[INFO] cloning repository https://github.com/yew1eb/rustlab [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yew1eb/rustlab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyew1eb%2Frustlab", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyew1eb%2Frustlab'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5b75a388eff2d4b5bd104888b39d2a125b539024 [INFO] checking yew1eb/rustlab against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyew1eb%2Frustlab" "/workspace/builds/worker-14/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/yew1eb/rustlab on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/yew1eb/rustlab [INFO] finished tweaking git repo https://github.com/yew1eb/rustlab [INFO] tweaked toml for git repo https://github.com/yew1eb/rustlab written to /workspace/builds/worker-14/source/Cargo.toml [INFO] crate git repo https://github.com/yew1eb/rustlab already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded awc v2.0.1 [INFO] [stderr] Downloaded scheduled-thread-pool v0.2.5 [INFO] [stderr] Downloaded trust-dns-resolver v0.19.5 [INFO] [stderr] Downloaded r2d2 v0.8.9 [INFO] [stderr] Downloaded actix v0.10.0 [INFO] [stderr] Downloaded diesel v1.4.5 [INFO] [stderr] Downloaded toml v0.5.7 [INFO] [stderr] Downloaded futures-sink v0.3.7 [INFO] [stderr] Downloaded actix-web v3.2.0 [INFO] [stderr] Downloaded futures-channel v0.3.7 [INFO] [stderr] Downloaded futures-task v0.3.7 [INFO] [stderr] Downloaded futures v0.3.7 [INFO] [stderr] Downloaded trust-dns-proto v0.19.5 [INFO] [stderr] Downloaded actix-http v2.1.0 [INFO] [stderr] Downloaded futures-core v0.3.7 [INFO] [stderr] Downloaded futures-io v0.3.7 [INFO] [stderr] Downloaded futures-macro v0.3.7 [INFO] [stderr] Downloaded futures-util v0.3.7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2ffa373abe6f08a751b6d954b67ad1957c35b55b795749d43c9250b6d060fcc1 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "2ffa373abe6f08a751b6d954b67ad1957c35b55b795749d43c9250b6d060fcc1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2ffa373abe6f08a751b6d954b67ad1957c35b55b795749d43c9250b6d060fcc1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2ffa373abe6f08a751b6d954b67ad1957c35b55b795749d43c9250b6d060fcc1", kill_on_drop: false }` [INFO] [stdout] 2ffa373abe6f08a751b6d954b67ad1957c35b55b795749d43c9250b6d060fcc1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6da250120cd5e3c305543bce4c2dc699e81ada9a81c2e1968aaa07f9c7ce36e0 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "6da250120cd5e3c305543bce4c2dc699e81ada9a81c2e1968aaa07f9c7ce36e0", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking bytes v0.5.6 [INFO] [stderr] Checking futures-io v0.3.7 [INFO] [stderr] Checking pin-project-lite v0.1.11 [INFO] [stderr] Checking once_cell v1.4.1 [INFO] [stderr] Checking tinyvec v0.3.4 [INFO] [stderr] Compiling serde_derive v1.0.117 [INFO] [stderr] Compiling serde v1.0.117 [INFO] [stderr] Checking adler v0.2.3 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking percent-encoding v2.1.0 [INFO] [stderr] Checking itoa v0.4.6 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Compiling unicode-segmentation v1.6.0 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking match_cfg v0.1.0 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling const_fn v0.4.3 [INFO] [stderr] Compiling serde_json v1.0.59 [INFO] [stderr] Compiling regex-syntax v0.6.21 [INFO] [stderr] Compiling bindgen v0.54.0 [INFO] [stderr] Checking cpuid-bool v0.1.2 [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Compiling termcolor v1.1.0 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling peeking_take_while v0.1.2 [INFO] [stderr] Checking mime v0.3.16 [INFO] [stderr] Compiling rustc-hash v1.1.0 [INFO] [stderr] Compiling shlex v0.1.1 [INFO] [stderr] Checking mylib v0.1.0 (/opt/rustwide/workdir/example-projects/trpl-webserver/mylib) [INFO] [stderr] Checking json v0.12.4 [INFO] [stderr] Checking rustlab v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking basic-exercises v0.1.0 (/opt/rustwide/workdir/basic-exercises) [INFO] [stdout] warning: field is never read: `id` [INFO] [stdout] --> example-projects/trpl-webserver/mylib/src/lib.