[INFO] cloning repository https://github.com/larashion/rust-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/larashion/rust-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flarashion%2Frust-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flarashion%2Frust-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e99f696720acafa6ddde297712e8d92f5446e9e6
[INFO] testing larashion/rust-learning against beta-2026-01-20 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flarashion%2Frust-learning" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/larashion/rust-learning
[INFO] finished tweaking git repo https://github.com/larashion/rust-learning
[INFO] tweaked toml for git repo https://github.com/larashion/rust-learning written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/larashion/rust-learning on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/larashion/rust-learning 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-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 408f1c6eb160ca09659b463cb40dc41bd39c470b114704f894ab5c3f8d73fdbf
[INFO] running `Command { std: "docker" "start" "-a" "408f1c6eb160ca09659b463cb40dc41bd39c470b114704f894ab5c3f8d73fdbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "408f1c6eb160ca09659b463cb40dc41bd39c470b114704f894ab5c3f8d73fdbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "408f1c6eb160ca09659b463cb40dc41bd39c470b114704f894ab5c3f8d73fdbf", kill_on_drop: false }`
[INFO] [stdout] 408f1c6eb160ca09659b463cb40dc41bd39c470b114704f894ab5c3f8d73fdbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b28700c1a71965913af54ec4c6e94871a912cee18784c383e74b112d0feef22
[INFO] running `Command { std: "docker" "start" "-a" "4b28700c1a71965913af54ec4c6e94871a912cee18784c383e74b112d0feef22", kill_on_drop: false }`
[INFO] [stderr] warning: output filename collision at /opt/rustwide/target/debug/basics
[INFO] [stderr]   |
[INFO] [stderr]   = note: the bin target `basics` in package `learning-raw-pointers v0.1.0 (/opt/rustwide/workdir/raw_pointers)` has the same output filename as the bin target `basics` in package `learning-lifetimes v0.1.0 (/opt/rustwide/workdir/lifetimes)`
[INFO] [stderr]   = note: this may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>
[INFO] [stderr]   = help: consider changing their names to be unique or compiling them separately
[INFO] [stderr] warning: output filename collision at /opt/rustwide/target/debug/basics.dwp
[INFO] [stderr]   |
[INFO] [stderr]   = note: the bin target `basics` in package `learning-raw-pointers v0.1.0 (/opt/rustwide/workdir/raw_pointers)` has the same output filename as the bin target `basics` in package `learning-lifetimes v0.1.0 (/opt/rustwide/workdir/lifetimes)`
[INFO] [stderr]   = note: this may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>
[INFO] [stderr]   = help: consider changing their names to be unique or compiling them separately
[INFO] [stderr] warning: output filename collision at /opt/rustwide/target/debug/basics
[INFO] [stderr]   |
[INFO] [stderr]   = note: the bin target `basics` in package `learning-traits v0.1.0 (/opt/rustwide/workdir/traits)` has the same output filename as the bin target `basics` in package `learning-raw-pointers v0.1.0 (/opt/rustwide/workdir/raw_pointers)`
[INFO] [stderr]   = note: this may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>
[INFO] [stderr]   = help: consider changing their names to be unique or compiling them separately
[INFO] [stderr] warning: output filename collision at /opt/rustwide/target/debug/basics.dwp
[INFO] [stderr]   |
[INFO] [stderr]   = note: the bin target `basics` in package `learning-traits v0.1.0 (/opt/rustwide/workdir/traits)` has the same output filename as the bin target `basics` in package `learning-raw-pointers v0.1.0 (/opt/rustwide/workdir/raw_pointers)`
[INFO] [stderr]   = note: this may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>
[INFO] [stderr]   = help: consider changing their names to be unique or compiling them separately
[INFO] [stderr]    Compiling proc-macro2 v1.0.105
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling bytes v1.11.0
[INFO] [stderr]    Compiling itoa v1.0.17
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]    Compiling zerocopy v0.8.33
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling zmij v1.0.14
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling find-msvc-tools v0.1.7
[INFO] [stderr]    Compiling cc v1.2.52
[INFO] [stderr]    Compiling http v1.4.0
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling pkg-config v0.3.32
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling socket2 v0.6.1
[INFO] [stderr]    Compiling mio v1.1.1
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling openssl-sys v0.9.111
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling bitflags v2.10.0
