[INFO] cloning repository https://github.com/dli98/rust-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dli98/rust-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdli98%2Frust-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdli98%2Frust-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f835ba211a2d3f9536cffbe28cfe62118cd6c1bf
[INFO] checking dli98/rust-demo against master#779e19d8baa3e3625bd4fc5c85cbb2ad47b43155 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdli98%2Frust-demo" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dli98/rust-demo
[INFO] finished tweaking git repo https://github.com/dli98/rust-demo
[INFO] tweaked toml for git repo https://github.com/dli98/rust-demo written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dli98/rust-demo on toolchain 779e19d8baa3e3625bd4fc5c85cbb2ad47b43155
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dli98/rust-demo 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" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5866b258a32d54017ce3748a98bb1b325eb73d347b0c91a185bf1cca6c4ed527
[INFO] running `Command { std: "docker" "start" "-a" "5866b258a32d54017ce3748a98bb1b325eb73d347b0c91a185bf1cca6c4ed527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5866b258a32d54017ce3748a98bb1b325eb73d347b0c91a185bf1cca6c4ed527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5866b258a32d54017ce3748a98bb1b325eb73d347b0c91a185bf1cca6c4ed527", kill_on_drop: false }`
[INFO] [stdout] 5866b258a32d54017ce3748a98bb1b325eb73d347b0c91a185bf1cca6c4ed527
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac73342af27929b47094509a8937f5b46c235f406086e87c772b856aff58499f
[INFO] running `Command { std: "docker" "start" "-a" "ac73342af27929b47094509a8937f5b46c235f406086e87c772b856aff58499f", kill_on_drop: false }`
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[INFO] [stderr]     Checking world_hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> examples/sync_basics.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut counter = Arc::new(Mutex::new(0));
[INFO] [stdout]   |         ----^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> examples/sync_basics.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             for j in 0..1000 {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rpc::types::TransactionRequest`
[INFO] [stdout]  --> examples/alloy_contract_call.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     rpc::types::TransactionRequest,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> examples/tokio_mpsc.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         _ => {
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> examples/tokio_mpsc.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |         (Ok(v1), Ok(v2), Ok(v3)) => {
[INFO] [stdout]    |         ------------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 73 |         (Err(e), _, _) | (_, Err(e), _) | (_, _, Err(e)) => {
[INFO] [stdout]    |         ------------------------------------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 78 |         _ => {
[INFO] [stdout]    |         ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v1`
[INFO] [stdout]   --> examples/tokio_mpsc.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         (Ok(v1), Ok(v2), Ok(v3)) => {
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_v1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]   --> examples/tokio_mpsc.rs:69:21
[INFO] [stdout]    |
[INFO] [stdout] 69 |         (Ok(v1), Ok(v2), Ok(v3)) => {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v3`
[INFO] [stdout]   --> examples/tokio_mpsc.rs:69:29
[INFO] [stdout]    |
[INFO] [stdout] 69 |         (Ok(v1), Ok(v2), Ok(v3)) => {
[INFO] [stdout]    |                             ^^ help: if this is intentional, prefix it with an underscore: `_v3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> examples/tokio_mpsc.rs:73:14
[INFO] [stdout]    |
[INFO] [stdout] 73 |         (Err(e), _, _) | (_, Err(e), _) | (_, _, Err(e)) => {
[INFO] [stdout]    |              ^                   ^                   ^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 73 |         (Err(_e), _, _) | (_, Err(_e), _) | (_, _, Err(_e)) => {
[INFO] [stdout]    |              +                    +                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 33s
[INFO] running `Command { std: "docker" "inspect" "ac73342af27929b47094509a8937f5b46c235f406086e87c772b856aff58499f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac73342af27929b47094509a8937f5b46c235f406086e87c772b856aff58499f", kill_on_drop: false }`
[INFO] [stdout] ac73342af27929b47094509a8937f5b46c235f406086e87c772b856aff58499f