[INFO] updating cached repository https://github.com/Little-Captain/dive-into-rust-of-fcc
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 74cd130b2740ee72d9fecd980fd9e1914f98af75
[INFO] testing Little-Captain/dive-into-rust-of-fcc against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLittle-Captain%2Fdive-into-rust-of-fcc" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Little-Captain/dive-into-rust-of-fcc on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Little-Captain/dive-into-rust-of-fcc
[INFO] finished tweaking git repo https://github.com/Little-Captain/dive-into-rust-of-fcc
[INFO] tweaked toml for git repo https://github.com/Little-Captain/dive-into-rust-of-fcc written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Little-Captain/dive-into-rust-of-fcc already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 27e15738198ac776cb7ffac8859c7526a121c1a29ff3c564c11fc76a0d95bebe
[INFO] running `"docker" "start" "-a" "27e15738198ac776cb7ffac8859c7526a121c1a29ff3c564c11fc76a0d95bebe"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling dive-into-rust-of-fcc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/ch02/third.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let b = (0);
[INFO] [stderr]    |             ^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `dog` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:213:9
[INFO] [stderr]     |
[INFO] [stderr] 213 |         dog = 1,
[INFO] [stderr]     |         ^^^ help: convert the identifier to upper camel case: `Dog`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `cat` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:214:9
[INFO] [stderr]     |
[INFO] [stderr] 214 |         cat = 200,
[INFO] [stderr]     |         ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Cat`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `tiger` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:215:9
[INFO] [stderr]     |
[INFO] [stderr] 215 |         tiger,
[INFO] [stderr]     |         ^^^^^ help: convert the identifier to upper camel case: `Tiger`
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]   --> src/ch03/second.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |             'b: loop {
[INFO] [stderr]    |             ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Iterator` is imported redundantly
[INFO] [stderr]    --> src/ch06/first.rs:225:9
[INFO] [stderr]     |
[INFO] [stderr] 225 |     use std::iter::Iterator;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/ch04/first.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let x: i32 = diverges();
[INFO] [stderr]    |                  ---------- any code following this expression is unreachable
[INFO] [stderr] 67 |     let y: String = diverges();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]  --> src/ch02/first.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut x = 5;
[INFO] [stderr]   |         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `a` is never read
[INFO] [stderr]   --> src/ch02/first.rs:12:10
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (mut a, mut b) = (1, 2);
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `b` is never read
[INFO] [stderr]   --> src/ch02/first.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (mut a, mut b) = (1, 2);
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `var2`
[INFO] [stderr]    --> src/ch02/second.rs:188:9
[INFO] [stderr]     |
[INFO] [stderr] 188 |     let var2: i16 = var1 as i16;
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/ch02/second.rs:190:9
[INFO] [stderr]     |
[INFO] [stderr] 190 |     let a = "some string";
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/ch02/third.rs:132:11
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn f1(value: Inches) {}
[INFO] [stderr]     |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/ch02/third.rs:133:11
[INFO] [stderr]     |
[INFO] [stderr] 133 |     fn f2(value: i32) {}
[INFO] [stderr]     |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch02/third.rs:203:9
[INFO] [stderr]     |
[INFO] [stderr] 203 |     let x: Message = Message::Move { x: 3, y: 4 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/ch02/third.rs:210:9
[INFO] [stderr]     |
[INFO] [stderr] 210 |     let y: BoardGameTurn = BoardGameTurn::Move { squares: 1 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]   --> src/ch03/first.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut x: i32 = 1;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `func` is assigned to, but never used
[INFO] [stderr]   --> src/ch04/first.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut func: fn((i32, i32)) -> i32 = add1;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_func` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `func` is never read
[INFO] [stderr]   --> src/ch04/first.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     func = add2;
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/ch04/first.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let x: i32 = diverges();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/ch04/first.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let y: String = diverges();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/ch04/first.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let p = if x != 100 {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/ch05/first.rs:79:9
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let c = Circle { radius: 2f64 };
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/ch05/first.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |     let c = Circle { radius: 2f64 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ys`
