[INFO] fetching crate samurai 0.1.5...
[INFO] testing samurai-0.1.5 against 1.47.0 for beta-1.48-1
[INFO] extracting crate samurai 0.1.5 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate samurai 0.1.5 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate samurai 0.1.5
[INFO] finished tweaking crates.io crate samurai 0.1.5
[INFO] tweaked toml for crates.io crate samurai 0.1.5 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate samurai 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 796c5a3d58f79df5d67c4732380c5d4a9a38cf68188fbba9134226ec942bae9c
[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" "796c5a3d58f79df5d67c4732380c5d4a9a38cf68188fbba9134226ec942bae9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "796c5a3d58f79df5d67c4732380c5d4a9a38cf68188fbba9134226ec942bae9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "796c5a3d58f79df5d67c4732380c5d4a9a38cf68188fbba9134226ec942bae9c", kill_on_drop: false }`
[INFO] [stdout] 796c5a3d58f79df5d67c4732380c5d4a9a38cf68188fbba9134226ec942bae9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a5abffeae7a6d972537ed8a5d7a3eaca497f3ef1627cca0365955e04295cd95
[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" "6a5abffeae7a6d972537ed8a5d7a3eaca497f3ef1627cca0365955e04295cd95", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling smallvec v1.2.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling regex-syntax v0.6.16
[INFO] [stderr]    Compiling static_assertions v0.3.4
[INFO] [stderr]    Compiling linked-hash-map v0.5.2
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling serde_test v0.8.23
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling get_if_addrs v0.5.3
[INFO] [stderr]    Compiling aho-corasick v0.7.9
[INFO] [stderr]    Compiling lexical-core v0.6.7
[INFO] [stderr]    Compiling xmltree v0.8.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling yaml-rust v0.4.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.12
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling serde-hjson v0.9.1
[INFO] [stderr]    Compiling attohttpc v0.4.5
[INFO] [stderr]    Compiling igd v0.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling serde_json v1.0.47
[INFO] [stderr]    Compiling config v0.10.1
[INFO] [stderr]    Compiling samurai v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::debug_send`
[INFO] [stdout]  --> src/server/handler.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::debug_send;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IpAddr`
[INFO] [stdout]  --> src/server/router_utils.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::net::{Ipv4Addr, IpAddr, SocketAddrV4};
[INFO] [stdout]   |                          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `get_if_addrs::Interface`
[INFO] [stdout]  --> src/server/router_utils.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use get_if_addrs::Interface;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Value`
[INFO] [stdout]  --> src/bootstrap/file.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde_json::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `Shutdown`
[INFO] [stdout]  --> src/debug.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::net::{IpAddr, TcpStream, SocketAddrV4, Shutdown, Ipv4Addr};
[INFO] [stdout]   |                ^^^^^^                           ^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]   --> src/server/passive.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut rng = rand::thread_rng();
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/server/passive.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut rng = rand::thread_rng();
[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 `std::result::Result` that must be used
[INFO] [stdout]   --> src/debug.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     con.write_all(msg.as_bytes());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `SocketAddrV4`, `SocketAddr`
[INFO] [stdout]  --> src/samurai_node.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::{TcpStream, SocketAddrV4, Ipv4Addr, SocketAddr, IpAddr};
[INFO] [stdout]   |                           ^^^^^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]  --> src/samurai_node.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::process::exit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `samurai::node::Node`
[INFO] [stdout]  --> src/samurai_node.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use samurai::node::Node;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `samurai::id::Id`
[INFO] [stdout]  --> src/samurai_node.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use samurai::id::Id;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 29s
[INFO] running `Command { std: "docker" "inspect" "6a5abffeae7a6d972537ed8a5d7a3eaca497f3ef1627cca0365955e04295cd95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a5abffeae7a6d972537ed8a5d7a3eaca497f3ef1627cca0365955e04295cd95", kill_on_drop: false }`
[INFO] [stdout] 6a5abffeae7a6d972537ed8a5d7a3eaca497f3ef1627cca0365955e04295cd95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1e90cd235b2c3d2ad51f278e6e89ebc48a61a26b5da30b9d418355bfb6b4696
[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" "e1e90cd235b2c3d2ad51f278e6e89ebc48a61a26b5da30b9d418355bfb6b4696", kill_on_drop: false }`
[INFO] [stderr]    Compiling samurai v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::debug_send`
