[INFO] cloning repository https://github.com/dr-nat/whatsgud
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dr-nat/whatsgud" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdr-nat%2Fwhatsgud", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdr-nat%2Fwhatsgud'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c6cde8aa7388a03be47416cd4d63c90533b32cfa
[INFO] checking dr-nat/whatsgud against try#3f7e3b175fda7edbf81081bcd9b91b73f2f7993f for pr-156157-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdr-nat%2Fwhatsgud" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dr-nat/whatsgud
[INFO] finished tweaking git repo https://github.com/dr-nat/whatsgud
[INFO] tweaked toml for git repo https://github.com/dr-nat/whatsgud written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dr-nat/whatsgud on toolchain 3f7e3b175fda7edbf81081bcd9b91b73f2f7993f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dr-nat/whatsgud 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" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 139740c50e92ec412731e89d9fbe78579385efa851af7dab13aef288d5108a82
[INFO] running `Command { std: "docker" "start" "-a" "139740c50e92ec412731e89d9fbe78579385efa851af7dab13aef288d5108a82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "139740c50e92ec412731e89d9fbe78579385efa851af7dab13aef288d5108a82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "139740c50e92ec412731e89d9fbe78579385efa851af7dab13aef288d5108a82", kill_on_drop: false }`
[INFO] [stdout] 139740c50e92ec412731e89d9fbe78579385efa851af7dab13aef288d5108a82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef963f0e7c012234e724e7dd108a4835f23c75c610f0ad7db09e14f454354183
[INFO] running `Command { std: "docker" "start" "-a" "ef963f0e7c012234e724e7dd108a4835f23c75c610f0ad7db09e14f454354183", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.185
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]     Checking bytes v1.11.1
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking lock_api v0.4.14
[INFO] [stderr]     Checking pin-project-lite v0.2.17
[INFO] [stderr]     Checking cpufeatures v0.2.17
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking futures-core v0.3.32
[INFO] [stderr]     Checking itoa v1.0.18
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking const-oid v0.10.2
[INFO] [stderr]     Checking futures-task v0.3.32
[INFO] [stderr]     Checking http v1.4.0
[INFO] [stderr]     Checking hybrid-array v0.4.10
[INFO] [stderr]     Checking log v0.4.29
[INFO] [stderr]     Checking futures-sink v0.3.32
[INFO] [stderr]     Checking errno v0.3.14
[INFO] [stderr]     Checking rand_core v0.9.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.8
[INFO] [stderr]     Checking socket2 v0.6.3
[INFO] [stderr]     Checking mio v1.2.0
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking data-encoding v2.10.0
[INFO] [stderr]     Checking block-buffer v0.12.0
[INFO] [stderr]     Checking crypto-common v0.2.1
[INFO] [stderr]     Checking slab v0.4.12
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.7
[INFO] [stderr]     Checking iana-time-zone v0.1.65
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]     Checking cpufeatures v0.3.0
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking futures-channel v0.3.32
[INFO] [stderr]     Checking digest v0.11.2
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking sha2 v0.11.0
[INFO] [stderr]     Checking chrono v0.4.44
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling tokio-macros v2.7.0
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.4
[INFO] [stderr]     Checking tokio v1.52.1
[INFO] [stderr]     Checking tungstenite v0.29.0
[INFO] [stderr]     Checking tokio-tungstenite v0.29.0
[INFO] [stderr]     Checking whatsgud v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`, `SocketAddr`, `TcpStream`, `error::Error`, and `thread`
[INFO] [stdout]  --> src/server.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     sync::{Arc, Mutex},
[INFO] [stdout]   |            ^^^  ^^^^^
[INFO] [stdout] 3 |     thread,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 4 |     collections::HashMap,
[INFO] [stdout] 5 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 6 |     net::{SocketAddr, TcpStream},
[INFO] [stdout]   |           ^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `unbounded`
[INFO] [stdout]  --> src/server.rs:9:29
[INFO] [stdout]   |
[INFO] [stdout] 9 | use futures_channel::mpsc::{unbounded, UnboundedSender};
[INFO] [stdout]   |                             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`, `SocketAddr`, `TcpStream`, `error::Error`, and `thread`
[INFO] [stdout]  --> src/server.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     sync::{Arc, Mutex},
[INFO] [stdout]   |            ^^^  ^^^^^
[INFO] [stdout] 3 |     thread,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 4 |     collections::HashMap,
[INFO] [stdout] 5 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 6 |     net::{SocketAddr, TcpStream},
[INFO] [stdout]   |           ^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `unbounded`
[INFO] [stdout]  --> src/server.rs:9:29
[INFO] [stdout]   |
[INFO] [stdout] 9 | use futures_channel::mpsc::{unbounded, UnboundedSender};
[INFO] [stdout]   |                             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chat_room`
[INFO] [stdout]   --> src/server.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let chat_room: HashMap<String, Tx> = HashMap::new();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chat_room`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Tx` is never used
[INFO] [stdout]   --> src/server.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | type Tx = UnboundedSender<Message>;
[INFO] [stdout]    |      ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_connection` is never used
[INFO] [stdout]   --> src/server.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | async fn handle_connection() {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MsgFormat` is never constructed
[INFO] [stdout]  --> src/models.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct MsgFormat {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `get_uuid` are never used
[INFO] [stdout]   --> src/models.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl MsgFormat {
[INFO] [stdout]    | -------------- associated functions in this implementation
[INFO] [stdout] 10 |     fn new(username: String) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn get_uuid(username: &String) -> String{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chat_room`
[INFO] [stdout]   --> src/server.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let chat_room: HashMap<String, Tx> = HashMap::new();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_chat_room`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Tx` is never used
[INFO] [stdout]   --> src/server.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | type Tx = UnboundedSender<Message>;
[INFO] [stdout]    |      ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_connection` is never used
[INFO] [stdout]   --> src/server.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | async fn handle_connection() {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MsgFormat` is never constructed
[INFO] [stdout]  --> src/models.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct MsgFormat {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `get_uuid` are never used
[INFO] [stdout]   --> src/models.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl MsgFormat {
[INFO] [stdout]    | -------------- associated functions in this implementation
[INFO] [stdout] 10 |     fn new(username: String) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn get_uuid(username: &String) -> String{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.94s
[INFO] running `Command { std: "docker" "inspect" "ef963f0e7c012234e724e7dd108a4835f23c75c610f0ad7db09e14f454354183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef963f0e7c012234e724e7dd108a4835f23c75c610f0ad7db09e14f454354183", kill_on_drop: false }`
[INFO] [stdout] ef963f0e7c012234e724e7dd108a4835f23c75c610f0ad7db09e14f454354183