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | id: usize, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking futures-channel v0.3.7 [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking instant v0.1.8 [INFO] [stderr] Compiling miniz_oxide v0.4.3 [INFO] [stderr] Compiling standback v0.2.11 [INFO] [stdout] warning: field is never read: `id` [INFO] [stdout] --> example-projects/trpl-webserver/mylib/src/lib.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | id: usize, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling generic-array v0.14.4 [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Compiling indexmap v1.6.0 [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> basic-exercises/src/closure_base.rs:1:27 [INFO] [stdout] | [INFO] [stdout] 1 | fn counter(i: i32) -> Box i32> { [INFO] [stdout] | ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused macro definition [INFO] [stdout] --> basic-exercises/src/macros_base.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | / macro_rules! say_hello { [INFO] [stdout] 2 | | // `()` 表示此宏不接受任何参数。 [INFO] [stdout] 3 | | () => { [INFO] [stdout] 4 | | // 此宏将会展开成这个代码块里面的内容。 [INFO] [stdout] 5 | | println!("Hello!"); [INFO] [stdout] 6 | | }; [INFO] [stdout] 7 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_macros)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused macro definition [INFO] [stdout] --> basic-exercises/src/macros_base.rs:26:1 [INFO] [stdout] | [INFO] [stdout] 26 | / macro_rules! print_result { [INFO] [stdout] 27 | | // 此宏接受一个 `expr` 类型的表达式，将它转换成一个字符串， [INFO] [stdout] 28 | | // 并伴随着表达式的结果。 [INFO] [stdout] 29 | | // `expr` 指示符用于表达式。 [INFO] [stdout] ... | [INFO] [stdout] 34 | | }; [INFO] [stdout] 35 | | } [INFO] [stdout] | |_^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused macro definition [INFO] [stdout] --> basic-exercises/src/macros_base.rs:39:1 [INFO] [stdout] | [INFO] [stdout] 39 | / macro_rules! test { [INFO] [stdout] 40 | | // 参数不需要使用逗号隔开。 [INFO] [stdout] 41 | | // 可以使用任意模板（原文：Any template can be used!）！ [INFO] [stdout] 42 | | ($left:expr; and $right:expr) => { [INFO] [stdout] ... | [INFO] [stdout] 58 | | }; [INFO] [stdout] 59 | | } [INFO] [stdout] | |_^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused macro definition [INFO] [stdout] --> basic-exercises/src/macros_base.rs:62:1 [INFO] [stdout] | [INFO] [stdout] 62 | / macro_rules! find_min { [INFO] [stdout] 63 | | // 基本情形： [INFO] [stdout] 64 | | ($x:expr) => ($x); [INFO] [stdout] 65 | | // `$x` 后面跟着至少一个 `$y,` [INFO] [stdout] ... | [INFO] [stdout] 69 | | ) [INFO] [stdout] 70 | | } [INFO] [stdout] | |_^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::mem` [INFO] [stdout] --> basic-exercises/src/std_box_base.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::mem; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> basic-exercises/src/main.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | #![warn(unused_imports)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> basic-exercises/src/std_hashmap_base.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashSet` [INFO] [stdout] --> basic-exercises/src/std_hashset_base.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::HashSet; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::sync::mpsc` [INFO] [stdout] --> basic-exercises/src/std_misc_channels_base.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::sync::mpsc; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Receiver`, `Sender` [INFO] [stdout] --> basic-exercises/src/std_misc_channels_base.rs:2:23 [INFO] [stdout] | [INFO] [stdout] 2 | use std::sync::mpsc::{Receiver, Sender}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> basic-exercises/src/std_misc_channels_base.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> basic-exercises/src/std_misc_env_arg_base.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fs` [INFO] [stdout] --> basic-exercises/src/std_misc_io_fs_base.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fs; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::os::unix` [INFO] [stdout] --> basic-exercises/src/std_misc_io_fs_base.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::os::unix; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> basic-exercises/src/std_misc_path_file_base.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fs::File` [INFO] [stdout] --> basic-exercises/src/std_misc_path_file_base.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::fs::File; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::prelude::*` [INFO] [stdout] --> basic-exercises/src/std_misc_path_file_base.