[INFO] crate tao-of-rust 0.1.0 is already in cache
[INFO] extracting crate tao-of-rust 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/tao-of-rust/0.1.0
[INFO] extracting crate tao-of-rust 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/tao-of-rust/0.1.0
[INFO] validating manifest of tao-of-rust-0.1.0 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tao-of-rust-0.1.0 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tao-of-rust-0.1.0
[INFO] finished frobbing tao-of-rust-0.1.0
[INFO] frobbed toml for tao-of-rust-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/tao-of-rust/0.1.0/Cargo.toml
[INFO] started frobbing tao-of-rust-0.1.0
[INFO] finished frobbing tao-of-rust-0.1.0
[INFO] frobbed toml for tao-of-rust-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/tao-of-rust/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting tao-of-rust-0.1.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/tao-of-rust/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ea68f8ead92b877531e30c3387d832dad5ef6187d0bae9889f80bcd7250e6dfa
[INFO] running `"docker" "start" "-a" "ea68f8ead92b877531e30c3387d832dad5ef6187d0bae9889f80bcd7250e6dfa"`
[INFO] [stderr]     Checking csv_challenge v0.1.0
[INFO] [stderr]     Checking failures_crate v0.1.0
[INFO] [stderr]     Checking tao-of-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch1/mod.rs:16:24
[INFO] [stderr]    |
[INFO] [stderr] 16 |     println!("第1章：{}", "新时代的语言");
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::print_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch2/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第2章：{}", "语言精要");
[INFO] [stderr]    |                           ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/ch2/binding.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let e = &42;
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch2/primitives.rs:96:20
[INFO] [stderr]    |
[INFO] [stderr] 96 |     println!("{}", '\'');
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch2/primitives.rs:97:20
[INFO] [stderr]    |
[INFO] [stderr] 97 |     println!("{}", '\\');
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch2/primitives.rs:98:20
[INFO] [stderr]    |
[INFO] [stderr] 98 |     println!("{}", '\n');
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch2/primitives.rs:99:20
[INFO] [stderr]    |
[INFO] [stderr] 99 |     println!("{}", '\r');
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]    --> src/ch2/primitives.rs:100:20
[INFO] [stderr]     |
[INFO] [stderr] 100 |     println!("{}", '\t');
[INFO] [stderr]     |                    ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ch2/structs.rs:49:23
[INFO] [stderr]    |
[INFO] [stderr] 49 |         return People{name: name, gender: gender};
[INFO] [stderr]    |                       ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ch2/structs.rs:49:35
[INFO] [stderr]    |
[INFO] [stderr] 49 |         return People{name: name, gender: gender};
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^ help: replace it with: `gender`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch3/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第3章：{}", "类型系统");
[INFO] [stderr]    |                           ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ch3/generics.rs:61:19
[INFO] [stderr]    |
[INFO] [stderr] 61 |             Point{x: x, y: y}
[INFO] [stderr]    |                   ^^^^ help: replace it with: `x`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ch3/generics.rs:61:25
[INFO] [stderr]    |
[INFO] [stderr] 61 |             Point{x: x, y: y}
[INFO] [stderr]    |                         ^^^^ help: replace it with: `y`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/ch3/traits.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 |     let x: i32 = a.my_add(b);
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]    --> src/ch3/traits.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |     let y: i32 = c.my_add(d);
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch4/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第4章：{}", "内存管理");
[INFO] [stderr]    |                           ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch5/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第5章：{}", "所有权系统");
[INFO] [stderr]    |                           ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch6/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第6章：{}", "函数、闭包和迭代器");
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/ch6/closures.rs:158:31
[INFO] [stderr]     |
[INFO] [stderr] 158 |         let mut c = Closure { env_var: env_var };
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^ help: replace it with: `env_var`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/ch6/closures.rs:163:31
[INFO] [stderr]     |
[INFO] [stderr] 163 |         let mut c = Closure { env_var: env_var };
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^ help: replace it with: `env_var`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch7/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第7章：{}", "结构化编程");
[INFO] [stderr]    |                           ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch8/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第8章：{}", "字符串与集合");
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch9/mod.rs:17:24
[INFO] [stderr]    |
[INFO] [stderr] 17 |     println!("第9章：{}", "构建健壮的程序");
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch10/mod.rs:17:25
[INFO] [stderr]    |
[INFO] [stderr] 17 |     println!("第10章：{}", "模块化开发");
[INFO] [stderr]    |                            ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch11/mod.rs:15:25
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第11章：{}", "安全并发");
[INFO] [stderr]    |                            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch12/mod.rs:15:25
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第12章：{}", "元编程");
[INFO] [stderr]    |                            ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch13/mod.rs:15:25
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第13章：{}", "超越安全边界");
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/appendix/mod.rs:17:27