[INFO] [stderr]   --> src/ch06/first.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let ys: [i32; 500] = [0; 500];
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ys`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `xs` is never read
[INFO] [stderr]   --> src/ch06/first.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut xs: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:253:9
[INFO] [stderr]     |
[INFO] [stderr] 253 |     let x = 5_i32; // i32
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:254:9
[INFO] [stderr]     |
[INFO] [stderr] 254 |     let x = &5_i32; // &i32
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:255:9
[INFO] [stderr]     |
[INFO] [stderr] 255 |     let ref x = 5_i32; // &i32
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:257:9
[INFO] [stderr]     |
[INFO] [stderr] 257 |     let ref x = &5_i32; // &&i32
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v` is never read
[INFO] [stderr]    --> src/ch07/second.rs:265:9
[INFO] [stderr]     |
[INFO] [stderr] 265 |     let mut v = vec![1i32, 2, 3];
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 277 |     let mut x: &mut i32;
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: this arithmetic operation will overflow
[INFO] [stderr]    --> src/ch02/second.rs:100:20
[INFO] [stderr]     |
[INFO] [stderr] 100 |     println!("{}", m + n);
[INFO] [stderr]     |                    ^^^^^ attempt to add with overflow
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(arithmetic_overflow)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 33 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
[INFO] running `"docker" "inspect" "27e15738198ac776cb7ffac8859c7526a121c1a29ff3c564c11fc76a0d95bebe"`
[INFO] running `"docker" "rm" "-f" "27e15738198ac776cb7ffac8859c7526a121c1a29ff3c564c11fc76a0d95bebe"`
[INFO] [stdout] 27e15738198ac776cb7ffac8859c7526a121c1a29ff3c564c11fc76a0d95bebe
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stdout] f1c317c574a885e67c02ee006fe43ed677eaf7e7636fb409db5952bf4bc514a8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "f1c317c574a885e67c02ee006fe43ed677eaf7e7636fb409db5952bf4bc514a8"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling dive-into-rust-of-fcc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/ch02/third.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let b = (0);
[INFO] [stderr]    |             ^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `dog` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:213:9
[INFO] [stderr]     |
[INFO] [stderr] 213 |         dog = 1,
[INFO] [stderr]     |         ^^^ help: convert the identifier to upper camel case: `Dog`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `cat` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:214:9
[INFO] [stderr]     |
[INFO] [stderr] 214 |         cat = 200,
[INFO] [stderr]     |         ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Cat`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `tiger` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:215:9
[INFO] [stderr]     |
[INFO] [stderr] 215 |         tiger,
[INFO] [stderr]     |         ^^^^^ help: convert the identifier to upper camel case: `Tiger`
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]   --> src/ch03/second.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |             'b: loop {
[INFO] [stderr]    |             ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Iterator` is imported redundantly
[INFO] [stderr]    --> src/ch06/first.rs:225:9
[INFO] [stderr]     |
[INFO] [stderr] 225 |     use std::iter::Iterator;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/ch04/first.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let x: i32 = diverges();
[INFO] [stderr]    |                  ---------- any code following this expression is unreachable
[INFO] [stderr] 67 |     let y: String = diverges();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]  --> src/ch02/first.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut x = 5;
[INFO] [stderr]   |         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `a` is never read
[INFO] [stderr]   --> src/ch02/first.rs:12:10
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (mut a, mut b) = (1, 2);
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `b` is never read
[INFO] [stderr]   --> src/ch02/first.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (mut a, mut b) = (1, 2);
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `var2`
[INFO] [stderr]    --> src/ch02/second.rs:188:9
[INFO] [stderr]     |
[INFO] [stderr] 188 |     let var2: i16 = var1 as i16;
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/ch02/second.rs:190:9
[INFO] [stderr]     |
[INFO] [stderr] 190 |     let a = "some string";
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/ch02/third.rs:132:11
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn f1(value: Inches) {}
[INFO] [stderr]     |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/ch02/third.rs:133:11
[INFO] [stderr]     |
[INFO] [stderr] 133 |     fn f2(value: i32) {}
[INFO] [stderr]     |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch02/third.rs:203:9
[INFO] [stderr]     |
[INFO] [stderr] 203 |     let x: Message = Message::Move { x: 3, y: 4 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/ch02/third.rs:210:9
[INFO] [stderr]     |
[INFO] [stderr] 210 |     let y: BoardGameTurn = BoardGameTurn::Move { squares: 1 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]   --> src/ch03/first.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut x: i32 = 1;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `func` is assigned to, but never used