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::io::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::path::Path` [INFO] [stdout] --> basic-exercises/src/std_misc_path_file_base.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::path::Path; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> basic-exercises/src/std_misc_process_base.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::prelude::*` [INFO] [stdout] --> basic-exercises/src/std_misc_process_base.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Command`, `Stdio` [INFO] [stdout] --> basic-exercises/src/std_misc_process_base.rs:3:20 [INFO] [stdout] | [INFO] [stdout] 3 | use std::process::{Command, Stdio}; [INFO] [stdout] | ^^^^^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> basic-exercises/src/std_misc_threads_base.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling time v0.2.22 [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> basic-exercises/src/main.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | #![warn(unused_imports)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> basic-exercises/src/closure_base.rs:1:27 [INFO] [stdout] | [INFO] [stdout] 1 | fn counter(i: i32) -> Box i32> { [INFO] [stdout] | ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> basic-exercises/src/collection_types.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused label [INFO] [stdout] --> basic-exercises/src/loops.rs:14:17 [INFO] [stdout] | [INFO] [stdout] 14 | 'second_loop: loop { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Receiver`, `Sender` [INFO] [stdout] --> basic-exercises/src/std_misc_channels_base.rs:2:23 [INFO] [stdout] | [INFO] [stdout] 2 | use std::sync::mpsc::{Receiver, Sender}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> basic-exercises/src/std_misc_env_arg_base.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> basic-exercises/src/std_vector_base.rs:72:10 [INFO] [stdout] | [INFO] [stdout] 72 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> basic-exercises/src/struct_base.rs:48:20 [INFO] [stdout] | [INFO] [stdout] 48 | struct A {}; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling nom v5.1.2 [INFO] [stderr] Checking tracing-core v0.1.17 [INFO] [stdout] warning: unused variable: `population` [INFO] [stdout] --> basic-exercises/src/destructuring_base.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | population, [INFO] [stdout] | ^^^^^^^^^^ help: try ignoring the field: `population: _` [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> basic-exercises/src/main.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | #![warn(unused_variables)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `date_founded` [INFO] [stdout] --> basic-exercises/src/destructuring_base.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | date_founded, [INFO] [stdout] | ^^^^^^^^^^^^ help: try ignoring the field: `date_founded: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling cookie v0.14.3 [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> basic-exercises/src/std_result_base.rs:86:28 [INFO] [stdout] | [INFO] [stdout] 86 | Err(why) => panic!(match why { [INFO] [stdout] | ____________________________^ [INFO] [stdout] 87 | | checked::MathError::NegativeLogarithm => "logarithm of negative number", [INFO] [stdout] 88 | | checked::MathError::DivisionByZero => "division by zero", [INFO] [stdout] 89 | | checked::MathError::NegativeSquareRoot => "square root of negative number", [INFO] [stdout] 90 | | }), [INFO] [stdout] | |_________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_fmt_panic)]` on by default [INFO] [stdout] = note: this is no longer accepted in Rust 2021 [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 86 | Err(why) => panic!("{}", match why { [INFO] [stdout] | ^^^^^ [INFO] [stdout] help: or use std::panic::panic_any instead [INFO] [stdout] | [INFO] [stdout] 86 | Err(why) => std::panic::panic_any(match why { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 25 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Checking lru-cache v0.1.2 [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> basic-exercises/src/std_misc_path_file_base.rs:42:69 [INFO] [stdout] | [INFO] [stdout] 42 | Err(why) => panic!