[INFO] cloning repository https://github.com/LImoritakeU/rust_playgroud
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LImoritakeU/rust_playgroud" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLImoritakeU%2Frust_playgroud", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLImoritakeU%2Frust_playgroud'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 28adbc8277ad94b65997893f8a4d6a0a72a0edf1
[INFO] checking LImoritakeU/rust_playgroud against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLImoritakeU%2Frust_playgroud" "/workspace/builds/worker-63/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-63/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LImoritakeU/rust_playgroud on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LImoritakeU/rust_playgroud
[INFO] finished tweaking git repo https://github.com/LImoritakeU/rust_playgroud
[INFO] tweaked toml for git repo https://github.com/LImoritakeU/rust_playgroud written to /workspace/builds/worker-63/source/Cargo.toml
[INFO] crate git repo https://github.com/LImoritakeU/rust_playgroud already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex v1.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d6b75b8bf2737540092fde1a54b6702d827d76d4469b42ab7b4e276b1c55cfb
[INFO] running `Command { std: "docker" "start" "-a" "6d6b75b8bf2737540092fde1a54b6702d827d76d4469b42ab7b4e276b1c55cfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d6b75b8bf2737540092fde1a54b6702d827d76d4469b42ab7b4e276b1c55cfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d6b75b8bf2737540092fde1a54b6702d827d76d4469b42ab7b4e276b1c55cfb", kill_on_drop: false }`
[INFO] [stdout] 6d6b75b8bf2737540092fde1a54b6702d827d76d4469b42ab7b4e276b1c55cfb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8cd4b1b73dd0ebbb172475c2ce7bf5c9de24dca79683212034e5ba5bc30e4368
[INFO] running `Command { std: "docker" "start" "-a" "8cd4b1b73dd0ebbb172475c2ce7bf5c9de24dca79683212034e5ba5bc30e4368", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling regex v1.1.5
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking playground v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/practice_57/practice05.rs (2 fixes)
[INFO] [stderr]        Fixed src/practice_57/practice07.rs (2 fixes)
[INFO] [stderr]        Fixed src/main.rs (12 fixes)
[INFO] [stderr]        Fixed src/practice_57/practice03.rs (1 fix)
[INFO] [stdout] warning: the item `Formatter` is imported redundantly
[INFO] [stdout]    --> src/main.rs:127:26
[INFO] [stdout]     |
[INFO] [stdout] 8   | use std::fmt::{Display, Formatter};
[INFO] [stdout]     |                         --------- the item `Formatter` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 127 |     use std::fmt::{self, Formatter, Display};
[INFO] [stdout]     |                          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Display` is imported redundantly
[INFO] [stdout]    --> src/main.rs:127:37
[INFO] [stdout]     |
[INFO] [stdout] 8   | use std::fmt::{Display, Formatter};
[INFO] [stdout]     |                ------- the item `Display` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 127 |     use std::fmt::{self, Formatter, Display};
[INFO] [stdout]     |                                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     /// Array, Vector, and Slice
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 181 |     // new array
[INFO] [stdout] 182 |     let arr = ["eins", "zwei"];
[INFO] [stdout]     |     --------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]    --> src/main.rs:340:9
[INFO] [stdout]     |
[INFO] [stdout] 340 |     use std::convert::From;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]    --> src/main.rs:361:9
[INFO] [stdout]     |
[INFO] [stdout] 361 |     use std::string::ToString;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Formatter` is imported redundantly
[INFO] [stdout]    --> src/main.rs:127:26
[INFO] [stdout]     |
[INFO] [stdout] 8   | use std::fmt::{Display, Formatter};
[INFO] [stdout]     |                         --------- the item `Formatter` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 127 |     use std::fmt::{self, Formatter, Display};
[INFO] [stdout]     |                          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Display` is imported redundantly
[INFO] [stdout]    --> src/main.rs:127:37
[INFO] [stdout]     |
[INFO] [stdout] 8   | use std::fmt::{Display, Formatter};
[INFO] [stdout]     |                ------- the item `Display` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 127 |     use std::fmt::{self, Formatter, Display};
[INFO] [stdout]     |                                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     /// Array, Vector, and Slice
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 181 |     // new array
[INFO] [stdout] 182 |     let arr = ["eins", "zwei"];
[INFO] [stdout]     |     --------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]    --> src/main.rs:340:9
[INFO] [stdout]     |
[INFO] [stdout] 340 |     use std::convert::From;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]    --> src/main.rs:361:9
[INFO] [stdout]     |
[INFO] [stdout] 361 |     use std::string::ToString;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `count_str`
[INFO] [stdout]   --> src/practice_57/practice02.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn count_str() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `use_quote`
[INFO] [stdout]  --> src/practice_57/practice03.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn use_quote() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fill_sentence`
