[INFO] cloning repository https://github.com/Bnowako/storage_engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Bnowako/storage_engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBnowako%2Fstorage_engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBnowako%2Fstorage_engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 99a9f040c98c9c8afcea6d34aa244c4cb51f56a3
[INFO] checking Bnowako/storage_engine/99a9f040c98c9c8afcea6d34aa244c4cb51f56a3 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBnowako%2Fstorage_engine" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Bnowako/storage_engine on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Bnowako/storage_engine
[INFO] finished tweaking git repo https://github.com/Bnowako/storage_engine
[INFO] tweaked toml for git repo https://github.com/Bnowako/storage_engine written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Bnowako/storage_engine 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3dc8d0359f7f29c3504eb136e45aec7a239aefe9303b9c43b8287326ad7ff9c4
[INFO] running `Command { std: "docker" "start" "-a" "3dc8d0359f7f29c3504eb136e45aec7a239aefe9303b9c43b8287326ad7ff9c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3dc8d0359f7f29c3504eb136e45aec7a239aefe9303b9c43b8287326ad7ff9c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dc8d0359f7f29c3504eb136e45aec7a239aefe9303b9c43b8287326ad7ff9c4", kill_on_drop: false }`
[INFO] [stdout] 3dc8d0359f7f29c3504eb136e45aec7a239aefe9303b9c43b8287326ad7ff9c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 951e636cf8b13857f88fa1844315367054bd48b24b7032a567c0452abc8cc241
[INFO] running `Command { std: "docker" "start" "-a" "951e636cf8b13857f88fa1844315367054bd48b24b7032a567c0452abc8cc241", kill_on_drop: false }`
[INFO] [stderr]     Checking storage_engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `MemTable`
[INFO] [stdout]  --> src/main.rs:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::mem_table::mem_table::{MemTable, new};
[INFO] [stdout]   |                                   ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Pair` and `new`
[INFO] [stdout]   --> src/mem_table.rs:34:35
[INFO] [stdout]    |
[INFO] [stdout] 34 | use crate::mem_table::mem_table::{new, Pair};
[INFO] [stdout]    |                                   ^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MemTable`
[INFO] [stdout]  --> src/main.rs:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::mem_table::mem_table::{MemTable, new};
[INFO] [stdout]   |                                   ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]   --> src/mem_table.rs:21:20
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 Ok(pos) => {}
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]   --> src/mem_table.rs:28:21
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 Err(pos) => { None }
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let a = new();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `values` is never read
[INFO] [stdout]  --> src/mem_table.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub struct MemTable {
[INFO] [stdout]   |                -------- field in this struct
[INFO] [stdout] 3 |         pub values: Vec<Pair>,
[INFO] [stdout]   |             ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `value` are never read
[INFO] [stdout]   --> src/mem_table.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub struct Pair {
[INFO] [stdout]    |                ---- fields in this struct
[INFO] [stdout] 13 |         pub(crate) key: String,
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 14 |         pub(crate) value: Vec<u8>,
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add` and `get` are never used
[INFO] [stdout]   --> src/mem_table.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 18 |     impl MemTable {
[INFO] [stdout]    |     ------------- methods in this implementation
[INFO] [stdout] 19 |         pub fn add(&mut self, pair: Pair) {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |         pub fn get(&self, key: String) -> Option<&Pair> {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]   --> src/mem_table.rs:21:20
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 Ok(pos) => {}
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]   --> src/mem_table.rs:28:21
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 Err(pos) => { None }
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let a = new();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/mem_table.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub struct Pair {
[INFO] [stdout]    |                ---- field in this struct
[INFO] [stdout] 13 |         pub(crate) key: String,
[INFO] [stdout] 14 |         pub(crate) value: Vec<u8>,
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "951e636cf8b13857f88fa1844315367054bd48b24b7032a567c0452abc8cc241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "951e636cf8b13857f88fa1844315367054bd48b24b7032a567c0452abc8cc241", kill_on_drop: false }`
[INFO] [stdout] 951e636cf8b13857f88fa1844315367054bd48b24b7032a567c0452abc8cc241