[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 try#17092ad00ed8fe1e7f81a7e38238ff70779034b1 for pr-140985
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftobz%2Fring-buffer-on-disk-rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tobz/ring-buffer-on-disk-rs on toolchain 17092ad00ed8fe1e7f81a7e38238ff70779034b1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "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-2-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f82ee2955252b19694c026a8508953e72d1140715792dbbdb1924882ed8f8b19
[INFO] running `Command { std: "docker" "start" "-a" "f82ee2955252b19694c026a8508953e72d1140715792dbbdb1924882ed8f8b19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f82ee2955252b19694c026a8508953e72d1140715792dbbdb1924882ed8f8b19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f82ee2955252b19694c026a8508953e72d1140715792dbbdb1924882ed8f8b19", kill_on_drop: false }`
[INFO] [stdout] f82ee2955252b19694c026a8508953e72d1140715792dbbdb1924882ed8f8b19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30a0f98a809f15aba9bd9449d8cfbee37515cc50bff531b638cbdead1fa7855b
[INFO] running `Command { std: "docker" "start" "-a" "30a0f98a809f15aba9bd9449d8cfbee37515cc50bff531b638cbdead1fa7855b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling lock_api v0.4.5
[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`, and `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: method `allocate_record_id` is never used
[INFO] [stdout]    --> src/main.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 99  | impl LedgerState {
[INFO] [stdout]     | ---------------- method in this implementation
[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: methods `get_reader_current_data_file_path`, `state`, and `data_dir` are never used
[INFO] [stdout]    --> src/main.rs:215:12
[INFO] [stdout]     |
[INFO] [stdout] 202 | impl Ledger {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 215 |     pub fn get_reader_current_data_file_path(&self) -> PathBuf {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 227 |     pub fn state(&self) -> &LedgerState {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 231 |     pub fn data_dir(&self) -> &PathBuf {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deserialize_from` is never used
[INFO] [stdout]    --> src/main.rs:347:12
[INFO] [stdout]     |
[INFO] [stdout] 300 | impl DataFileState {
[INFO] [stdout]     | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 347 |     pub fn deserialize_from(&mut self, src: &[u8]) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deserialize_from` is never used
[INFO] [stdout]    --> src/main.rs:394:12
[INFO] [stdout]     |
[INFO] [stdout] 373 | impl RecordHeader {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 394 |     pub fn deserialize_from(&mut self, src: &[u8]) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ledger` is never read
[INFO] [stdout]    --> src/main.rs:593:5
[INFO] [stdout]     |
[INFO] [stdout] 592 | struct Writer {
[INFO] [stdout]     |        ------ field in this struct
[INFO] [stdout] 593 |     ledger: Arc<Ledger>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ledger` and `data_file` are never read
[INFO] [stdout]    --> src/main.rs:614:5
[INFO] [stdout]     |
[INFO] [stdout] 613 | struct Reader {
[INFO] [stdout]     |        ------ fields in this struct
[INFO] [stdout] 614 |     ledger: Arc<Ledger>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 615 |     data_file: Option<MmapMut>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.90s
[INFO] running `Command { std: "docker" "inspect" "30a0f98a809f15aba9bd9449d8cfbee37515cc50bff531b638cbdead1fa7855b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30a0f98a809f15aba9bd9449d8cfbee37515cc50bff531b638cbdead1fa7855b", kill_on_drop: false }`
[INFO] [stdout] 30a0f98a809f15aba9bd9449d8cfbee37515cc50bff531b638cbdead1fa7855b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f6fb9815b303324adddc2fdfdf7e3543b17ec4ac441987b1dadf011d64c17dc
[INFO] running `Command { std: "docker" "start" "-a" "0f6fb9815b303324adddc2fdfdf7e3543b17ec4ac441987b1dadf011d64c17dc", 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`, and `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: method `allocate_record_id` is never used
[INFO] [stdout]    --> src/main.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 99  | impl LedgerState {
[INFO] [stdout]     | ---------------- method in this implementation
[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: methods `get_reader_current_data_file_path`, `state`, and `data_dir` are never used
[INFO] [stdout]    --> src/main.rs:215:12
[INFO] [stdout]     |
