[INFO] cloning repository https://github.com/bmrxntfj/hello_cargo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bmrxntfj/hello_cargo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmrxntfj%2Fhello_cargo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmrxntfj%2Fhello_cargo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 086d758083575c960d63afb354cc5bc2e0a4fc10
[INFO] checking bmrxntfj/hello_cargo against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmrxntfj%2Fhello_cargo" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bmrxntfj/hello_cargo on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bmrxntfj/hello_cargo
[INFO] finished tweaking git repo https://github.com/bmrxntfj/hello_cargo
[INFO] tweaked toml for git repo https://github.com/bmrxntfj/hello_cargo written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/bmrxntfj/hello_cargo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d88f9c9502d4a3b52238df1ca68f6ea7c033be44ce831ffff5303a134710b51d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d88f9c9502d4a3b52238df1ca68f6ea7c033be44ce831ffff5303a134710b51d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d88f9c9502d4a3b52238df1ca68f6ea7c033be44ce831ffff5303a134710b51d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d88f9c9502d4a3b52238df1ca68f6ea7c033be44ce831ffff5303a134710b51d", kill_on_drop: false }`
[INFO] [stdout] d88f9c9502d4a3b52238df1ca68f6ea7c033be44ce831ffff5303a134710b51d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5305ff9b30c98357ea40b57d756db803e2e9cb9235735051e3f537b0ae6bc32e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5305ff9b30c98357ea40b57d756db803e2e9cb9235735051e3f537b0ae6bc32e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/main.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |             'secondloop:loop{
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:89:8
[INFO] [stdout]     |
[INFO] [stdout] 89  | #[warn(unused_labels)]
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:229:5
[INFO] [stdout]     |
[INFO] [stdout] 229 |     ///println!("box value is {:?}",boxvalue);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 230 | 
[INFO] [stdout] 231 |     let evenlist=vec![2,4,6,8,10];
[INFO] [stdout]     |     ------------------------------ rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:88:8
[INFO] [stdout]     |
[INFO] [stdout] 88  | #[warn(unused_doc_comments)]
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:284:7
[INFO] [stdout]     |
[INFO] [stdout] 284 |         ///println!("guessed:{}",guess);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 287 | /       let guess:u32=match guess.trim().parse(){
[INFO] [stdout] 288 | |         Ok(num)=>num,
[INFO] [stdout] 289 | |         Err(_)=>continue,
[INFO] [stdout] 290 | |       };
[INFO] [stdout]     | |________- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/main.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |             'secondloop:loop{
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:89:8
[INFO] [stdout]     |
[INFO] [stdout] 89  | #[warn(unused_labels)]
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:229:5
[INFO] [stdout]     |
[INFO] [stdout] 229 |     ///println!("box value is {:?}",boxvalue);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 230 | 
[INFO] [stdout] 231 |     let evenlist=vec![2,4,6,8,10];
[INFO] [stdout]     |     ------------------------------ rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:88:8
[INFO] [stdout]     |
[INFO] [stdout] 88  | #[warn(unused_doc_comments)]
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:284:7
[INFO] [stdout]     |
[INFO] [stdout] 284 |         ///println!("guessed:{}",guess);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 287 | /       let guess:u32=match guess.trim().parse(){
[INFO] [stdout] 288 | |         Ok(num)=>num,
[INFO] [stdout] 289 | |         Err(_)=>continue,
[INFO] [stdout] 290 | |       };
[INFO] [stdout]     | |________- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/main.rs:197:11
[INFO] [stdout]     |
[INFO] [stdout] 197 |     while let varx=vari{
[INFO] [stdout]     |           ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/main.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |     let sum:i32=0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `function`
[INFO] [stdout]  --> src/cypto/nested.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn function() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rnd`
[INFO] [stdout]   --> src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn rnd<'a>()->Person<'a>{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_mod_crate`
[INFO] [stdout]    --> src/main.rs:347:28
[INFO] [stdout]     |
[INFO] [stdout] 347 |     pub(in crate::util) fn hello_mod_crate(){
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_self`
[INFO] [stdout]    --> src/main.rs:352:18
[INFO] [stdout]     |
[INFO] [stdout] 352 |     pub(self) fn hello_self(){
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:351:12
[INFO] [stdout]     |
[INFO] [stdout] 351 |     #[warn(dead_code)]
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/main.rs:197:11
[INFO] [stdout]     |
[INFO] [stdout] 197 |     while let varx=vari{
[INFO] [stdout]     |           ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/main.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |     let sum:i32=0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `function`
[INFO] [stdout]  --> src/cypto/nested.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn function() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rnd`
[INFO] [stdout]   --> src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn rnd<'a>()->Person<'a>{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `execute_fn`
[INFO] [stdout]    --> src/main.rs:314:8
[INFO] [stdout]     |
[INFO] [stdout] 314 |     fn execute_fn<F>(f:F) where
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `execute_fn_mut`
[INFO] [stdout]    --> src/main.rs:321:8
[INFO] [stdout]     |
[INFO] [stdout] 321 |     fn execute_fn_mut<F>(mut f:F) where
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `noreturn`
[INFO] [stdout]    --> src/main.rs:337:8
[INFO] [stdout]     |
[INFO] [stdout] 337 |     fn noreturn()->!{
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_mod_crate`
[INFO] [stdout]    --> src/main.rs:347:28
[INFO] [stdout]     |
[INFO] [stdout] 347 |     pub(in crate::util) fn hello_mod_crate(){
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_self`
[INFO] [stdout]    --> src/main.rs:352:18
[INFO] [stdout]     |
[INFO] [stdout] 352 |     pub(self) fn hello_self(){
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:351:12
[INFO] [stdout]     |
[INFO] [stdout] 351 |     #[warn(dead_code)]
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.98s
[INFO] running `Command { std: "docker" "inspect" "5305ff9b30c98357ea40b57d756db803e2e9cb9235735051e3f537b0ae6bc32e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5305ff9b30c98357ea40b57d756db803e2e9cb9235735051e3f537b0ae6bc32e", kill_on_drop: false }`
[INFO] [stdout] 5305ff9b30c98357ea40b57d756db803e2e9cb9235735051e3f537b0ae6bc32e