[INFO] cloning repository https://github.com/kirugan/little-database
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kirugan/little-database" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirugan%2Flittle-database", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirugan%2Flittle-database'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 794bfe2c40fb82e985fe66d129b40c33cc5c0b89
[INFO] testing kirugan/little-database against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirugan%2Flittle-database" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kirugan/little-database on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kirugan/little-database
[INFO] finished tweaking git repo https://github.com/kirugan/little-database
[INFO] tweaked toml for git repo https://github.com/kirugan/little-database written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/kirugan/little-database already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] 3740d508680f5a24f5a761869509ea33f96b4a45130870bd6b4f376d0501a4a1
[INFO] running `Command { std: "docker" "start" "-a" "3740d508680f5a24f5a761869509ea33f96b4a45130870bd6b4f376d0501a4a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3740d508680f5a24f5a761869509ea33f96b4a45130870bd6b4f376d0501a4a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3740d508680f5a24f5a761869509ea33f96b4a45130870bd6b4f376d0501a4a1", kill_on_drop: false }`
[INFO] [stdout] 3740d508680f5a24f5a761869509ea33f96b4a45130870bd6b4f376d0501a4a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f178ef7d2a305b9068ab8e737bb4a38752d11a8820cf89a8892e006f412027a0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f178ef7d2a305b9068ab8e737bb4a38752d11a8820cf89a8892e006f412027a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling crossbeam-utils v0.5.0
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling slab v0.4.1
[INFO] [stderr]    Compiling lazycell v1.2.0
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling tokio-executor v0.1.5
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling smallvec v0.6.5
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling lock_api v0.1.4
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling tokio-current-thread v0.1.3
[INFO] [stderr]    Compiling tokio-timer v0.2.7
[INFO] [stderr]    Compiling bytes v0.4.10
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling tokio-io v0.1.10
[INFO] [stderr]    Compiling crossbeam-deque v0.6.1
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-threadpool v0.1.8
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling tokio-reactor v0.1.6
[INFO] [stderr]    Compiling tokio-fs v0.1.4
[INFO] [stderr]    Compiling tokio-tcp v0.1.2
[INFO] [stderr]    Compiling tokio-uds v0.2.3
[INFO] [stderr]    Compiling tokio-udp v0.1.2
[INFO] [stderr]    Compiling tokio v0.1.11
[INFO] [stderr]    Compiling RustLearning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `BufferPool`
[INFO] [stdout]   --> src/main.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let pool = BufferPool::new();
[INFO] [stdout]    |                ^^^^^^^^^^ use of undeclared type or module `BufferPool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `int` in this scope
[INFO] [stdout]  --> src/main.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | type OID = int;
[INFO] [stdout]   |            ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `page` in this scope
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     page = pool.get_page(0);
[INFO] [stdout]    |     ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/main.rs:9:17
[INFO] [stdout]    |
[INFO] [stdout] 7  | / fn main() {
[INFO] [stdout] 8  | |     let mut manager = block_manager::BlockManager::open("H:\\RustLearning\\commit.log", 4026).unwrap();
[INFO] [stdout] 9  | |     let block = manager.read_block(0)?;
[INFO] [stdout]    | |                 ^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 10 | |
[INFO] [stdout] ...  |
[INFO] [stdout] 18 | |     println!("done")
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0412, E0425, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `RustLearning`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f178ef7d2a305b9068ab8e737bb4a38752d11a8820cf89a8892e006f412027a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f178ef7d2a305b9068ab8e737bb4a38752d11a8820cf89a8892e006f412027a0", kill_on_drop: false }`
[INFO] [stdout] f178ef7d2a305b9068ab8e737bb4a38752d11a8820cf89a8892e006f412027a0