[INFO] cloning repository https://github.com/bbq191/rust-basics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bbq191/rust-basics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbbq191%2Frust-basics", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbbq191%2Frust-basics'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 779bf16d96ab308d3fbf69e96968c2d682d191e1
[INFO] checking bbq191/rust-basics/779bf16d96ab308d3fbf69e96968c2d682d191e1 against master#36b21637e93b038453924d3c66821089e71d8baa for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbbq191%2Frust-basics" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bbq191/rust-basics
[INFO] finished tweaking git repo https://github.com/bbq191/rust-basics
[INFO] tweaked toml for git repo https://github.com/bbq191/rust-basics written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bbq191/rust-basics on toolchain 36b21637e93b038453924d3c66821089e71d8baa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bbq191/rust-basics 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" "+36b21637e93b038453924d3c66821089e71d8baa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded env_filter v0.1.1
[INFO] [stderr]   Downloaded env_logger v0.11.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26fe68adfb32e0518869e921eebfbfba7df04ee242dae89f9aff9e6d1b6deaa4
[INFO] running `Command { std: "docker" "start" "-a" "26fe68adfb32e0518869e921eebfbfba7df04ee242dae89f9aff9e6d1b6deaa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26fe68adfb32e0518869e921eebfbfba7df04ee242dae89f9aff9e6d1b6deaa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26fe68adfb32e0518869e921eebfbfba7df04ee242dae89f9aff9e6d1b6deaa4", kill_on_drop: false }`
[INFO] [stdout] 26fe68adfb32e0518869e921eebfbfba7df04ee242dae89f9aff9e6d1b6deaa4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eadb75910dff231b8b402f2724e04bd636145428b5adbdf0b6e151800826663d
[INFO] running `Command { std: "docker" "start" "-a" "eadb75910dff231b8b402f2724e04bd636145428b5adbdf0b6e151800826663d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]     Checking utf8parse v0.2.2
[INFO] [stderr]     Checking anstyle-query v1.1.0
[INFO] [stderr]     Checking anstyle v1.0.7
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking colorchoice v1.0.1
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking by-example v0.1.0 (/opt/rustwide/workdir/by-example)
[INFO] [stderr]     Checking anstyle-parse v0.2.4
[INFO] [stdout] warning: unused variable: `logical`
[INFO] [stdout]  --> by-example/01-primitives/primitives.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let logical: bool = true;
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_float`
[INFO] [stdout]  --> by-example/01-primitives/primitives.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let a_float: f64 = 1.0; // 常规说明
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `an_integer`
[INFO] [stdout]  --> by-example/01-primitives/primitives.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let an_integer = 5i32; // 后缀说明
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_an_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_float`
[INFO] [stdout]  --> by-example/01-primitives/primitives.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let default_float = 3.0; // `f64`
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_integer`
[INFO] [stdout]   --> by-example/01-primitives/primitives.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let default_integer = 7; // `i32`
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `inferred_type` is assigned to, but never used
[INFO] [stdout]   --> by-example/01-primitives/primitives.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut inferred_type = 12; // 根据下一行的赋值推断为 i64 类型
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_inferred_type` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `inferred_type` is never read
[INFO] [stdout]   --> by-example/01-primitives/primitives.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     inferred_type = 4294967296i64;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `mutable` is assigned to, but never used
[INFO] [stdout]   --> by-example/01-primitives/primitives.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut mutable = 12; // Mutable `i32`
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_mutable` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `mutable` is never read
[INFO] [stdout]   --> by-example/01-primitives/primitives.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     mutable = 21;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mutable`
[INFO] [stdout]   --> by-example/01-primitives/primitives.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mutable = true;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking datastructure v0.1.0 (/opt/rustwide/workdir/datastructure)
[INFO] [stderr]     Checking anstream v0.6.14
[INFO] [stdout] warning: variant `Soldier` is never constructed
[INFO] [stdout]  --> by-example/02-custom-type/enum/use.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Work {
[INFO] [stdout]   |      ---- variant in this enum
[INFO] [stdout] 7 |     Civilian,
[INFO] [stdout] 8 |     Soldier,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> by-example/02-custom-type/enum/type-aliase.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let x = Operations::Add;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Subtract` is never constructed
[INFO] [stdout]  --> by-example/02-custom-type/enum/type-aliase.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum VeryVerboseEnumOfThingsToDoWithNumbers {
[INFO] [stdout]   |      -------------------------------------- variant in this enum
[INFO] [stdout] 2 |     Add,
[INFO] [stdout] 3 |     Subtract,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]   --> by-example/02-custom-type/enum/type-aliase.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl VeryVerboseEnumOfThingsToDoWithNumbers {
[INFO] [stdout]    | ------------------------------------------- method in this implementation
[INFO] [stdout] 10 |     fn run(&self, x: i32, y: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> by-example/00-helloworld/std-fmt.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Structure(i32);
[INFO] [stdout]   |        --------- ^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `Structure` 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: field `0` is never read
[INFO] [stdout]  --> by-example/00-helloworld/std-fmt.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 | 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]   --> by-example/00-helloworld/std-fmt.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Person<'a> {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 12 |     name: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 13 |     age: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_string`
[INFO] [stdout]   --> by-example/05-conversion/from-into.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let my_string = String::from(my_str);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_string`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> by-example/05-conversion/from-into.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Number {
[INFO] [stdout]   |        ------ field in this struct
[INFO] [stdout] 6 |     value: i32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Number` 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: unused variable: `x`
[INFO] [stdout]   --> by-example/02-custom-type/enum/type-aliase.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let x = Operations::Add;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Subtract` is never constructed
