[INFO] cloning repository https://github.com/suhanyujie/rust-cookbook-note
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/suhanyujie/rust-cookbook-note" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuhanyujie%2Frust-cookbook-note", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuhanyujie%2Frust-cookbook-note'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66acbfcbeae3d5f99905786b9c84192c43e47560
[INFO] building suhanyujie/rust-cookbook-note against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuhanyujie%2Frust-cookbook-note" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/suhanyujie/rust-cookbook-note on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/suhanyujie/rust-cookbook-note
[INFO] finished tweaking git repo https://github.com/suhanyujie/rust-cookbook-note
[INFO] tweaked toml for git repo https://github.com/suhanyujie/rust-cookbook-note written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/suhanyujie/rust-cookbook-note already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c1c6b059bc87a3ca3ac4faa91f6c037a9ebb92bfb7c098f6c1a2c1917005fc9
[INFO] running `Command { std: "docker" "start" "-a" "6c1c6b059bc87a3ca3ac4faa91f6c037a9ebb92bfb7c098f6c1a2c1917005fc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c1c6b059bc87a3ca3ac4faa91f6c037a9ebb92bfb7c098f6c1a2c1917005fc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c1c6b059bc87a3ca3ac4faa91f6c037a9ebb92bfb7c098f6c1a2c1917005fc9", kill_on_drop: false }`
[INFO] [stdout] 6c1c6b059bc87a3ca3ac4faa91f6c037a9ebb92bfb7c098f6c1a2c1917005fc9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07e1dbad42ce24dabf7ffe9deab5bd4612a137130e2ef31d60be82c948d3d653
[INFO] running `Command { std: "docker" "start" "-a" "07e1dbad42ce24dabf7ffe9deab5bd4612a137130e2ef31d60be82c948d3d653", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling chrono v0.4.13
[INFO] [stderr]    Compiling cookbook v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/notes/alpha.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/notes/copy_trait.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Div`, `Mul`, and `Sub`
[INFO] [stdout]  --> src/notes/op_rhs.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Add, Div, Mul, Sub};
[INFO] [stdout]   |                     ^^^  ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `notes::alpha`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use notes::alpha;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate-level attribute should be in the root module
[INFO] [stdout]  --> src/notes/alpha.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(dyn_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     process::exit(-1);
[INFO] [stdout]    |     ----------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 24 |     command::try_with_test_param();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/algorithm.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut rng = rand::thread_rng();
[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: unused variable: `status`
[INFO] [stdout]   --> src/command.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |             status,
[INFO] [stdout]    |             ^^^^^^ help: try ignoring the field: `status: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stderr`
[INFO] [stdout]   --> src/command.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             stderr,
[INFO] [stdout]    |             ^^^^^^ help: try ignoring the field: `stderr: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p_duck`
[INFO] [stdout]   --> src/notes/alpha.rs:24:22
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn print_traitobject(p_duck: &dyn Bird) {
[INFO] [stdout]    |                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_p_duck`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d3`
[INFO] [stdout]   --> src/notes/alpha.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let d3 = d2 as &dyn Bird;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_d3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]   --> src/notes/copy_trait.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let v2 = v1;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/notes/process_data_competition.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for i in 0..COUNT {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/notes/process_data_competition.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         for i in 0..COUNT {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/notes/process_data_competition.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         MyData(data1) => {
[INFO] [stdout]    |         ------------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 83 |         _ => {
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/notes/process_data_competition.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 for i in 0..COUNT {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/notes/process_data_competition.rs:74:21
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 for i in 0..COUNT {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_a_u8_num` is never used
[INFO] [stdout]   --> src/algorithm.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn gen_a_u8_num() -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_a_i32_num` is never used
[INFO] [stdout]   --> src/algorithm.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn gen_a_i32_num() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_random_within_range` is never used
[INFO] [stdout]   --> src/algorithm.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn gen_random_within_range(min: isize, max: isize) -> isize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/algorithm.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | struct Point {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 71 |     x: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 72 |     y: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_random_string` is never used
[INFO] [stdout]   --> src/algorithm.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub fn get_random_string(length: u8) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_random_string_from_customer_str` is never used
[INFO] [stdout]    --> src/algorithm.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 111 | pub fn get_random_string_from_customer_str(length: u8) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Bird` is never used
[INFO] [stdout]  --> src/notes/alpha.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait Bird {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Duck` is never constructed
[INFO] [stdout]  --> src/notes/alpha.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Duck;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Swan` is never constructed
[INFO] [stdout]   --> src/notes/alpha.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Swan;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_traitobject` is never used
[INFO] [stdout]   --> src/notes/alpha.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn print_traitobject(p_duck: &dyn Bird) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/notes/alpha.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x_value` and `y_value` are never read
[INFO] [stdout]   --> src/notes/copy_trait.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Point {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 11 |     x_value: i32,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 12 |     y_value: i32,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyData0` is never constructed
[INFO] [stdout]   --> src/notes/process_data_competition.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct MyData0(Rc<isize>);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/notes/process_data_competition.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl MyData0 {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 18 |     pub fn new(num: isize) -> MyData0 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/notes/process_data_competition.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct MyData(Arc<Mutex<isize>>);
[INFO] [stdout]    |            ------ ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `MyData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_resolve_competition` is never used
[INFO] [stdout]   --> src/notes/process_data_competition.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn test_resolve_competition() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simple_bubble` is never used
[INFO] [stdout]  --> src/notes/sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn simple_bubble(arr: &mut Vec<i32>) -> &Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insert` is never used
[INFO] [stdout]   --> src/notes/sort.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn insert(arr: &mut Vec<i32>) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shell_sort` is never used
[INFO] [stdout]   --> src/notes/sort.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn shell_sort(arr: &Vec<i32>) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_shell_addition_rate` is never used