[INFO] [stderr]   --> src/ch04/first.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut func: fn((i32, i32)) -> i32 = add1;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_func` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `func` is never read
[INFO] [stderr]   --> src/ch04/first.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     func = add2;
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/ch04/first.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let x: i32 = diverges();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/ch04/first.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let y: String = diverges();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/ch04/first.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let p = if x != 100 {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/ch05/first.rs:79:9
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let c = Circle { radius: 2f64 };
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/ch05/first.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |     let c = Circle { radius: 2f64 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ys`
[INFO] [stderr]   --> src/ch06/first.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let ys: [i32; 500] = [0; 500];
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ys`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `xs` is never read
[INFO] [stderr]   --> src/ch06/first.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut xs: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:253:9
[INFO] [stderr]     |
[INFO] [stderr] 253 |     let x = 5_i32; // i32
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:254:9
[INFO] [stderr]     |
[INFO] [stderr] 254 |     let x = &5_i32; // &i32
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:255:9
[INFO] [stderr]     |
[INFO] [stderr] 255 |     let ref x = 5_i32; // &i32
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:257:9
[INFO] [stderr]     |
[INFO] [stderr] 257 |     let ref x = &5_i32; // &&i32
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v` is never read
[INFO] [stderr]    --> src/ch07/second.rs:265:9
[INFO] [stderr]     |
[INFO] [stderr] 265 |     let mut v = vec![1i32, 2, 3];
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 277 |     let mut x: &mut i32;
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: this arithmetic operation will overflow
[INFO] [stderr]    --> src/ch02/second.rs:100:20
[INFO] [stderr]     |
[INFO] [stderr] 100 |     println!("{}", m + n);
[INFO] [stderr]     |                    ^^^^^ attempt to add with overflow
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(arithmetic_overflow)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 33 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/ch02/third.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let b = (0);
[INFO] [stderr]    |             ^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `dog` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:213:9
[INFO] [stderr]     |
[INFO] [stderr] 213 |         dog = 1,
[INFO] [stderr]     |         ^^^ help: convert the identifier to upper camel case: `Dog`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `cat` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:214:9
[INFO] [stderr]     |
[INFO] [stderr] 214 |         cat = 200,
[INFO] [stderr]     |         ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Cat`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `tiger` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:215:9
[INFO] [stderr]     |
[INFO] [stderr] 215 |         tiger,
[INFO] [stderr]     |         ^^^^^ help: convert the identifier to upper camel case: `Tiger`
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]   --> src/ch03/second.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |             'b: loop {
[INFO] [stderr]    |             ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Iterator` is imported redundantly
[INFO] [stderr]    --> src/ch06/first.rs:225:9
[INFO] [stderr]     |
[INFO] [stderr] 225 |     use std::iter::Iterator;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/ch04/first.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let x: i32 = diverges();
[INFO] [stderr]    |                  ---------- any code following this expression is unreachable
[INFO] [stderr] 67 |     let y: String = diverges();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]  --> src/ch02/first.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut x = 5;
[INFO] [stderr]   |         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `a` is never read
[INFO] [stderr]   --> src/ch02/first.rs:12:10
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (mut a, mut b) = (1, 2);
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `b` is never read
[INFO] [stderr]   --> src/ch02/first.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (mut a, mut b) = (1, 2);
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `var2`
[INFO] [stderr]    --> src/ch02/second.rs:188:9
[INFO] [stderr]     |
[INFO] [stderr] 188 |     let var2: i16 = var1 as i16;
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/ch02/second.rs:190:9
[INFO] [stderr]     |
[INFO] [stderr] 190 |     let a = "some string";
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/ch02/third.rs:132:11
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn f1(value: Inches) {}
[INFO] [stderr]     |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/ch02/third.rs:133:11
[INFO] [stderr]     |
[INFO] [stderr] 133 |     fn f2(value: i32) {}
[INFO] [stderr]     |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch02/third.rs:203:9
