5
[INFO] running `Command { std: "docker" "start" "-a" "e4cebc1ffdad7de0a013d19896cabf53aab11c85568fbb94da6a926a3f7553f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_derive v1.0.155
[INFO] [stderr]    Compiling serde v1.0.155
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling serde_json v1.0.94
[INFO] [stderr]    Compiling argh_shared v0.1.10
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling number_prefix v0.4.0
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling home v0.5.4
[INFO] [stderr]    Compiling net2 v0.2.38
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling filetime v0.2.20
[INFO] [stderr]    Compiling console v0.15.5
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling regex v1.7.1
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling indicatif v0.16.2
[INFO] [stderr]    Compiling argh_derive v0.1.10
[INFO] [stderr]    Compiling argh v0.1.10
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling rustlings v5.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::num::ParseIntError`
[INFO] [stdout]   --> exercises/error_handling/errors5.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::num::ParseIntError;
[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 variable: `e`
[INFO] [stdout]   --> exercises/iterators/iterators3.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         Err(e) => return (),
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vec0`
[INFO] [stdout]  --> exercises/move_semantics/move_semantics4.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let vec0: Vec<i32> = Vec::new();
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_vec0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> exercises/strings/strings3.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn trim_me(mut input: &str) -> String {
[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] [stdout] warning: path statement with no effect
[INFO] [stdout]   --> exercises/options/options3.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     y; // Fix without deleting this line.
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(path_statements)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/exercise.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[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] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.78s
[INFO] running `Command { std: "docker" "inspect" "e4cebc1ffdad7de0a013d19896cabf53aab11c85568fbb94da6a926a3f7553f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4cebc1ffdad7de0a013d19896cabf53aab11c85568fbb94da6a926a3f7553f5", kill_on_drop: false }`
[INFO] [stdout] e4cebc1ffdad7de0a013d19896cabf53aab11c85568fbb94da6a926a3f7553f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56140e3c0da752cb9cc4a39c8198f6961180c700a09365ef14387d798a442b6b
[INFO] running `Command { std: "docker" "start" "-a" "56140e3c0da752cb9cc4a39c8198f6961180c700a09365ef14387d798a442b6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling escargot v0.4.0
[INFO] [stderr]    Compiling predicates-core v1.0.5
[INFO] [stderr]    Compiling termtree v0.4.0
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stdout] warning: unused import: `std::num::ParseIntError`
[INFO] [stdout]   --> exercises/error_handling/errors5.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::num::ParseIntError;
[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 variable: `e`
[INFO] [stdout]   --> exercises/iterators/iterators3.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         Err(e) => return (),
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vec0`
[INFO] [stdout]  --> exercises/move_semantics/move_semantics4.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let vec0: Vec<i32> = Vec::new();
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_vec0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> exercises/strings/strings3.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn trim_me(mut input: &str) -> String {
[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] [stdout] warning: path statement with no effect
[INFO] [stdout]   --> exercises/options/options3.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     y; // Fix without deleting this line.
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(path_statements)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/exercise.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[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] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling predicates-tree v1.0.7
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling predicates v1.0.8
[INFO] [stderr]    Compiling assert_cmd v0.11.1
[INFO] [stderr]    Compiling rustlings v5.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::num::ParseIntError`
[INFO] [stdout]   --> exercises/error_handling/errors5.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::num::ParseIntError;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/exercise.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[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] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> exercises/iterators/iterators3.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         Err(e) => return (),
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vec0`
[INFO] [stdout]  --> exercises/move_semantics/move_semantics4.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let vec0: Vec<i32> = Vec::new();
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_vec0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> exercises/strings/strings3.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn trim_me(mut input: &str) -> String {
[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] [stdout] warning: path statement with no effect
[INFO] [stdout]   --> exercises/options/options3.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     y; // Fix without deleting this line.