("couldn't open {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> basic-exercises/src/std_misc_path_file_base.rs:49:69 [INFO] [stdout] | [INFO] [stdout] 49 | Err(why) => panic!("couldn't read {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> basic-exercises/src/std_misc_path_file_base.rs:72:71 [INFO] [stdout] | [INFO] [stdout] 72 | Err(why) => panic!("couldn't create {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> basic-exercises/src/std_misc_path_file_base.rs:78:73 [INFO] [stdout] | [INFO] [stdout] 78 | Err(why) => panic!("couldn't write to {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> basic-exercises/src/std_misc_process_base.rs:37:61 [INFO] [stdout] | [INFO] [stdout] 37 | Err(why) => panic!("couldn't spawn wc: {}", why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> basic-exercises/src/std_misc_process_base.rs:48:70 [INFO] [stdout] | [INFO] [stdout] 48 | Err(why) => panic!("couldn't write to wc stdin: {}", why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> basic-exercises/src/std_misc_process_base.rs:59:67 [INFO] [stdout] | [INFO] [stdout] 59 | Err(why) => panic!("couldn't read wc stdout: {}", why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking futures-task v0.3.7 [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> basic-exercises/src/basic_type.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | / if let y = 5 { [INFO] [stdout] 27 | | println!("{}", y); [INFO] [stdout] 28 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(irrefutable_let_patterns)]` on by default [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str1` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:254:17 [INFO] [stdout] | [INFO] [stdout] 254 | let mut str1 = String::from("hello"); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_str1` [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> basic-exercises/src/main.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | #![warn(unused_variables)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:25:13 [INFO] [stdout] | [INFO] [stdout] 25 | let x = 5; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `a` is never read [INFO] [stdout] --> basic-exercises/src/basic_type.rs:84:13 [INFO] [stdout] | [INFO] [stdout] 84 | let mut a: f64 = 1.0; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:85:13 [INFO] [stdout] | [INFO] [stdout] 85 | let b = 2.0f32; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:90:13 [INFO] [stdout] | [INFO] [stdout] 90 | let a = a; //不能赋值 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:99:13 [INFO] [stdout] | [INFO] [stdout] 99 | let b: [u8; 3] = [8, 6, 5]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `slice_complete` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:105:13 [INFO] [stdout] | [INFO] [stdout] 105 | let slice_complete = &arr[..]; // 获取全部元素 [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_slice_complete` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `slice_middle` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:106:13 [INFO] [stdout] | [INFO] [stdout] 106 | let slice_middle = &arr[1..4]; // 获取中间元素，最后取得的 Slice 为 [2, 3, 4] 。切片遵循左 闭右开原则。 [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_slice_middle` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `slice_right` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:107:13 [INFO] [stdout] | [INFO] [stdout] 107 | let slice_right = &arr[1..]; // 最后获得的元素为[2, 3, 4, 5, 6]，长度为 5。 [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_slice_right` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `slice_left` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:108:13 [INFO] [stdout] | [INFO] [stdout] 108 | let slice_left = &arr[..3]; // 最后获得的元素为[1, 2, 3]，长度为 3。 [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_slice_left` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v2` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:112:13 [INFO] [stdout] | [INFO] [stdout] 112 | let v2 = vec![0; 10]; // 声明一个初始长度为 10 的值全为 0 的动态数组 [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_v2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:147:37 [INFO] [stdout] | [INFO] [stdout] 147 | Message::ChangeColor(x, y, z) => println!("{}", x), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `z` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:147:40 [INFO] [stdout] | [INFO] [stdout] 147 | Message::ChangeColor(x, y, z) => println!