[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] checking tobz/ring-buffer-on-disk-rs against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[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-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tobz/ring-buffer-on-disk-rs on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "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-tc1/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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1fa11fa4335011ee3e2067a9b59dc4395e1f9d753087d457de7e59f7d592979a
[INFO] running `Command { std: "docker" "start" "-a" "1fa11fa4335011ee3e2067a9b59dc4395e1f9d753087d457de7e59f7d592979a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1fa11fa4335011ee3e2067a9b59dc4395e1f9d753087d457de7e59f7d592979a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fa11fa4335011ee3e2067a9b59dc4395e1f9d753087d457de7e59f7d592979a", kill_on_drop: false }`
[INFO] [stdout] 1fa11fa4335011ee3e2067a9b59dc4395e1f9d753087d457de7e59f7d592979a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39c0c45d2b37d75aabaea6760edb2eb9f3bcfefb5d63e1ecd706269b6d9717ab
[INFO] running `Command { std: "docker" "start" "-a" "39c0c45d2b37d75aabaea6760edb2eb9f3bcfefb5d63e1ecd706269b6d9717ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking memmap2 v0.3.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking 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: 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: 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: 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] [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] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "39c0c45d2b37d75aabaea6760edb2eb9f3bcfefb5d63e1ecd706269b6d9717ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39c0c45d2b37d75aabaea6760edb2eb9f3bcfefb5d63e1ecd706269b6d9717ab", kill_on_drop: false }`
[INFO] [stdout] 39c0c45d2b37d75aabaea6760edb2eb9f3bcfefb5d63e1ecd706269b6d9717ab