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(path_statements)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.46s
[INFO] running `Command { std: "docker" "inspect" "56140e3c0da752cb9cc4a39c8198f6961180c700a09365ef14387d798a442b6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56140e3c0da752cb9cc4a39c8198f6961180c700a09365ef14387d798a442b6b", kill_on_drop: false }`
[INFO] [stdout] 56140e3c0da752cb9cc4a39c8198f6961180c700a09365ef14387d798a442b6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 21762aae52d69f092fdb7eb9e98db6753cb8c403752a014a5eb2013d0421af47
[INFO] running `Command { std: "docker" "start" "-a" "21762aae52d69f092fdb7eb9e98db6753cb8c403752a014a5eb2013d0421af47", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::num::ParseIntError`
[INFO] [stderr]   --> exercises/error_handling/errors5.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use std::num::ParseIntError;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> exercises/iterators/iterators3.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |         Err(e) => return (),
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vec0`
[INFO] [stderr]  --> exercises/move_semantics/move_semantics4.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let vec0: Vec<i32> = Vec::new();
[INFO] [stderr]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_vec0`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> exercises/strings/strings3.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn trim_me(mut input: &str) -> String {
[INFO] [stderr]   |            ----^^^^^
[INFO] [stderr]   |            |
[INFO] [stderr]   |            help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]   --> exercises/options/options3.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     y; // Fix without deleting this line.
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(path_statements)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rustlings` (lib) generated 5 warnings (run `cargo fix --lib -p rustlings` to apply 2 suggestions)
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/exercise.rs:110:20
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[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] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stderr]     |                                                     ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `rustlings` (bin "rustlings") generated 1 warning (run `cargo fix --bin "rustlings"` to apply 1 suggestion)
[INFO] [stderr] warning: `rustlings` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr] warning: `rustlings` (bin "rustlings" test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests exercises/mod.rs (/opt/rustwide/target/debug/deps/exercises-6655ab91410a4bda)
[INFO] [stdout] 
[INFO] [stdout] running 124 tests
[INFO] [stdout] test conversions::as_ref_mut::tests::different_counts ... ok
[INFO] [stdout] test conversions::as_ref_mut::tests::same_counts_using_string ... ok
[INFO] [stdout] test conversions::as_ref_mut::tests::same_counts ... ok
[INFO] [stdout] test conversions::from_into::tests::test_bad_age ... ok
[INFO] [stdout] test conversions::from_into::tests::test_bad_convert ... ok
[INFO] [stdout] test conversions::from_into::tests::test_default ... ok
[INFO] [stdout] test conversions::from_into::tests::test_good_convert ... ok
[INFO] [stdout] test conversions::from_into::tests::test_missing_comma_and_age ... ok
[INFO] [stdout] test conversions::from_into::tests::test_missing_name ... ok
[INFO] [stdout] test conversions::from_into::tests::test_missing_name_and_age ... ok
[INFO] [stdout] test conversions::from_str::tests::empty_input ... ok
[INFO] [stdout] test conversions::from_str::tests::good_input ... ok
[INFO] [stdout] test conversions::from_str::tests::missing_comma_and_age ... ok
[INFO] [stdout] test conversions::from_str::tests::missing_name ... ok
[INFO] [stdout] test conversions::from_str::tests::missing_name_and_invalid_age ... ok
[INFO] [stdout] test conversions::from_str::tests::trailing_comma_and_some_string ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_array_correct ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_array_out_of_range_negative ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_array_out_of_range_positive ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_slice_correct ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_slice_insufficient_length ... ok
[INFO] [stdout] test conversions::from_into::tests::test_trailing_comma_and_some_string ... ok
[INFO] [stdout] test conversions::from_into::tests::test_missing_age ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_slice_out_of_range_positive ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_tuple_correct ... ok
[INFO] [stdout] test conversions::from_into::tests::test_trailing_comma ... ok