("{}", x), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:150:36 [INFO] [stdout] | [INFO] [stdout] 150 | Message::Location { x, y } => println!("{}", x), [INFO] [stdout] | ^ help: try ignoring the field: `y: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:168:13 [INFO] [stdout] | [INFO] [stdout] 168 | let d: &'static str = r"abc \n abc"; //等 价于 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> basic-exercises/src/basic_type.rs:169:13 [INFO] [stdout] | [INFO] [stdout] 169 | let c: &'static str = "abc \\n abc"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `number_word_hashmap2` [INFO] [stdout] --> basic-exercises/src/closure_base.rs:51:13 [INFO] [stdout] | [INFO] [stdout] 51 | let number_word_hashmap2: HashMap<_, _> = some_numbers [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_number_word_hashmap2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> basic-exercises/src/collection_types.rs:58:14 [INFO] [stdout] | [INFO] [stdout] 58 | let (a, b, _) = (str_vec[0], str_vec[1], str_vec[2]); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `population` [INFO] [stdout] --> basic-exercises/src/destructuring_base.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | population, [INFO] [stdout] | ^^^^^^^^^^ help: try ignoring the field: `population: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `date_founded` [INFO] [stdout] --> basic-exercises/src/destructuring_base.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | date_founded, [INFO] [stdout] | ^^^^^^^^^^^^ help: try ignoring the field: `date_founded: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i1` [INFO] [stdout] --> basic-exercises/src/enum_base.rs:46:13 [INFO] [stdout] | [INFO] [stdout] 46 | let i1 = IpAddr { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_i1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i2` [INFO] [stdout] --> basic-exercises/src/enum_base.rs:50:13 [INFO] [stdout] | [INFO] [stdout] 50 | let i2 = IpAddr { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_i2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i1` [INFO] [stdout] --> basic-exercises/src/enum_base.rs:60:13 [INFO] [stdout] | [INFO] [stdout] 60 | let i1 = IpAddr2::V4(String::from("127.0.0.1")); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_i1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i2` [INFO] [stdout] --> basic-exercises/src/enum_base.rs:61:13 [INFO] [stdout] | [INFO] [stdout] 61 | let i2 = IpAddr2::V6(String::from("::1")); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_i2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i1` [INFO] [stdout] --> basic-exercises/src/enum_base.rs:68:13 [INFO] [stdout] | [INFO] [stdout] 68 | let i1 = IpAddr3::V4(127, 0, 0, 1); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_i1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i2` [INFO] [stdout] --> basic-exercises/src/enum_base.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | let i2 = IpAddr3::V6(String::from("::1")); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_i2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> basic-exercises/src/fn_base.rs:35:13 [INFO] [stdout] | [INFO] [stdout] 35 | let a: i32 = square(37, 41); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> basic-exercises/src/fn_base.rs:36:13 [INFO] [stdout] | [INFO] [stdout] 36 | let b: f64 = square(37.2, 41.1); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `display` [INFO] [stdout] --> basic-exercises/src/std_misc_path_file_base.rs:18:13 [INFO] [stdout] | [INFO] [stdout] 18 | let display = path.display(); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_display` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_number` [INFO] [stdout] --> basic-exercises/src/std_option_base.