[INFO] cloning repository https://github.com/puzzzzzzle/rust_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/puzzzzzzle/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuzzzzzzle%2Frust_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuzzzzzzle%2Frust_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] df154500980fa7164fe4ac0b27343eb5f25272c4
[INFO] checking puzzzzzzle/rust_study against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuzzzzzzle%2Frust_study" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/puzzzzzzle/rust_study
[INFO] finished tweaking git repo https://github.com/puzzzzzzle/rust_study
[INFO] tweaked toml for git repo https://github.com/puzzzzzzle/rust_study written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/puzzzzzzle/rust_study on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/puzzzzzzle/rust_study 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c83feb70caa8e0fbb098e9b7b4c9237208fb676182e2db5e33c3388ab22194f4
[INFO] running `Command { std: "docker" "start" "-a" "c83feb70caa8e0fbb098e9b7b4c9237208fb676182e2db5e33c3388ab22194f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c83feb70caa8e0fbb098e9b7b4c9237208fb676182e2db5e33c3388ab22194f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c83feb70caa8e0fbb098e9b7b4c9237208fb676182e2db5e33c3388ab22194f4", kill_on_drop: false }`
[INFO] [stdout] c83feb70caa8e0fbb098e9b7b4c9237208fb676182e2db5e33c3388ab22194f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "12e833a4b841e49ef0c612b7a86d2ed18204288bb78af32b8e8e3f4fc5f8d2dd", kill_on_drop: false }`
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[INFO] [stderr]     Checking icu_properties_data v1.5.0
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[INFO] [stderr]    Compiling httparse v1.10.0
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[INFO] [stderr]    Compiling native-tls v0.2.13
[INFO] [stderr]    Compiling proc_macros_trait v0.1.0 (/opt/rustwide/workdir/proc_macros_trait)
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[INFO] [stderr]     Checking rand_core v0.9.0
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[INFO] [stderr]     Checking num-integer v0.1.46
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[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling clang-sys v1.8.1
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[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling num-rational v0.1.43
[INFO] [stderr]    Compiling num-complex v0.1.44
[INFO] [stderr]    Compiling pyo3-build-config v0.24.2
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[INFO] [stderr]    Compiling bindgen v0.71.1
[INFO] [stderr]     Checking clap v4.5.28
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]    Compiling link-cplusplus v1.0.9
[INFO] [stderr]    Compiling memoffset v0.9.1
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[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling log v0.4.25
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling rustc-hash v2.1.1
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.138
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling rustversion v1.0.19
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling cxx v1.0.138
[INFO] [stderr]    Compiling rust_call_c_manul v0.1.0 (/opt/rustwide/workdir/rust_with_c/rust_with_c_manul)
[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking unindent v0.2.4
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling indoc v2.0.6
[INFO] [stderr]     Checking foldhash v0.1.4
[INFO] [stderr]    Compiling function_name-proc-macro v0.3.0
[INFO] [stderr]     Checking declarative_macro v0.1.0 (/opt/rustwide/workdir/declarative_macro)
[INFO] [stderr]     Checking rust_language_examples v0.1.0 (/opt/rustwide/workdir/rust_language_examples)
[INFO] [stderr]     Checking c_call_rust_auto v0.1.0 (/opt/rustwide/workdir/rust_with_c/c_call_rust_auto)
[INFO] [stdout] warning: struct `Printable` is never constructed
[INFO] [stdout]  --> rust_language_examples/examples/basic_types.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct  Printable(i32);
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Vec2D` is never constructed
[INFO] [stdout]   --> rust_language_examples/examples/basic_types.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct Vec2D(i32,i32);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> rust_language_examples/examples/basic_types.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | struct Point
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking function_name v0.3.0
[INFO] [stderr]    Compiling pyo3-ffi v0.24.2
[INFO] [stderr]    Compiling pyo3-macros-backend v0.24.2
[INFO] [stderr]    Compiling pyo3 v0.24.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]     Checking num v0.1.43
[INFO] [stderr]     Checking stopwatch v0.0.7
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]  --> rust_with_c/rust_with_c_manul/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern
[INFO] [stdout]   | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]  --> rust_with_c/rust_with_c_manul/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern
[INFO] [stdout]   | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling cxx-build v1.0.138
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling zerofrom-derive v0.1.5
[INFO] [stderr]    Compiling yoke-derive v0.7.5
[INFO] [stderr]    Compiling zerovec-derive v0.10.3
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling icu_provider_macros v1.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling proc_macros v0.1.0 (/opt/rustwide/workdir/proc_macros)