[INFO] [stderr]    Compiling hashbrown v0.16.1
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling try-lock v0.2.5
[INFO] [stderr]    Compiling openssl v0.10.75
[INFO] [stderr]    Compiling want v0.3.1
[INFO] [stderr]    Compiling rand_core v0.9.5
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling data-encoding v2.10.0
[INFO] [stderr]    Compiling time-core v0.1.7
[INFO] [stderr]    Compiling indexmap v2.13.0
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling unicase v2.9.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling simd-adler32 v0.3.8
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling deranged v0.5.5
[INFO] [stderr]    Compiling time-macros v0.2.25
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling cookie v0.18.1
[INFO] [stderr]    Compiling openssl-probe v0.1.6
[INFO] [stderr]    Compiling ipnet v2.11.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling flate2 v1.1.8
[INFO] [stderr]    Compiling encoding_rs v0.8.35
[INFO] [stderr]    Compiling compression-core v0.4.31
[INFO] [stderr]    Compiling litrs v1.0.0
[INFO] [stderr]    Compiling ryu v1.0.22
[INFO] [stderr]    Compiling psl-types v2.0.11
[INFO] [stderr]    Compiling compression-codecs v0.4.36
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]    Compiling iri-string v0.7.10
[INFO] [stderr]    Compiling time v0.3.45
[INFO] [stderr]    Compiling rustls-pki-types v1.13.2
[INFO] [stderr]    Compiling document-features v0.2.12
[INFO] [stderr]    Compiling serde_path_to_error v0.1.20
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling cargo-mastery v0.1.0 (/opt/rustwide/workdir/cargo_mastery)
[INFO] [stdout] warning: function `internal_adder` is never used
[INFO] [stdout]   --> cargo_mastery/src/lib.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn internal_adder(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]   --> cargo_mastery/src/kitchen.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Breakfast {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout]  9 |     pub toast: String,      // 公有字段：外部可以读写
[INFO] [stdout] 10 |     seasonal_fruit: String, // 私有字段：外部无法直接访问（必须通过关联函数构造）
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `help` is never used
[INFO] [stdout]   --> cargo_mastery/src/lib.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn help() {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling learning-lifetimes v0.1.0 (/opt/rustwide/workdir/lifetimes)
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling learning-file-io v0.1.0 (/opt/rustwide/workdir/file_io)
[INFO] [stdout] warning: function `example1_basic_walkdir` is never used
[INFO] [stdout]   --> file_io/src/bin/walkdir.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn example1_basic_walkdir() {
[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 `is_dir` and `path` are never used
[INFO] [stdout]    --> file_io/src/bin/walkdir.rs:93:8
[INFO] [stdout]     |
[INFO] [stdout]  88 | impl WalkEntry {
[INFO] [stdout]     | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  93 |     fn is_dir(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     fn path(&self) -> &std::path::Path {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling learning-raw-pointers v0.1.0 (/opt/rustwide/workdir/raw_pointers)
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.1
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling zerovec-derive v0.11.2
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tokio v1.49.0
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]    Compiling zerofrom v0.1.6
[INFO] [stderr]    Compiling yoke v0.8.1
[INFO] [stderr]    Compiling zerovec v0.11.5
[INFO] [stderr]    Compiling zerotrie v0.2.3
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling tungstenite v0.24.0
[INFO] [stderr]    Compiling learning-error-handling v0.1.0 (/opt/rustwide/workdir/error_handling)
[INFO] [stderr]    Compiling tinystr v0.8.2
[INFO] [stderr]    Compiling potential_utf v0.1.4
[INFO] [stderr]    Compiling icu_locale_core v2.1.1
[INFO] [stderr]    Compiling icu_collections v2.1.1
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling icu_provider v2.1.1
[INFO] [stderr]    Compiling axum-core v0.4.5
[INFO] [stderr]    Compiling multer v3.1.0
[INFO] [stderr]    Compiling icu_properties v2.1.2
[INFO] [stderr]    Compiling icu_normalizer v2.1.1
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling learning-smart-pointers v0.1.0 (/opt/rustwide/workdir/smart_pointers)
[INFO] [stdout] warning: trait `Printable` is never used
[INFO] [stdout]    --> smart_pointers/src/bin/dyn.rs:136:11
[INFO] [stdout]     |
[INFO] [stdout] 136 |     trait Printable {
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Display` is never used
[INFO] [stdout]    --> smart_pointers/src/bin/dyn.rs:141:11
[INFO] [stdout]     |
