[INFO] cloning repository https://github.com/MagicLu550/rustTest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MagicLu550/rustTest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMagicLu550%2FrustTest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMagicLu550%2FrustTest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d77e0cd79e7e2620df79d0b8d802434c433bca9
[INFO] checking MagicLu550/rustTest/0d77e0cd79e7e2620df79d0b8d802434c433bca9 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMagicLu550%2FrustTest" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MagicLu550/rustTest on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MagicLu550/rustTest
[INFO] finished tweaking git repo https://github.com/MagicLu550/rustTest
[INFO] tweaked toml for git repo https://github.com/MagicLu550/rustTest written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/MagicLu550/rustTest 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.58
[INFO] [stderr]   Downloaded winapi v0.3.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7100ea06b0bb397e6f2f66cd517baeac72f9dee5dbaf9d2a71b704a942491b29
[INFO] running `Command { std: "docker" "start" "-a" "7100ea06b0bb397e6f2f66cd517baeac72f9dee5dbaf9d2a71b704a942491b29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7100ea06b0bb397e6f2f66cd517baeac72f9dee5dbaf9d2a71b704a942491b29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7100ea06b0bb397e6f2f66cd517baeac72f9dee5dbaf9d2a71b704a942491b29", kill_on_drop: false }`
[INFO] [stdout] 7100ea06b0bb397e6f2f66cd517baeac72f9dee5dbaf9d2a71b704a942491b29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49041daac33ca76a61cc1512c6b15eda5bc6f2cec1476f5ae081b74c9f8dc52b
[INFO] running `Command { std: "docker" "start" "-a" "49041daac33ca76a61cc1512c6b15eda5bc6f2cec1476f5ae081b74c9f8dc52b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rustTest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> src/main.rs:81:19
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn test_3(a:i32)->&i32{
[INFO] [stdout]    |                   ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
[INFO] [stdout] help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn test_3(a:i32)->&'static i32{
[INFO] [stdout]    |                    +++++++
[INFO] [stdout] help: instead, you are more likely to want to change the argument to be borrowed...
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn test_3(a:&i32)->&i32{
[INFO] [stdout]    |             +
[INFO] [stdout] help: ...or alternatively, you might want to return an owned value
[INFO] [stdout]    |
[INFO] [stdout] 81 - fn test_3(a:i32)->&i32{
[INFO] [stdout] 81 + fn test_3(a:i32)->i32{
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> src/main.rs:81:19
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn test_3(a:i32)->&i32{
[INFO] [stdout]    |                   ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
[INFO] [stdout] help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn test_3(a:i32)->&'static i32{
[INFO] [stdout]    |                    +++++++
[INFO] [stdout] help: instead, you are more likely to want to change the argument to be borrowed...
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn test_3(a:&i32)->&i32{
[INFO] [stdout]    |             +
[INFO] [stdout] help: ...or alternatively, you might want to return an owned value
[INFO] [stdout]    |
[INFO] [stdout] 81 - fn test_3(a:i32)->&i32{
[INFO] [stdout] 81 + fn test_3(a:i32)->i32{
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]   --> src/main.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let r1 = &mut s;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]   --> src/main.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let r1 = &mut s;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r2`
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let r2 = &mut s;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r2`
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let r2 = &mut s;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]   --> src/main.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let r1 = &s;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]   --> src/main.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let r1 = &s;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r2`
[INFO] [stdout]   --> src/main.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let r2 = &s;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r2`
[INFO] [stdout]   --> src/main.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let r2 = &s;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r3`
[INFO] [stdout]   --> src/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let r3 = &mut s;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r3`
[INFO] [stdout]   --> src/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let r3 = &mut s;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return reference to function parameter `a`
[INFO] [stdout]   --> src/main.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout] 82 |     return &a;
[INFO] [stdout]    |            ^^ returns a reference to data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return reference to function parameter `a`
[INFO] [stdout]   --> src/main.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout] 82 |     return &a;
[INFO] [stdout]    |            ^^ returns a reference to data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/main.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let s= "hello";
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/main.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let s= "hello";
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s3`
[INFO] [stdout]    --> src/main.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |     let s3 = s2.clone();//复制堆数据，s2依然有效
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s3`
[INFO] [stdout]    --> src/main.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |     let s3 = s2.clone();//复制堆数据，s2依然有效
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/main.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |     let z = y;//堆栈数据的复制
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/main.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |     let z = y;//堆栈数据的复制