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling deprecate-until v0.1.1
[INFO] [stderr]     Checking tokio v1.43.0
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.138
[INFO] [stderr]     Checking zerofrom v0.1.5
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking yoke v0.7.5
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking zerovec v0.10.4
[INFO] [stdout] warning: variable `p` is assigned to, but never used
[INFO] [stdout]   --> proc_macros/tests/test_trace_var.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut p = 1;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_p` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling use_cxx_lib v0.1.0 (/opt/rustwide/workdir/rust_with_c/use_cxx_lib)
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand v0.9.0
[INFO] [stderr]     Checking pathfinding v4.14.0
[INFO] [stderr]     Checking guess_game v0.1.0 (/opt/rustwide/workdir/module_test/guess_game)
[INFO] [stderr]    Compiling pyo3-macros v0.24.2
[INFO] [stderr]     Checking hello_mod v0.1.0 (/opt/rustwide/workdir/module_test/hello_mod)
[INFO] [stderr]     Checking tinystr v0.7.6
[INFO] [stderr]     Checking icu_collections v1.5.0
[INFO] [stdout] warning: function `hello` is never used
[INFO] [stdout]  --> module_test/hello_mod/src/hello_dir/hello_dir_2.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn hello() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_private` is never used
[INFO] [stdout]   --> module_test/hello_mod/src/hello_sub.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |         fn hello_private() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello` is never used
[INFO] [stdout]  --> module_test/hello_mod/src/hello_dir/hello_dir_2.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn hello() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_private` is never used
[INFO] [stdout]   --> module_test/hello_mod/src/hello_sub.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |         fn hello_private() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking icu_locid v1.5.0
[INFO] [stderr]     Checking icu_provider v1.5.0
[INFO] [stderr]     Checking icu_locid_transform v1.5.0
[INFO] [stderr]     Checking icu_properties v1.5.1
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stdout] warning: `#[automatically_derived]` attribute cannot be used on inherent impl blocks
[INFO] [stdout]   --> rust_with_c/use_cxx_lib/src/main.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |         fn put(&self, parts: &mut MultiBuf) -> u64;
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[automatically_derived]` can only be applied to trait impl blocks
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[automatically_derived]` attribute cannot be used on inherent impl blocks
[INFO] [stdout]   --> rust_with_c/use_cxx_lib/src/main.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |         fn tag(&self, blobid: u64, tag: &str);
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[automatically_derived]` can only be applied to trait impl blocks
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[automatically_derived]` attribute cannot be used on inherent impl blocks
[INFO] [stdout]   --> rust_with_c/use_cxx_lib/src/main.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |         fn metadata(&self, blobid: u64) -> BlobMetadata;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[automatically_derived]` can only be applied to trait impl blocks
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[automatically_derived]` attribute cannot be used on inherent impl blocks
[INFO] [stdout]   --> rust_with_c/use_cxx_lib/src/main.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |         fn put(&self, parts: &mut MultiBuf) -> u64;
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[automatically_derived]` can only be applied to trait impl blocks
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[automatically_derived]` attribute cannot be used on inherent impl blocks
[INFO] [stdout]   --> rust_with_c/use_cxx_lib/src/main.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |         fn tag(&self, blobid: u64, tag: &str);
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[automatically_derived]` can only be applied to trait impl blocks
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[automatically_derived]` attribute cannot be used on inherent impl blocks
[INFO] [stdout]   --> rust_with_c/use_cxx_lib/src/main.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |         fn metadata(&self, blobid: u64) -> BlobMetadata;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[automatically_derived]` can only be applied to trait impl blocks
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling rust_call_c_auto v0.1.0 (/opt/rustwide/workdir/rust_with_c/rust_call_c_auto)
[INFO] [stderr]     Checking tokio-util v0.7.13
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking icu_normalizer v1.5.0
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking py_astar v0.1.0 (/opt/rustwide/workdir/rust_with_python/py_astar)
[INFO] [stderr]     Checking h2 v0.3.26
[INFO] [stderr]     Checking criterion v0.6.0
[INFO] [stderr]     Checking idna_adapter v1.2.0
[INFO] [stderr]     Checking log4rs v1.3.0
[INFO] [stderr]     Checking idna v1.0.3
[INFO] [stderr]     Checking url v2.5.4
[INFO] [stderr]     Checking hyper v0.14.32
[INFO] [stderr]     Checking common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.27
[INFO] [stderr]     Checking common_concepts v0.1.0 (/opt/rustwide/workdir/rust_language)