[INFO] [stdout] 141 |     trait Display {
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Cloneable` is never used
[INFO] [stdout]    --> smart_pointers/src/bin/dyn.rs:146:11
[INFO] [stdout]     |
[INFO] [stdout] 146 |     trait Cloneable {
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `GenericMethod` is never used
[INFO] [stdout]    --> smart_pointers/src/bin/dyn.rs:151:11
[INFO] [stdout]     |
[INFO] [stdout] 151 |     trait GenericMethod {
[INFO] [stdout]     |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]    --> smart_pointers/src/bin/dyn.rs:593:5
[INFO] [stdout]     |
[INFO] [stdout] 592 | struct Data {
[INFO] [stdout]     |        ---- field in this struct
[INFO] [stdout] 593 |     value: i32,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Data` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> smart_pointers/src/bin/rc.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Data {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 21 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Data` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]    --> smart_pointers/src/bin/rc.rs:152:5
[INFO] [stdout]     |
[INFO] [stdout] 151 | struct CycleNode {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 152 |     value: i32,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]    --> smart_pointers/src/bin/weak.rs:107:5
[INFO] [stdout]     |
[INFO] [stdout] 106 | struct CycleNode {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 107 |     value: i32,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> smart_pointers/src/bin/box.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 |     Cons(i32, Box<List>),
[INFO] [stdout]    |     ---- ^^^  ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 39 -     Cons(i32, Box<List>),
[INFO] [stdout] 39 +     Cons((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling idna_adapter v1.2.1
[INFO] [stderr]    Compiling idna v1.1.0
[INFO] [stderr]    Compiling url v2.5.8
[INFO] [stderr]    Compiling publicsuffix v2.3.0
[INFO] [stderr]    Compiling tokio-util v0.7.18
[INFO] [stderr]    Compiling tower v0.5.3
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling tokio-tungstenite v0.24.0
[INFO] [stderr]    Compiling async-compression v0.4.37
[INFO] [stderr]    Compiling tokio-stream v0.1.18
[INFO] [stderr]    Compiling cookie_store v0.22.0
[INFO] [stderr]    Compiling h2 v0.4.13
[INFO] [stderr]    Compiling tower-http v0.6.8
[INFO] [stderr]    Compiling tungstenite v0.20.1
[INFO] [stderr]    Compiling tower-http v0.5.2
[INFO] [stderr]    Compiling tokio-tungstenite v0.20.1
[INFO] [stderr]    Compiling learning-traits v0.1.0 (/opt/rustwide/workdir/traits)
[INFO] [stderr]    Compiling learning-concurrency v0.1.0 (/opt/rustwide/workdir/concurrency)
[INFO] [stdout] warning: trait `MyDisplay` is never used
[INFO] [stdout]   --> traits/src/bin/generics.rs:49:7
[INFO] [stdout]    |
[INFO] [stdout] 49 | trait MyDisplay { fn display(&self); }
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MyDebug` is never used
[INFO] [stdout]   --> traits/src/bin/generics.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 | trait MyDebug { fn debug(&self); }
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `clone` are never used
[INFO] [stdout]    --> concurrency/src/bin/atomic.rs:315:8
[INFO] [stdout]     |
[INFO] [stdout] 314 | impl<T> ArcLike<T> {
[INFO] [stdout]     | ------------------ associated items in this implementation
[INFO] [stdout] 315 |     fn new(data: T) -> ArcLike<T> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 322 |     fn clone(&self) -> ArcLike<T> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `increment` is never used
[INFO] [stdout]    --> concurrency/src/bin/mutex.rs:227:8
[INFO] [stdout]     |
[INFO] [stdout] 220 | impl ThreadSafeCounter {
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 227 |     fn increment(&self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get` is never used
[INFO] [stdout]    --> concurrency/src/bin/rwlock.rs:355:8
[INFO] [stdout]     |
[INFO] [stdout] 348 | impl Cache {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 355 |     fn get(&self, key: &str) -> Option<String> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hyper v1.8.1
[INFO] [stderr]    Compiling hyper-util v0.1.19
[INFO] [stderr]    Compiling hyper-tls v0.6.0
[INFO] [stderr]    Compiling axum v0.7.9
[INFO] [stderr]    Compiling reqwest v0.12.28
[INFO] [stderr]    Compiling learning-networking v0.1.0 (/opt/rustwide/workdir/networking)
[INFO] [stdout] warning: function `retry_with_backoff` is never used
[INFO] [stdout]    --> networking/src/bin/async_runtime.rs:355:10
[INFO] [stdout]     |
[INFO] [stdout] 355 | async fn retry_with_backoff<F, T, E>(
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures_util::SinkExt`