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str1_1`
[INFO] [stdout]    --> src/main.rs:159:10
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let (str1_1,str2_1) = return_value_str_str(str1,str2);
[INFO] [stdout]     |          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_str1_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str1_1`
[INFO] [stdout]    --> src/main.rs:159:10
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let (str1_1,str2_1) = return_value_str_str(str1,str2);
[INFO] [stdout]     |          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_str1_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str2_1`
[INFO] [stdout]    --> src/main.rs:159:17
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let (str1_1,str2_1) = return_value_str_str(str1,str2);
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_str2_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str2_1`
[INFO] [stdout]    --> src/main.rs:159:17
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let (str1_1,str2_1) = return_value_str_str(str1,str2);
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_str2_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]    --> src/main.rs:202:9
[INFO] [stdout]     |
[INFO] [stdout] 202 |     let number = if _b{
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]    --> src/main.rs:202:9
[INFO] [stdout]     |
[INFO] [stdout] 202 |     let number = if _b{
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:250:9
[INFO] [stdout]     |
[INFO] [stdout] 250 |     let x = 5;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:250:9
[INFO] [stdout]     |
[INFO] [stdout] 250 |     let x = 5;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num1`
[INFO] [stdout]    --> src/main.rs:292:9
[INFO] [stdout]     |
[INFO] [stdout] 292 |     let num1 = 1;
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_num1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:317:9
[INFO] [stdout]     |
[INFO] [stdout] 317 |     let x = x*2;//12
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num1`
[INFO] [stdout]    --> src/main.rs:292:9
[INFO] [stdout]     |
[INFO] [stdout] 292 |     let num1 = 1;
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_num1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]    --> src/main.rs:354:9
[INFO] [stdout]     |
[INFO] [stdout] 354 |     let a1 = 0;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:317:9
[INFO] [stdout]     |
[INFO] [stdout] 317 |     let x = x*2;//12
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]    --> src/main.rs:354:9
[INFO] [stdout]     |
[INFO] [stdout] 354 |     let a1 = 0;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]    --> src/main.rs:355:9
[INFO] [stdout]     |
[INFO] [stdout] 355 |     let a2 = 0x0000_0001;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a3`
[INFO] [stdout]    --> src/main.rs:356:9
[INFO] [stdout]     |
[INFO] [stdout] 356 |     let a3 = 64i64;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]    --> src/main.rs:355:9
[INFO] [stdout]     |
[INFO] [stdout] 355 |     let a2 = 0x0000_0001;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a4`
[INFO] [stdout]    --> src/main.rs:357:9
[INFO] [stdout]     |
[INFO] [stdout] 357 |     let a4 = 1000_100;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a3`
[INFO] [stdout]    --> src/main.rs:356:9
[INFO] [stdout]     |
[INFO] [stdout] 356 |     let a3 = 64i64;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a5`
[INFO] [stdout]    --> src/main.rs:358:9
[INFO] [stdout]     |
[INFO] [stdout] 358 |     let a5 = -1009209222;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a4`
[INFO] [stdout]    --> src/main.rs:357:9
[INFO] [stdout]     |
[INFO] [stdout] 357 |     let a4 = 1000_100;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:364:9
[INFO] [stdout]     |
[INFO] [stdout] 364 |     let x = 2.0;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a5`
[INFO] [stdout]    --> src/main.rs:358:9
[INFO] [stdout]     |
[INFO] [stdout] 358 |     let a5 = -1009209222;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:366:9
[INFO] [stdout]     |
[INFO] [stdout] 366 |     let y:f32 = 3.0;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:364:9
[INFO] [stdout]     |
[INFO] [stdout] 364 |     let x = 2.0;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/main.rs:372:9
[INFO] [stdout]     |
[INFO] [stdout] 372 |     let sum = 5+10;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:366:9
[INFO] [stdout]     |
[INFO] [stdout] 366 |     let y:f32 = 3.0;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `difference`
[INFO] [stdout]    --> src/main.rs:373:9
[INFO] [stdout]     |
[INFO] [stdout] 373 |     let difference = 99.5 - 4.3;
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difference`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/main.rs:372:9
[INFO] [stdout]     |
[INFO] [stdout] 372 |     let sum = 5+10;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `product`
[INFO] [stdout]    --> src/main.rs:374:9
[INFO] [stdout]     |
[INFO] [stdout] 374 |     let product = 4*30;
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_product`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `difference`
[INFO] [stdout]    --> src/main.rs:373:9
[INFO] [stdout]     |
[INFO] [stdout] 373 |     let difference = 99.5 - 4.3;
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difference`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `quotient`
[INFO] [stdout]    --> src/main.rs:376:9
[INFO] [stdout]     |
[INFO] [stdout] 376 |     let quotient = 56.7/32.2;
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_quotient`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `product`
[INFO] [stdout]    --> src/main.rs:374:9
[INFO] [stdout]     |
[INFO] [stdout] 374 |     let product = 4*30;
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_product`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `quotient`
[INFO] [stdout]    --> src/main.rs:376:9
[INFO] [stdout]     |
[INFO] [stdout] 376 |     let quotient = 56.7/32.2;
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_quotient`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remainder`
[INFO] [stdout]    --> src/main.rs:378:9
[INFO] [stdout]     |
[INFO] [stdout] 378 |     let remainder = 43 % 5;
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remainder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remainder`
