[INFO] cloning repository https://github.com/Muktarsadiq/SQLite_clone
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Muktarsadiq/SQLite_clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMuktarsadiq%2FSQLite_clone", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMuktarsadiq%2FSQLite_clone'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] da93cb6bcc19a6a9e94a84a42c359126bf37fa23
[INFO] checking Muktarsadiq/SQLite_clone against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMuktarsadiq%2FSQLite_clone" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Muktarsadiq/SQLite_clone
[INFO] finished tweaking git repo https://github.com/Muktarsadiq/SQLite_clone
[INFO] tweaked toml for git repo https://github.com/Muktarsadiq/SQLite_clone written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Muktarsadiq/SQLite_clone on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Muktarsadiq/SQLite_clone 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05c05ae24643b38cdba70573d3e4a9a0ad674428f598713a113ecdf49a765b48
[INFO] running `Command { std: "docker" "start" "-a" "05c05ae24643b38cdba70573d3e4a9a0ad674428f598713a113ecdf49a765b48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05c05ae24643b38cdba70573d3e4a9a0ad674428f598713a113ecdf49a765b48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05c05ae24643b38cdba70573d3e4a9a0ad674428f598713a113ecdf49a765b48", kill_on_drop: false }`
[INFO] [stdout] 05c05ae24643b38cdba70573d3e4a9a0ad674428f598713a113ecdf49a765b48
[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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c74a5e37cb0896f933a63495141f3170fd3f4019f42f34c546bbc71f7772cb3
[INFO] running `Command { std: "docker" "start" "-a" "8c74a5e37cb0896f933a63495141f3170fd3f4019f42f34c546bbc71f7772cb3", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking scan_fmt v0.2.6
[INFO] [stderr]     Checking database v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `old_num_keys`
[INFO] [stdout]    --> src/main.rs:788:9
[INFO] [stdout]     |
[INFO] [stdout] 788 |     let old_num_keys = {
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_old_num_keys`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `offset`
[INFO] [stdout]     --> src/main.rs:1171:9
[INFO] [stdout]      |
[INFO] [stdout] 1171 |     let offset = match pager.file_descriptor.seek(SeekFrom::Start((page_num * PAGE_SIZE) as u64)) {
[INFO] [stdout]      |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_offset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LEAF_NODE_KEY_OFFSET` is never used
[INFO] [stdout]   --> src/main.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 | const LEAF_NODE_KEY_OFFSET: usize = 0;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LEAF_NODE_VALUE_OFFSET` is never used
[INFO] [stdout]   --> src/main.rs:57:7
[INFO] [stdout]    |
[INFO] [stdout] 57 | const LEAF_NODE_VALUE_OFFSET: usize = LEAF_NODE_KEY_OFFSET + LEAF_NODE_KEY_SIZE;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `leaf_node_next_leaf` is never used
[INFO] [stdout]    --> src/main.rs:101:4
[INFO] [stdout]     |
[INFO] [stdout] 101 | fn leaf_node_next_leaf(node: &[u8]) -> u32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_internal_node_child` is never used
[INFO] [stdout]    --> src/main.rs:188:4
[INFO] [stdout]     |
[INFO] [stdout] 188 | fn set_internal_node_child(node: &mut [u8], child_num: usize, page_num: u32) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `leaf_node_value_mut` is never used
[INFO] [stdout]    --> src/main.rs:248:4
[INFO] [stdout]     |
[INFO] [stdout] 248 | fn leaf_node_value_mut(node: &mut [u8], cell_num: usize) -> &mut [u8] {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_page_mut` is never used
[INFO] [stdout]    --> src/main.rs:259:4
[INFO] [stdout]     |
[INFO] [stdout] 259 | fn get_page_mut(pager: &mut Pager, page_num: usize) -> Option<&mut [u8; PAGE_SIZE]> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:976:12
[INFO] [stdout]     |
[INFO] [stdout] 975 | impl Table {
[INFO] [stdout]     | ---------- associated function in this implementation
[INFO] [stdout] 976 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:322:23
[INFO] [stdout]     |
[INFO] [stdout] 322 | fn table_start(table: &mut Table) -> Cursor {
[INFO] [stdout]     |                       ^^^^^^^^^^     ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 322 | fn table_start(table: &mut Table) -> Cursor<'_> {
[INFO] [stdout]     |                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:338:22
[INFO] [stdout]     |
[INFO] [stdout] 338 | fn table_find(table: &mut Table, key: usize) -> Cursor {
[INFO] [stdout]     |                      ^^^^^^^^^^                 ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 338 | fn table_find(table: &mut Table, key: usize) -> Cursor<'_> {
[INFO] [stdout]     |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:371:30
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn internal_node_find(table: &mut Table, page_num: usize, key: usize) -> Cursor {
[INFO] [stdout]     |                              ^^^^^^^^^^ the lifetime is elided here      ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn internal_node_find(table: &mut Table, page_num: usize, key: usize) -> Cursor<'_> {