[INFO] [stdout]  --> src/practice_57/practice04.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn fill_sentence() {}
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate`
[INFO] [stdout]  --> src/practice_57/practice05.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn calculate() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate_retiration`
[INFO] [stdout]  --> src/practice_57/practice06.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn calculate_retiration() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rectangle`
[INFO] [stdout]  --> src/practice_57/practice07.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn rectangle() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bubble_sort`
[INFO] [stdout]   --> src/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn bubble_sort(slice: &mut Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `num`
[INFO] [stdout]   --> src/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn num() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `debug_practice`
[INFO] [stdout]   --> src/main.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn debug_practice() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `display_practice`
[INFO] [stdout]    --> src/main.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn display_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `formatting`
[INFO] [stdout]    --> src/main.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn formatting() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tuple_practice`
[INFO] [stdout]    --> src/main.rs:149:4
[INFO] [stdout]     |
[INFO] [stdout] 149 | fn tuple_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sequences`
[INFO] [stdout]    --> src/main.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn sequences() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enums_practices`
[INFO] [stdout]    --> src/main.rs:268:4
[INFO] [stdout]     |
[INFO] [stdout] 268 | fn enums_practices() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `conversion_practice`
[INFO] [stdout]    --> src/main.rs:323:4
[INFO] [stdout]     |
[INFO] [stdout] 323 | fn conversion_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lambda_practice`
[INFO] [stdout]    --> src/main.rs:394:4
[INFO] [stdout]     |
[INFO] [stdout] 394 | fn lambda_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `assign_practice`
[INFO] [stdout]    --> src/main.rs:432:4
[INFO] [stdout]     |
[INFO] [stdout] 432 | fn assign_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `trans` should have an upper case name
[INFO] [stdout]  --> src/practice_57/practice07.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 |     const trans: f64 = 0.09290304;
[INFO] [stdout]   |           ^^^^^ help: convert the identifier to upper case: `TRANS`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `count_str`
[INFO] [stdout]   --> src/practice_57/practice02.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn count_str() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `use_quote`
[INFO] [stdout]  --> src/practice_57/practice03.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn use_quote() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `pieces_per_pizza` should have an upper case name
[INFO] [stdout]  --> src/practice_57/practice08.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 |     const pieces_per_pizza: i32 = 8;
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `PIECES_PER_PIZZA`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fill_sentence`
[INFO] [stdout]  --> src/practice_57/practice04.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn fill_sentence() {}
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate`
[INFO] [stdout]  --> src/practice_57/practice05.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn calculate() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate_retiration`
[INFO] [stdout]  --> src/practice_57/practice06.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn calculate_retiration() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rectangle`
[INFO] [stdout]  --> src/practice_57/practice07.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn rectangle() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bubble_sort`
[INFO] [stdout]   --> src/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn bubble_sort(slice: &mut Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `num`
[INFO] [stdout]   --> src/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn num() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `debug_practice`
[INFO] [stdout]   --> src/main.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn debug_practice() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `display_practice`
[INFO] [stdout]    --> src/main.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn display_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `formatting`
[INFO] [stdout]    --> src/main.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn formatting() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tuple_practice`
[INFO] [stdout]    --> src/main.rs:149:4
[INFO] [stdout]     |
[INFO] [stdout] 149 | fn tuple_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sequences`
[INFO] [stdout]    --> src/main.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn sequences() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enums_practices`
[INFO] [stdout]    --> src/main.rs:268:4
[INFO] [stdout]     |
[INFO] [stdout] 268 | fn enums_practices() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `conversion_practice`
[INFO] [stdout]    --> src/main.rs:323:4
[INFO] [stdout]     |
[INFO] [stdout] 323 | fn conversion_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lambda_practice`
