[INFO] cloning repository https://github.com/gettsu/mydb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gettsu/mydb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgettsu%2Fmydb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgettsu%2Fmydb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9fd39efd4eee46601b627f46dcd172b007c33c51
[INFO] testing gettsu/mydb against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgettsu%2Fmydb" "/workspace/builds/worker-70/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-70/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gettsu/mydb on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gettsu/mydb
[INFO] finished tweaking git repo https://github.com/gettsu/mydb
[INFO] tweaked toml for git repo https://github.com/gettsu/mydb written to /workspace/builds/worker-70/source/Cargo.toml
[INFO] crate git repo https://github.com/gettsu/mydb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zerocopy v0.6.1
[INFO] [stderr]   Downloaded zerocopy-derive v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4cb3f94915c3c377102d1e5e9f932ebe6b836b795df0bfaad25267884ada7d4d
[INFO] running `Command { std: "docker" "start" "-a" "4cb3f94915c3c377102d1e5e9f932ebe6b836b795df0bfaad25267884ada7d4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cb3f94915c3c377102d1e5e9f932ebe6b836b795df0bfaad25267884ada7d4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cb3f94915c3c377102d1e5e9f932ebe6b836b795df0bfaad25267884ada7d4d", kill_on_drop: false }`
[INFO] [stdout] 4cb3f94915c3c377102d1e5e9f932ebe6b836b795df0bfaad25267884ada7d4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51692015e32ec28b2d1ff0696ea133dced202146ad490963f878719d48f071d3
[INFO] running `Command { std: "docker" "start" "-a" "51692015e32ec28b2d1ff0696ea133dced202146ad490963f878719d48f071d3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling fastrand v1.7.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling zerocopy-derive v0.3.1
[INFO] [stderr]    Compiling zerocopy v0.6.1
[INFO] [stderr]    Compiling relly v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `NoFreeBuffer`
[INFO] [stdout]   --> src/buffer.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     NoFreeBuffer,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/buffer.rs:9:10
[INFO] [stdout]    |
[INFO] [stdout] 9  | #[derive(Debug, thiserror::Error)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `usage_count`
[INFO] [stdout]   --> src/buffer.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     usage_count: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Frame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/buffer.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[derive(Debug, Default)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer`
[INFO] [stdout]   --> src/buffer.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     buffer: Rc<Buffer>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Frame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/buffer.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[derive(Debug, Default)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next_victim_id`
[INFO] [stdout]   --> src/buffer.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     next_victim_id: BufferId,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/buffer.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn new(pool_size: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]   --> src/buffer.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn size(&self) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `evict`
[INFO] [stdout]   --> src/buffer.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn evict(&mut self) -> Option<BufferId> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `increment_id`
[INFO] [stdout]   --> src/buffer.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn increment_id(&self, buffer_id: BufferId) -> BufferId {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BufferPoolManager`
[INFO] [stdout]    --> src/buffer.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub struct BufferPoolManager {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/buffer.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn new(disk: DiskManager, pool: BufferPool) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `fetch_page`
[INFO] [stdout]    --> src/buffer.rs:123:12
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn fetch_page(&mut self, page_id: PageId) -> Result<Rc<Buffer>, Error> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create_page`
[INFO] [stdout]    --> src/buffer.rs:149:12
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn create_page(&mut self) -> Result<Rc<Buffer>, Error> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `flush`
[INFO] [stdout]    --> src/buffer.rs:172:12
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn flush(&mut self) -> Result<(), Error> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `valid`
[INFO] [stdout]   --> src/disk.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn valid(self) -> Option<PageId> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_u64`
[INFO] [stdout]   --> src/disk.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn to_u64(self) -> u64 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DiskManager`
[INFO] [stdout]   --> src/disk.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub struct DiskManager {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/disk.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn new(heap_file: File) -> io::Result<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open`
[INFO] [stdout]   --> src/disk.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn open(heap_file_path: impl AsRef<Path>) -> io::Result<Self> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_page_data`
[INFO] [stdout]   --> src/disk.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn read_page_data(&mut self, page_id: PageId, data: &mut [u8]) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_page_data`
[INFO] [stdout]   --> src/disk.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn write_page_data(&mut self, page_id: PageId, data: &[u8]) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `allocate_page`
[INFO] [stdout]   --> src/disk.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn allocate_page(&mut self) -> PageId {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sync`
[INFO] [stdout]   --> src/disk.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn sync(&mut self) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |         self.heap_file.flush();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 28s
[INFO] running `Command { std: "docker" "inspect" "51692015e32ec28b2d1ff0696ea133dced202146ad490963f878719d48f071d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51692015e32ec28b2d1ff0696ea133dced202146ad490963f878719d48f071d3", kill_on_drop: false }`
[INFO] [stdout] 51692015e32ec28b2d1ff0696ea133dced202146ad490963f878719d48f071d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e06dd7b3cbc28ce321ac33adb9eca91346ebab8e8231da071f70239407ed78e
[INFO] running `Command { std: "docker" "start" "-a" "9e06dd7b3cbc28ce321ac33adb9eca91346ebab8e8231da071f70239407ed78e", kill_on_drop: false }`
[INFO] [stderr]    Compiling relly v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `flush`
[INFO] [stdout]    --> src/buffer.rs:172:12
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn flush(&mut self) -> Result<(), Error> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `valid`
[INFO] [stdout]   --> src/disk.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn valid(self) -> Option<PageId> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sync`
[INFO] [stdout]   --> src/disk.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn sync(&mut self) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |         self.heap_file.flush();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "9e06dd7b3cbc28ce321ac33adb9eca91346ebab8e8231da071f70239407ed78e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e06dd7b3cbc28ce321ac33adb9eca91346ebab8e8231da071f70239407ed78e", kill_on_drop: false }`
[INFO] [stdout] 9e06dd7b3cbc28ce321ac33adb9eca91346ebab8e8231da071f70239407ed78e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fa341181428c315b03c967e10eac919dce66cb3ec13f29c5e329fed71930078a
[INFO] running `Command { std: "docker" "start" "-a" "fa341181428c315b03c967e10eac919dce66cb3ec13f29c5e329fed71930078a", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `flush`
[INFO] [stderr]    --> src/buffer.rs:172:12
[INFO] [stderr]     |
[INFO] [stderr] 172 |     pub fn flush(&mut self) -> Result<(), Error> {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `valid`
[INFO] [stderr]   --> src/disk.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn valid(self) -> Option<PageId> {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `sync`
[INFO] [stderr]   --> src/disk.rs:90:12
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub fn sync(&mut self) -> io::Result<()> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/disk.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |         self.heap_file.flush();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `relly` (bin "relly" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.98s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/relly-0320b2a5da2ac38a)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test buffer::tests::test has been running for over 60 seconds
[INFO] [stdout] test disk::tests::test has been running for over 60 seconds
[INFO] [stdout] test buffer::tests::test ... ok
[INFO] [stdout] test disk::tests::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 75.87s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fa341181428c315b03c967e10eac919dce66cb3ec13f29c5e329fed71930078a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa341181428c315b03c967e10eac919dce66cb3ec13f29c5e329fed71930078a", kill_on_drop: false }`
[INFO] [stdout] fa341181428c315b03c967e10eac919dce66cb3ec13f29c5e329fed71930078a