[INFO] [stdout]   --> networking/src/bin/http_client.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use futures_util::SinkExt;
[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: `std::io::Write`
[INFO] [stdout]   --> networking/src/bin/http_server.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use std::io::Write;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `password` is never read
[INFO] [stdout]    --> networking/src/bin/http_server.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 133 | struct LoginForm {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 134 |     username: String,
[INFO] [stdout] 135 |     password: String,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 12s
[INFO] running `Command { std: "docker" "inspect" "4b28700c1a71965913af54ec4c6e94871a912cee18784c383e74b112d0feef22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b28700c1a71965913af54ec4c6e94871a912cee18784c383e74b112d0feef22", kill_on_drop: false }`
[INFO] [stdout] 4b28700c1a71965913af54ec4c6e94871a912cee18784c383e74b112d0feef22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39273ba2010d8028a36893497f11622247c43b44d689d9bb82633c4196538fcc
[INFO] running `Command { std: "docker" "start" "-a" "39273ba2010d8028a36893497f11622247c43b44d689d9bb82633c4196538fcc", kill_on_drop: false }`
[INFO] [stdout] warning: function `internal_adder` is never used
[INFO] [stdout]   --> cargo_mastery/src/lib.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn internal_adder(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]   --> cargo_mastery/src/kitchen.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Breakfast {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout]  9 |     pub toast: String,      // 公有字段：外部可以读写
[INFO] [stdout] 10 |     seasonal_fruit: String, // 私有字段：外部无法直接访问（必须通过关联函数构造）
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `help` is never used
[INFO] [stdout]   --> cargo_mastery/src/lib.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn help() {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling cargo-mastery v0.1.0 (/opt/rustwide/workdir/cargo_mastery)
[INFO] [stderr]    Compiling learning-file-io v0.1.0 (/opt/rustwide/workdir/file_io)
[INFO] [stderr]    Compiling learning-networking v0.1.0 (/opt/rustwide/workdir/networking)
[INFO] [stderr]    Compiling learning-error-handling v0.1.0 (/opt/rustwide/workdir/error_handling)
[INFO] [stdout] warning: unused import: `futures_util::SinkExt`
[INFO] [stdout]   --> networking/src/bin/http_client.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use futures_util::SinkExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling learning-traits v0.1.0 (/opt/rustwide/workdir/traits)
[INFO] [stdout] warning: function `example1_basic_walkdir` is never used
[INFO] [stdout]   --> file_io/src/bin/walkdir.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn example1_basic_walkdir() {
[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 `is_dir` and `path` are never used
[INFO] [stdout]    --> file_io/src/bin/walkdir.rs:93:8
[INFO] [stdout]     |
[INFO] [stdout]  88 | impl WalkEntry {
[INFO] [stdout]     | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  93 |     fn is_dir(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     fn path(&self) -> &std::path::Path {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MyDisplay` is never used
[INFO] [stdout]   --> traits/src/bin/generics.rs:49:7
[INFO] [stdout]    |
[INFO] [stdout] 49 | trait MyDisplay { fn display(&self); }
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MyDebug` is never used
[INFO] [stdout]   --> traits/src/bin/generics.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 | trait MyDebug { fn debug(&self); }
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `retry_with_backoff` is never used
[INFO] [stdout]    --> networking/src/bin/async_runtime.rs:355:10
[INFO] [stdout]     |
[INFO] [stdout] 355 | async fn retry_with_backoff<F, T, E>(
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]   --> cargo_mastery/src/kitchen.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Breakfast {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout]  9 |     pub toast: String,      // 公有字段：外部可以读写
[INFO] [stdout] 10 |     seasonal_fruit: String, // 私有字段：外部无法直接访问（必须通过关联函数构造）
[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 `help` is never used
[INFO] [stdout]   --> cargo_mastery/src/lib.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn help() {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling learning-smart-pointers v0.1.0 (/opt/rustwide/workdir/smart_pointers)
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]   --> networking/src/bin/http_server.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use std::io::Write;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling learning-concurrency v0.1.0 (/opt/rustwide/workdir/concurrency)
