[INFO] cloning repository https://github.com/de-sh/db-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/de-sh/db-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fde-sh%2Fdb-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fde-sh%2Fdb-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb666bbdcde220bcef739782d2a7713e57df592b
[INFO] checking de-sh/db-rs against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fde-sh%2Fdb-rs" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/de-sh/db-rs on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/de-sh/db-rs
[INFO] finished tweaking git repo https://github.com/de-sh/db-rs
[INFO] tweaked toml for git repo https://github.com/de-sh/db-rs written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/de-sh/db-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa7ec7269a8ac05c7ac03c4f14d466f4726c3cc768dbe5743a0809ce50e50665
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "aa7ec7269a8ac05c7ac03c4f14d466f4726c3cc768dbe5743a0809ce50e50665", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa7ec7269a8ac05c7ac03c4f14d466f4726c3cc768dbe5743a0809ce50e50665", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa7ec7269a8ac05c7ac03c4f14d466f4726c3cc768dbe5743a0809ce50e50665", kill_on_drop: false }`
[INFO] [stdout] aa7ec7269a8ac05c7ac03c4f14d466f4726c3cc768dbe5743a0809ce50e50665
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49eb8f0f624b60bc454328f2900d9d14a353fd87e3d91bf97bc626ac700faa23
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "49eb8f0f624b60bc454328f2900d9d14a353fd87e3d91bf97bc626ac700faa23", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking smallvec v1.5.1
[INFO] [stderr]     Checking bytes v0.6.0
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]     Checking pin-project-lite v0.2.0
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling tokio v0.3.5
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking parking_lot_core v0.8.1
[INFO] [stderr]     Checking mio v0.7.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling tokio-macros v0.3.1
[INFO] [stderr]     Checking db-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::config::Config`
[INFO] [stdout]  --> src/store.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::config::Config;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LSMTError`, `LSMT`
[INFO] [stdout]  --> src/store.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lsmt::{LSMTError, LSMT};
[INFO] [stdout]   |                   ^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::config::Config`
[INFO] [stdout]  --> src/store.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::config::Config;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LSMTError`, `LSMT`
[INFO] [stdout]  --> src/store.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lsmt::{LSMTError, LSMT};
[INFO] [stdout]   |                   ^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sock`
[INFO] [stdout]  --> src/server.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let (sock, _) = listener.accept().await.unwrap();
[INFO] [stdout]   |              ^^^^ help: if this is intentional, prefix it with an underscore: `_sock`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lsmt.rs:10:25
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn write(&self, key: Vec<&u8>, value: Vec<&u8>) -> Result<(), LSMTError> {
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/lsmt.rs:10:40
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn write(&self, key: Vec<&u8>, value: Vec<&u8>) -> Result<(), LSMTError> {
[INFO] [stdout]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lsmt.rs:15:23
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn get(&self, key: Vec<&u8>) -> Option<Vec<&u8>> {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sock`
[INFO] [stdout]  --> src/server.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let (sock, _) = listener.accept().await.unwrap();
[INFO] [stdout]   |              ^^^^ help: if this is intentional, prefix it with an underscore: `_sock`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lsmt.rs:10:25
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn write(&self, key: Vec<&u8>, value: Vec<&u8>) -> Result<(), LSMTError> {
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/lsmt.rs:10:40
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn write(&self, key: Vec<&u8>, value: Vec<&u8>) -> Result<(), LSMTError> {
[INFO] [stdout]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lsmt.rs:15:23
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn get(&self, key: Vec<&u8>) -> Option<Vec<&u8>> {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.75s
[INFO] running `Command { std: "docker" "inspect" "49eb8f0f624b60bc454328f2900d9d14a353fd87e3d91bf97bc626ac700faa23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49eb8f0f624b60bc454328f2900d9d14a353fd87e3d91bf97bc626ac700faa23", kill_on_drop: false }`
[INFO] [stdout] 49eb8f0f624b60bc454328f2900d9d14a353fd87e3d91bf97bc626ac700faa23