[INFO] cloning repository https://github.com/kilroyjones/websocket-server-tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kilroyjones/websocket-server-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkilroyjones%2Fwebsocket-server-tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkilroyjones%2Fwebsocket-server-tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6266f0d4c605a6b0fc6e317d4ed5769ba7e3f3f6
[INFO] testing kilroyjones/websocket-server-tutorial against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkilroyjones%2Fwebsocket-server-tutorial" "/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/kilroyjones/websocket-server-tutorial
[INFO] finished tweaking git repo https://github.com/kilroyjones/websocket-server-tutorial
[INFO] tweaked toml for git repo https://github.com/kilroyjones/websocket-server-tutorial written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kilroyjones/websocket-server-tutorial on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kilroyjones/websocket-server-tutorial 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" "+beta-2026-04-21" "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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51722da3936a121089ae59997ea44ebd62c7aaa910e973cc33ea5e411e6fa194
[INFO] running `Command { std: "docker" "start" "-a" "51722da3936a121089ae59997ea44ebd62c7aaa910e973cc33ea5e411e6fa194", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51722da3936a121089ae59997ea44ebd62c7aaa910e973cc33ea5e411e6fa194", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51722da3936a121089ae59997ea44ebd62c7aaa910e973cc33ea5e411e6fa194", kill_on_drop: false }`
[INFO] [stdout] 51722da3936a121089ae59997ea44ebd62c7aaa910e973cc33ea5e411e6fa194
[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=warn" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43435efa5e5448f2982406f2506892cc0fcd2a23a1e28e17c23b743f6bb97c64
[INFO] running `Command { std: "docker" "start" "-a" "43435efa5e5448f2982406f2506892cc0fcd2a23a1e28e17c23b743f6bb97c64", kill_on_drop: false }`
[INFO] [stderr]    Compiling websocket_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `a` is never read
[INFO] [stdout]   --> src/sha1.rs:21:14
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |              ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 31 |             a = h0;
[INFO] [stdout]    |             ------ `a` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]   --> src/sha1.rs:21:21
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                     ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 32 |             b = h1;
[INFO] [stdout]    |             ------ `b` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]   --> src/sha1.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                            ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 33 |             c = h2;
[INFO] [stdout]    |             ------ `c` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `d` is never read
[INFO] [stdout]   --> src/sha1.rs:21:35
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                                   ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 34 |             d = h3;
[INFO] [stdout]    |             ------ `d` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `e` is never read
[INFO] [stdout]   --> src/sha1.rs:21:42
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                                          ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 35 |             e = h4;
[INFO] [stdout]    |             ------ `e` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fin`
[INFO] [stdout]    --> src/main.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let fin = (first_byte & 0x80) != 0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_fin`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidCharacter` is never constructed
[INFO] [stdout]   --> src/base64.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub enum Base64Error {
[INFO] [stdout]    |          ----------- variant in this enum
[INFO] [stdout] 10 |     InvalidCharacter,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Base64Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `decode` is never used
[INFO] [stdout]   --> src/base64.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Base64 {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn decode(&mut self, input: &str) -> Result<String, Base64Error> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "43435efa5e5448f2982406f2506892cc0fcd2a23a1e28e17c23b743f6bb97c64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43435efa5e5448f2982406f2506892cc0fcd2a23a1e28e17c23b743f6bb97c64", kill_on_drop: false }`
[INFO] [stdout] 43435efa5e5448f2982406f2506892cc0fcd2a23a1e28e17c23b743f6bb97c64
[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=warn" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eea8fd5e5a7702d52744485a5e737b726ed9b6a73beef6bb577be95e08960ea9
[INFO] running `Command { std: "docker" "start" "-a" "eea8fd5e5a7702d52744485a5e737b726ed9b6a73beef6bb577be95e08960ea9", kill_on_drop: false }`
[INFO] [stderr]    Compiling websocket_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `a` is never read
[INFO] [stdout]   --> src/sha1.rs:21:14
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |              ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 31 |             a = h0;
[INFO] [stdout]    |             ------ `a` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]   --> src/sha1.rs:21:21
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                     ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 32 |             b = h1;
[INFO] [stdout]    |             ------ `b` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]   --> src/sha1.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                            ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 33 |             c = h2;