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> smart_pointers/src/bin/rc.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Data {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 21 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Data` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]    --> smart_pointers/src/bin/rc.rs:152:5
[INFO] [stdout]     |
[INFO] [stdout] 151 | struct CycleNode {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 152 |     value: i32,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Printable` is never used
[INFO] [stdout]    --> smart_pointers/src/bin/dyn.rs:136:11
[INFO] [stdout]     |
[INFO] [stdout] 136 |     trait Printable {
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Display` is never used
[INFO] [stdout]    --> smart_pointers/src/bin/dyn.rs:141:11
[INFO] [stdout]     |
[INFO] [stdout] 141 |     trait Display {
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Cloneable` is never used
[INFO] [stdout]    --> smart_pointers/src/bin/dyn.rs:146:11
[INFO] [stdout]     |
[INFO] [stdout] 146 |     trait Cloneable {
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `GenericMethod` is never used
[INFO] [stdout]    --> smart_pointers/src/bin/dyn.rs:151:11
[INFO] [stdout]     |
[INFO] [stdout] 151 |     trait GenericMethod {
[INFO] [stdout]     |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]    --> smart_pointers/src/bin/dyn.rs:593:5
[INFO] [stdout]     |
[INFO] [stdout] 592 | struct Data {
[INFO] [stdout]     |        ---- field in this struct
[INFO] [stdout] 593 |     value: i32,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Data` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> smart_pointers/src/bin/box.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 |     Cons(i32, Box<List>),
[INFO] [stdout]    |     ---- ^^^  ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 39 -     Cons(i32, Box<List>),
[INFO] [stdout] 39 +     Cons((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]    --> smart_pointers/src/bin/weak.rs:107:5
[INFO] [stdout]     |
[INFO] [stdout] 106 | struct CycleNode {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 107 |     value: i32,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `password` is never read
[INFO] [stdout]    --> networking/src/bin/http_server.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 133 | struct LoginForm {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 134 |     username: String,
[INFO] [stdout] 135 |     password: String,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling learning-lifetimes v0.1.0 (/opt/rustwide/workdir/lifetimes)
[INFO] [stderr]    Compiling learning-raw-pointers v0.1.0 (/opt/rustwide/workdir/raw_pointers)
[INFO] [stdout] warning: method `increment` is never used
[INFO] [stdout]    --> concurrency/src/bin/mutex.rs:227:8
[INFO] [stdout]     |
[INFO] [stdout] 220 | impl ThreadSafeCounter {
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 227 |     fn increment(&self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get` is never used
[INFO] [stdout]    --> concurrency/src/bin/rwlock.rs:355:8
[INFO] [stdout]     |
[INFO] [stdout] 348 | impl Cache {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 355 |     fn get(&self, key: &str) -> Option<String> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `clone` are never used
[INFO] [stdout]    --> concurrency/src/bin/atomic.rs:315:8
[INFO] [stdout]     |
[INFO] [stdout] 314 | impl<T> ArcLike<T> {
[INFO] [stdout]     | ------------------ associated items in this implementation
[INFO] [stdout] 315 |     fn new(data: T) -> ArcLike<T> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 322 |     fn clone(&self) -> ArcLike<T> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.35s
[INFO] running `Command { std: "docker" "inspect" "39273ba2010d8028a36893497f11622247c43b44d689d9bb82633c4196538fcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39273ba2010d8028a36893497f11622247c43b44d689d9bb82633c4196538fcc", kill_on_drop: false }`
[INFO] [stdout] 39273ba2010d8028a36893497f11622247c43b44d689d9bb82633c4196538fcc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7080bf8cae9bc025297db6f03e48781cd8a081622e82156eec18eef31246a05d
[INFO] running `Command { std: "docker" "start" "-a" "7080bf8cae9bc025297db6f03e48781cd8a081622e82156eec18eef31246a05d", kill_on_drop: false }`
[INFO] [stderr] warning: function `internal_adder` is never used
[INFO] [stderr]   --> cargo_mastery/src/lib.rs:44:4
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn internal_adder(a: i32, b: i32) -> i32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `seasonal_fruit` is never read
[INFO] [stderr]   --> cargo_mastery/src/kitchen.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr]  8 | pub struct Breakfast {