[INFO] [stderr]     |
[INFO] [stderr] 203 |     let x: Message = Message::Move { x: 3, y: 4 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/ch02/third.rs:210:9
[INFO] [stderr]     |
[INFO] [stderr] 210 |     let y: BoardGameTurn = BoardGameTurn::Move { squares: 1 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]   --> src/ch03/first.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut x: i32 = 1;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `func` is assigned to, but never used
[INFO] [stderr]   --> src/ch04/first.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut func: fn((i32, i32)) -> i32 = add1;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_func` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `func` is never read
[INFO] [stderr]   --> src/ch04/first.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     func = add2;
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/ch04/first.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let x: i32 = diverges();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/ch04/first.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let y: String = diverges();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/ch04/first.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let p = if x != 100 {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/ch05/first.rs:79:9
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let c = Circle { radius: 2f64 };
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/ch05/first.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |     let c = Circle { radius: 2f64 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ys`
[INFO] [stderr]   --> src/ch06/first.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let ys: [i32; 500] = [0; 500];
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ys`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `xs` is never read
[INFO] [stderr]   --> src/ch06/first.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut xs: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:253:9
[INFO] [stderr]     |
[INFO] [stderr] 253 |     let x = 5_i32; // i32
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:254:9
[INFO] [stderr]     |
[INFO] [stderr] 254 |     let x = &5_i32; // &i32
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:255:9
[INFO] [stderr]     |
[INFO] [stderr] 255 |     let ref x = 5_i32; // &i32
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:257:9
[INFO] [stderr]     |
[INFO] [stderr] 257 |     let ref x = &5_i32; // &&i32
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v` is never read
[INFO] [stderr]    --> src/ch07/second.rs:265:9
[INFO] [stderr]     |
[INFO] [stderr] 265 |     let mut v = vec![1i32, 2, 3];
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 277 |     let mut x: &mut i32;
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: 32 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `"docker" "inspect" "f1c317c574a885e67c02ee006fe43ed677eaf7e7636fb409db5952bf4bc514a8"`
[INFO] running `"docker" "rm" "-f" "f1c317c574a885e67c02ee006fe43ed677eaf7e7636fb409db5952bf4bc514a8"`
[INFO] [stdout] f1c317c574a885e67c02ee006fe43ed677eaf7e7636fb409db5952bf4bc514a8
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 690756ec6b90a6beab839f29dc23315161bff429e249444f5924f8e35b1ca9b6
[INFO] running `"docker" "start" "-a" "690756ec6b90a6beab839f29dc23315161bff429e249444f5924f8e35b1ca9b6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/ch02/third.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let b = (0);
[INFO] [stderr]    |             ^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `dog` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:213:9
[INFO] [stderr]     |
[INFO] [stderr] 213 |         dog = 1,
[INFO] [stderr]     |         ^^^ help: convert the identifier to upper camel case: `Dog`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `cat` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:214:9
[INFO] [stderr]     |
[INFO] [stderr] 214 |         cat = 200,
[INFO] [stderr]     |         ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Cat`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `tiger` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:215:9
[INFO] [stderr]     |
[INFO] [stderr] 215 |         tiger,
[INFO] [stderr]     |         ^^^^^ help: convert the identifier to upper camel case: `Tiger`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/ch02/third.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let b = (0);
[INFO] [stderr]    |             ^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]   --> src/ch03/second.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |             'b: loop {
[INFO] [stderr]    |             ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Iterator` is imported redundantly
[INFO] [stderr]    --> src/ch06/first.rs:225:9
[INFO] [stderr]     |
[INFO] [stderr] 225 |     use std::iter::Iterator;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `dog` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:213:9
[INFO] [stderr]     |
[INFO] [stderr] 213 |         dog = 1,
[INFO] [stderr]     |         ^^^ help: convert the identifier to upper camel case: `Dog`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/ch04/first.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let x: i32 = diverges();
[INFO] [stderr]    |                  ---------- any code following this expression is unreachable
[INFO] [stderr] 67 |     let y: String = diverges();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `cat` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:214:9
[INFO] [stderr]     |
[INFO] [stderr] 214 |         cat = 200,