[INFO] [stdout]    --> src/main.rs:394:4
[INFO] [stdout]     |
[INFO] [stdout] 394 | fn lambda_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `assign_practice`
[INFO] [stdout]    --> src/main.rs:432:4
[INFO] [stdout]     |
[INFO] [stdout] 432 | fn assign_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `trans` should have an upper case name
[INFO] [stdout]  --> src/practice_57/practice07.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 |     const trans: f64 = 0.09290304;
[INFO] [stdout]   |           ^^^^^ help: convert the identifier to upper case: `TRANS`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `pieces_per_pizza` should have an upper case name
[INFO] [stdout]  --> src/practice_57/practice08.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 |     const pieces_per_pizza: i32 = 8;
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `PIECES_PER_PIZZA`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 07s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking playground v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: the item `Formatter` is imported redundantly
[INFO] [stdout]    --> src/main.rs:127:26
[INFO] [stdout]     |
[INFO] [stdout] 8   | use std::fmt::{Display, Formatter};
[INFO] [stdout]     |                         --------- the item `Formatter` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 127 |     use std::fmt::{self, Formatter, Display};
[INFO] [stdout]     |                          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Display` is imported redundantly
[INFO] [stdout]    --> src/main.rs:127:37
[INFO] [stdout]     |
[INFO] [stdout] 8   | use std::fmt::{Display, Formatter};
[INFO] [stdout]     |                ------- the item `Display` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 127 |     use std::fmt::{self, Formatter, Display};
[INFO] [stdout]     |                                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     /// Array, Vector, and Slice
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 181 |     // new array
[INFO] [stdout] 182 |     let arr = ["eins", "zwei"];
[INFO] [stdout]     |     --------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]    --> src/main.rs:340:9
[INFO] [stdout]     |
[INFO] [stdout] 340 |     use std::convert::From;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]    --> src/main.rs:361:9
[INFO] [stdout]     |
[INFO] [stdout] 361 |     use std::string::ToString;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Formatter` is imported redundantly
[INFO] [stdout]    --> src/main.rs:127:26
[INFO] [stdout]     |
[INFO] [stdout] 8   | use std::fmt::{Display, Formatter};
[INFO] [stdout]     |                         --------- the item `Formatter` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 127 |     use std::fmt::{self, Formatter, Display};
[INFO] [stdout]     |                          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Display` is imported redundantly
[INFO] [stdout]    --> src/main.rs:127:37
[INFO] [stdout]     |
[INFO] [stdout] 8   | use std::fmt::{Display, Formatter};
[INFO] [stdout]     |                ------- the item `Display` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 127 |     use std::fmt::{self, Formatter, Display};
[INFO] [stdout]     |                                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     /// Array, Vector, and Slice
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 181 |     // new array
[INFO] [stdout] 182 |     let arr = ["eins", "zwei"];
[INFO] [stdout]     |     --------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]    --> src/main.rs:340:9
[INFO] [stdout]     |
[INFO] [stdout] 340 |     use std::convert::From;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]    --> src/main.rs:361:9
[INFO] [stdout]     |
[INFO] [stdout] 361 |     use std::string::ToString;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `count_str`
[INFO] [stdout]   --> src/practice_57/practice02.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn count_str() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `use_quote`
[INFO] [stdout]  --> src/practice_57/practice03.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn use_quote() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fill_sentence`
[INFO] [stdout]  --> src/practice_57/practice04.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn fill_sentence() {}
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate`
[INFO] [stdout]  --> src/practice_57/practice05.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn calculate() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate_retiration`
[INFO] [stdout]  --> src/practice_57/practice06.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn calculate_retiration() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rectangle`
[INFO] [stdout]  --> src/practice_57/practice07.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn rectangle() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bubble_sort`
[INFO] [stdout]   --> src/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn bubble_sort(slice: &mut Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `num`
[INFO] [stdout]   --> src/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn num() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `debug_practice`
[INFO] [stdout]   --> src/main.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn debug_practice() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `display_practice`
[INFO] [stdout]    --> src/main.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn display_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `formatting`
