[INFO] cloning repository https://github.com/munmust/rust_demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/munmust/rust_demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmunmust%2Frust_demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmunmust%2Frust_demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 845fbd586dc07a278bc5a20fe9d20a0f39b88737
[INFO] checking munmust/rust_demo against master#73252d51d13c0e4f872c3c51defcf48174860ef6 for pr-119989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmunmust%2Frust_demo" "/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/munmust/rust_demo on toolchain 73252d51d13c0e4f872c3c51defcf48174860ef6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+73252d51d13c0e4f872c3c51defcf48174860ef6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/munmust/rust_demo
[INFO] finished tweaking git repo https://github.com/munmust/rust_demo
[INFO] tweaked toml for git repo https://github.com/munmust/rust_demo written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/munmust/rust_demo 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" "+73252d51d13c0e4f872c3c51defcf48174860ef6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking munmust/rust_demo against try#5d004039df46bb665b8ed6385386e3b1b007a6a8 for pr-119989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmunmust%2Frust_demo" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/munmust/rust_demo on toolchain 5d004039df46bb665b8ed6385386e3b1b007a6a8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5d004039df46bb665b8ed6385386e3b1b007a6a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/munmust/rust_demo
[INFO] finished tweaking git repo https://github.com/munmust/rust_demo
[INFO] tweaked toml for git repo https://github.com/munmust/rust_demo written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/munmust/rust_demo 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" "+5d004039df46bb665b8ed6385386e3b1b007a6a8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5d004039df46bb665b8ed6385386e3b1b007a6a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef133781c3136d5a8d1311f58220166946871897f60f6dca17fa36102d001375
[INFO] running `Command { std: "docker" "start" "-a" "ef133781c3136d5a8d1311f58220166946871897f60f6dca17fa36102d001375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef133781c3136d5a8d1311f58220166946871897f60f6dca17fa36102d001375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef133781c3136d5a8d1311f58220166946871897f60f6dca17fa36102d001375", kill_on_drop: false }`
[INFO] [stdout] ef133781c3136d5a8d1311f58220166946871897f60f6dca17fa36102d001375
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5d004039df46bb665b8ed6385386e3b1b007a6a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b32926a89ab0c71ddd75f0afe7085eefd37071a1c550398be00abf7b8f19b1d4
[INFO] running `Command { std: "docker" "start" "-a" "b32926a89ab0c71ddd75f0afe7085eefd37071a1c550398be00abf7b8f19b1d4", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_len v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/owner_ship.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let i = 20;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/owner_ship.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mut j = 5;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/owner_ship.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mut j = 5;
[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: `i`
[INFO] [stdout]   --> src/owner_ship.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let i = 20;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/owner_ship.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mut j = 5;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/owner_ship.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mut j = 5;
[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: `str2`
[INFO] [stdout]    --> src/owner_ship.rs:124:22
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn T2(strs: &String, str2: &mut String) -> usize {
[INFO] [stdout]     |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_str2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str2`
[INFO] [stdout]    --> src/owner_ship.rs:124:22
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn T2(strs: &String, str2: &mut String) -> usize {
[INFO] [stdout]     |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_str2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/trait_t.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let p = Point::new(1, 2);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/trait_t.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let p1 = Point::new('1', '2');
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/trait_t.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let p = Point::new(1, 2);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/trait_t.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let p1 = Point::new('1', '2');
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]  --> src/life_time.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct A<'a> {
[INFO] [stdout]   |        ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `split_first` and `new` are never used
[INFO] [stdout]   --> src/life_time.rs:8:8
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl<'a> A<'a> {
[INFO] [stdout]    | -------------- associated functions in this implementation
[INFO] [stdout] 8  |     fn split_first(s: &'a str) -> &'a str {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn new(s: &'a str) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `life_time` is never used
[INFO] [stdout]   --> src/life_time.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn life_time() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `b` are never read
[INFO] [stdout]  --> src/owner_ship.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct A {
[INFO] [stdout]   |        - fields in this struct
[INFO] [stdout] 4 |     a: u32,
[INFO] [stdout]   |     ^
[INFO] [stdout] 5 |     b: i32,
[INFO] [stdout]   |     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `A` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]   --> src/owner_ship.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | struct Person {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 9  |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 10 |     age: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `owner_ship` is never used
[INFO] [stdout]   --> src/owner_ship.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn owner_ship() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn1` is never used