[INFO] [stderr]     |         ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Cat`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `tiger` should have an upper camel case name
[INFO] [stderr]    --> src/ch02/third.rs:215:9
[INFO] [stderr]     |
[INFO] [stderr] 215 |         tiger,
[INFO] [stderr]     |         ^^^^^ help: convert the identifier to upper camel case: `Tiger`
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]   --> src/ch03/second.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |             'b: loop {
[INFO] [stderr]    |             ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Iterator` is imported redundantly
[INFO] [stderr]    --> src/ch06/first.rs:225:9
[INFO] [stderr]     |
[INFO] [stderr] 225 |     use std::iter::Iterator;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/ch04/first.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let x: i32 = diverges();
[INFO] [stderr]    |                  ---------- any code following this expression is unreachable
[INFO] [stderr] 67 |     let y: String = diverges();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]  --> src/ch02/first.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut x = 5;
[INFO] [stderr]   |         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `a` is never read
[INFO] [stderr]   --> src/ch02/first.rs:12:10
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (mut a, mut b) = (1, 2);
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `b` is never read
[INFO] [stderr]   --> src/ch02/first.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (mut a, mut b) = (1, 2);
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `var2`
[INFO] [stderr]    --> src/ch02/second.rs:188:9
[INFO] [stderr]     |
[INFO] [stderr] 188 |     let var2: i16 = var1 as i16;
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/ch02/second.rs:190:9
[INFO] [stderr]     |
[INFO] [stderr] 190 |     let a = "some string";
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/ch02/third.rs:132:11
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn f1(value: Inches) {}
[INFO] [stderr]     |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/ch02/third.rs:133:11
[INFO] [stderr]     |
[INFO] [stderr] 133 |     fn f2(value: i32) {}
[INFO] [stderr]     |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch02/third.rs:203:9
[INFO] [stderr]     |
[INFO] [stderr] 203 |     let x: Message = Message::Move { x: 3, y: 4 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/ch02/third.rs:210:9
[INFO] [stderr]     |
[INFO] [stderr] 210 |     let y: BoardGameTurn = BoardGameTurn::Move { squares: 1 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]   --> src/ch03/first.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut x: i32 = 1;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `func` is assigned to, but never used
[INFO] [stderr]   --> src/ch04/first.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut func: fn((i32, i32)) -> i32 = add1;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_func` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `func` is never read
[INFO] [stderr]   --> src/ch04/first.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     func = add2;
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/ch04/first.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let x: i32 = diverges();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/ch04/first.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let y: String = diverges();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/ch04/first.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let p = if x != 100 {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/ch05/first.rs:79:9
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let c = Circle { radius: 2f64 };
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/ch05/first.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |     let c = Circle { radius: 2f64 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ys`
[INFO] [stderr]   --> src/ch06/first.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let ys: [i32; 500] = [0; 500];
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ys`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]  --> src/ch02/first.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut x = 5;
[INFO] [stderr]   |         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `xs` is never read
[INFO] [stderr]   --> src/ch06/first.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut xs: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `a` is never read
[INFO] [stderr]   --> src/ch02/first.rs:12:10
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (mut a, mut b) = (1, 2);
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `b` is never read
[INFO] [stderr]   --> src/ch02/first.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (mut a, mut b) = (1, 2);
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `var2`
[INFO] [stderr]    --> src/ch02/second.rs:188:9
[INFO] [stderr]     |
[INFO] [stderr] 188 |     let var2: i16 = var1 as i16;
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:253:9
[INFO] [stderr]     |
[INFO] [stderr] 253 |     let x = 5_i32; // i32
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/ch02/second.rs:190:9
[INFO] [stderr]     |
[INFO] [stderr] 190 |     let a = "some string";
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/ch02/third.rs:132:11
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn f1(value: Inches) {}
[INFO] [stderr]     |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:254:9
[INFO] [stderr]     |
[INFO] [stderr] 254 |     let x = &5_i32; // &i32
