[INFO] cloning repository https://github.com/duanjp8617/demo-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/duanjp8617/demo-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduanjp8617%2Fdemo-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduanjp8617%2Fdemo-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 46225947d8229884f41b791b7b5b3a97d097ec91
[INFO] checking duanjp8617/demo-server against master#f90b06d7fb00470177516c5881bcec0432cb4f24 for pr-94063
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduanjp8617%2Fdemo-server" "/workspace/builds/worker-57/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-57/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/duanjp8617/demo-server on toolchain f90b06d7fb00470177516c5881bcec0432cb4f24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f90b06d7fb00470177516c5881bcec0432cb4f24" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/duanjp8617/demo-server
[INFO] finished tweaking git repo https://github.com/duanjp8617/demo-server
[INFO] tweaked toml for git repo https://github.com/duanjp8617/demo-server written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] crate git repo https://github.com/duanjp8617/demo-server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f90b06d7fb00470177516c5881bcec0432cb4f24" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stdout] e789909b7ba0f6ed3bdbc35d4274e91d91dfbdd911253760c0e0b9a66870ac97
[INFO] running `Command { std: "docker" "start" "-a" "e789909b7ba0f6ed3bdbc35d4274e91d91dfbdd911253760c0e0b9a66870ac97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e789909b7ba0f6ed3bdbc35d4274e91d91dfbdd911253760c0e0b9a66870ac97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e789909b7ba0f6ed3bdbc35d4274e91d91dfbdd911253760c0e0b9a66870ac97", kill_on_drop: false }`
[INFO] [stdout] e789909b7ba0f6ed3bdbc35d4274e91d91dfbdd911253760c0e0b9a66870ac97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+f90b06d7fb00470177516c5881bcec0432cb4f24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9aab9a6124e122db5c66fddb5aeee03ebf63b73db39b8e840a2ae85026c96dd
[INFO] running `Command { std: "docker" "start" "-a" "b9aab9a6124e122db5c66fddb5aeee03ebf63b73db39b8e840a2ae85026c96dd", kill_on_drop: false }`
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[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/app2.rs:241:5
[INFO] [stdout]     |
[INFO] [stdout] 239 |     loop{}
[INFO] [stdout]     |     ------ any code following this expression is unreachable
[INFO] [stdout] 240 | 
[INFO] [stdout] 241 |     Ok(())
[INFO] [stdout]     |     ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/app2.rs:241:5
[INFO] [stdout]     |
[INFO] [stdout] 239 |     loop{}
[INFO] [stdout]     |     ------ any code following this expression is unreachable
[INFO] [stdout] 240 | 
[INFO] [stdout] 241 |     Ok(())
[INFO] [stdout]     |     ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LINK1_LOG`
[INFO] [stdout]  --> src/app2.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const LINK1_LOG: &str = "/home/djp01/iperf-script/link1.log";
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LINK2_LOG`
[INFO] [stdout]   --> src/app2.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const LINK2_LOG: &str = "/home/djp01/iperf-script/link2.log";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LINK3_LOG`
[INFO] [stdout]   --> src/app2.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const LINK3_LOG: &str = "/home/djp01/iperf-script/link3.log";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LINK4_LOG`
[INFO] [stdout]   --> src/app2.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const LINK4_LOG: &str = "/home/djp01/iperf-script/link4.log";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SERVER_ADDR`
[INFO] [stdout]   --> src/app2.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | const SERVER_ADDR: &str = "192.168.50.106:566";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `bits_per_second`
[INFO] [stdout]   --> src/app2.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     bits_per_second: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `IperfStat` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/app2.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]    |          ^^^^^        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pkts_received`
[INFO] [stdout]   --> src/app2.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pkts_received: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `IperfStat` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/app2.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]    |          ^^^^^        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pkts_dropped`
[INFO] [stdout]   --> src/app2.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pkts_dropped: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `IperfStat` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/app2.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]    |          ^^^^^        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `drop_rate`