[INFO] [stderr]    |            --------- field in this struct
[INFO] [stderr]  9 |     pub toast: String,      // 公有字段：外部可以读写
[INFO] [stderr] 10 |     seasonal_fruit: String, // 私有字段：外部无法直接访问（必须通过关联函数构造）
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `help` is never used
[INFO] [stderr]   --> cargo_mastery/src/lib.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn help() {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `cargo-mastery` (lib) generated 3 warnings
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]   --> networking/src/bin/http_server.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 | use std::io::Write;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `password` is never read
[INFO] [stderr]    --> networking/src/bin/http_server.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 133 | struct LoginForm {
[INFO] [stderr]     |        --------- field in this struct
[INFO] [stderr] 134 |     username: String,
[INFO] [stderr] 135 |     password: String,
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `retry_with_backoff` is never used
[INFO] [stderr]    --> networking/src/bin/async_runtime.rs:355:10
[INFO] [stderr]     |
[INFO] [stderr] 355 | async fn retry_with_backoff<F, T, E>(
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures_util::SinkExt`
[INFO] [stderr]   --> networking/src/bin/http_client.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use futures_util::SinkExt;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `learning-networking` (bin "http_server" test) generated 2 warnings
[INFO] [stderr] warning: `learning-networking` (bin "async_runtime" test) generated 1 warning
[INFO] [stderr] warning: `learning-networking` (bin "http_client" test) generated 1 warning
[INFO] [stderr] warning: function `example1_basic_walkdir` is never used
[INFO] [stderr]   --> file_io/src/bin/walkdir.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn example1_basic_walkdir() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `is_dir` and `path` are never used
[INFO] [stderr]    --> file_io/src/bin/walkdir.rs:93:8
[INFO] [stderr]     |
[INFO] [stderr]  88 | impl WalkEntry {
[INFO] [stderr]     | -------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr]  93 |     fn is_dir(&self) -> bool {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 102 |     fn path(&self) -> &std::path::Path {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `seasonal_fruit` is never read
[INFO] [stderr]   --> cargo_mastery/src/kitchen.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr]  8 | pub struct Breakfast {
[INFO] [stderr]    |            --------- field in this struct
[INFO] [stderr]  9 |     pub toast: String,      // 公有字段：外部可以读写
[INFO] [stderr] 10 |     seasonal_fruit: String, // 私有字段：外部无法直接访问（必须通过关联函数构造）
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `MyDisplay` is never used
[INFO] [stderr]   --> traits/src/bin/generics.rs:49:7
[INFO] [stderr]    |
[INFO] [stderr] 49 | trait MyDisplay { fn display(&self); }
[INFO] [stderr]    |       ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `MyDebug` is never used
[INFO] [stderr]   --> traits/src/bin/generics.rs:50:7
[INFO] [stderr]    |
[INFO] [stderr] 50 | trait MyDebug { fn debug(&self); }
[INFO] [stderr]    |       ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `learning-file-io` (bin "walkdir" test) generated 2 warnings
[INFO] [stderr] warning: `cargo-mastery` (lib test) generated 2 warnings (1 duplicate)
[INFO] [stderr] warning: `learning-traits` (bin "generics" test) generated 2 warnings
[INFO] [stderr] warning: trait `Printable` is never used
[INFO] [stderr]    --> smart_pointers/src/bin/dyn.rs:136:11
[INFO] [stderr]     |
[INFO] [stderr] 136 |     trait Printable {
[INFO] [stderr]     |           ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Display` is never used
[INFO] [stderr]    --> smart_pointers/src/bin/dyn.rs:141:11
[INFO] [stderr]     |
[INFO] [stderr] 141 |     trait Display {
[INFO] [stderr]     |           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Cloneable` is never used
[INFO] [stderr]    --> smart_pointers/src/bin/dyn.rs:146:11
[INFO] [stderr]     |
[INFO] [stderr] 146 |     trait Cloneable {
[INFO] [stderr]     |           ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `GenericMethod` is never used
[INFO] [stderr]    --> smart_pointers/src/bin/dyn.rs:151:11
[INFO] [stderr]     |
[INFO] [stderr] 151 |     trait GenericMethod {
[INFO] [stderr]     |           ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `value` is never read
[INFO] [stderr]    --> smart_pointers/src/bin/dyn.rs:593:5
[INFO] [stderr]     |
[INFO] [stderr] 592 | struct Data {
[INFO] [stderr]     |        ---- field in this struct
[INFO] [stderr] 593 |     value: i32,