[INFO] [stdout] test conversions::from_str::tests::invalid_age ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_slice_sum ... ok
[INFO] [stdout] test conversions::as_ref_mut::tests::mult_box ... ok
[INFO] [stdout] test conversions::from_into::tests::test_missing_name_and_invalid_age ... ok
[INFO] [stdout] test conversions::as_ref_mut::tests::different_counts_using_string ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_tuple_out_of_range_negative ... ok
[INFO] [stdout] test error_handling::errors2::tests::item_quantity_is_a_valid_number ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_slice_out_of_range_negative ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_tuple_sum ... ok
[INFO] [stdout] test conversions::using_as::tests::returns_proper_type_and_value ... ok
[INFO] [stdout] test enums::enums3::tests::test_match_message_call ... ok
[INFO] [stdout] test error_handling::errors1::tests::generates_nametag_text_for_a_nonempty_name ... ok
[INFO] [stdout] test conversions::from_str::tests::trailing_comma ... ok
[INFO] [stdout] test error_handling::errors1::tests::explains_why_generating_nametag_text_fails ... ok
[INFO] [stdout] test conversions::from_str::tests::missing_age ... ok
[INFO] [stdout] test error_handling::errors4::test_creation ... ok
[INFO] [stdout] test error_handling::errors6::test::test_parse_error ... ok
[INFO] [stdout] test error_handling::errors6::test::test_positive ... ok
[INFO] [stdout] test error_handling::errors6::test::test_zero ... ok
[INFO] [stdout] test error_handling::errors6::test::test_negative ... ok
[INFO] [stdout] test generics::generics2::tests::store_str_in_wrapper ... ok
[INFO] [stdout] test hashmaps::hashmaps1::tests::at_least_five_fruits ... ok
[INFO] [stdout] test hashmaps::hashmaps1::tests::at_least_three_types_of_fruits ... ok
[INFO] [stdout] test hashmaps::hashmaps2::tests::at_least_five_types_of_fruits ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_tuple_out_of_range_positive ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_slice_excess_length ... ok
[INFO] [stdout] test error_handling::errors2::tests::item_quantity_is_an_invalid_number ... ok
[INFO] [stdout] test conversions::try_from_into::tests::test_array_sum ... ok
[INFO] [stdout] test hashmaps::hashmaps2::tests::greater_than_eleven_fruits ... ok
[INFO] [stdout] test hashmaps::hashmaps2::tests::test_given_fruits_are_not_modified ... ok
[INFO] [stdout] test iterators::iterators2::tests::test_success ... ok
[INFO] [stdout] test hashmaps::hashmaps3::tests::validate_team_score_1 ... ok
[INFO] [stdout] test hashmaps::hashmaps3::tests::validate_team_score_2 ... ok
[INFO] [stdout] test iterators::iterators2::tests::test_empty ... ok
[INFO] [stdout] test iterators::iterators3::tests::test_divide_by_0 ... ok
[INFO] [stdout] test iterators::iterators3::tests::test_list_of_results ... ok
[INFO] [stdout] test iterators::iterators3::tests::test_not_divisible ... ok
[INFO] [stdout] test iterators::iterators3::tests::test_success ... ok
[INFO] [stdout] test iterators::iterators3::tests::test_result_with_list ... ok
[INFO] [stdout] test iterators::iterators4::tests::factorial_of_0 ... ok
[INFO] [stdout] test iterators::iterators3::tests::test_divide_0_by_something ... ok
[INFO] [stdout] test iterators::iterators4::tests::factorial_of_1 ... ok
[INFO] [stdout] test iterators::iterators4::tests::factorial_of_2 ... ok
[INFO] [stdout] test iterators::iterators4::tests::factorial_of_4 ... ok
[INFO] [stdout] test iterators::iterators2::tests::test_iterate_into_string ... ok
[INFO] [stdout] test iterators::iterators5::tests::count_collection_complete ... ok
[INFO] [stdout] test iterators::iterators5::tests::count_equals_for ... ok
[INFO] [stdout] test options::options1::tests::raw_value ... ok
[INFO] [stdout] test iterators::iterators5::tests::count_collection_equals_for ... ok
[INFO] [stdout] test options::options1::tests::check_icecream ... ok
[INFO] [stdout] test options::options2::tests::simple_option ... ok
[INFO] [stdout] test options::options2::tests::layered_option ... ok
[INFO] [stdout] test primitive_types::primitive_types4::slice_out_of_array ... ok
[INFO] [stdout] test generics::generics2::tests::store_u32_in_wrapper ... ok
[INFO] [stdout] test hashmaps::hashmaps3::tests::build_scores ... ok
[INFO] [stdout] test iterators::iterators5::tests::count_complete ... ok
[INFO] [stdout] test primitive_types::primitive_types6::indexing_tuple ... ok
[INFO] [stdout] test quiz1::verify_test ... ok
[INFO] [stdout] test quiz2::tests::it_works ... ok
[INFO] [stdout] test quiz3::tests::generate_alphabetic_report_card ... ok
[INFO] [stdout] test quiz3::tests::generate_numeric_report_card ... ok
[INFO] [stdout] test r#if::if1::tests::fortytwo_is_bigger_than_thirtytwo ... ok
[INFO] [stdout] test r#if::if1::tests::ten_is_bigger_than_eight ... ok
