[INFO] cloning repository https://github.com/TimWillebrands/rust-byo-database
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TimWillebrands/rust-byo-database" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimWillebrands%2Frust-byo-database", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimWillebrands%2Frust-byo-database'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4bc1c5dfdeba22587d79436a2e131de185effa0a
[INFO] checking TimWillebrands/rust-byo-database against master#507271bc119683008ec719ecee48814e8ac86c65 for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimWillebrands%2Frust-byo-database" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TimWillebrands/rust-byo-database
[INFO] finished tweaking git repo https://github.com/TimWillebrands/rust-byo-database
[INFO] tweaked toml for git repo https://github.com/TimWillebrands/rust-byo-database written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TimWillebrands/rust-byo-database on toolchain 507271bc119683008ec719ecee48814e8ac86c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TimWillebrands/rust-byo-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" "+507271bc119683008ec719ecee48814e8ac86c65" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ea497e6b97aa2901e018983723b79c736fb522d25d9280bd8bf043824636f8b
[INFO] running `Command { std: "docker" "start" "-a" "9ea497e6b97aa2901e018983723b79c736fb522d25d9280bd8bf043824636f8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ea497e6b97aa2901e018983723b79c736fb522d25d9280bd8bf043824636f8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ea497e6b97aa2901e018983723b79c736fb522d25d9280bd8bf043824636f8b", kill_on_drop: false }`
[INFO] [stdout] 9ea497e6b97aa2901e018983723b79c736fb522d25d9280bd8bf043824636f8b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b5c95941db84a153c322e9ce6fbb1e6068302a8fd7f1ee37d6b24821cf64099
[INFO] running `Command { std: "docker" "start" "-a" "9b5c95941db84a153c322e9ce6fbb1e6068302a8fd7f1ee37d6b24821cf64099", kill_on_drop: false }`
[INFO] [stderr]     Checking byodb-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/db.rs:560:13
[INFO] [stdout]     |
[INFO] [stdout] 560 |         let mut new = BNode {
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> src/db.rs:554:9
[INFO] [stdout]     |
[INFO] [stdout] 554 |         node: &BNode,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]    --> src/db.rs:555:9
[INFO] [stdout]     |
[INFO] [stdout] 555 |         idx: u16,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/db.rs:556:9
[INFO] [stdout]     |
[INFO] [stdout] 556 |         key: &[u8],
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/db.rs:557:9
[INFO] [stdout]     |
[INFO] [stdout] 557 |         val: &[u8],
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BTREE_MAX_KEY_SIZE` is never used
[INFO] [stdout]  --> src/db.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const BTREE_MAX_KEY_SIZE: u32 = 1000;
[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_MAX_VAL_SIZE` is never used
[INFO] [stdout]  --> src/db.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const BTREE_MAX_VAL_SIZE: u32 = 3000;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/db.rs:560:13
[INFO] [stdout]     |
[INFO] [stdout] 560 |         let mut new = BNode {
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> src/db.rs:554:9
[INFO] [stdout]     |
[INFO] [stdout] 554 |         node: &BNode,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]    --> src/db.rs:555:9
[INFO] [stdout]     |
[INFO] [stdout] 555 |         idx: u16,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/db.rs:556:9
[INFO] [stdout]     |
[INFO] [stdout] 556 |         key: &[u8],
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/db.rs:557:9
[INFO] [stdout]     |
[INFO] [stdout] 557 |         val: &[u8],
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `root` is never read
[INFO] [stdout]    --> src/db.rs:526:5
[INFO] [stdout]     |
[INFO] [stdout] 524 | pub struct BTree {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 525 |     // pointer (a nonzero page number)
[INFO] [stdout] 526 |     root: u64,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `root` is never read
[INFO] [stdout]    --> src/db.rs:526:5
[INFO] [stdout]     |
[INFO] [stdout] 524 | pub struct BTree {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 525 |     // pointer (a nonzero page number)
[INFO] [stdout] 526 |     root: u64,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "9b5c95941db84a153c322e9ce6fbb1e6068302a8fd7f1ee37d6b24821cf64099", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b5c95941db84a153c322e9ce6fbb1e6068302a8fd7f1ee37d6b24821cf64099", kill_on_drop: false }`
[INFO] [stdout] 9b5c95941db84a153c322e9ce6fbb1e6068302a8fd7f1ee37d6b24821cf64099