[INFO] [stdout] 202 | impl Ledger {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 215 |     pub fn get_reader_current_data_file_path(&self) -> PathBuf {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 227 |     pub fn state(&self) -> &LedgerState {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 231 |     pub fn data_dir(&self) -> &PathBuf {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deserialize_from` is never used
[INFO] [stdout]    --> src/main.rs:347:12
[INFO] [stdout]     |
[INFO] [stdout] 300 | impl DataFileState {
[INFO] [stdout]     | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 347 |     pub fn deserialize_from(&mut self, src: &[u8]) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deserialize_from` is never used
[INFO] [stdout]    --> src/main.rs:394:12
[INFO] [stdout]     |
[INFO] [stdout] 373 | impl RecordHeader {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 394 |     pub fn deserialize_from(&mut self, src: &[u8]) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ledger` is never read
[INFO] [stdout]    --> src/main.rs:593:5
[INFO] [stdout]     |
[INFO] [stdout] 592 | struct Writer {
[INFO] [stdout]     |        ------ field in this struct
[INFO] [stdout] 593 |     ledger: Arc<Ledger>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ledger` and `data_file` are never read
[INFO] [stdout]    --> src/main.rs:614:5
[INFO] [stdout]     |
[INFO] [stdout] 613 | struct Reader {
[INFO] [stdout]     |        ------ fields in this struct
[INFO] [stdout] 614 |     ledger: Arc<Ledger>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 615 |     data_file: Option<MmapMut>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "0f6fb9815b303324adddc2fdfdf7e3543b17ec4ac441987b1dadf011d64c17dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f6fb9815b303324adddc2fdfdf7e3543b17ec4ac441987b1dadf011d64c17dc", kill_on_drop: false }`
[INFO] [stdout] 0f6fb9815b303324adddc2fdfdf7e3543b17ec4ac441987b1dadf011d64c17dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2d98e7fdec193da0f1a6d7ba78be0f5463e5f4726c26324596a007cbf9783b7a
[INFO] running `Command { std: "docker" "start" "-a" "2d98e7fdec193da0f1a6d7ba78be0f5463e5f4726c26324596a007cbf9783b7a", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `default`, `fmt::Write`, `mem`, `ops::Deref`, `ptr`, `slice`, `thread`, and `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: method `allocate_record_id` is never used
[INFO] [stderr]    --> src/main.rs:100:12
[INFO] [stderr]     |
[INFO] [stderr] 99  | impl LedgerState {
[INFO] [stderr]     | ---------------- method in this implementation
[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: methods `get_reader_current_data_file_path`, `state`, and `data_dir` are never used
[INFO] [stderr]    --> src/main.rs:215:12
[INFO] [stderr]     |
[INFO] [stderr] 202 | impl Ledger {
[INFO] [stderr]     | ----------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 215 |     pub fn get_reader_current_data_file_path(&self) -> PathBuf {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 227 |     pub fn state(&self) -> &LedgerState {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 231 |     pub fn data_dir(&self) -> &PathBuf {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `deserialize_from` is never used
[INFO] [stderr]    --> src/main.rs:347:12
[INFO] [stderr]     |
[INFO] [stderr] 300 | impl DataFileState {
[INFO] [stderr]     | ------------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 347 |     pub fn deserialize_from(&mut self, src: &[u8]) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `deserialize_from` is never used
[INFO] [stderr]    --> src/main.rs:394:12
[INFO] [stderr]     |
[INFO] [stderr] 373 | impl RecordHeader {
[INFO] [stderr]     | ----------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 394 |     pub fn deserialize_from(&mut self, src: &[u8]) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `ledger` is never read
[INFO] [stderr]    --> src/main.rs:593:5
[INFO] [stderr]     |
[INFO] [stderr] 592 | struct Writer {
[INFO] [stderr]     |        ------ field in this struct
[INFO] [stderr] 593 |     ledger: Arc<Ledger>,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `ledger` and `data_file` are never read
[INFO] [stderr]    --> src/main.rs:614:5
[INFO] [stderr]     |
[INFO] [stderr] 613 | struct Reader {
[INFO] [stderr]     |        ------ fields in this struct
[INFO] [stderr] 614 |     ledger: Arc<Ledger>,
[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 7 warnings (run `cargo fix --bin "spsc-mmap-disk-buffer" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/spsc_mmap_disk_buffer-4d118d0ec3201206)
[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" "2d98e7fdec193da0f1a6d7ba78be0f5463e5f4726c26324596a007cbf9783b7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d98e7fdec193da0f1a6d7ba78be0f5463e5f4726c26324596a007cbf9783b7a", kill_on_drop: false }`
[INFO] [stdout] 2d98e7fdec193da0f1a6d7ba78be0f5463e5f4726c26324596a007cbf9783b7a