[INFO] [stdout] test r#if::if2::tests::default_to_baz ... ok
[INFO] [stdout] test r#if::if2::tests::foo_for_fizz ... ok
[INFO] [stdout] test smart_pointers::box1::tests::test_create_empty_list ... ok
[INFO] [stdout] test iterators::iterators2::tests::test_iterate_string_vec ... ok
[INFO] [stdout] test conversions::from_str::tests::missing_name_and_age ... ok
[INFO] [stdout] test r#if::if2::tests::bar_for_fuzz ... ok
[INFO] [stdout] test smart_pointers::box1::tests::test_create_non_empty_list ... ok
[INFO] [stdout] test smart_pointers::cow1::tests::owned_mutation ... ok
[INFO] [stdout] test smart_pointers::cow1::tests::reference_mutation ... ok
[INFO] [stdout] test smart_pointers::cow1::tests::owned_no_mutation ... ok
[INFO] [stdout] test strings::strings3::tests::compose_a_string ... ok
[INFO] [stdout] test smart_pointers::cow1::tests::reference_no_mutation ... ok
[INFO] [stdout] test strings::strings3::tests::replace_a_string ... ok
[INFO] [stdout] test structs::structs1::tests::classic_c_structs ... ok
[INFO] [stdout] test strings::strings3::tests::trim_a_string ... ok
[INFO] [stdout] test structs::structs2::tests::your_order ... ok
[INFO] [stdout] test structs::structs1::tests::tuple_structs ... ok
[INFO] [stdout] test structs::structs1::tests::unit_structs ... ok
[INFO] [stdout] test vecs::vecs2::tests::test_vec_loop ... ok
[INFO] [stdout] test traits::traits2::tests::is_vec_pop_eq_bar ... ok
[INFO] [stdout] test structs::structs3::tests::create_local_package ... ok
[INFO] [stdout] test structs::structs3::tests::create_international_package ... ok
[INFO] [stdout] test traits::traits4::tests::compare_license_information ... ok
[INFO] [stdout] test traits::traits3::tests::is_licensing_info_the_same ... ok
[INFO] [stdout] test tests::tests3::tests::is_false_when_odd ... ok
[INFO] [stdout] test tests::tests2::tests::you_can_assert_eq ... ok
[INFO] [stdout] test tests::tests1::tests::you_can_assert ... ok
[INFO] [stdout] test traits::traits1::tests::is_bar_bar ... ok
[INFO] [stdout] test traits::traits1::tests::is_foo_bar ... ok
[INFO] [stdout] test tests::tests3::tests::is_true_when_even ... ok
[INFO] [stdout] test vecs::vecs2::tests::test_vec_map ... ok
[INFO] [stdout] test structs::structs3::tests::calculate_transport_fees ... ok
[INFO] [stdout] test vecs::vecs1::tests::test_array_and_vec_similarity ... ok
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-2dbd5523c4e3e369)
[INFO] [stdout] test traits::traits4::tests::compare_license_information_backwards ... ok
[INFO] [stdout] test structs::structs3::tests::fail_creating_weightless_package - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 124 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test exercise::test::test_pending_state ... ok
[INFO] [stdout] test exercise::test::test_finished_exercise ... ok
[INFO] [stdout] test exercise::test::test_clean ... FAILED
[INFO] [stdout] test exercise::test::test_exercise_with_output ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- exercise::test::test_clean stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'exercise::test::test_clean' (150) panicked at src/exercise.rs:273:36:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64778b3020a2 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64778b3020a2 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64778b3020a2 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64778b3020a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64778b312ecf - core::fmt::rt::Argument::fmt::hef94184842aeafdd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64778b312ecf - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x64778b2cf221 - std::io::default_write_fmt::h69967ac0ba93195f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64778b2cf221 - std::io::Write::write_fmt::h8db9396209deaa1c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64778b2db4c2 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64778b2e00bf - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64778b2dff51 - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64778b16955e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h18383b2e29377420
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   12:     0x64778b16955e - test::test_main_with_exit_callback::{{closure}}::h272d7ef99aef06dc
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64778b2e077f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6dba6e441651a0d1
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   14:     0x64778b2e077f - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64778b2e05da - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64778b2db5f9 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64778b2c354d - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64778b31b290 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x64778b31a6b6 - core::result::unwrap_failed::hdde076be853d034f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/result.rs:1855:5
