[INFO] cloning repository https://github.com/beebozy/Rust-Learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/beebozy/Rust-Learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeebozy%2FRust-Learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeebozy%2FRust-Learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 20a0be440d7f8bc6a9e1aa2dc9a3a0f1d21bf111
[INFO] checking beebozy/Rust-Learning against master#9c3064e131f4939cc95a29bb11413c49bbda1491 for pr-144098
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeebozy%2FRust-Learning" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/beebozy/Rust-Learning
[INFO] finished tweaking git repo https://github.com/beebozy/Rust-Learning
[INFO] tweaked toml for git repo https://github.com/beebozy/Rust-Learning written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/beebozy/Rust-Learning on toolchain 9c3064e131f4939cc95a29bb11413c49bbda1491
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/beebozy/Rust-Learning 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" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 915369d3c7376fd5cc5afe25ee60da15482624c53b63dc1ae5a59c48511aed25
[INFO] running `Command { std: "docker" "start" "-a" "915369d3c7376fd5cc5afe25ee60da15482624c53b63dc1ae5a59c48511aed25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "915369d3c7376fd5cc5afe25ee60da15482624c53b63dc1ae5a59c48511aed25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "915369d3c7376fd5cc5afe25ee60da15482624c53b63dc1ae5a59c48511aed25", kill_on_drop: false }`
[INFO] [stdout] 915369d3c7376fd5cc5afe25ee60da15482624c53b63dc1ae5a59c48511aed25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0305c59435038c46b5f7ad763d17d3348383b7c5041764b6c8550fa09a5bb10b
[INFO] running `Command { std: "docker" "start" "-a" "0305c59435038c46b5f7ad763d17d3348383b7c5041764b6c8550fa09a5bb10b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling serde_json v1.0.134
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking itoa v1.0.14
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.94
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]     Checking json_Writer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `User as DeserializeUser`
[INFO] [stdout]  --> src/main.rs:5:37
[INFO] [stdout]   |
[INFO] [stdout] 5 | use deserialize::{deserialize_user, User as DeserializeUser};
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `User as DeserializeUser`
[INFO] [stdout]  --> src/main.rs:5:37
[INFO] [stdout]   |
[INFO] [stdout] 5 | use deserialize::{deserialize_user, User as DeserializeUser};
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.84s
[INFO] running `Command { std: "docker" "inspect" "0305c59435038c46b5f7ad763d17d3348383b7c5041764b6c8550fa09a5bb10b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0305c59435038c46b5f7ad763d17d3348383b7c5041764b6c8550fa09a5bb10b", kill_on_drop: false }`
[INFO] [stdout] 0305c59435038c46b5f7ad763d17d3348383b7c5041764b6c8550fa09a5bb10b