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let some_number = Some(5); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_string` [INFO] [stdout] --> basic-exercises/src/std_option_base.rs:20:13 [INFO] [stdout] | [INFO] [stdout] 20 | let some_string = Some(String::from("a string")); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `absent_number` [INFO] [stdout] --> basic-exercises/src/std_option_base.rs:21:13 [INFO] [stdout] | [INFO] [stdout] 21 | let absent_number: Option = None; [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_absent_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> basic-exercises/src/std_vector_base.rs:38:13 [INFO] [stdout] | [INFO] [stdout] 38 | let mut v: Vec = Vec::new(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v1` [INFO] [stdout] --> basic-exercises/src/std_vector_base.rs:43:17 [INFO] [stdout] | [INFO] [stdout] 43 | let v1 = vec![1, 2, 3]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> basic-exercises/src/std_vector_base.rs:74:13 [INFO] [stdout] | [INFO] [stdout] 74 | let c = vec![ [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> basic-exercises/src/struct_base.rs:44:13 [INFO] [stdout] | [INFO] [stdout] 44 | let b = Point(30, 11); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking unicode-normalization v0.1.13 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> basic-exercises/src/basic_type.rs:209:17 [INFO] [stdout] | [INFO] [stdout] 209 | let mut str2 = &mut str1; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> basic-exercises/src/basic_type.rs:213:17 [INFO] [stdout] | [INFO] [stdout] 213 | let mut str3 = &mut str1; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> basic-exercises/src/basic_type.rs:233:17 [INFO] [stdout] | [INFO] [stdout] 233 | let mut v2 = &mut v1; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> basic-exercises/src/basic_type.rs:236:17 [INFO] [stdout] | [INFO] [stdout] 236 | let mut v3 = &mut v1; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> basic-exercises/src/basic_type.rs:254:17 [INFO] [stdout] | [INFO] [stdout] 254 | let mut str1 = String::from("hello"); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> basic-exercises/src/basic_type.rs:274:17 [INFO] [stdout] | [INFO] [stdout] 274 | let mut a = String::from("testa 你好"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> basic-exercises/src/basic_type.rs:275:17 [INFO] [stdout] | [INFO] [stdout] 275 | let mut b = &a[0..4]; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> basic-exercises/src/basic_type.rs:283:21 [INFO] [stdout] | [INFO] [stdout] 283 | let mut a = String::from("testa 你好"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> basic-exercises/src/basic_type.rs:289:21 [INFO] [stdout] | [INFO] [stdout] 289 | let mut b = &mut a; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking http v0.2.1 [INFO] [stderr] Checking bytestring v0.1.5 [INFO] [stderr] Checking tinyvec v1.0.1 [INFO] [stderr] Compiling mysqlclient-sys v0.2.4 [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> basic-exercises/src/std_vector_base.rs:38:13 [INFO] [stdout] | [INFO] [stdout] 38 | let mut v: Vec = Vec::new(); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Checking log v0.4.11 [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> basic-exercises/src/std_result_base.rs:86:28 [INFO] [stdout] | [INFO] [stdout] 86 | Err(why) => panic!(match why { [INFO] [stdout] | ____________________________^ [INFO] [stdout] 87 | | checked::MathError::NegativeLogarithm => "logarithm of negative number", [INFO] [stdout] 88 | | checked::MathError::DivisionByZero => "division by zero", [INFO] [stdout] 89 | | checked::MathError::NegativeSquareRoot => "square root of negative number", [INFO] [stdout] 90 | | }), [INFO] [stdout] | |_________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_fmt_panic)]` on by default [INFO] [stdout] = note: this is no longer accepted in Rust 2021 [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 86 | Err(why) => panic!("{}", match why { [INFO] [stdout] | ^^^^^ [INFO] [stdout] help: or use std::panic::panic_any instead [INFO] [stdout] | [INFO] [stdout] 86 | Err(why) => std::panic::panic_any(match why { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking trpl-webserver v0.1.0 (/opt/rustwide/workdir/example-projects/trpl-webserver) [INFO] [stdout] warning: 63 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling clang-sys v0.29.3 [INFO] [stderr] Checking crc32fast v1.2.1 [INFO] [stderr] Checking crossbeam-utils v0.7.2 [INFO] [stderr] Checking tracing v0.1.21 [INFO] [stderr] Checking aho-corasick v0.7.15 [INFO] [stderr] Checking crossbeam-channel v0.4.4 [INFO] [stderr] Checking idna v0.2.0 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking block-buffer v0.9.0 [INFO] [stderr] Checking digest v0.9.0 [INFO] [stderr] Checking net2 v0.2.35 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking signal-hook-registry