[INFO] cloning repository https://github.com/zongzi531/rust-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zongzi531/rust-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzongzi531%2Frust-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzongzi531%2Frust-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dcf7c60aecad6474095e9df0da0409a19ff70b09
[INFO] checking zongzi531/rust-learning against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzongzi531%2Frust-learning" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zongzi531/rust-learning
[INFO] finished tweaking git repo https://github.com/zongzi531/rust-learning
[INFO] tweaked toml for git repo https://github.com/zongzi531/rust-learning written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zongzi531/rust-learning on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zongzi531/rust-learning 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded utf8_slice v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b36ad6e75dc7cc2f80a8f1b271fd745397965bf4885840e1f8d72f2e850ad47
[INFO] running `Command { std: "docker" "start" "-a" "7b36ad6e75dc7cc2f80a8f1b271fd745397965bf4885840e1f8d72f2e850ad47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b36ad6e75dc7cc2f80a8f1b271fd745397965bf4885840e1f8d72f2e850ad47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b36ad6e75dc7cc2f80a8f1b271fd745397965bf4885840e1f8d72f2e850ad47", kill_on_drop: false }`
[INFO] [stdout] 7b36ad6e75dc7cc2f80a8f1b271fd745397965bf4885840e1f8d72f2e850ad47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98baae86fac15cfc9bb8588f1beed0d88c9e1a1d0702decbe58393fd01828122
[INFO] running `Command { std: "docker" "start" "-a" "98baae86fac15cfc9bb8588f1beed0d88c9e1a1d0702decbe58393fd01828122", kill_on_drop: false }`
[INFO] [stderr]     Checking utf8_slice v1.0.0
[INFO] [stderr]     Checking rust-learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/bin/basic-types-functions-5.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |   let v = match b {
[INFO] [stdout]   |       ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed
[INFO] [stdout]  --> src/bin/lifetime-basic-9.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct ImportantExcerpt<'a> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `level` is never used
[INFO] [stdout]  --> src/bin/lifetime-basic-9.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]   | ----------------------------- method in this implementation
[INFO] [stdout] 7 |   fn level(&'a self) -> i32 {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/bin/lifetime-basic-10.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn longest<'a>(x: &'a str, y: &str) -> &'a str {
[INFO] [stdout]   |                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `nput` is never used
[INFO] [stdout]  --> src/bin/lifetime-basic-10.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn nput(x: &i32) {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pass` is never used
[INFO] [stdout]  --> src/bin/lifetime-basic-10.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn pass(x: &i32) -> &i32 { x }
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[INFO] [stdout]  --> src/bin/lifetime-basic-10.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn longest<'a>(x: &'a str, y: &str) -> &'a str {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Owner` is never constructed
[INFO] [stdout]   --> src/bin/lifetime-basic-10.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Owner(i32);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_one` and `print` are never used
[INFO] [stdout]   --> src/bin/lifetime-basic-10.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Owner {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 16 |   fn add_one(&mut self) { self.0 += 1; }
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 17 |   fn print(&self) {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]   --> src/bin/lifetime-basic-10.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Person<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Either` is never used
[INFO] [stdout]   --> src/bin/lifetime-basic-10.rs:27:6
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum Either<'a> {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/ownership-borrowing-3.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 |   let mut s = String::from("hello, ");
[INFO] [stdout]   |       ----^
[INFO] [stdout]   |       |
[INFO] [stdout]   |       help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/bin/ownership-borrowing-3.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn borrow_object(s: &String) {}
[INFO] [stdout]   |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/bin/pattern-match-match-iflet-7.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 |   if let Foo::Bar(i) = a {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_option` is never used
[INFO] [stdout]  --> src/bin/basic-types-functions-4.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn get_option(tp: u8) -> Option<i32> {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `never_return_fn` is never used
[INFO] [stdout]   --> src/bin/basic-types-functions-4.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn never_return_fn() -> ! {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]  --> src/bin/flow-control-4.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 |   for name in &names {