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> rust_language/examples/unsafe_borrow_test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> rust_language/examples/unsafe_borrow_test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::future::Lazy`
[INFO] [stdout]  --> rust_language/examples/unsafe_borrow_test.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use futures::future::Lazy;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> rust_language/examples/unsafe_borrow_test.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Result` and `anyhow`
[INFO] [stdout]  --> rust_language/examples/c07-1_error_handle.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{anyhow, Result};
[INFO] [stdout]   |              ^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `common`
[INFO] [stdout]  --> rust_language/examples/c07-1_error_handle.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use common;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::*`
[INFO] [stdout]  --> rust_language/examples/c07-1_error_handle.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use log::*;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> rust_language/examples/unsafe_borrow_test.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Point(i32, i32);
[INFO] [stdout]   |        ----- ^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 7 - struct Point(i32, i32);
[INFO] [stdout] 7 + struct Point((), i32);
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StaticData` is never constructed
[INFO] [stdout]   --> rust_language/examples/unsafe_borrow_test.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct StaticData
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> rust_language/examples/log_test.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{Result, anyhow, Context};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> rust_language/examples/format_test.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct Deep(Structure);
[INFO] [stdout]    |        ---- ^^^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Deep` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[INFO] [stdout]  --> rust_language/examples/c04_enum_test.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |     enum IpAddrKind {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IpAddr` is never constructed
[INFO] [stdout]  --> rust_language/examples/c04_enum_test.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     struct IpAddr {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnknownIpAddr` is never constructed
[INFO] [stdout]   --> rust_language/examples/c04_enum_test.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 |     struct UnknownIpAddr {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddr` is never used
[INFO] [stdout]   --> rust_language/examples/c04_enum_test.rs:57:10
[INFO] [stdout]    |
[INFO] [stdout] 57 |     enum IpAddr {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::remove_file`
[INFO] [stdout]  --> rust_language/examples/c07_error_test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::remove_file;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::ErrorKind`
[INFO] [stdout]  --> rust_language/examples/c07_error_test.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::ErrorKind;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `factorial` is never used
[INFO] [stdout]  --> rust_language/examples/macro_test.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn factorial(mut n: u64) -> u64 {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_user` is never used
[INFO] [stdout]   --> rust_language/examples/log_test.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn get_user(id: u32) -> Result<String> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> rust_language/examples/c06_std_collections_test.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     use std::collections::HashMap;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> rust_language/examples/c06_std_collections_test.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout]  2 | mod test_collections {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_ownership` is never used
[INFO] [stdout]   --> rust_language/examples/c03_test_ownership.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn take_ownership(s: String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_and_gives_back` is never used
[INFO] [stdout]   --> rust_language/examples/c03_test_ownership.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn takes_and_gives_back(s: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow` is never used
[INFO] [stdout]   --> rust_language/examples/c03_test_ownership.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn borrow(s: &mut String) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `str_arr` is never used
[INFO] [stdout]   --> rust_language/examples/c03_test_ownership.rs:64:4
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn str_arr(arr: &[i32]) -> String {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mut_borrow_sub` is never used
[INFO] [stdout]   --> rust_language/examples/c03_test_ownership.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn mut_borrow_sub(arg: &mut String, append: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mut_borrow` is never used
[INFO] [stdout]   --> rust_language/examples/c03_test_ownership.rs:77:4
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn mut_borrow(arg: &mut String, append: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `FILE_NAME` is never used
