[INFO] updating cached repository https://github.com/tonis2/small-rust-database
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 03b203bd21df57cfdb6fb96b150741f3a16d27f8
[INFO] checking tonis2/small-rust-database against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftonis2%2Fsmall-rust-database" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tonis2/small-rust-database on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tonis2/small-rust-database
[INFO] finished tweaking git repo https://github.com/tonis2/small-rust-database
[INFO] tweaked toml for git repo https://github.com/tonis2/small-rust-database written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/tonis2/small-rust-database already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 108a85cb192742d8901b7428f47f967bdba447e0103e74556209aa73874a0388
[INFO] running `"docker" "start" "-a" "108a85cb192742d8901b7428f47f967bdba447e0103e74556209aa73874a0388"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking libc v0.2.41
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]     Checking byteorder v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking itoa v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.9
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking serde_json v1.0.24
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling quote v0.6.4
[INFO] [stderr]    Compiling syn v0.14.6
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking bytes v0.4.8
[INFO] [stderr]     Checking http v0.1.5
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking bincode v0.6.1
[INFO] [stderr]     Checking simple-server v0.3.0
[INFO] [stderr]     Checking btree v0.1.0 (https://github.com/tonis2/btree#b7ac51db)
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]     Checking small-rust-database v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/main.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `basic_server` should have an upper camel case name
[INFO] [stderr]  --> src/server.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct basic_server;
[INFO] [stderr]   |            ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `BasicServer`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/main.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `basic_server` should have an upper camel case name
[INFO] [stderr]  --> src/server.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct basic_server;
[INFO] [stderr]   |            ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `BasicServer`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `host`
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let host = "127.0.0.1".to_string();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_host`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `port`
[INFO] [stderr]   --> src/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let port = "7878".to_string();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_port`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `entry`
[INFO] [stderr]   --> src/database/mod.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn command_exec(entry: CommandEntry) {
[INFO] [stderr]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]  --> src/database/database.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn open(path: &String) -> System {
[INFO] [stderr]   |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `host`
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let host = "127.0.0.1".to_string();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_host`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `port`
[INFO] [stderr]   --> src/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let port = "7878".to_string();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_port`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `entry`
[INFO] [stderr]   --> src/database/mod.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn command_exec(entry: CommandEntry) {
[INFO] [stderr]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]  --> src/database/database.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn open(path: &String) -> System {
[INFO] [stderr]   |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `System`
[INFO] [stderr]  --> src/database/database.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct System {
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `open`
[INFO] [stderr]  --> src/database/database.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn open(path: &String) -> System {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/database/database.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn add(mut self, _value: &str) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `basic_server`
[INFO] [stderr]  --> src/server.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct basic_server;
[INFO] [stderr]   |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `listen`
[INFO] [stderr]  --> src/server.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub fn listen(host: String, port: String) {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `System`
[INFO] [stderr]  --> src/database/database.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct System {
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `open`
[INFO] [stderr]  --> src/database/database.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn open(path: &String) -> System {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/database/database.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn add(mut self, _value: &str) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `basic_server`
[INFO] [stderr]  --> src/server.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct basic_server;
[INFO] [stderr]   |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `listen`
[INFO] [stderr]  --> src/server.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub fn listen(host: String, port: String) {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.99s
[INFO] running `"docker" "inspect" "108a85cb192742d8901b7428f47f967bdba447e0103e74556209aa73874a0388"`
[INFO] running `"docker" "rm" "-f" "108a85cb192742d8901b7428f47f967bdba447e0103e74556209aa73874a0388"`
[INFO] [stdout] 108a85cb192742d8901b7428f47f967bdba447e0103e74556209aa73874a0388