[INFO] cloning repository https://github.com/tobz/ring-buffer-on-disk-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tobz/ring-buffer-on-disk-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftobz%2Fring-buffer-on-disk-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftobz%2Fring-buffer-on-disk-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d12376e409952da9cbd9672115e4ca1f90994d8d
[INFO] testing tobz/ring-buffer-on-disk-rs against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftobz%2Fring-buffer-on-disk-rs" "/workspace/builds/worker-27/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-27/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tobz/ring-buffer-on-disk-rs 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/tobz/ring-buffer-on-disk-rs
[INFO] finished tweaking git repo https://github.com/tobz/ring-buffer-on-disk-rs
[INFO] tweaked toml for git repo https://github.com/tobz/ring-buffer-on-disk-rs written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate git repo https://github.com/tobz/ring-buffer-on-disk-rs 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 0bbc2aaab4caa938815a721bd187abf961e17e38db9a2eea0366226d579f0440
[INFO] running `Command { std: "docker" "start" "-a" "0bbc2aaab4caa938815a721bd187abf961e17e38db9a2eea0366226d579f0440", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bbc2aaab4caa938815a721bd187abf961e17e38db9a2eea0366226d579f0440", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bbc2aaab4caa938815a721bd187abf961e17e38db9a2eea0366226d579f0440", kill_on_drop: false }`
[INFO] [stdout] 0bbc2aaab4caa938815a721bd187abf961e17e38db9a2eea0366226d579f0440
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 499d26c50fe170e4f4e4b61250473d2a7c567ee4819120cdc64f796f5bd4ba0c
[INFO] running `Command { std: "docker" "start" "-a" "499d26c50fe170e4f4e4b61250473d2a7c567ee4819120cdc64f796f5bd4ba0c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling memmap2 v0.3.1
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling spsc-mmap-disk-buffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `default`, `fmt::Write`, `mem`, `ops::Deref`, `ptr`, `slice`, `thread`, `time::Duration`
[INFO] [stdout]   --> src/main.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     default,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 58 |     fmt::Write,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 59 |     fs::OpenOptions,
[INFO] [stdout] 60 |     io, mem,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 61 |     ops::Deref,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 62 |     path::{Path, PathBuf},
[INFO] [stdout] 63 |     ptr, slice,
[INFO] [stdout]    |     ^^^  ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     thread,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 69 |     time::Duration,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `allocate_record_id`
[INFO] [stdout]    --> src/main.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn allocate_record_id(&self) -> u64 {
[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: `get_reader_current_data_file_path`
[INFO] [stdout]    --> src/main.rs:215:12
[INFO] [stdout]     |
[INFO] [stdout] 215 |     pub fn get_reader_current_data_file_path(&self) -> PathBuf {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `state`
[INFO] [stdout]    --> src/main.rs:227:12
[INFO] [stdout]     |
[INFO] [stdout] 227 |     pub fn state(&self) -> &LedgerState {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `data_dir`
[INFO] [stdout]    --> src/main.rs:231:12
[INFO] [stdout]     |
[INFO] [stdout] 231 |     pub fn data_dir(&self) -> &PathBuf {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deserialize_from`
[INFO] [stdout]    --> src/main.rs:347:12
[INFO] [stdout]     |
[INFO] [stdout] 347 |     pub fn deserialize_from(&mut self, src: &[u8]) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deserialize_from`
[INFO] [stdout]    --> src/main.rs:394:12
[INFO] [stdout]     |
[INFO] [stdout] 394 |     pub fn deserialize_from(&mut self, src: &[u8]) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ledger`
[INFO] [stdout]    --> src/main.rs:593:5
[INFO] [stdout]     |
[INFO] [stdout] 593 |     ledger: Arc<Ledger>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ledger`
[INFO] [stdout]    --> src/main.rs:614:5
[INFO] [stdout]     |
[INFO] [stdout] 614 |     ledger: Arc<Ledger>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data_file`
[INFO] [stdout]    --> src/main.rs:615:5
[INFO] [stdout]     |
[INFO] [stdout] 615 |     data_file: Option<MmapMut>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.58s
[INFO] running `Command { std: "docker" "inspect" "499d26c50fe170e4f4e4b61250473d2a7c567ee4819120cdc64f796f5bd4ba0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "499d26c50fe170e4f4e4b61250473d2a7c567ee4819120cdc64f796f5bd4ba0c", kill_on_drop: false }`
[INFO] [stdout] 499d26c50fe170e4f4e4b61250473d2a7c567ee4819120cdc64f796f5bd4ba0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] b9c6783741c9bccd0e6486f413b30a2f031e63765498ed5cf1251b0a1c8f8f98
[INFO] running `Command { std: "docker" "start" "-a" "b9c6783741c9bccd0e6486f413b30a2f031e63765498ed5cf1251b0a1c8f8f98", kill_on_drop: false }`
[INFO] [stderr]    Compiling spsc-mmap-disk-buffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `default`, `fmt::Write`, `mem`, `ops::Deref`, `ptr`, `slice`, `thread`, `time::Duration`
[INFO] [stdout]   --> src/main.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     default,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 58 |     fmt::Write,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 59 |     fs::OpenOptions,
