[INFO] cloning repository https://github.com/ymgyt/kvs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ymgyt/kvs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fkvs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fkvs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 16b9bb6c2e507066ec280ea019fe7afb89031329
[INFO] checking ymgyt/kvs against try#ff044a3d65d25a17c3e14c1530004e1540179ba7 for pr-78338
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fkvs" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ymgyt/kvs on toolchain ff044a3d65d25a17c3e14c1530004e1540179ba7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ymgyt/kvs
[INFO] finished tweaking git repo https://github.com/ymgyt/kvs
[INFO] tweaked toml for git repo https://github.com/ymgyt/kvs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ymgyt/kvs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e864f22bd539aec1d2fc6e97040cdce8384da2627e6c781ec064239c499eba3
[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" "4e864f22bd539aec1d2fc6e97040cdce8384da2627e6c781ec064239c499eba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e864f22bd539aec1d2fc6e97040cdce8384da2627e6c781ec064239c499eba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e864f22bd539aec1d2fc6e97040cdce8384da2627e6c781ec064239c499eba3", kill_on_drop: false }`
[INFO] [stdout] 4e864f22bd539aec1d2fc6e97040cdce8384da2627e6c781ec064239c499eba3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8dd6bff1430aa72b59d016e480095a0de61ec62b6419aacdbd5c4de6d51b2052
[INFO] running `Command { std: "docker" "start" "-a" "8dd6bff1430aa72b59d016e480095a0de61ec62b6419aacdbd5c4de6d51b2052", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking pin-project-lite v0.1.11
[INFO] [stderr]     Checking futures-core v0.3.7
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
[INFO] [stderr]     Checking mio v0.7.4
[INFO] [stderr]     Checking tokio v0.3.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]     Checking tracing v0.1.21
[INFO] [stderr]     Checking kvs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/repository/store/table.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::protocol::command::Command`
[INFO] [stdout]  --> src/repository/repository.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::protocol::command::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/repository/store/table.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncReadExt`
[INFO] [stdout]  --> src/repository/store/table.rs:3:43
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::{AsyncWrite,AsyncWriteExt, AsyncReadExt};
[INFO] [stdout]   |                                           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/repository/store/table.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::sync::mpsc::{self, Receiver};
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Key`, `Set`
[INFO] [stdout]  --> src/repository/store/table.rs:6:32
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::protocol::command::{Set, Command, Key};
[INFO] [stdout]   |                                ^^^           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::protocol::command::Command`
[INFO] [stdout]  --> src/repository/repository.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::protocol::command::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Config`
[INFO] [stdout]  --> src/repository/config.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(in crate::repository) struct Config {}
[INFO] [stdout]   |                                  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Etc`
[INFO] [stdout]   --> src/repository/store/table.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Etc(Box<dyn std::error::Error + Send + 'static>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TableHandler`
[INFO] [stdout]   --> src/repository/store/table.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct TableHandler<W> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]   --> src/repository/store/table.rs:21:18
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub async fn run(mut self) {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/repository/store/table.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn new(writer: W, receiver: Receiver<Command>) -> Result<Self, TableError> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Repository`
[INFO] [stdout]  --> src/repository/repository.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Repository {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Dispatcher`
[INFO] [stdout]   --> src/repository/repository.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Dispatcher {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/repository/store/table.rs:53:30
[INFO] [stdout]    |
[INFO] [stdout] 53 |             let (mut reader, mut writer) = tokio::io::duplex(1024);
[INFO] [stdout]    |                              ----^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/repository/store/table.rs:54:18
[INFO] [stdout]    |
[INFO] [stdout] 54 |             let (mut tx, mut rx) = mpsc::channel(10);
[INFO] [stdout]    |                  ----^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/repository/store/table.rs:54:26
[INFO] [stdout]    |
[INFO] [stdout] 54 |             let (mut tx, mut rx) = mpsc::channel(10);
[INFO] [stdout]    |                          ----^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Config`
[INFO] [stdout]  --> src/repository/config.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(in crate::repository) struct Config {}
[INFO] [stdout]   |                                  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Etc`
[INFO] [stdout]   --> src/repository/store/table.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Etc(Box<dyn std::error::Error + Send + 'static>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Repository`
[INFO] [stdout]  --> src/repository/repository.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Repository {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Dispatcher`
[INFO] [stdout]   --> src/repository/repository.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Dispatcher {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.82s
[INFO] running `Command { std: "docker" "inspect" "8dd6bff1430aa72b59d016e480095a0de61ec62b6419aacdbd5c4de6d51b2052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dd6bff1430aa72b59d016e480095a0de61ec62b6419aacdbd5c4de6d51b2052", kill_on_drop: false }`
[INFO] [stdout] 8dd6bff1430aa72b59d016e480095a0de61ec62b6419aacdbd5c4de6d51b2052