[INFO] [stderr]    |
[INFO] [stderr] 17 |     println!("新时代的语言：{}", "Rust");
[INFO] [stderr]    |                                  ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch1/mod.rs:16:24
[INFO] [stderr]    |
[INFO] [stderr] 16 |     println!("第1章：{}", "新时代的语言");
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::print_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch2/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第2章：{}", "语言精要");
[INFO] [stderr]    |                           ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/ch2/binding.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let e = &42;
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch2/primitives.rs:96:20
[INFO] [stderr]    |
[INFO] [stderr] 96 |     println!("{}", '\'');
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch2/primitives.rs:97:20
[INFO] [stderr]    |
[INFO] [stderr] 97 |     println!("{}", '\\');
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch2/primitives.rs:98:20
[INFO] [stderr]    |
[INFO] [stderr] 98 |     println!("{}", '\n');
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch2/primitives.rs:99:20
[INFO] [stderr]    |
[INFO] [stderr] 99 |     println!("{}", '\r');
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]    --> src/ch2/primitives.rs:100:20
[INFO] [stderr]     |
[INFO] [stderr] 100 |     println!("{}", '\t');
[INFO] [stderr]     |                    ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ch2/structs.rs:49:23
[INFO] [stderr]    |
[INFO] [stderr] 49 |         return People{name: name, gender: gender};
[INFO] [stderr]    |                       ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ch2/structs.rs:49:35
[INFO] [stderr]    |
[INFO] [stderr] 49 |         return People{name: name, gender: gender};
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^ help: replace it with: `gender`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch3/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第3章：{}", "类型系统");
[INFO] [stderr]    |                           ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ch3/generics.rs:61:19
[INFO] [stderr]    |
[INFO] [stderr] 61 |             Point{x: x, y: y}
[INFO] [stderr]    |                   ^^^^ help: replace it with: `x`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ch3/generics.rs:61:25
[INFO] [stderr]    |
[INFO] [stderr] 61 |             Point{x: x, y: y}
[INFO] [stderr]    |                         ^^^^ help: replace it with: `y`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/ch3/traits.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 |     let x: i32 = a.my_add(b);
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]    --> src/ch3/traits.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |     let y: i32 = c.my_add(d);
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch4/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第4章：{}", "内存管理");
[INFO] [stderr]    |                           ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch5/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第5章：{}", "所有权系统");
[INFO] [stderr]    |                           ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch6/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第6章：{}", "函数、闭包和迭代器");
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/ch6/closures.rs:158:31
[INFO] [stderr]     |
[INFO] [stderr] 158 |         let mut c = Closure { env_var: env_var };
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^ help: replace it with: `env_var`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/ch6/closures.rs:163:31
[INFO] [stderr]     |
[INFO] [stderr] 163 |         let mut c = Closure { env_var: env_var };
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^ help: replace it with: `env_var`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch7/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第7章：{}", "结构化编程");
[INFO] [stderr]    |                           ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch8/mod.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第8章：{}", "字符串与集合");
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch9/mod.rs:17:24
[INFO] [stderr]    |
[INFO] [stderr] 17 |     println!("第9章：{}", "构建健壮的程序");
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch10/mod.rs:17:25
[INFO] [stderr]    |
[INFO] [stderr] 17 |     println!("第10章：{}", "模块化开发");
[INFO] [stderr]    |                            ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch11/mod.rs:15:25
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第11章：{}", "安全并发");
[INFO] [stderr]    |                            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch12/mod.rs:15:25
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第12章：{}", "元编程");
[INFO] [stderr]    |                            ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/ch13/mod.rs:15:25
[INFO] [stderr]    |
[INFO] [stderr] 15 |     println!("第13章：{}", "超越安全边界");
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/appendix/mod.rs:17:27
[INFO] [stderr]    |
[INFO] [stderr] 17 |     println!("新时代的语言：{}", "Rust");
[INFO] [stderr]    |                                  ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(const_fn)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(never_type)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(specialization)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(unboxed_closures, fn_traits)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `tao-of-rust`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(const_fn)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(never_type)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(specialization)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(unboxed_closures, fn_traits)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `tao-of-rust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ea68f8ead92b877531e30c3387d832dad5ef6187d0bae9889f80bcd7250e6dfa"`
[INFO] running `"docker" "rm" "-f" "ea68f8ead92b877531e30c3387d832dad5ef6187d0bae9889f80bcd7250e6dfa"`
[INFO] [stdout] ea68f8ead92b877531e30c3387d832dad5ef6187d0bae9889f80bcd7250e6dfa