[INFO] [stdout]   |       ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/bin/flow-control-4.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 |   for n in numbers {
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/bin/generics-traits-traits-8.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl<T> Pair<T> {
[INFO] [stdout]   | --------------- associated function in this implementation
[INFO] [stdout] 8 |   fn new(x: T, y: T) -> Self {
[INFO] [stdout]   |      ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]  --> src/bin/compound-types-struct-3.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Color(i32, i32, i32);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ele`
[INFO] [stdout]  --> src/bin/result-panic-panic-2.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |   let ele = v[2];
[INFO] [stdout]   |       ^^^ help: if this is intentional, prefix it with an underscore: `_ele`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ele`
[INFO] [stdout]  --> src/bin/result-panic-panic-2.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 |   let ele = v.get(2).unwrap();
[INFO] [stdout]   |       ^^^ help: if this is intentional, prefix it with an underscore: `_ele`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/bin/result-panic-panic-2.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 |   let v = production_rate_per_hour(2);
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]  --> src/bin/compound-types-enum-5.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 |   if let n = six {
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]   = help: consider replacing the `if let` with a `let`
[INFO] [stdout]   = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `i` should have an upper case name
[INFO] [stdout]   --> src/bin/lifetime-static-5.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 |     const i: i32 = 5;
[INFO] [stdout]    |           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]    |
[INFO] [stdout] 19 -     const i: i32 = 5;
[INFO] [stdout] 19 +     const I: i32 = 5;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]  --> src/bin/compound-types-enum-5.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |   let none = plus_one(None);
[INFO] [stdout]   |       ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `None`
[INFO] [stdout]   |
[INFO] [stdout] 6 -   let none = plus_one(None);
[INFO] [stdout] 6 +   let std::prelude::v1::None = plus_one(None);
[INFO] [stdout]   |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]   |
[INFO] [stdout] 6 |   let _none = plus_one(None);
[INFO] [stdout]   |       +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::str::from_utf8` with an invalid literal always return an error
[INFO] [stdout]   --> src/bin/compound-types-string-10-1.rs:34:11
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let shift_jis = b"\x82\xe6\x82\xa8\x82\xb1\x82\xbb"; // "ようこそ" in SHIFT-JIS
[INFO] [stdout]    |                     ----------------------------------- the literal was valid UTF-8 up to the 0 bytes
[INFO] [stdout] ...
[INFO] [stdout] 34 |     match str::from_utf8(shift_jis) {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(invalid_from_utf8)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-learning` (bin "generics-traits-const-generics-3") due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/bin/generics-traits-const-generics-3.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generic_const_exprs)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]  --> src/bin/generics-traits-const-generics-3.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn check_size<T>(val: T)
[INFO] [stdout]   |                  ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_c` is never used
[INFO] [stdout]   --> src/bin/lifetime-static-6.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn print_c(t: &'static dyn Display) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_d` is never used
[INFO] [stdout]   --> src/bin/lifetime-static-6.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn print_d(t: &'static impl Display) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_g` is never used
[INFO] [stdout]   --> src/bin/lifetime-static-6.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn print_g(t: &'static String) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/bin/compound-types-struct-1.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 |   let p = Person {
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `age`, and `hobby` are never read
[INFO] [stdout]  --> src/bin/compound-types-struct-1.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Person {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 4 |   name: String,
[INFO] [stdout]   |   ^^^^
[INFO] [stdout] 5 |   age: u8,
[INFO] [stdout]   |   ^^^
[INFO] [stdout] 6 |   hobby: String
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/bin/flow-control-8.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 |   for i in 0..=100 {
[INFO] [stdout]   |       ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "98baae86fac15cfc9bb8588f1beed0d88c9e1a1d0702decbe58393fd01828122", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98baae86fac15cfc9bb8588f1beed0d88c9e1a1d0702decbe58393fd01828122", kill_on_drop: false }`
[INFO] [stdout] 98baae86fac15cfc9bb8588f1beed0d88c9e1a1d0702decbe58393fd01828122
