[INFO] cloning repository https://github.com/NakadaTokumei/NakadaDB
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NakadaTokumei/NakadaDB" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNakadaTokumei%2FNakadaDB", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNakadaTokumei%2FNakadaDB'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 77bfb11f095442e8e9456d6de3712aa669b15455
[INFO] checking NakadaTokumei/NakadaDB/77bfb11f095442e8e9456d6de3712aa669b15455 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNakadaTokumei%2FNakadaDB" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NakadaTokumei/NakadaDB on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NakadaTokumei/NakadaDB
[INFO] finished tweaking git repo https://github.com/NakadaTokumei/NakadaDB
[INFO] tweaked toml for git repo https://github.com/NakadaTokumei/NakadaDB written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/NakadaTokumei/NakadaDB 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de7d78d11c443b0851eefff61b60d02d0c75bd494041a9d49eb1b8889b9b7ecc
[INFO] running `Command { std: "docker" "start" "-a" "de7d78d11c443b0851eefff61b60d02d0c75bd494041a9d49eb1b8889b9b7ecc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de7d78d11c443b0851eefff61b60d02d0c75bd494041a9d49eb1b8889b9b7ecc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de7d78d11c443b0851eefff61b60d02d0c75bd494041a9d49eb1b8889b9b7ecc", kill_on_drop: false }`
[INFO] [stdout] de7d78d11c443b0851eefff61b60d02d0c75bd494041a9d49eb1b8889b9b7ecc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f5482511ca6b82404459171a70e8e6f1acf16f7bc5c5c7e50aec5240e9c0831
[INFO] running `Command { std: "docker" "start" "-a" "9f5482511ca6b82404459171a70e8e6f1acf16f7bc5c5c7e50aec5240e9c0831", kill_on_drop: false }`
[INFO] [stderr]     Checking NakadaDB v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/nakada/server/DBServer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/nakada/server/DBServer.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut iter = self.server_thread.into_iter();
[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: unused variable: `server`
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let server = match Server::bind("127.0.0.1:5994") {
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_server`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `create_thread`, `start_all`, and `stop_all` are never used
[INFO] [stdout]  --> src/nakada/server/Thread.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait NakadaThread
[INFO] [stdout]   |           ------------ methods in this trait
[INFO] [stdout] 5 | {
[INFO] [stdout] 6 |     fn create_thread(&mut self, func : fn()) -> Result<(), Box<dyn Error>>;
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 7 |     fn start_all(self) -> thread::Result<()>;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 8 |     fn stop_all(&mut self) -> Result<(), Box<dyn Error>>;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `tcp_listener` and `server_thread` are never read
[INFO] [stdout]   --> src/nakada/server/DBServer.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Server
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 37 | {
[INFO] [stdout] 38 |     tcp_listener : TcpListener,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 39 |     server_thread : ServerThread
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Thread` should have a snake case name
[INFO] [stdout]  --> src/nakada/server/mod.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod Thread;
[INFO] [stdout]   |         ^^^^^^ help: convert the identifier to snake case: `thread`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `DBServer` should have a snake case name
[INFO] [stdout]  --> src/nakada/server/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub mod DBServer;
[INFO] [stdout]   |         ^^^^^^^^ help: convert the identifier to snake case: `dbserver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/nakada/server/DBServer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/nakada/server/DBServer.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut iter = self.server_thread.into_iter();
[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: unused variable: `server`
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let server = match Server::bind("127.0.0.1:5994") {
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_server`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `create_thread`, `start_all`, and `stop_all` are never used
[INFO] [stdout]  --> src/nakada/server/Thread.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait NakadaThread
[INFO] [stdout]   |           ------------ methods in this trait
[INFO] [stdout] 5 | {
[INFO] [stdout] 6 |     fn create_thread(&mut self, func : fn()) -> Result<(), Box<dyn Error>>;
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 7 |     fn start_all(self) -> thread::Result<()>;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 8 |     fn stop_all(&mut self) -> Result<(), Box<dyn Error>>;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `tcp_listener` and `server_thread` are never read
[INFO] [stdout]   --> src/nakada/server/DBServer.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Server
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 37 | {
[INFO] [stdout] 38 |     tcp_listener : TcpListener,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 39 |     server_thread : ServerThread
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Thread` should have a snake case name
[INFO] [stdout]  --> src/nakada/server/mod.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod Thread;
[INFO] [stdout]   |         ^^^^^^ help: convert the identifier to snake case: `thread`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `DBServer` should have a snake case name
[INFO] [stdout]  --> src/nakada/server/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub mod DBServer;
[INFO] [stdout]   |         ^^^^^^^^ help: convert the identifier to snake case: `dbserver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "9f5482511ca6b82404459171a70e8e6f1acf16f7bc5c5c7e50aec5240e9c0831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f5482511ca6b82404459171a70e8e6f1acf16f7bc5c5c7e50aec5240e9c0831", kill_on_drop: false }`
[INFO] [stdout] 9f5482511ca6b82404459171a70e8e6f1acf16f7bc5c5c7e50aec5240e9c0831