[INFO] [stdout]  --> src/server/handler.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::debug_send;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IpAddr`
[INFO] [stdout]  --> src/server/router_utils.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::net::{Ipv4Addr, IpAddr, SocketAddrV4};
[INFO] [stdout]   |                          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `get_if_addrs::Interface`
[INFO] [stdout]  --> src/server/router_utils.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use get_if_addrs::Interface;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Value`
[INFO] [stdout]  --> src/bootstrap/file.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde_json::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `Shutdown`
[INFO] [stdout]  --> src/debug.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::net::{IpAddr, TcpStream, SocketAddrV4, Shutdown, Ipv4Addr};
[INFO] [stdout]   |                ^^^^^^                           ^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]   --> src/server/passive.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut rng = rand::thread_rng();
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/server/passive.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut rng = rand::thread_rng();
[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 `std::result::Result` that must be used
[INFO] [stdout]   --> src/debug.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     con.write_all(msg.as_bytes());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `SocketAddrV4`, `SocketAddr`
[INFO] [stdout]  --> src/samurai_node.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::{TcpStream, SocketAddrV4, Ipv4Addr, SocketAddr, IpAddr};
[INFO] [stdout]   |                           ^^^^^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]  --> src/samurai_node.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::process::exit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `samurai::node::Node`
[INFO] [stdout]  --> src/samurai_node.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use samurai::node::Node;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `samurai::id::Id`
[INFO] [stdout]  --> src/samurai_node.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use samurai::id::Id;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `SocketAddrV4`, `SocketAddr`
[INFO] [stdout]  --> src/samurai_node.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::{TcpStream, SocketAddrV4, Ipv4Addr, SocketAddr, IpAddr};
[INFO] [stdout]   |                           ^^^^^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 0 arguments were supplied
[INFO] [stdout]   --> tests/bootstrapping_tests.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let server = Server::new();
[INFO] [stdout]    |                  ^^^^^^^^^^^-- supplied 0 arguments
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  expected 1 argument
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]  --> src/samurai_node.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::process::exit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `samurai::node::Node`
[INFO] [stdout]  --> src/samurai_node.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use samurai::node::Node;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `samurai::id::Id`
[INFO] [stdout]  --> src/samurai_node.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use samurai::id::Id;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `samurai`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `crate::debug_send`
[INFO] [stdout]  --> src/server/handler.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::debug_send;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IpAddr`
[INFO] [stdout]  --> src/server/router_utils.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::net::{Ipv4Addr, IpAddr, SocketAddrV4};
[INFO] [stdout]   |                          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `get_if_addrs::Interface`
[INFO] [stdout]  --> src/server/router_utils.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use get_if_addrs::Interface;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Value`
[INFO] [stdout]  --> src/bootstrap/file.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde_json::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `Shutdown`
[INFO] [stdout]  --> src/debug.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::net::{IpAddr, TcpStream, SocketAddrV4, Shutdown, Ipv4Addr};
[INFO] [stdout]   |                ^^^^^^                           ^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]   --> src/server/passive.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut rng = rand::thread_rng();
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/server/passive.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut rng = rand::thread_rng();
[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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/debug.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     con.write_all(msg.as_bytes());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e1e90cd235b2c3d2ad51f278e6e89ebc48a61a26b5da30b9d418355bfb6b4696", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1e90cd235b2c3d2ad51f278e6e89ebc48a61a26b5da30b9d418355bfb6b4696", kill_on_drop: false }`
[INFO] [stdout] e1e90cd235b2c3d2ad51f278e6e89ebc48a61a26b5da30b9d418355bfb6b4696