[INFO] [stdout]    --> src/owner_ship.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn fn1(x: Vec<i32>) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]  --> src/life_time.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct A<'a> {
[INFO] [stdout]   |        ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn2` is never used
[INFO] [stdout]    --> src/owner_ship.rs:106:4
[INFO] [stdout]     |
[INFO] [stdout] 106 | fn fn2(x: Vec<i32>) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn3` is never used
[INFO] [stdout]    --> src/owner_ship.rs:110:4
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn fn3(x: Vec<i32>) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f` is never used
[INFO] [stdout]    --> src/owner_ship.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn f() -> bool {
[INFO] [stdout]     |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `X` is never used
[INFO] [stdout]    --> src/owner_ship.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn X(x: Vec<i32>) {
[INFO] [stdout]     |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `T1` is never used
[INFO] [stdout]    --> src/owner_ship.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn T1(strs: String) {
[INFO] [stdout]     |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `T2` is never used
[INFO] [stdout]    --> src/owner_ship.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn T2(strs: &String, str2: &mut String) -> usize {
[INFO] [stdout]     |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f1` is never used
[INFO] [stdout]    --> src/owner_ship.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn f1(s: String) -> String {
[INFO] [stdout]     |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `split_first` and `new` are never used
[INFO] [stdout]   --> src/life_time.rs:8:8
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl<'a> A<'a> {
[INFO] [stdout]    | -------------- associated functions in this implementation
[INFO] [stdout] 8  |     fn split_first(s: &'a str) -> &'a str {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn new(s: &'a str) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `comp1` is never used
[INFO] [stdout]    --> src/owner_ship.rs:140:4
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn comp1(i: &i32, j: &mut i32) {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]  --> src/trait_t.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<T> Point<T> {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 9 |     fn x(&self) -> &T {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fly_static` is never used
[INFO] [stdout]   --> src/trait_t.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn fly_static<T: Fly>(s: T) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fly_dyn` is never used
[INFO] [stdout]   --> src/trait_t.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn fly_dyn(s: &dyn Fly) -> bool {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fly_2` is never used
[INFO] [stdout]   --> src/trait_t.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn fly_2(s: impl Fly) -> bool {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fly_3` is never used
[INFO] [stdout]   --> src/trait_t.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn fly_3(s: impl Fly) -> impl Fly {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trait_t` is never used
[INFO] [stdout]   --> src/trait_t.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub fn trait_t() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn1` is never used
[INFO] [stdout]    --> src/trait_t.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn fn1<T>(x: T) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn2` is never used
[INFO] [stdout]    --> src/trait_t.rs:119:4
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn fn2<T>(x: T) -> T {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn2_1` is never used
[INFO] [stdout]    --> src/trait_t.rs:122:4
[INFO] [stdout]     |
[INFO] [stdout] 122 | fn fn2_1(x: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn2_2` is never used
[INFO] [stdout]    --> src/trait_t.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn fn2_2(x: &'static str) -> &'static str {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `life_time` is never used
[INFO] [stdout]   --> src/life_time.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn life_time() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/trait_t.rs:128:4
[INFO] [stdout]     |
[INFO] [stdout] 128 | fn main() {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `static_dispatch` is never used
[INFO] [stdout]    --> src/trait_t.rs:144:4
[INFO] [stdout]     |
[INFO] [stdout] 144 | fn static_dispatch<T>(t: &A) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dynamic_dispatch` is never used
[INFO] [stdout]    --> src/trait_t.rs:147:4
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn dynamic_dispatch(t: &dyn ATrait) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TraitObject` is never constructed
[INFO] [stdout]    --> src/trait_t.rs:151:12
[INFO] [stdout]     |
[INFO] [stdout] 151 | pub struct TraitObject {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `X` should have a snake case name
[INFO] [stdout]    --> src/owner_ship.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn X(x: Vec<i32>) {
[INFO] [stdout]     |    ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `T1` should have a snake case name
[INFO] [stdout]    --> src/owner_ship.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn T1(strs: String) {
[INFO] [stdout]     |    ^^ help: convert the identifier to snake case: `t1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `b` are never read
[INFO] [stdout]  --> src/owner_ship.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct A {
[INFO] [stdout]   |        - fields in this struct
[INFO] [stdout] 4 |     a: u32,
[INFO] [stdout]   |     ^
[INFO] [stdout] 5 |     b: i32,
[INFO] [stdout]   |     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `A` 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 `T2` should have a snake case name
[INFO] [stdout]    --> src/owner_ship.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn T2(strs: &String, str2: &mut String) -> usize {
[INFO] [stdout]     |    ^^ help: convert the identifier to snake case: `t2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement drops value
[INFO] [stdout]    --> src/trait_t.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 |     x;
[INFO] [stdout]     |     ^^ help: use `drop` to clarify the intent: `drop(x);`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(path_statements)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `fnA` should have a snake case name
[INFO] [stdout]    --> src/trait_t.rs:135:8
[INFO] [stdout]     |
[INFO] [stdout] 135 |     fn fnA(&self);