[INFO] [stdout]  --> by-example/02-custom-type/enum/type-aliase.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum VeryVerboseEnumOfThingsToDoWithNumbers {
[INFO] [stdout]   |      -------------------------------------- variant in this enum
[INFO] [stdout] 2 |     Add,
[INFO] [stdout] 3 |     Subtract,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]   --> by-example/02-custom-type/enum/type-aliase.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl VeryVerboseEnumOfThingsToDoWithNumbers {
[INFO] [stdout]    | ------------------------------------------- method in this implementation
[INFO] [stdout] 10 |     fn run(&self, x: i32, y: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> by-example/06-expression/expression.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |         2 * x;
[INFO] [stdout]    |         ^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let _ = 2 * x;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `noisy_unused_variable`
[INFO] [stdout]   --> by-example/03-variable-binding/variable-binding.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let noisy_unused_variable = 2u32;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_noisy_unused_variable`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Rich` is never constructed
[INFO] [stdout]  --> by-example/02-custom-type/enum/use.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Status {
[INFO] [stdout]   |      ------ variant in this enum
[INFO] [stdout] 2 |     Rich,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Soldier` is never constructed
[INFO] [stdout]  --> by-example/02-custom-type/enum/use.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Work {
[INFO] [stdout]   |      ---- variant in this enum
[INFO] [stdout] 7 |     Civilian,
[INFO] [stdout] 8 |     Soldier,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not parse/generate dep info at: /opt/rustwide/target/debug/deps/format_print-43b19711a6726bf2.d
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to write `/opt/rustwide/target/debug/.fingerprint/by-example-43b19711a6726bf2/dep-test-bin-format-print`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not parse/generate dep info at: /opt/rustwide/target/debug/deps/inference-00135133884cf5f6.d
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to write `/opt/rustwide/target/debug/.fingerprint/by-example-00135133884cf5f6/dep-test-bin-inference`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/opt/rustwide/target/debug/deps/rmetams4F4N"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logical`
[INFO] [stdout]  --> by-example/01-primitives/primitives.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let logical: bool = true;
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_float`
[INFO] [stdout]  --> by-example/01-primitives/primitives.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let a_float: f64 = 1.0; // 常规说明
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `an_integer`
[INFO] [stdout]  --> by-example/01-primitives/primitives.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let an_integer = 5i32; // 后缀说明
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_an_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_float`
[INFO] [stdout]  --> by-example/01-primitives/primitives.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let default_float = 3.0; // `f64`
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_integer`
[INFO] [stdout]   --> by-example/01-primitives/primitives.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let default_integer = 7; // `i32`
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `inferred_type` is assigned to, but never used
[INFO] [stdout]   --> by-example/01-primitives/primitives.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut inferred_type = 12; // 根据下一行的赋值推断为 i64 类型
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_inferred_type` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `inferred_type` is never read
[INFO] [stdout]   --> by-example/01-primitives/primitives.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     inferred_type = 4294967296i64;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `mutable` is assigned to, but never used
[INFO] [stdout]   --> by-example/01-primitives/primitives.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut mutable = 12; // Mutable `i32`
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_mutable` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `mutable` is never read
[INFO] [stdout]   --> by-example/01-primitives/primitives.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     mutable = 21;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mutable`
[INFO] [stdout]   --> by-example/01-primitives/primitives.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mutable = true;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/opt/rustwide/target/debug/deps/rmetaR5149I"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `by-example` (bin "try-from-into" test) due to 1 previous error
[INFO] [stdout] warning: unused variable: `noisy_unused_variable`
[INFO] [stdout]   --> by-example/03-variable-binding/variable-binding.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let noisy_unused_variable = 2u32;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_noisy_unused_variable`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note:  "cc" "-m64" "/tmp/rustc5GGTdq/symbols.o" "<2 object files omitted>" "-Wl,--as-needed" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/{libautocfg-0c4f859a930e1eb4.rlib}.rlib" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libstd-*,libpanic_unwind-*,libobject-*,libmemchr-*,libaddr2line-*,libgimli-*,librustc_demangle-*,libstd_detect-*,libhashbrown-*,librustc_std_workspace_alloc-*,libminiz_oxide-*,libadler2-*,libunwind-*,libcfg_if-*,liblibc-*,librustc_std_workspace_core-*,liballoc-*,libcore-*,libcompiler_builtins-*}.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-L" "/tmp/rustc5GGTdq/raw-dylibs" "-B<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,-znostart-stop-gc" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/build/lock_api-97fbf4adf812d0b7/build_script_build-97fbf4adf812d0b7" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: some arguments are omitted. use `--verbose` to show all linker arguments
[INFO] [stdout]   = note: PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
[INFO] [stdout]           LLVM ERROR: IO failure on output stream: No space left on device
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex-syntax` (lib) due to 1 previous error
[INFO] [stderr] error: could not compile `lock_api` (build script) due to 1 previous error
[INFO] [stderr] error: could not parse/generate dep info at: /opt/rustwide/target/debug/deps/enum-0a7b67e0436af97f.d
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to write `/opt/rustwide/target/debug/.fingerprint/by-example-0a7b67e0436af97f/dep-bin-enum`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/opt/rustwide/target/debug/deps/rmetaTjDbCg"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `memchr` (lib) due to 1 previous error
[INFO] [stdout] error: failed to write to `/opt/rustwide/target/debug/deps/rmeta6elxQ6/full.rmeta`: No space left on device (os error 28)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libc` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "eadb75910dff231b8b402f2724e04bd636145428b5adbdf0b6e151800826663d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eadb75910dff231b8b402f2724e04bd636145428b5adbdf0b6e151800826663d", kill_on_drop: false }`
[INFO] [stdout] eadb75910dff231b8b402f2724e04bd636145428b5adbdf0b6e151800826663d