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Data` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: field `value` is never read
[INFO] [stderr]    --> smart_pointers/src/bin/weak.rs:107:5
[INFO] [stderr]     |
[INFO] [stderr] 106 | struct CycleNode {
[INFO] [stderr]     |        --------- field in this struct
[INFO] [stderr] 107 |     value: i32,
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `0` and `1` are never read
[INFO] [stderr]   --> smart_pointers/src/bin/box.rs:39:10
[INFO] [stderr]    |
[INFO] [stderr] 39 |     Cons(i32, Box<List>),
[INFO] [stderr]    |     ---- ^^^  ^^^^^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     fields in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]    |
[INFO] [stderr] 39 -     Cons(i32, Box<List>),
[INFO] [stderr] 39 +     Cons((), ()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `learning-smart-pointers` (bin "dyn" test) generated 5 warnings
[INFO] [stderr] warning: `learning-smart-pointers` (bin "weak" test) generated 1 warning
[INFO] [stderr] warning: `learning-smart-pointers` (bin "box" test) generated 1 warning
[INFO] [stderr] warning: field `value` is never read
[INFO] [stderr]   --> smart_pointers/src/bin/rc.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | struct Data {
[INFO] [stderr]    |        ---- field in this struct
[INFO] [stderr] 21 |     value: i32,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Data` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `value` is never read
[INFO] [stderr]    --> smart_pointers/src/bin/rc.rs:152:5
[INFO] [stderr]     |
[INFO] [stderr] 151 | struct CycleNode {
[INFO] [stderr]     |        --------- field in this struct
[INFO] [stderr] 152 |     value: i32,
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `get` is never used
[INFO] [stderr]    --> concurrency/src/bin/rwlock.rs:355:8
[INFO] [stderr]     |
[INFO] [stderr] 348 | impl Cache {
[INFO] [stderr]     | ---------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 355 |     fn get(&self, key: &str) -> Option<String> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `increment` is never used
[INFO] [stderr]    --> concurrency/src/bin/mutex.rs:227:8
[INFO] [stderr]     |
[INFO] [stderr] 220 | impl ThreadSafeCounter {
[INFO] [stderr]     | ---------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 227 |     fn increment(&self) {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `clone` are never used
[INFO] [stderr]    --> concurrency/src/bin/atomic.rs:315:8
[INFO] [stderr]     |
[INFO] [stderr] 314 | impl<T> ArcLike<T> {
[INFO] [stderr]     | ------------------ associated items in this implementation
[INFO] [stderr] 315 |     fn new(data: T) -> ArcLike<T> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 322 |     fn clone(&self) -> ArcLike<T> {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `learning-smart-pointers` (bin "rc" test) generated 2 warnings
[INFO] [stderr] warning: `learning-concurrency` (bin "rwlock" test) generated 1 warning
[INFO] [stderr] warning: `learning-concurrency` (bin "mutex" test) generated 1 warning
[INFO] [stderr] warning: `learning-concurrency` (bin "atomic" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cargo_mastery-f1b9ff11dab9dc22)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_internal_logic ... ok
[INFO] [stdout] test tests::test_public_api ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/cargo_mastery-d49aca6c442024e8)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/profile_demo.rs (/opt/rustwide/target/debug/deps/profile_demo-4fba1841d2d09e70)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/integration_test.rs (/opt/rustwide/target/debug/deps/integration_test-39e04e965062bc77)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_from_outside ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/atomic.rs (/opt/rustwide/target/debug/deps/atomic-6c3f70e4a27ab192)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/channels.rs (/opt/rustwide/target/debug/deps/channels-4774a8791559e302)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/bin/mutex.rs (/opt/rustwide/target/debug/deps/mutex-69b690b6bb075408)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/rwlock.rs (/opt/rustwide/target/debug/deps/rwlock-5d41ff82410c926f)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/send_sync.rs (/opt/rustwide/target/debug/deps/send_sync-557a4ad07f0cb94c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/threads.rs (/opt/rustwide/target/debug/deps/threads-ce89995fd9b4b5e1)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ecosystem.rs (/opt/rustwide/target/debug/deps/ecosystem-d16a362cbbb65839)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/std_basics.rs (/opt/rustwide/target/debug/deps/std_basics-d21972d897217fbb)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/cleaner.rs (/opt/rustwide/target/debug/deps/cleaner-03bc68f1836c0eb6)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr] error: test failed, to rerun pass `-p learning-file-io --bin cleaner`
