[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 1.100.0-beta.1 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-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/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-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/foxy4096/rust_is_fun on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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] 0acfa29828e3bd55023c7a7be1e7e5798d9baf0f8542c2da8731921ab361d5ac
[INFO] running `Command { std: "docker" "start" "0acfa29828e3bd55023c7a7be1e7e5798d9baf0f8542c2da8731921ab361d5ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0acfa29828e3bd55023c7a7be1e7e5798d9baf0f8542c2da8731921ab361d5ac", 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" "0acfa29828e3bd55023c7a7be1e7e5798d9baf0f8542c2da8731921ab361d5ac" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0acfa29828e3bd55023c7a7be1e7e5798d9baf0f8542c2da8731921ab361d5ac", 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" "0acfa29828e3bd55023c7a7be1e7e5798d9baf0f8542c2da8731921ab361d5ac" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "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] [stderr] warning: unused dependency `rand`
[INFO] [stderr]  --> Cargo.toml:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | rand = "0.8.5"
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `rand`
[INFO] [stderr] warning: `rust_is_fun` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "inspect" "0acfa29828e3bd55023c7a7be1e7e5798d9baf0f8542c2da8731921ab361d5ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0acfa29828e3bd55023c7a7be1e7e5798d9baf0f8542c2da8731921ab361d5ac", kill_on_drop: false }`
[INFO] [stdout] 0acfa29828e3bd55023c7a7be1e7e5798d9baf0f8542c2da8731921ab361d5ac