[INFO] [stdout]   20:     0x64778b14229c - core::result::Result<T,E>::unwrap::hf81f41547f62c258
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/result.rs:1226:23
[INFO] [stdout]   21:     0x64778b14229c - rustlings::exercise::test::test_clean::h6476c3b6029d7f61
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:273:36
[INFO] [stdout]   22:     0x64778b142677 - rustlings::exercise::test::test_clean::{{closure}}::hd43193efa796240e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:272:20
[INFO] [stdout]   23:     0x64778b139796 - core::ops::function::FnOnce::call_once::h9d15c79764628fbe
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64778b16931b - core::ops::function::FnOnce::call_once::h70887edf07a630ba
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x64778b16931b - test::__rust_begin_short_backtrace::h27763c4cbbdb8601
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x64778b17ef85 - test::run_test_in_process::{{closure}}::h4dc8bc6d5e3924d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x64778b17ef85 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h75905e8ffe81974f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x64778b17ef85 - std::panicking::catch_unwind::do_call::h0bc60366ba66eba5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29:     0x64778b17ef85 - std::panicking::catch_unwind::hae1ec7bf94407afa
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30:     0x64778b17ef85 - std::panic::catch_unwind::h0f4ff4773d84d3cd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x64778b17ef85 - test::run_test_in_process::h03fbc77ae48b3f10
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x64778b17ef85 - test::run_test::{{closure}}::h83476a9c453dc4d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x64778b155774 - test::run_test::{{closure}}::h515482ad1e7fe7de
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x64778b155774 - std::sys::backtrace::__rust_begin_short_backtrace::hed09f6ac5fe9d647
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x64778b15903a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h988e2cd969319888
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x64778b15903a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd70e28dc46ec20be
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x64778b15903a - std::panicking::catch_unwind::do_call::hdc29e11311eb7655
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   38:     0x64778b15903a - std::panicking::catch_unwind::h9e402d6a96fef41c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   39:     0x64778b15903a - std::panic::catch_unwind::h9213c0c54aec70e0
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x64778b15903a - std::thread::Builder::spawn_unchecked_::{{closure}}::h6262965869ed2b87
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x64778b15903a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h05c05ed02619e462
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x64778b2d667f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2044e71c41d3958a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   43:     0x64778b2d667f - std::sys::thread::unix::Thread::new::thread_start::hf277835320aa8e5a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stdout]   44:     0x7294d5909aa4 - <unknown>
[INFO] [stdout]   45:     0x7294d5996a34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'exercise::test::test_exercise_with_output' (151) panicked at src/exercise.rs:346:38:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: ExerciseOutput { stdout: "", stderr: "\u{1b}[0m\u{1b}[1m\u{1b}[38;5;9merror\u{1b}[0m\u{1b}[0m\u{1b}[1m: couldn't create a temp dir: Read-only file system (os error 30) at path \"/opt/rustwide/workdir/./rmetaVmCtCO\"\u{1b}[0m\n\n\u{1b}[0m\u{1b}[1m\u{1b}[38;5;9merror\u{1b}[0m\u{1b}[0m\u{1b}[1m: aborting due to 1 previous error\u{1b}[0m\n\n" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64778b3020a2 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64778b3020a2 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64778b3020a2 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64778b3020a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64778b312ecf - core::fmt::rt::Argument::fmt::hef94184842aeafdd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64778b312ecf - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x64778b2cf221 - std::io::default_write_fmt::h69967ac0ba93195f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64778b2cf221 - std::io::Write::write_fmt::h8db9396209deaa1c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64778b2db4c2 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64778b2e00bf - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64778b2dff51 - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64778b16955e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h18383b2e29377420