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/ch02/third.rs:133:11
[INFO] [stderr]     |
[INFO] [stderr] 133 |     fn f2(value: i32) {}
[INFO] [stderr]     |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch02/third.rs:203:9
[INFO] [stderr]     |
[INFO] [stderr] 203 |     let x: Message = Message::Move { x: 3, y: 4 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/ch02/third.rs:210:9
[INFO] [stderr]     |
[INFO] [stderr] 210 |     let y: BoardGameTurn = BoardGameTurn::Move { squares: 1 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]   --> src/ch03/first.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut x: i32 = 1;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `func` is assigned to, but never used
[INFO] [stderr]   --> src/ch04/first.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut func: fn((i32, i32)) -> i32 = add1;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_func` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `func` is never read
[INFO] [stderr]   --> src/ch04/first.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     func = add2;
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/ch04/first.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let x: i32 = diverges();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/ch04/first.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let y: String = diverges();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/ch04/first.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let p = if x != 100 {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/ch05/first.rs:79:9
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let c = Circle { radius: 2f64 };
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/ch05/first.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |     let c = Circle { radius: 2f64 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ys`
[INFO] [stderr]   --> src/ch06/first.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let ys: [i32; 500] = [0; 500];
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ys`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `xs` is never read
[INFO] [stderr]   --> src/ch06/first.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut xs: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:253:9
[INFO] [stderr]     |
[INFO] [stderr] 253 |     let x = 5_i32; // i32
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:254:9
[INFO] [stderr]     |
[INFO] [stderr] 254 |     let x = &5_i32; // &i32
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:255:9
[INFO] [stderr]     |
[INFO] [stderr] 255 |     let ref x = 5_i32; // &i32
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:257:9
[INFO] [stderr]     |
[INFO] [stderr] 257 |     let ref x = &5_i32; // &&i32
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v` is never read
[INFO] [stderr]    --> src/ch07/second.rs:265:9
[INFO] [stderr]     |
[INFO] [stderr] 265 |     let mut v = vec![1i32, 2, 3];
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 277 |     let mut x: &mut i32;
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: this arithmetic operation will overflow
[INFO] [stderr]    --> src/ch02/second.rs:100:20
[INFO] [stderr]     |
[INFO] [stderr] 100 |     println!("{}", m + n);
[INFO] [stderr]     |                    ^^^^^ attempt to add with overflow
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(arithmetic_overflow)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 33 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:255:9
[INFO] [stderr]     |
[INFO] [stderr] 255 |     let ref x = 5_i32; // &i32
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:257:9
[INFO] [stderr]     |
[INFO] [stderr] 257 |     let ref x = &5_i32; // &&i32
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v` is never read
[INFO] [stderr]    --> src/ch07/second.rs:265:9
[INFO] [stderr]     |
[INFO] [stderr] 265 |     let mut v = vec![1i32, 2, 3];
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/ch07/second.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 277 |     let mut x: &mut i32;
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: 32 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/dive_into_rust_of_fcc-0c206e1d148dc116
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/dive_into_rust_of_fcc-561ab7a575d6417c
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dive-into-rust-of-fcc
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] warning: variant `dog` should have an upper camel case name
[INFO] [stderr]    --> /opt/rustwide/workdir/src/ch02/third.rs:213:9
[INFO] [stderr]     |
[INFO] [stderr] 213 |         dog = 1,
[INFO] [stderr]     |         ^^^ help: convert the identifier to upper camel case: `Dog`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `cat` should have an upper camel case name
[INFO] [stderr]    --> /opt/rustwide/workdir/src/ch02/third.rs:214:9
[INFO] [stderr]     |
[INFO] [stderr] 214 |         cat = 200,
[INFO] [stderr]     |         ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Cat`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `tiger` should have an upper camel case name
[INFO] [stderr]    --> /opt/rustwide/workdir/src/ch02/third.rs:215:9
[INFO] [stderr]     |
[INFO] [stderr] 215 |         tiger,
[INFO] [stderr]     |         ^^^^^ help: convert the identifier to upper camel case: `Tiger`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "690756ec6b90a6beab839f29dc23315161bff429e249444f5924f8e35b1ca9b6"`
[INFO] running `"docker" "rm" "-f" "690756ec6b90a6beab839f29dc23315161bff429e249444f5924f8e35b1ca9b6"`
[INFO] [stdout] 690756ec6b90a6beab839f29dc23315161bff429e249444f5924f8e35b1ca9b6