[INFO] cloning repository https://github.com/yubaoquan/test-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yubaoquan/test-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyubaoquan%2Ftest-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyubaoquan%2Ftest-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 02afc4612ef74738b81fd438cf5635bbaa9ab005
[INFO] checking yubaoquan/test-rust against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyubaoquan%2Ftest-rust" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yubaoquan/test-rust 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/yubaoquan/test-rust
[INFO] finished tweaking git repo https://github.com/yubaoquan/test-rust
[INFO] tweaked toml for git repo https://github.com/yubaoquan/test-rust written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/yubaoquan/test-rust 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] e1b92eb75ecb9d95f1c9e2bb719b4b581c28b1e1e83e2da145a6cb0b2d98d5c2
[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" "e1b92eb75ecb9d95f1c9e2bb719b4b581c28b1e1e83e2da145a6cb0b2d98d5c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1b92eb75ecb9d95f1c9e2bb719b4b581c28b1e1e83e2da145a6cb0b2d98d5c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1b92eb75ecb9d95f1c9e2bb719b4b581c28b1e1e83e2da145a6cb0b2d98d5c2", kill_on_drop: false }`
[INFO] [stdout] e1b92eb75ecb9d95f1c9e2bb719b4b581c28b1e1e83e2da145a6cb0b2d98d5c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 7fe1d29956310abae81564b83f01d6df221bbe2465025cc8ffe372b39549ac85
[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" "7fe1d29956310abae81564b83f01d6df221bbe2465025cc8ffe372b39549ac85", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_mockr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:21:16
[INFO] [stdout]    |
[INFO] [stdout] 21 | type Job = Box<FnBox + Send + 'static>;
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:21:16
[INFO] [stdout]    |
[INFO] [stdout] 21 | type Job = Box<FnBox + Send + 'static>;
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `workers`
[INFO] [stdout]   --> src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     workers: Vec<Worker>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> src/lib.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     id: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `thread`
[INFO] [stdout]   --> src/lib.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     thread: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `workers`
[INFO] [stdout]   --> src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     workers: Vec<Worker>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> src/lib.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     id: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `thread`
[INFO] [stdout]   --> src/lib.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     thread: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/main.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 |   let y = &x;
[INFO] [stdout]   |       ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/main.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 |   let s = "xdfasdf";
[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:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |   let s3 = concat(&s2, &s2);
[INFO] [stdout]   |       ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo`
[INFO] [stdout]   --> src/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn foo(s: &str) {
[INFO] [stdout]    |    ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/main.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 |   let y = &x;
[INFO] [stdout]   |       ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/main.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 |   let s = "xdfasdf";
[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:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |   let s3 = concat(&s2, &s2);
[INFO] [stdout]   |       ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo`
[INFO] [stdout]   --> src/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn foo(s: &str) {
[INFO] [stdout]    |    ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "7fe1d29956310abae81564b83f01d6df221bbe2465025cc8ffe372b39549ac85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fe1d29956310abae81564b83f01d6df221bbe2465025cc8ffe372b39549ac85", kill_on_drop: false }`
[INFO] [stdout] 7fe1d29956310abae81564b83f01d6df221bbe2465025cc8ffe372b39549ac85