[INFO] [stdout] test tests::test_clean_empty_dirs_logic ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::test_clean_empty_dirs_logic stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::test_clean_empty_dirs_logic' (32) panicked at file_io/src/bin/cleaner.rs:71:75:
[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:     0x55bf275599f2 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x55bf275599f2 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x55bf275599f2 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x55bf275599f2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x55bf27569baa - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x55bf27569baa - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x55bf27527636 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x55bf27527636 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x55bf275389f9 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x55bf275389f9 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x55bf27538891 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x55bf274eae0e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x55bf274eae0e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x55bf27538c72 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x55bf27538c72 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x55bf27538ab8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x55bf27533e29 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x55bf2751b6fd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x55bf27570f1c - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x55bf27570832 - core::result::unwrap_failed::h7d4c34940aded59c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x55bf274cad56 - core::result::Result<T,E>::unwrap::h74bb73e247993626
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x55bf274cad56 - cleaner::tests::setup_test_environment::he92cb8e52ac64759
[INFO] [stdout]                                at /opt/rustwide/workdir/file_io/src/bin/cleaner.rs:71:75
[INFO] [stdout]   22:     0x55bf274cb49c - cleaner::tests::test_clean_empty_dirs_logic::ha3c3f6c0acab2347
[INFO] [stdout]                                at /opt/rustwide/workdir/file_io/src/bin/cleaner.rs:86:9
[INFO] [stdout]   23:     0x55bf274cbde7 - cleaner::tests::test_clean_empty_dirs_logic::{{closure}}::hc57ac1bbcc480a87
[INFO] [stdout]                                at /opt/rustwide/workdir/file_io/src/bin/cleaner.rs:84:37
[INFO] [stdout]   24:     0x55bf274c8cf6 - core::ops::function::FnOnce::call_once::h5018e3e08d97a7df
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55bf274eac0b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x55bf274eac0b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   27:     0x55bf274fe5da - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   28:     0x55bf274fe5da - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   29:     0x55bf274fe5da - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   30:     0x55bf274fe5da - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   31:     0x55bf274fe5da - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   32:     0x55bf274fe5da - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   33:     0x55bf274fe5da - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   34:     0x55bf274d8a34 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   35:     0x55bf274d8a34 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   36:     0x55bf274dc2f2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   37:     0x55bf274dc2f2 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   38:     0x55bf274dc2f2 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   39:     0x55bf274dc2f2 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   40:     0x55bf274dc2f2 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   41:     0x55bf274dc2f2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   42:     0x55bf274dc2f2 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x55bf2752ef7f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   44:     0x55bf2752ef7f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   45:     0x767404c98aa4 - <unknown>
[INFO] [stdout]   46:     0x767404d25a64 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::test_clean_empty_dirs_logic
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7080bf8cae9bc025297db6f03e48781cd8a081622e82156eec18eef31246a05d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7080bf8cae9bc025297db6f03e48781cd8a081622e82156eec18eef31246a05d", kill_on_drop: false }`
[INFO] [stdout] 7080bf8cae9bc025297db6f03e48781cd8a081622e82156eec18eef31246a05d