[INFO] [stdout]     |                                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:447:26
[INFO] [stdout]     |
[INFO] [stdout] 447 | fn leaf_node_find(table: &mut Table, page_num: usize, key: u32) -> Cursor {
[INFO] [stdout]     |                          ^^^^^^^^^^ the lifetime is elided here    ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 447 | fn leaf_node_find(table: &mut Table, page_num: usize, key: u32) -> Cursor<'_> {
[INFO] [stdout]     |                                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `old_num_keys`
[INFO] [stdout]    --> src/main.rs:788:9
[INFO] [stdout]     |
[INFO] [stdout] 788 |     let old_num_keys = {
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_old_num_keys`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `offset`
[INFO] [stdout]     --> src/main.rs:1171:9
[INFO] [stdout]      |
[INFO] [stdout] 1171 |     let offset = match pager.file_descriptor.seek(SeekFrom::Start((page_num * PAGE_SIZE) as u64)) {
[INFO] [stdout]      |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_offset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `database` (bin "database" test) due to 16 previous errors; 13 warnings emitted
[INFO] [stdout] warning: constant `LEAF_NODE_KEY_OFFSET` is never used
[INFO] [stdout]   --> src/main.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 | const LEAF_NODE_KEY_OFFSET: usize = 0;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: constant `LEAF_NODE_VALUE_OFFSET` is never used
[INFO] [stdout]   --> src/main.rs:57:7
[INFO] [stdout]    |
[INFO] [stdout] 57 | const LEAF_NODE_VALUE_OFFSET: usize = LEAF_NODE_KEY_OFFSET + LEAF_NODE_KEY_SIZE;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `leaf_node_next_leaf` is never used
[INFO] [stdout]    --> src/main.rs:101:4
[INFO] [stdout]     |
[INFO] [stdout] 101 | fn leaf_node_next_leaf(node: &[u8]) -> u32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_internal_node_child` is never used
[INFO] [stdout]    --> src/main.rs:188:4
[INFO] [stdout]     |
[INFO] [stdout] 188 | fn set_internal_node_child(node: &mut [u8], child_num: usize, page_num: u32) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `leaf_node_value_mut` is never used
[INFO] [stdout]    --> src/main.rs:248:4
[INFO] [stdout]     |
[INFO] [stdout] 248 | fn leaf_node_value_mut(node: &mut [u8], cell_num: usize) -> &mut [u8] {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_page_mut` is never used
[INFO] [stdout]    --> src/main.rs:259:4
[INFO] [stdout]     |
[INFO] [stdout] 259 | fn get_page_mut(pager: &mut Pager, page_num: usize) -> Option<&mut [u8; PAGE_SIZE]> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:976:12
[INFO] [stdout]     |
[INFO] [stdout] 975 | impl Table {
[INFO] [stdout]     | ---------- associated function in this implementation
[INFO] [stdout] 976 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:322:23
[INFO] [stdout]     |
[INFO] [stdout] 322 | fn table_start(table: &mut Table) -> Cursor {
[INFO] [stdout]     |                       ^^^^^^^^^^     ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 322 | fn table_start(table: &mut Table) -> Cursor<'_> {
[INFO] [stdout]     |                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:338:22
[INFO] [stdout]     |
[INFO] [stdout] 338 | fn table_find(table: &mut Table, key: usize) -> Cursor {
[INFO] [stdout]     |                      ^^^^^^^^^^                 ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 338 | fn table_find(table: &mut Table, key: usize) -> Cursor<'_> {
[INFO] [stdout]     |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:371:30
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn internal_node_find(table: &mut Table, page_num: usize, key: usize) -> Cursor {
[INFO] [stdout]     |                              ^^^^^^^^^^ the lifetime is elided here      ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn internal_node_find(table: &mut Table, page_num: usize, key: usize) -> Cursor<'_> {
[INFO] [stdout]     |                                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:447:26
[INFO] [stdout]     |
[INFO] [stdout] 447 | fn leaf_node_find(table: &mut Table, page_num: usize, key: u32) -> Cursor {
[INFO] [stdout]     |                          ^^^^^^^^^^ the lifetime is elided here    ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 447 | fn leaf_node_find(table: &mut Table, page_num: usize, key: u32) -> Cursor<'_> {
[INFO] [stdout]     |                                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/main.rs:1394:22
[INFO] [stdout]      |
[INFO] [stdout] 1394 |         let parsed = scan_fmt!(input, "insert {} {} {}", i32, String, String);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::scan_fmt_help` which comes from the expansion of the macro `scan_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `database` (bin "database") due to 16 previous errors; 13 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "8c74a5e37cb0896f933a63495141f3170fd3f4019f42f34c546bbc71f7772cb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c74a5e37cb0896f933a63495141f3170fd3f4019f42f34c546bbc71f7772cb3", kill_on_drop: false }`
[INFO] [stdout] 8c74a5e37cb0896f933a63495141f3170fd3f4019f42f34c546bbc71f7772cb3