[INFO] [stdout]     |        ^^^ help: convert the identifier to snake case: `fn_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]   --> src/owner_ship.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | struct Person {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 9  |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 10 |     age: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `owner_ship` is never used
[INFO] [stdout]   --> src/owner_ship.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn owner_ship() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn1` is never used
[INFO] [stdout]    --> src/owner_ship.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn fn1(x: Vec<i32>) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn2` is never used
[INFO] [stdout]    --> src/owner_ship.rs:106:4
[INFO] [stdout]     |
[INFO] [stdout] 106 | fn fn2(x: Vec<i32>) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn3` is never used
[INFO] [stdout]    --> src/owner_ship.rs:110:4
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn fn3(x: Vec<i32>) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f` is never used
[INFO] [stdout]    --> src/owner_ship.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn f() -> bool {
[INFO] [stdout]     |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `X` is never used
[INFO] [stdout]    --> src/owner_ship.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn X(x: Vec<i32>) {
[INFO] [stdout]     |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `T1` is never used
[INFO] [stdout]    --> src/owner_ship.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn T1(strs: String) {
[INFO] [stdout]     |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 40 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `T2` is never used
[INFO] [stdout]    --> src/owner_ship.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn T2(strs: &String, str2: &mut String) -> usize {
[INFO] [stdout]     |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f1` is never used
[INFO] [stdout]    --> src/owner_ship.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn f1(s: String) -> String {
[INFO] [stdout]     |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `comp1` is never used
[INFO] [stdout]    --> src/owner_ship.rs:140:4
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn comp1(i: &i32, j: &mut i32) {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]  --> src/trait_t.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<T> Point<T> {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 9 |     fn x(&self) -> &T {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fly_static` is never used
[INFO] [stdout]   --> src/trait_t.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn fly_static<T: Fly>(s: T) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fly_dyn` is never used
[INFO] [stdout]   --> src/trait_t.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn fly_dyn(s: &dyn Fly) -> bool {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fly_2` is never used
[INFO] [stdout]   --> src/trait_t.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn fly_2(s: impl Fly) -> bool {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fly_3` is never used
[INFO] [stdout]   --> src/trait_t.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn fly_3(s: impl Fly) -> impl Fly {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trait_t` is never used
[INFO] [stdout]   --> src/trait_t.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub fn trait_t() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn1` is never used
[INFO] [stdout]    --> src/trait_t.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn fn1<T>(x: T) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn2` is never used
[INFO] [stdout]    --> src/trait_t.rs:119:4
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn fn2<T>(x: T) -> T {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn2_1` is never used
[INFO] [stdout]    --> src/trait_t.rs:122:4
[INFO] [stdout]     |
[INFO] [stdout] 122 | fn fn2_1(x: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn2_2` is never used
[INFO] [stdout]    --> src/trait_t.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn fn2_2(x: &'static str) -> &'static str {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/trait_t.rs:128:4
[INFO] [stdout]     |
[INFO] [stdout] 128 | fn main() {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `static_dispatch` is never used
[INFO] [stdout]    --> src/trait_t.rs:144:4
[INFO] [stdout]     |
[INFO] [stdout] 144 | fn static_dispatch<T>(t: &A) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dynamic_dispatch` is never used
[INFO] [stdout]    --> src/trait_t.rs:147:4
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn dynamic_dispatch(t: &dyn ATrait) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TraitObject` is never constructed
[INFO] [stdout]    --> src/trait_t.rs:151:12
[INFO] [stdout]     |
[INFO] [stdout] 151 | pub struct TraitObject {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `X` should have a snake case name
[INFO] [stdout]    --> src/owner_ship.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn X(x: Vec<i32>) {
[INFO] [stdout]     |    ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `T1` should have a snake case name
[INFO] [stdout]    --> src/owner_ship.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn T1(strs: String) {
[INFO] [stdout]     |    ^^ help: convert the identifier to snake case: `t1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `T2` should have a snake case name
[INFO] [stdout]    --> src/owner_ship.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn T2(strs: &String, str2: &mut String) -> usize {
[INFO] [stdout]     |    ^^ help: convert the identifier to snake case: `t2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement drops value
[INFO] [stdout]    --> src/trait_t.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 |     x;
[INFO] [stdout]     |     ^^ help: use `drop` to clarify the intent: `drop(x);`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(path_statements)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `fnA` should have a snake case name
[INFO] [stdout]    --> src/trait_t.rs:135:8
[INFO] [stdout]     |
[INFO] [stdout] 135 |     fn fnA(&self);
[INFO] [stdout]     |        ^^^ help: convert the identifier to snake case: `fn_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 40 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "b32926a89ab0c71ddd75f0afe7085eefd37071a1c550398be00abf7b8f19b1d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b32926a89ab0c71ddd75f0afe7085eefd37071a1c550398be00abf7b8f19b1d4", kill_on_drop: false }`
[INFO] [stdout] b32926a89ab0c71ddd75f0afe7085eefd37071a1c550398be00abf7b8f19b1d4