[INFO] cloning repository https://github.com/Arpityadav/kvstore
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Arpityadav/kvstore" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArpityadav%2Fkvstore", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArpityadav%2Fkvstore'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49357ccddcf6cdc55450bae488f3a8b0bd57d489
[INFO] testing Arpityadav/kvstore against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArpityadav%2Fkvstore" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Arpityadav/kvstore on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Arpityadav/kvstore
[INFO] finished tweaking git repo https://github.com/Arpityadav/kvstore
[INFO] tweaked toml for git repo https://github.com/Arpityadav/kvstore written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Arpityadav/kvstore already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 90b4b54001016e84d98ac74b6c866ece4ceee0d7cf8dde4f1bf1bd9a91af91f9
[INFO] running `Command { std: "docker" "start" "-a" "90b4b54001016e84d98ac74b6c866ece4ceee0d7cf8dde4f1bf1bd9a91af91f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90b4b54001016e84d98ac74b6c866ece4ceee0d7cf8dde4f1bf1bd9a91af91f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90b4b54001016e84d98ac74b6c866ece4ceee0d7cf8dde4f1bf1bd9a91af91f9", kill_on_drop: false }`
[INFO] [stdout] 90b4b54001016e84d98ac74b6c866ece4ceee0d7cf8dde4f1bf1bd9a91af91f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 416af8668aa22be9cf7d30096117185c6abbb1f706f90c8f1944002441952c12
[INFO] running `Command { std: "docker" "start" "-a" "416af8668aa22be9cf7d30096117185c6abbb1f706f90c8f1944002441952c12", kill_on_drop: false }`
[INFO] [stderr]    Compiling kvstore v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0596]: cannot borrow `database` as mutable, as it is not declared as mutable
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let database = Database::new().expect("Creating DB failed.");
[INFO] [stdout]    |         -------- help: consider changing this to be mutable: `mut database`
[INFO] [stdout] 16 |     database.insert(key.to_uppercase(), value.clone());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot borrow as mutable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `database` as mutable, as it is not declared as mutable
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let database = Database::new().expect("Creating DB failed.");
[INFO] [stdout]    |         -------- help: consider changing this to be mutable: `mut database`
[INFO] [stdout] 16 |     database.insert(key.to_uppercase(), value.clone());
[INFO] [stdout] 17 |     database.insert(key, value);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot borrow as mutable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kvstore` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "416af8668aa22be9cf7d30096117185c6abbb1f706f90c8f1944002441952c12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "416af8668aa22be9cf7d30096117185c6abbb1f706f90c8f1944002441952c12", kill_on_drop: false }`
[INFO] [stdout] 416af8668aa22be9cf7d30096117185c6abbb1f706f90c8f1944002441952c12