[INFO] [stdout] 60 |     io, mem,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 61 |     ops::Deref,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 62 |     path::{Path, PathBuf},
[INFO] [stdout] 63 |     ptr, slice,
[INFO] [stdout]    |     ^^^  ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     thread,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 69 |     time::Duration,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `allocate_record_id`
[INFO] [stdout]    --> src/main.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn allocate_record_id(&self) -> u64 {
[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: `get_reader_current_data_file_path`
[INFO] [stdout]    --> src/main.rs:215:12
[INFO] [stdout]     |
[INFO] [stdout] 215 |     pub fn get_reader_current_data_file_path(&self) -> PathBuf {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `state`
[INFO] [stdout]    --> src/main.rs:227:12
[INFO] [stdout]     |
[INFO] [stdout] 227 |     pub fn state(&self) -> &LedgerState {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `data_dir`
[INFO] [stdout]    --> src/main.rs:231:12
[INFO] [stdout]     |
[INFO] [stdout] 231 |     pub fn data_dir(&self) -> &PathBuf {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deserialize_from`
[INFO] [stdout]    --> src/main.rs:347:12
[INFO] [stdout]     |
[INFO] [stdout] 347 |     pub fn deserialize_from(&mut self, src: &[u8]) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deserialize_from`
[INFO] [stdout]    --> src/main.rs:394:12
[INFO] [stdout]     |
[INFO] [stdout] 394 |     pub fn deserialize_from(&mut self, src: &[u8]) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ledger`
[INFO] [stdout]    --> src/main.rs:593:5
[INFO] [stdout]     |
[INFO] [stdout] 593 |     ledger: Arc<Ledger>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ledger`
[INFO] [stdout]    --> src/main.rs:614:5
[INFO] [stdout]     |
[INFO] [stdout] 614 |     ledger: Arc<Ledger>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data_file`
[INFO] [stdout]    --> src/main.rs:615:5
[INFO] [stdout]     |
[INFO] [stdout] 615 |     data_file: Option<MmapMut>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "b9c6783741c9bccd0e6486f413b30a2f031e63765498ed5cf1251b0a1c8f8f98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9c6783741c9bccd0e6486f413b30a2f031e63765498ed5cf1251b0a1c8f8f98", kill_on_drop: false }`
[INFO] [stdout] b9c6783741c9bccd0e6486f413b30a2f031e63765498ed5cf1251b0a1c8f8f98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 09660b34cc6186d133cf68ef2cc6c39b77a3866286aee139b9cb7caf90561d50
[INFO] running `Command { std: "docker" "start" "-a" "09660b34cc6186d133cf68ef2cc6c39b77a3866286aee139b9cb7caf90561d50", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `default`, `fmt::Write`, `mem`, `ops::Deref`, `ptr`, `slice`, `thread`, `time::Duration`
[INFO] [stderr]   --> src/main.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     default,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 58 |     fmt::Write,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 59 |     fs::OpenOptions,
[INFO] [stderr] 60 |     io, mem,
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 61 |     ops::Deref,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 62 |     path::{Path, PathBuf},
[INFO] [stderr] 63 |     ptr, slice,
[INFO] [stderr]    |     ^^^  ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 68 |     thread,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 69 |     time::Duration,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `allocate_record_id`
[INFO] [stderr]    --> src/main.rs:100:12
[INFO] [stderr]     |
[INFO] [stderr] 100 |     pub fn allocate_record_id(&self) -> u64 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_reader_current_data_file_path`
[INFO] [stderr]    --> src/main.rs:215:12
[INFO] [stderr]     |
[INFO] [stderr] 215 |     pub fn get_reader_current_data_file_path(&self) -> PathBuf {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `state`
[INFO] [stderr]    --> src/main.rs:227:12
[INFO] [stderr]     |
[INFO] [stderr] 227 |     pub fn state(&self) -> &LedgerState {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `data_dir`
[INFO] [stderr]    --> src/main.rs:231:12
[INFO] [stderr]     |
[INFO] [stderr] 231 |     pub fn data_dir(&self) -> &PathBuf {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `deserialize_from`
[INFO] [stderr]    --> src/main.rs:347:12
[INFO] [stderr]     |
[INFO] [stderr] 347 |     pub fn deserialize_from(&mut self, src: &[u8]) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `deserialize_from`
[INFO] [stderr]    --> src/main.rs:394:12
[INFO] [stderr]     |
[INFO] [stderr] 394 |     pub fn deserialize_from(&mut self, src: &[u8]) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `ledger`
[INFO] [stderr]    --> src/main.rs:593:5
[INFO] [stderr]     |
[INFO] [stderr] 593 |     ledger: Arc<Ledger>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `ledger`
[INFO] [stderr]    --> src/main.rs:614:5
[INFO] [stderr]     |
[INFO] [stderr] 614 |     ledger: Arc<Ledger>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `data_file`
[INFO] [stderr]    --> src/main.rs:615:5
[INFO] [stderr]     |
[INFO] [stderr] 615 |     data_file: Option<MmapMut>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `spsc-mmap-disk-buffer` (bin "spsc-mmap-disk-buffer" test) generated 10 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/spsc_mmap_disk_buffer-068094ac06f424fe)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "09660b34cc6186d133cf68ef2cc6c39b77a3866286aee139b9cb7caf90561d50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09660b34cc6186d133cf68ef2cc6c39b77a3866286aee139b9cb7caf90561d50", kill_on_drop: false }`
[INFO] [stdout] 09660b34cc6186d133cf68ef2cc6c39b77a3866286aee139b9cb7caf90561d50