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   12:     0x64778b16955e - test::test_main_with_exit_callback::{{closure}}::h272d7ef99aef06dc
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64778b2e077f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6dba6e441651a0d1
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   14:     0x64778b2e077f - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64778b2e05da - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64778b2db5f9 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64778b2c354d - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64778b31b290 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x64778b31a6b6 - core::result::unwrap_failed::hdde076be853d034f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/result.rs:1855:5
[INFO] [stdout]   20:     0x64778b1430e8 - core::result::Result<T,E>::unwrap::he6fedbcfb64919a2
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/result.rs:1226:23
[INFO] [stdout]   21:     0x64778b1430e8 - rustlings::exercise::test::test_exercise_with_output::he0bdba8dbe661101
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:346:38
[INFO] [stdout]   22:     0x64778b143367 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h9a0c0bf0eb507db1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:339:35
[INFO] [stdout]   23:     0x64778b139696 - core::ops::function::FnOnce::call_once::h253f50234cb509b1
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64778b16931b - core::ops::function::FnOnce::call_once::h70887edf07a630ba
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x64778b16931b - test::__rust_begin_short_backtrace::h27763c4cbbdb8601
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x64778b17ef85 - test::run_test_in_process::{{closure}}::h4dc8bc6d5e3924d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x64778b17ef85 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h75905e8ffe81974f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x64778b17ef85 - std::panicking::catch_unwind::do_call::h0bc60366ba66eba5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29:     0x64778b17ef85 - std::panicking::catch_unwind::hae1ec7bf94407afa
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30:     0x64778b17ef85 - std::panic::catch_unwind::h0f4ff4773d84d3cd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x64778b17ef85 - test::run_test_in_process::h03fbc77ae48b3f10
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x64778b17ef85 - test::run_test::{{closure}}::h83476a9c453dc4d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x64778b155774 - test::run_test::{{closure}}::h515482ad1e7fe7de
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x64778b155774 - std::sys::backtrace::__rust_begin_short_backtrace::hed09f6ac5fe9d647
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x64778b15903a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h988e2cd969319888
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x64778b15903a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd70e28dc46ec20be
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x64778b15903a - std::panicking::catch_unwind::do_call::hdc29e11311eb7655
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   38:     0x64778b15903a - std::panicking::catch_unwind::h9e402d6a96fef41c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   39:     0x64778b15903a - std::panic::catch_unwind::h9213c0c54aec70e0
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x64778b15903a - std::thread::Builder::spawn_unchecked_::{{closure}}::h6262965869ed2b87
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x64778b15903a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h05c05ed02619e462
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x64778b2d667f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2044e71c41d3958a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   43:     0x64778b2d667f - std::sys::thread::unix::Thread::new::thread_start::hf277835320aa8e5a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stdout]   44:     0x7294d5909aa4 - <unknown>
[INFO] [stdout]   45:     0x7294d5996a34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     exercise::test::test_clean
[INFO] [stdout]     exercise::test::test_exercise_with_output
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.15s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rustlings`
[INFO] running `Command { std: "docker" "inspect" "21762aae52d69f092fdb7eb9e98db6753cb8c403752a014a5eb2013d0421af47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21762aae52d69f092fdb7eb9e98db6753cb8c403752a014a5eb2013d0421af47", kill_on_drop: false }`
[INFO] [stdout] 21762aae52d69f092fdb7eb9e98db6753cb8c403752a014a5eb2013d0421af47