[INFO] [stdout]    --> src/main.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn formatting() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tuple_practice`
[INFO] [stdout]    --> src/main.rs:149:4
[INFO] [stdout]     |
[INFO] [stdout] 149 | fn tuple_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sequences`
[INFO] [stdout]    --> src/main.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn sequences() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enums_practices`
[INFO] [stdout]    --> src/main.rs:268:4
[INFO] [stdout]     |
[INFO] [stdout] 268 | fn enums_practices() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `conversion_practice`
[INFO] [stdout]    --> src/main.rs:323:4
[INFO] [stdout]     |
[INFO] [stdout] 323 | fn conversion_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lambda_practice`
[INFO] [stdout]    --> src/main.rs:394:4
[INFO] [stdout]     |
[INFO] [stdout] 394 | fn lambda_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `assign_practice`
[INFO] [stdout]    --> src/main.rs:432:4
[INFO] [stdout]     |
[INFO] [stdout] 432 | fn assign_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `trans` should have an upper case name
[INFO] [stdout]  --> src/practice_57/practice07.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 |     const trans: f64 = 0.09290304;
[INFO] [stdout]   |           ^^^^^ help: convert the identifier to upper case: `TRANS`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `pieces_per_pizza` should have an upper case name
[INFO] [stdout]  --> src/practice_57/practice08.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 |     const pieces_per_pizza: i32 = 8;
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `PIECES_PER_PIZZA`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `count_str`
[INFO] [stdout]   --> src/practice_57/practice02.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn count_str() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `use_quote`
[INFO] [stdout]  --> src/practice_57/practice03.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn use_quote() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fill_sentence`
[INFO] [stdout]  --> src/practice_57/practice04.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn fill_sentence() {}
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate`
[INFO] [stdout]  --> src/practice_57/practice05.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn calculate() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate_retiration`
[INFO] [stdout]  --> src/practice_57/practice06.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn calculate_retiration() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rectangle`
[INFO] [stdout]  --> src/practice_57/practice07.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn rectangle() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bubble_sort`
[INFO] [stdout]   --> src/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn bubble_sort(slice: &mut Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `num`
[INFO] [stdout]   --> src/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn num() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `debug_practice`
[INFO] [stdout]   --> src/main.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn debug_practice() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `display_practice`
[INFO] [stdout]    --> src/main.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn display_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `formatting`
[INFO] [stdout]    --> src/main.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn formatting() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tuple_practice`
[INFO] [stdout]    --> src/main.rs:149:4
[INFO] [stdout]     |
[INFO] [stdout] 149 | fn tuple_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sequences`
[INFO] [stdout]    --> src/main.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn sequences() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enums_practices`
[INFO] [stdout]    --> src/main.rs:268:4
[INFO] [stdout]     |
[INFO] [stdout] 268 | fn enums_practices() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `conversion_practice`
[INFO] [stdout]    --> src/main.rs:323:4
[INFO] [stdout]     |
[INFO] [stdout] 323 | fn conversion_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lambda_practice`
[INFO] [stdout]    --> src/main.rs:394:4
[INFO] [stdout]     |
[INFO] [stdout] 394 | fn lambda_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `assign_practice`
[INFO] [stdout]    --> src/main.rs:432:4
[INFO] [stdout]     |
[INFO] [stdout] 432 | fn assign_practice() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `trans` should have an upper case name
[INFO] [stdout]  --> src/practice_57/practice07.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 |     const trans: f64 = 0.09290304;
[INFO] [stdout]   |           ^^^^^ help: convert the identifier to upper case: `TRANS`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `pieces_per_pizza` should have an upper case name
[INFO] [stdout]  --> src/practice_57/practice08.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 |     const pieces_per_pizza: i32 = 8;
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `PIECES_PER_PIZZA`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "8cd4b1b73dd0ebbb172475c2ce7bf5c9de24dca79683212034e5ba5bc30e4368", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cd4b1b73dd0ebbb172475c2ce7bf5c9de24dca79683212034e5ba5bc30e4368", kill_on_drop: false }`
[INFO] [stdout] 8cd4b1b73dd0ebbb172475c2ce7bf5c9de24dca79683212034e5ba5bc30e4368