[INFO] [stdout]  --> rust_language/examples/c07_error_test.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | static FILE_NAME: &str = "hello.txt";
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file` is never used
[INFO] [stdout]   --> rust_language/examples/c07_error_test.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn read_username_from_file(name: &str) -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file_simple` is never used
[INFO] [stdout]   --> rust_language/examples/c07_error_test.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn read_username_from_file_simple(name: &str) -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::pin::Pin`
[INFO] [stdout]  --> rust_language/examples/pin_test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::pin::Pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_user` is never used
[INFO] [stdout]   --> rust_language/examples/c05_struct_test.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn build_user(username: String) -> User {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `area` is never used
[INFO] [stdout]   --> rust_language/examples/c05_struct_test.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | impl Rectangle {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 60 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area` is never used
[INFO] [stdout]   --> rust_language/examples/c05_struct_test.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn area(rectangle: &Rectangle) -> u32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `combine_vecs` is never used
[INFO] [stdout]    --> rust_language/examples/c05_struct_test.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn combine_vecs<T: Clone>(v: Vec<T>, u: Vec<T>) -> impl Iterator<Item = T> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OnceCell`
[INFO] [stdout]  --> rust_language/examples/static_test.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{OnceCell, RefCell};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::executor::block_on`
[INFO] [stdout]  --> rust_language/examples/co_test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use futures::executor::block_on;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello` is never used
[INFO] [stdout]  --> rust_language/examples/co_test.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | async fn hello() -> String {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_1` is never used
[INFO] [stdout]  --> rust_language/examples/co_test.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | async fn hello_1() -> String {
[INFO] [stdout]   |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_1_2` is never used
[INFO] [stdout]   --> rust_language/examples/co_test.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | async fn hello_1_2() -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_latter` is never used
[INFO] [stdout]   --> rust_language/examples/co_test.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | async fn hello_latter() -> String {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `common`
[INFO] [stdout]  --> rust_language/examples/c01_func_test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use common;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::*`
[INFO] [stdout]  --> rust_language/examples/c01_func_test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log::*;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `i1`, `d1`, and `s1` are never read
[INFO] [stdout]  --> rust_language/examples/static_test.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct StaticData
[INFO] [stdout]   |            ---------- fields in this struct
[INFO] [stdout] 4 | {
[INFO] [stdout] 5 |     i1: i32,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 6 |     d1: f64,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     s1: String,
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `StaticData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_func` is never used
[INFO] [stdout]   --> rust_language/examples/c01_func_test.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn hello_func() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_int` is never used
[INFO] [stdout]   --> rust_language/examples/c01_func_test.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn hello_int(name: i32) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_ret_int` is never used
[INFO] [stdout]   --> rust_language/examples/c01_func_test.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn hello_ret_int(name: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_if` is never used
[INFO] [stdout]   --> rust_language/examples/c01_func_test.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn test_if(cond: bool) -> i32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loop_test` is never used
[INFO] [stdout]   --> rust_language/examples/c01_func_test.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn loop_test() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `outer_fn` is never used
[INFO] [stdout]   --> rust_language/examples/c01_func_test.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn outer_fn() -> i32 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 45.72s
[INFO] running `Command { std: "docker" "inspect" "12e833a4b841e49ef0c612b7a86d2ed18204288bb78af32b8e8e3f4fc5f8d2dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12e833a4b841e49ef0c612b7a86d2ed18204288bb78af32b8e8e3f4fc5f8d2dd", kill_on_drop: false }`
[INFO] [stdout] 12e833a4b841e49ef0c612b7a86d2ed18204288bb78af32b8e8e3f4fc5f8d2dd