[INFO] [stdout]   --> src/app2.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     drop_rate: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `IperfStat` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/app2.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]    |          ^^^^^        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_str`
[INFO] [stdout]   --> src/app2.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn from_str(line: &str) -> Option<IperfStat> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_stats`
[INFO] [stdout]    --> src/app2.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | pub fn read_stats(file_string: &str, last_line_idx: usize, prev_stat: IperfStat) -> Option<(IperfStat, usize)> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `keep_reading`
[INFO] [stdout]    --> src/app2.rs:134:10
[INFO] [stdout]     |
[INFO] [stdout] 134 | async fn keep_reading(shared_stat: Arc<Mutex<IperfStat>>, log_file_name: &str) {
[INFO] [stdout]     |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `warp_handle`
[INFO] [stdout]    --> src/app2.rs:153:10
[INFO] [stdout]     |
[INFO] [stdout] 153 | async fn warp_handle(
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]    --> src/app2.rs:202:14
[INFO] [stdout]     |
[INFO] [stdout] 202 | pub async fn run() -> Result<(), Box<dyn StdError>> {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LINK1_LOG`
[INFO] [stdout]  --> src/app2.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const LINK1_LOG: &str = "/home/djp01/iperf-script/link1.log";
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LINK2_LOG`
[INFO] [stdout]   --> src/app2.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const LINK2_LOG: &str = "/home/djp01/iperf-script/link2.log";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LINK3_LOG`
[INFO] [stdout]   --> src/app2.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const LINK3_LOG: &str = "/home/djp01/iperf-script/link3.log";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LINK4_LOG`
[INFO] [stdout]   --> src/app2.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const LINK4_LOG: &str = "/home/djp01/iperf-script/link4.log";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SERVER_ADDR`
[INFO] [stdout]   --> src/app2.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | const SERVER_ADDR: &str = "192.168.50.106:566";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `bits_per_second`
[INFO] [stdout]   --> src/app2.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     bits_per_second: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `IperfStat` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/app2.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]    |          ^^^^^        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pkts_received`
[INFO] [stdout]   --> src/app2.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pkts_received: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `IperfStat` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/app2.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]    |          ^^^^^        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pkts_dropped`
[INFO] [stdout]   --> src/app2.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pkts_dropped: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `IperfStat` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/app2.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]    |          ^^^^^        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `drop_rate`
[INFO] [stdout]   --> src/app2.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     drop_rate: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `IperfStat` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/app2.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]    |          ^^^^^        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_str`
[INFO] [stdout]   --> src/app2.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn from_str(line: &str) -> Option<IperfStat> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_stats`
[INFO] [stdout]    --> src/app2.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | pub fn read_stats(file_string: &str, last_line_idx: usize, prev_stat: IperfStat) -> Option<(IperfStat, usize)> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `keep_reading`
[INFO] [stdout]    --> src/app2.rs:134:10
[INFO] [stdout]     |
[INFO] [stdout] 134 | async fn keep_reading(shared_stat: Arc<Mutex<IperfStat>>, log_file_name: &str) {
[INFO] [stdout]     |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `warp_handle`
[INFO] [stdout]    --> src/app2.rs:153:10
[INFO] [stdout]     |
[INFO] [stdout] 153 | async fn warp_handle(
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]    --> src/app2.rs:202:14
[INFO] [stdout]     |
[INFO] [stdout] 202 | pub async fn run() -> Result<(), Box<dyn StdError>> {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 04s
[INFO] running `Command { std: "docker" "inspect" "b9aab9a6124e122db5c66fddb5aeee03ebf63b73db39b8e840a2ae85026c96dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9aab9a6124e122db5c66fddb5aeee03ebf63b73db39b8e840a2ae85026c96dd", kill_on_drop: false }`
[INFO] [stdout] b9aab9a6124e122db5c66fddb5aeee03ebf63b73db39b8e840a2ae85026c96dd