v1.2.2 [INFO] [stderr] Checking parking_lot_core v0.8.0 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking getrandom v0.1.15 [INFO] [stderr] Checking backtrace v0.3.54 [INFO] [stderr] Checking hostname v0.3.1 [INFO] [stderr] Checking flate2 v1.0.19 [INFO] [stderr] Checking socket2 v0.3.15 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking time v0.1.44 [INFO] [stderr] Compiling syn v1.0.48 [INFO] [stderr] Checking url v2.1.1 [INFO] [stderr] Compiling jobserver v0.1.21 [INFO] [stderr] Compiling which v3.1.1 [INFO] [stderr] Checking sha-1 v0.9.2 [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Checking mio v0.6.22 [INFO] [stderr] Checking resolv-conf v0.6.3 [INFO] [stderr] Checking threadpool v1.8.1 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking parking_lot v0.11.0 [INFO] [stderr] Checking regex v1.4.2 [INFO] [stderr] Compiling clap v2.33.3 [INFO] [stderr] Compiling cc v1.0.61 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking scheduled-thread-pool v0.2.5 [INFO] [stderr] Checking r2d2 v0.8.9 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking mio-uds v0.6.8 [INFO] [stderr] Checking tokio v0.2.22 [INFO] [stderr] Compiling cexpr v0.4.0 [INFO] [stderr] Checking env_logger v0.8.1 [INFO] [stderr] Checking env_logger v0.7.1 [INFO] [stderr] Compiling brotli-sys v0.3.2 [INFO] [stderr] Compiling libloading v0.5.2 [INFO] [stderr] Checking brotli2 v0.3.2 [INFO] [stderr] Checking tokio-util v0.3.1 [INFO] [stderr] Compiling synstructure v0.12.4 [INFO] [stderr] Compiling pin-project-internal v1.0.1 [INFO] [stderr] Compiling futures-macro v0.3.7 [INFO] [stderr] Compiling pin-project-internal v0.4.27 [INFO] [stderr] Compiling derive_more v0.99.11 [INFO] [stderr] Compiling actix-macros v0.1.2 [INFO] [stderr] Compiling thiserror-impl v1.0.21 [INFO] [stderr] Compiling async-trait v0.1.41 [INFO] [stderr] Compiling enum-as-inner v0.3.3 [INFO] [stderr] Compiling time-macros-impl v0.1.1 [INFO] [stderr] Compiling actix-web-codegen v0.4.0 [INFO] [stderr] Compiling actix_derive v0.5.0 [INFO] [stderr] Compiling diesel_derives v1.4.1 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] error: could not compile `bindgen` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name bindgen --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bindgen-0.54.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clap"' --cfg 'feature="default"' --cfg 'feature="env_logger"' --cfg 'feature="log"' --cfg 'feature="logging"' --cfg 'feature="runtime"' --cfg 'feature="which"' --cfg 'feature="which-rustfmt"' -C metadata=31ab5d72f8f23d53 -C extra-filename=-31ab5d72f8f23d53 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-fec8e9ae1a67719f.rmeta --extern cexpr=/opt/rustwide/target/debug/deps/libcexpr-670e0f182d57ccf4.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-c4f6196cf7d68209.rmeta --extern clang_sys=/opt/rustwide/target/debug/deps/libclang_sys-ca63a888cc4b32c1.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-57fd3b3794c7529c.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-651a55ae13019525.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-ff2d4c059a61c830.rmeta --extern lazycell=/opt/rustwide/target/debug/deps/liblazycell-0270d9622aadcf14.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-ab1e00c2983c9ba4.rmeta --extern peeking_take_while=/opt/rustwide/target/debug/deps/libpeeking_take_while-1bf032c316e0e4b8.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-68d422dfc8864dc7.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-65304f056af28667.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-e65a273b29c03334.rmeta --extern rustc_hash=/opt/rustwide/target/debug/deps/librustc_hash-79d11b54bd09f8ae.rmeta --extern shlex=/opt/rustwide/target/debug/deps/libshlex-d26ef09508142236.rmeta --extern which=/opt/rustwide/target/debug/deps/libwhich-324d64f4dc78b356.rmeta --cap-lints allow --cap-lints=forbid -L native=/opt/rustwide/target/debug/build/libloading-ad3e9f3cb197bd26/out` (signal: 9, SIGKILL: kill) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "6da250120cd5e3c305543bce4c2dc699e81ada9a81c2e1968aaa07f9c7ce36e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6da250120cd5e3c305543bce4c2dc699e81ada9a81c2e1968aaa07f9c7ce36e0", kill_on_drop: false }` [INFO] [stdout] 6da250120cd5e3c305543bce4c2dc699e81ada9a81c2e1968aaa07f9c7ce36e0