[INFO] cloning repository https://github.com/EstebanBorai/low-level-chat-solution
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EstebanBorai/low-level-chat-solution" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEstebanBorai%2Flow-level-chat-solution", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEstebanBorai%2Flow-level-chat-solution'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2366ea961b5b25b8f2804dee373718ea079d4e4d
[INFO] testing EstebanBorai/low-level-chat-solution against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEstebanBorai%2Flow-level-chat-solution" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EstebanBorai/low-level-chat-solution on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/EstebanBorai/low-level-chat-solution
[INFO] finished tweaking git repo https://github.com/EstebanBorai/low-level-chat-solution
[INFO] tweaked toml for git repo https://github.com/EstebanBorai/low-level-chat-solution written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/EstebanBorai/low-level-chat-solution already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e692941d2777e8a7e4a8c51b39ef3e32016a5a4737d0e3d618ca152c12d7616
[INFO] running `Command { std: "docker" "start" "-a" "1e692941d2777e8a7e4a8c51b39ef3e32016a5a4737d0e3d618ca152c12d7616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e692941d2777e8a7e4a8c51b39ef3e32016a5a4737d0e3d618ca152c12d7616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e692941d2777e8a7e4a8c51b39ef3e32016a5a4737d0e3d618ca152c12d7616", kill_on_drop: false }`
[INFO] [stdout] 1e692941d2777e8a7e4a8c51b39ef3e32016a5a4737d0e3d618ca152c12d7616
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc5bc1b4082b1ec7c90c4fd386420dcffc5224d81c98a08baab1279d92a97700
[INFO] running `Command { std: "docker" "start" "-a" "fc5bc1b4082b1ec7c90c4fd386420dcffc5224d81c98a08baab1279d92a97700", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling bytes v0.3.0
[INFO] [stderr]    Compiling slab v0.1.3
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling net2 v0.2.35
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling sha1 v0.1.1
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling miow v0.1.5
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling http-muncher v0.2.5
[INFO] [stderr]    Compiling mio v0.5.1
[INFO] [stderr]    Compiling low-level-websocket-solution v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/server.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 token => {
[INFO] [stdout]    |                 ----- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 72 |                 _ => println!("Received invalid token: {:?}", token),
[INFO] [stdout]    |                 ^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/server.rs:77:17
[INFO] [stdout]    |
[INFO] [stdout] 77 |             let mut client = self.clients.get_mut(&token).unwrap();
[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: function is never used: `gen_key`
[INFO] [stdout]  --> src/security.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn gen_key(key: &String) -> String {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.52s
[INFO] running `Command { std: "docker" "inspect" "fc5bc1b4082b1ec7c90c4fd386420dcffc5224d81c98a08baab1279d92a97700", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc5bc1b4082b1ec7c90c4fd386420dcffc5224d81c98a08baab1279d92a97700", kill_on_drop: false }`
[INFO] [stdout] fc5bc1b4082b1ec7c90c4fd386420dcffc5224d81c98a08baab1279d92a97700
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97aa93453cd84a6b9de852a75a82132085d1319a956bea559a95a49195479cf0
[INFO] running `Command { std: "docker" "start" "-a" "97aa93453cd84a6b9de852a75a82132085d1319a956bea559a95a49195479cf0", kill_on_drop: false }`
[INFO] [stderr]    Compiling low-level-websocket-solution v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/server.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 token => {
[INFO] [stdout]    |                 ----- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 72 |                 _ => println!("Received invalid token: {:?}", token),
[INFO] [stdout]    |                 ^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/server.rs:77:17
[INFO] [stdout]    |
[INFO] [stdout] 77 |             let mut client = self.clients.get_mut(&token).unwrap();
[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: function is never used: `gen_key`
[INFO] [stdout]  --> src/security.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn gen_key(key: &String) -> String {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "97aa93453cd84a6b9de852a75a82132085d1319a956bea559a95a49195479cf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97aa93453cd84a6b9de852a75a82132085d1319a956bea559a95a49195479cf0", kill_on_drop: false }`
[INFO] [stdout] 97aa93453cd84a6b9de852a75a82132085d1319a956bea559a95a49195479cf0
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 94593c1b19b524307649c52873fb227cfccd985d3a90baea424300720a1d5e91
[INFO] running `Command { std: "docker" "start" "-a" "94593c1b19b524307649c52873fb227cfccd985d3a90baea424300720a1d5e91", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/server.rs:72:17
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 58 |                 token => {
[INFO] [stdout] 
[INFO] [stderr]    |                 ----- matches any value
[INFO] [stderr] ...
[INFO] [stderr] 72 |                 _ => println!("Received invalid token: {:?}", token),
[INFO] [stderr]    |                 ^ unreachable pattern
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/server.rs:77:17
[INFO] [stderr]    |
[INFO] [stderr] 77 |             let mut client = self.clients.get_mut(&token).unwrap();
[INFO] [stderr]    |                 ----^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_key`
[INFO] [stderr]  --> src/security.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn gen_key(key: &String) -> String {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `low-level-websocket-solution` (bin "low-level-websocket-solution" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/low_level_websocket_solution-51d41938d363bdb1)
[INFO] running `Command { std: "docker" "inspect" "94593c1b19b524307649c52873fb227cfccd985d3a90baea424300720a1d5e91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94593c1b19b524307649c52873fb227cfccd985d3a90baea424300720a1d5e91", kill_on_drop: false }`
[INFO] [stdout] 94593c1b19b524307649c52873fb227cfccd985d3a90baea424300720a1d5e91