[INFO] [stdout]    --> src/main.rs:378:9
[INFO] [stdout]     |
[INFO] [stdout] 378 |     let remainder = 43 % 5;
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remainder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:381:9
[INFO] [stdout]     |
[INFO] [stdout] 381 |     let t = true;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/main.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |     let f:bool = false;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:381:9
[INFO] [stdout]     |
[INFO] [stdout] 381 |     let t = true;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/main.rs:386:9
[INFO] [stdout]     |
[INFO] [stdout] 386 |     let c = 'z';
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/main.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |     let f:bool = false;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/main.rs:387:9
[INFO] [stdout]     |
[INFO] [stdout] 387 |     let z = 'ℤ';
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/main.rs:386:9
[INFO] [stdout]     |
[INFO] [stdout] 386 |     let c = 'z';
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/main.rs:387:9
[INFO] [stdout]     |
[INFO] [stdout] 387 |     let z = 'ℤ';
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `heart_eyed_cat`
[INFO] [stdout]    --> src/main.rs:388:9
[INFO] [stdout]     |
[INFO] [stdout] 388 |     let heart_eyed_cat = '😻';
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heart_eyed_cat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `heart_eyed_cat`
[INFO] [stdout]    --> src/main.rs:388:9
[INFO] [stdout]     |
[INFO] [stdout] 388 |     let heart_eyed_cat = '😻';
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heart_eyed_cat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tup`
[INFO] [stdout]    --> src/main.rs:391:9
[INFO] [stdout]     |
[INFO] [stdout] 391 |     let tup:(i32,f64,u8) = (500,6.4,1);
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_tup`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tup`
[INFO] [stdout]    --> src/main.rs:391:9
[INFO] [stdout]     |
[INFO] [stdout] 391 |     let tup:(i32,f64,u8) = (500,6.4,1);
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_tup`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:393:12
[INFO] [stdout]     |
[INFO] [stdout] 393 |     let (x,y,z) = tup1;//解构
[INFO] [stdout]     |            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:393:12
[INFO] [stdout]     |
[INFO] [stdout] 393 |     let (x,y,z) = tup1;//解构
[INFO] [stdout]     |            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/main.rs:393:14
[INFO] [stdout]     |
[INFO] [stdout] 393 |     let (x,y,z) = tup1;//解构
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/main.rs:393:14
[INFO] [stdout]     |
[INFO] [stdout] 393 |     let (x,y,z) = tup1;//解构
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t1`
[INFO] [stdout]    --> src/main.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |     let t1 = tup1.0;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_t1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t1`
[INFO] [stdout]    --> src/main.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |     let t1 = tup1.0;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_t1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t2`
[INFO] [stdout]    --> src/main.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 399 |     let t2 = tup1.1;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_t2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t2`
[INFO] [stdout]    --> src/main.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 399 |     let t2 = tup1.1;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_t2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/main.rs:402:9
[INFO] [stdout]     |
[INFO] [stdout] 402 |     let a = [1,2,3,4,5];
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]    --> src/main.rs:409:9
[INFO] [stdout]     |
[INFO] [stdout] 409 |     let first = months[0];
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/main.rs:402:9
[INFO] [stdout]     |
[INFO] [stdout] 402 |     let a = [1,2,3,4,5];
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]    --> src/main.rs:409:9
[INFO] [stdout]     |
[INFO] [stdout] 409 |     let first = months[0];
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `second`
[INFO] [stdout]    --> src/main.rs:411:9
[INFO] [stdout]     |
[INFO] [stdout] 411 |     let second = months[1];
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_second`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `second`
[INFO] [stdout]    --> src/main.rs:411:9
[INFO] [stdout]     |
[INFO] [stdout] 411 |     let second = months[1];
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_second`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `a` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:442:13
[INFO] [stdout]     |
[INFO] [stdout] 442 |     let mut a = 0;
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_a` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a` is never read
[INFO] [stdout]    --> src/main.rs:443:5
[INFO] [stdout]     |
[INFO] [stdout] 443 |     a=1;
[INFO] [stdout]     |     ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `a` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:442:13
[INFO] [stdout]     |
[INFO] [stdout] 442 |     let mut a = 0;
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_a` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a` is never read
[INFO] [stdout]    --> src/main.rs:443:5
[INFO] [stdout]     |
[INFO] [stdout] 443 |     a=1;
[INFO] [stdout]     |     ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0106, E0515.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0106, E0515.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustTest` (bin "rustTest" test) due to 3 previous errors; 42 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rustTest` (bin "rustTest") due to 3 previous errors; 42 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "49041daac33ca76a61cc1512c6b15eda5bc6f2cec1476f5ae081b74c9f8dc52b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49041daac33ca76a61cc1512c6b15eda5bc6f2cec1476f5ae081b74c9f8dc52b", kill_on_drop: false }`
[INFO] [stdout] 49041daac33ca76a61cc1512c6b15eda5bc6f2cec1476f5ae081b74c9f8dc52b