[INFO] cloning repository https://github.com/lukaaduashvili/database
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lukaaduashvili/database" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flukaaduashvili%2Fdatabase", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flukaaduashvili%2Fdatabase'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 584e90340a5bc106696cc7ef04a624640ee9acd1
[INFO] checking lukaaduashvili/database 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%2Flukaaduashvili%2Fdatabase" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/lukaaduashvili/database
[INFO] finished tweaking git repo https://github.com/lukaaduashvili/database
[INFO] tweaked toml for git repo https://github.com/lukaaduashvili/database written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lukaaduashvili/database 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/lukaaduashvili/database 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 36251465b4bced235fa0d0ea663eaa09892d73d865d3befcb709819d9563dcc0
[INFO] running `Command { std: "docker" "start" "-a" "36251465b4bced235fa0d0ea663eaa09892d73d865d3befcb709819d9563dcc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36251465b4bced235fa0d0ea663eaa09892d73d865d3befcb709819d9563dcc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36251465b4bced235fa0d0ea663eaa09892d73d865d3befcb709819d9563dcc0", kill_on_drop: false }`
[INFO] [stdout] 36251465b4bced235fa0d0ea663eaa09892d73d865d3befcb709819d9563dcc0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c8262f695204cb1c949e9d1fa33030315177d5204f0beefea2e56da7ffb73590
[INFO] running `Command { std: "docker" "start" "-a" "c8262f695204cb1c949e9d1fa33030315177d5204f0beefea2e56da7ffb73590", kill_on_drop: false }`
[INFO] [stderr]     Checking database v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `HEADER` is never used
[INFO] [stdout]  --> src/b_node.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const HEADER: u8 = 4;
[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 `BTREE_PAGE_SIZE` is never used
[INFO] [stdout]  --> src/b_node.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const BTREE_PAGE_SIZE: u16 = 4096;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BTREE_MAX_KEY_SIZE` is never used
[INFO] [stdout]  --> src/b_node.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const BTREE_MAX_KEY_SIZE: u16 = 1000;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BTREE_MAX_VAL_SIZE` is never used
[INFO] [stdout]  --> src/b_node.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const BTREE_MAX_VAL_SIZE: u16 = 3000;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Tree` is never used
[INFO] [stdout]  --> src/b_node.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | trait Tree {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BNodeType` is never used
[INFO] [stdout]   --> src/b_node.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum BNodeType {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_u16` is never used
[INFO] [stdout]   --> src/b_node.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl BNodeType {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 19 |     fn from_u16(n: u16) -> BNodeType {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BNode` is never constructed
[INFO] [stdout]   --> src/b_node.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct BNode {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/b_node.rs:43:8
[INFO] [stdout]     |
[INFO] [stdout]  41 | impl BNode {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout]  42 |     //Return the type of current node
[INFO] [stdout]  43 |     fn b_type(&self) -> BNodeType {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  48 |     fn n_keys(&self) -> u16 {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  52 |     fn set_header(&mut self, b_type: u16, n_keys: u16) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  69 |     fn get_ptr(&self, idx: u16) -> u64 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  83 |     fn set_ptr(&mut self, idx: u16, value: u64) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  94 |     fn offset_position(&self, idx: u16) -> u16 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |     fn get_offset(&self, idx: u16) -> u16 {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 120 |     fn set_offset(&mut self, idx: u16, value: u16) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |     fn get_kv_pair_position(&self, idx: u16) -> u16 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 138 |     fn get_key(&self, idx: u16) -> &[u8] {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |     fn get_value(&self, idx: u16) -> &[u8] {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 183 |     fn num_used_bytes(&self) -> u16 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BTree` is never constructed
[INFO] [stdout]    --> src/b_node.rs:189:12
[INFO] [stdout]     |
[INFO] [stdout] 189 | pub struct BTree {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/b_node.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 | /         self.data[(position + 4) as usize..(position + 4 + key_length) as usize]
[INFO] [stdout] 152 | |             .try_into()
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/b_node.rs:178:9
[INFO] [stdout]     |
[INFO] [stdout] 178 | /         self.data[position_of_value_data as usize..(position_of_value_data + value_length) as usize]
[INFO] [stdout] 179 | |             .try_into()
[INFO] [stdout]     | |_______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `HEADER` is never used
[INFO] [stdout]  --> src/b_node.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const HEADER: u8 = 4;
[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 `BTREE_PAGE_SIZE` is never used
[INFO] [stdout]  --> src/b_node.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const BTREE_PAGE_SIZE: u16 = 4096;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BTREE_MAX_KEY_SIZE` is never used
[INFO] [stdout]  --> src/b_node.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const BTREE_MAX_KEY_SIZE: u16 = 1000;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BTREE_MAX_VAL_SIZE` is never used
[INFO] [stdout]  --> src/b_node.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const BTREE_MAX_VAL_SIZE: u16 = 3000;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Tree` is never used
[INFO] [stdout]  --> src/b_node.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | trait Tree {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BNodeType` is never used
[INFO] [stdout]   --> src/b_node.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum BNodeType {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_u16` is never used
[INFO] [stdout]   --> src/b_node.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl BNodeType {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 19 |     fn from_u16(n: u16) -> BNodeType {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BNode` is never constructed
[INFO] [stdout]   --> src/b_node.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct BNode {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/b_node.rs:43:8
[INFO] [stdout]     |
[INFO] [stdout]  41 | impl BNode {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout]  42 |     //Return the type of current node
[INFO] [stdout]  43 |     fn b_type(&self) -> BNodeType {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  48 |     fn n_keys(&self) -> u16 {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  52 |     fn set_header(&mut self, b_type: u16, n_keys: u16) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  69 |     fn get_ptr(&self, idx: u16) -> u64 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  83 |     fn set_ptr(&mut self, idx: u16, value: u64) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  94 |     fn offset_position(&self, idx: u16) -> u16 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |     fn get_offset(&self, idx: u16) -> u16 {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 120 |     fn set_offset(&mut self, idx: u16, value: u16) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |     fn get_kv_pair_position(&self, idx: u16) -> u16 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 138 |     fn get_key(&self, idx: u16) -> &[u8] {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |     fn get_value(&self, idx: u16) -> &[u8] {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 183 |     fn num_used_bytes(&self) -> u16 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BTree` is never constructed
[INFO] [stdout]    --> src/b_node.rs:189:12
[INFO] [stdout]     |
[INFO] [stdout] 189 | pub struct BTree {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/b_node.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 | /         self.data[(position + 4) as usize..(position + 4 + key_length) as usize]
[INFO] [stdout] 152 | |             .try_into()
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/b_node.rs:178:9
[INFO] [stdout]     |
[INFO] [stdout] 178 | /         self.data[position_of_value_data as usize..(position_of_value_data + value_length) as usize]
[INFO] [stdout] 179 | |             .try_into()
[INFO] [stdout]     | |_______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `database` (bin "database" test) due to 2 previous errors; 10 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `database` (bin "database") due to 2 previous errors; 10 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "c8262f695204cb1c949e9d1fa33030315177d5204f0beefea2e56da7ffb73590", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8262f695204cb1c949e9d1fa33030315177d5204f0beefea2e56da7ffb73590", kill_on_drop: false }`
[INFO] [stdout] c8262f695204cb1c949e9d1fa33030315177d5204f0beefea2e56da7ffb73590
