[INFO] cloning repository https://github.com/foxy4096/rust_is_fun
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/foxy4096/rust_is_fun" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffoxy4096%2Frust_is_fun", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffoxy4096%2Frust_is_fun'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f862bf511703039e2e47437b01f07f5f875a7398
[INFO] testing foxy4096/rust_is_fun against 1.99.0-beta.8 for beta-1.100-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffoxy4096%2Frust_is_fun" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/foxy4096/rust_is_fun
[INFO] finished tweaking git repo https://github.com/foxy4096/rust_is_fun
[INFO] tweaked toml for git repo https://github.com/foxy4096/rust_is_fun written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/foxy4096/rust_is_fun on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/foxy4096/rust_is_fun 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded getrandom v0.2.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c03903a1062109b3029c79d88b0d8aa758dda86c71a0885e4226d10b1fa4e438
[INFO] running `Command { std: "docker" "start" "c03903a1062109b3029c79d88b0d8aa758dda86c71a0885e4226d10b1fa4e438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c03903a1062109b3029c79d88b0d8aa758dda86c71a0885e4226d10b1fa4e438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c03903a1062109b3029c79d88b0d8aa758dda86c71a0885e4226d10b1fa4e438" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c03903a1062109b3029c79d88b0d8aa758dda86c71a0885e4226d10b1fa4e438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c03903a1062109b3029c79d88b0d8aa758dda86c71a0885e4226d10b1fa4e438" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rust_is_fun v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0502]: cannot borrow `x` as immutable because it is also borrowed as mutable
[INFO] [stdout]  --> src/main.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let y =  &mut x;
[INFO] [stdout]   |              ------ mutable borrow occurs here
[INFO] [stdout] 4 |     println!("{x} : {y}");
[INFO] [stdout]   |                ^     - mutable borrow later used here
[INFO] [stdout]   |                |
[INFO] [stdout]   |                immutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_is_fun` (bin "rust_is_fun") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "c03903a1062109b3029c79d88b0d8aa758dda86c71a0885e4226d10b1fa4e438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c03903a1062109b3029c79d88b0d8aa758dda86c71a0885e4226d10b1fa4e438", kill_on_drop: false }`
[INFO] [stdout] c03903a1062109b3029c79d88b0d8aa758dda86c71a0885e4226d10b1fa4e438