[INFO] [stdout]   --> src/notes/sort.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn get_shell_addition_rate(l: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one_file_func` is never used
[INFO] [stdout]  --> src/notes/test_module/one_file.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn one_file_func() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Human` is never used
[INFO] [stdout]  --> src/notes/test_module/one_file.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | trait Human {
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `name`, and `age` are never read
[INFO] [stdout]   --> src/notes/test_module/one_file.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Stu {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 13 |     id: i32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 14 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 15 |     age: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stu` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.89s
[INFO] running `Command { std: "docker" "inspect" "07e1dbad42ce24dabf7ffe9deab5bd4612a137130e2ef31d60be82c948d3d653", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07e1dbad42ce24dabf7ffe9deab5bd4612a137130e2ef31d60be82c948d3d653", kill_on_drop: false }`
[INFO] [stdout] 07e1dbad42ce24dabf7ffe9deab5bd4612a137130e2ef31d60be82c948d3d653
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0850d7edf93ee369e12ab2aeba72d4ad2eafec5c6668d86157e60810c66f005f
[INFO] running `Command { std: "docker" "start" "-a" "0850d7edf93ee369e12ab2aeba72d4ad2eafec5c6668d86157e60810c66f005f", kill_on_drop: false }`
[INFO] [stderr]    Compiling cookbook v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/notes/alpha.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/notes/copy_trait.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Div`, `Mul`, and `Sub`
[INFO] [stdout]  --> src/notes/op_rhs.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Add, Div, Mul, Sub};
[INFO] [stdout]   |                     ^^^  ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `notes::alpha`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use notes::alpha;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate-level attribute should be in the root module
[INFO] [stdout]  --> src/notes/alpha.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(dyn_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     process::exit(-1);
[INFO] [stdout]    |     ----------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 24 |     command::try_with_test_param();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/algorithm.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut rng = rand::thread_rng();
[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: unused variable: `status`
[INFO] [stdout]   --> src/command.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |             status,
[INFO] [stdout]    |             ^^^^^^ help: try ignoring the field: `status: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stderr`
[INFO] [stdout]   --> src/command.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             stderr,
[INFO] [stdout]    |             ^^^^^^ help: try ignoring the field: `stderr: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p_duck`
[INFO] [stdout]   --> src/notes/alpha.rs:24:22
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn print_traitobject(p_duck: &dyn Bird) {
[INFO] [stdout]    |                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_p_duck`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d3`
[INFO] [stdout]   --> src/notes/alpha.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let d3 = d2 as &dyn Bird;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_d3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]   --> src/notes/copy_trait.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let v2 = v1;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/notes/process_data_competition.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for i in 0..COUNT {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/notes/process_data_competition.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         for i in 0..COUNT {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/notes/process_data_competition.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         MyData(data1) => {
[INFO] [stdout]    |         ------------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 83 |         _ => {
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/notes/process_data_competition.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 for i in 0..COUNT {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/notes/process_data_competition.rs:74:21
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 for i in 0..COUNT {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_a_u8_num` is never used
[INFO] [stdout]   --> src/algorithm.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn gen_a_u8_num() -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_a_i32_num` is never used
[INFO] [stdout]   --> src/algorithm.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn gen_a_i32_num() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_random_within_range` is never used
[INFO] [stdout]   --> src/algorithm.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn gen_random_within_range(min: isize, max: isize) -> isize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/algorithm.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | struct Point {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 71 |     x: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 72 |     y: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Bird` is never used
[INFO] [stdout]  --> src/notes/alpha.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait Bird {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Duck` is never constructed
[INFO] [stdout]  --> src/notes/alpha.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Duck;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Swan` is never constructed
[INFO] [stdout]   --> src/notes/alpha.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Swan;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_traitobject` is never used
[INFO] [stdout]   --> src/notes/alpha.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn print_traitobject(p_duck: &dyn Bird) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/notes/alpha.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x_value` and `y_value` are never read
[INFO] [stdout]   --> src/notes/copy_trait.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Point {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 11 |     x_value: i32,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 12 |     y_value: i32,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyData0` is never constructed
[INFO] [stdout]   --> src/notes/process_data_competition.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct MyData0(Rc<isize>);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/notes/process_data_competition.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl MyData0 {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 18 |     pub fn new(num: isize) -> MyData0 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/notes/process_data_competition.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct MyData(Arc<Mutex<isize>>);
[INFO] [stdout]    |            ------ ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `MyData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_resolve_competition` is never used
[INFO] [stdout]   --> src/notes/process_data_competition.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn test_resolve_competition() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shell_sort` is never used
[INFO] [stdout]   --> src/notes/sort.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn shell_sort(arr: &Vec<i32>) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_shell_addition_rate` is never used
[INFO] [stdout]   --> src/notes/sort.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn get_shell_addition_rate(l: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one_file_func` is never used
[INFO] [stdout]  --> src/notes/test_module/one_file.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn one_file_func() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Human` is never used
[INFO] [stdout]  --> src/notes/test_module/one_file.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | trait Human {
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `name`, and `age` are never read
[INFO] [stdout]   --> src/notes/test_module/one_file.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Stu {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 13 |     id: i32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 14 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 15 |     age: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stu` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "0850d7edf93ee369e12ab2aeba72d4ad2eafec5c6668d86157e60810c66f005f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0850d7edf93ee369e12ab2aeba72d4ad2eafec5c6668d86157e60810c66f005f", kill_on_drop: false }`
[INFO] [stdout] 0850d7edf93ee369e12ab2aeba72d4ad2eafec5c6668d86157e60810c66f005f