[INFO] cloning repository https://github.com/bitfriend/mintbase-rust-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bitfriend/mintbase-rust-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitfriend%2Fmintbase-rust-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitfriend%2Fmintbase-rust-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0df272aa819bfdd6deef0c15c5e51ec8787b58e2
[INFO] checking bitfriend/mintbase-rust-challenge against master#2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4 for pr-84385
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitfriend%2Fmintbase-rust-challenge" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bitfriend/mintbase-rust-challenge on toolchain 2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bitfriend/mintbase-rust-challenge
[INFO] finished tweaking git repo https://github.com/bitfriend/mintbase-rust-challenge
[INFO] tweaked toml for git repo https://github.com/bitfriend/mintbase-rust-challenge written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/bitfriend/mintbase-rust-challenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yahoo_finance_api v1.2.2
[INFO] [stderr]   Downloaded async-compat v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df600edaf91a3f088224c6a0475c7ef105fd5f41db6cbd4c0a552b7b4ffa8ec2
[INFO] running `Command { std: "docker" "start" "-a" "df600edaf91a3f088224c6a0475c7ef105fd5f41db6cbd4c0a552b7b4ffa8ec2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df600edaf91a3f088224c6a0475c7ef105fd5f41db6cbd4c0a552b7b4ffa8ec2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df600edaf91a3f088224c6a0475c7ef105fd5f41db6cbd4c0a552b7b4ffa8ec2", kill_on_drop: false }`
[INFO] [stdout] df600edaf91a3f088224c6a0475c7ef105fd5f41db6cbd4c0a552b7b4ffa8ec2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5516f7bdf2670da9a6d2435a3583d5d48a7da623e97815e14407d21c81cfaaf9
[INFO] running `Command { std: "docker" "start" "-a" "5516f7bdf2670da9a6d2435a3583d5d48a7da623e97815e14407d21c81cfaaf9", kill_on_drop: false }`
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[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]   --> src/task_iii.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 |     while let res = rx.recv().await {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]  --> src/task_ii.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |             Err(e) => {},
[INFO] [stdout]   |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]   --> src/task_iii.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 |     while let res = rx.recv().await {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]  --> src/task_ii.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |             Err(e) => {},
[INFO] [stdout]   |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/task_iii.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |                 tx_clone.send(res).await;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/task_iii.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |                 tx_clone.send(res).await;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.54s
[INFO] running `Command { std: "docker" "inspect" "5516f7bdf2670da9a6d2435a3583d5d48a7da623e97815e14407d21c81cfaaf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5516f7bdf2670da9a6d2435a3583d5d48a7da623e97815e14407d21c81cfaaf9", kill_on_drop: false }`
[INFO] [stdout] 5516f7bdf2670da9a6d2435a3583d5d48a7da623e97815e14407d21c81cfaaf9