[INFO] [stdout]    |             ------ `c` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `d` is never read
[INFO] [stdout]   --> src/sha1.rs:21:35
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                                   ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 34 |             d = h3;
[INFO] [stdout]    |             ------ `d` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `e` is never read
[INFO] [stdout]   --> src/sha1.rs:21:42
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                                          ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 35 |             e = h4;
[INFO] [stdout]    |             ------ `e` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fin`
[INFO] [stdout]    --> src/main.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let fin = (first_byte & 0x80) != 0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_fin`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidCharacter` is never constructed
[INFO] [stdout]   --> src/base64.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub enum Base64Error {
[INFO] [stdout]    |          ----------- variant in this enum
[INFO] [stdout] 10 |     InvalidCharacter,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Base64Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `decode` is never used
[INFO] [stdout]   --> src/base64.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Base64 {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn decode(&mut self, input: &str) -> Result<String, Base64Error> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "eea8fd5e5a7702d52744485a5e737b726ed9b6a73beef6bb577be95e08960ea9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eea8fd5e5a7702d52744485a5e737b726ed9b6a73beef6bb577be95e08960ea9", kill_on_drop: false }`
[INFO] [stdout] eea8fd5e5a7702d52744485a5e737b726ed9b6a73beef6bb577be95e08960ea9
[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=warn" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ff4cd0074b5973dfe83c13c5b5535cb1eded665e05fe16749bc218e918c96ebd
[INFO] running `Command { std: "docker" "start" "-a" "ff4cd0074b5973dfe83c13c5b5535cb1eded665e05fe16749bc218e918c96ebd", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `a` is never read
[INFO] [stderr]   --> src/sha1.rs:21:14
[INFO] [stderr]    |
[INFO] [stderr] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stderr]    |              ^^^^^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 31 |             a = h0;
[INFO] [stderr]    |             ------ `a` is overwritten here before the previous value is read
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `b` is never read
[INFO] [stderr]   --> src/sha1.rs:21:21
[INFO] [stderr]    |
[INFO] [stderr] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stderr]    |                     ^^^^^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 32 |             b = h1;
[INFO] [stderr]    |             ------ `b` is overwritten here before the previous value is read
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]   --> src/sha1.rs:21:28
[INFO] [stderr]    |
[INFO] [stderr] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stderr]    |                            ^^^^^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 33 |             c = h2;
[INFO] [stderr]    |             ------ `c` is overwritten here before the previous value is read
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `d` is never read
[INFO] [stderr]   --> src/sha1.rs:21:35
[INFO] [stderr]    |
[INFO] [stderr] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stderr]    |                                   ^^^^^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 34 |             d = h3;
[INFO] [stderr]    |             ------ `d` is overwritten here before the previous value is read
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `e` is never read
[INFO] [stderr]   --> src/sha1.rs:21:42
[INFO] [stderr]    |
[INFO] [stderr] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stderr]    |                                          ^^^^^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 35 |             e = h4;
[INFO] [stderr]    |             ------ `e` is overwritten here before the previous value is read
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fin`
[INFO] [stderr]    --> src/main.rs:131:9
[INFO] [stderr]     |
[INFO] [stderr] 131 |     let fin = (first_byte & 0x80) != 0;
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_fin`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `InvalidCharacter` is never constructed
[INFO] [stderr]   --> src/base64.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr]  9 | pub enum Base64Error {
[INFO] [stderr]    |          ----------- variant in this enum
[INFO] [stderr] 10 |     InvalidCharacter,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Base64Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `decode` is never used
[INFO] [stderr]   --> src/base64.rs:62:12
[INFO] [stderr]    |
[INFO] [stderr] 23 | impl Base64 {
[INFO] [stderr]    | ----------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 62 |     pub fn decode(&mut self, input: &str) -> Result<String, Base64Error> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `websocket_server` (bin "websocket_server" test) generated 8 warnings (run `cargo fix --bin "websocket_server" -p websocket_server --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/websocket_server-890a9b6fe7990848)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ff4cd0074b5973dfe83c13c5b5535cb1eded665e05fe16749bc218e918c96ebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff4cd0074b5973dfe83c13c5b5535cb1eded665e05fe16749bc218e918c96ebd", kill_on_drop: false }`
[INFO] [stdout] ff4cd0074b5973dfe83c13c5b5535cb1eded665e05fe16749bc218e918c96ebd
