[INFO] cloning repository https://github.com/Xyven1/letslearnrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Xyven1/letslearnrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXyven1%2Fletslearnrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXyven1%2Fletslearnrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 14973561e98bfafe699d3eb48310f6584d407ae5
[INFO] checking Xyven1/letslearnrust against master#fe348cd1a8e0fa445b772393147ed865904dcd4d for pr-139587-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXyven1%2Fletslearnrust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Xyven1/letslearnrust on toolchain fe348cd1a8e0fa445b772393147ed865904dcd4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fe348cd1a8e0fa445b772393147ed865904dcd4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Xyven1/letslearnrust
[INFO] finished tweaking git repo https://github.com/Xyven1/letslearnrust
[INFO] tweaked toml for git repo https://github.com/Xyven1/letslearnrust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Xyven1/letslearnrust 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" "+fe348cd1a8e0fa445b772393147ed865904dcd4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded log v0.4.20
[INFO] [stderr]   Downloaded tower-service v0.3.2
[INFO] [stderr]   Downloaded headers-core v0.2.0
[INFO] [stderr]   Downloaded pin-project-lite v0.2.13
[INFO] [stderr]   Downloaded sha1_smol v1.0.0
[INFO] [stderr]   Downloaded windows-targets v0.48.5
[INFO] [stderr]   Downloaded tokio-retry v0.3.0
[INFO] [stderr]   Downloaded rustls-pemfile v1.0.3
[INFO] [stderr]   Downloaded futures-macro v0.3.28
[INFO] [stderr]   Downloaded futures-executor v0.3.28
[INFO] [stderr]   Downloaded async-trait v0.1.73
[INFO] [stderr]   Downloaded arc-swap v1.6.0
[INFO] [stderr]   Downloaded futures v0.3.28
[INFO] [stderr]   Downloaded hashbrown v0.12.3
[INFO] [stderr]   Downloaded unicode-normalization v0.1.22
[INFO] [stderr]   Downloaded combine v4.6.6
[INFO] [stderr]   Downloaded h2 v0.3.21
[INFO] [stderr]   Downloaded hyper v0.14.27
[INFO] [stderr]   Downloaded redis v0.23.2
[INFO] [stderr]   Downloaded serde_json v1.0.105
[INFO] [stderr]   Downloaded syn v2.0.29
[INFO] [stderr]   Downloaded idna v0.4.0
[INFO] [stderr]   Downloaded gimli v0.28.0
[INFO] [stderr]   Downloaded object v0.32.0
[INFO] [stderr]   Downloaded futures-util v0.3.28
[INFO] [stderr]   Downloaded warp v0.3.5
[INFO] [stderr]   Downloaded memchr v2.6.1
[INFO] [stderr]   Downloaded http v0.2.9
[INFO] [stderr]   Downloaded windows_aarch64_gnullvm v0.48.5
[INFO] [stderr]   Downloaded windows_x86_64_gnullvm v0.48.5
[INFO] [stderr]   Downloaded thiserror-impl v1.0.47
[INFO] [stderr]   Downloaded parking_lot_core v0.9.8
[INFO] [stderr]   Downloaded base64 v0.13.1
[INFO] [stderr]   Downloaded getrandom v0.2.10
[INFO] [stderr]   Downloaded rand v0.8.5
[INFO] [stderr]   Downloaded mio v0.8.8
[INFO] [stderr]   Downloaded base64 v0.21.3
[INFO] [stderr]   Downloaded serde v1.0.188
[INFO] [stderr]   Downloaded url v2.4.1
[INFO] [stderr]   Downloaded tungstenite v0.18.0
[INFO] [stderr]   Downloaded cc v1.0.83
[INFO] [stderr]   Downloaded libc v0.2.147
[INFO] [stderr]   Downloaded tokio v1.32.0
[INFO] [stderr]   Downloaded backtrace v0.3.69
[INFO] [stderr]   Downloaded bytes v1.4.0
[INFO] [stderr]   Downloaded tokio-util v0.7.8
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.48.5
[INFO] [stderr]   Downloaded windows_i686_gnu v0.48.5
[INFO] [stderr]   Downloaded windows_i686_msvc v0.48.5
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.48.5
[INFO] [stderr]   Downloaded tracing-core v0.1.31
[INFO] [stderr]   Downloaded headers v0.3.8
[INFO] [stderr]   Downloaded socket2 v0.4.9
[INFO] [stderr]   Downloaded pin-project v1.1.3
[INFO] [stderr]   Downloaded serde_derive v1.0.188
[INFO] [stderr]   Downloaded futures-channel v0.3.28
[INFO] [stderr]   Downloaded httparse v1.8.0
[INFO] [stderr]   Downloaded typenum v1.16.0
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.48.5
[INFO] [stderr]   Downloaded unicode-bidi v0.3.13
[INFO] [stderr]   Downloaded tinyvec v1.6.0
[INFO] [stderr]   Downloaded addr2line v0.21.0
[INFO] [stderr]   Downloaded adler v1.0.2
[INFO] [stderr]   Downloaded miniz_oxide v0.7.1
[INFO] [stderr]   Downloaded hermit-abi v0.3.2
[INFO] [stderr]   Downloaded smallvec v1.11.0
[INFO] [stderr]   Downloaded parking_lot v0.12.1
[INFO] [stderr]   Downloaded socket2 v0.5.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.66
[INFO] [stderr]   Downloaded unicode-ident v1.0.11
[INFO] [stderr]   Downloaded once_cell v1.18.0
[INFO] [stderr]   Downloaded indexmap v1.9.3
[INFO] [stderr]   Downloaded mime_guess v2.0.4
[INFO] [stderr]   Downloaded ryu v1.0.15
[INFO] [stderr]   Downloaded tokio-tungstenite v0.18.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.23
[INFO] [stderr]   Downloaded encoding_rs v0.8.33
[INFO] [stderr]   Downloaded lock_api v0.4.10
[INFO] [stderr]   Downloaded quote v1.0.33
[INFO] [stderr]   Downloaded tokio-macros v2.1.0
[INFO] [stderr]   Downloaded http-body v0.4.5
[INFO] [stderr]   Downloaded httpdate v1.0.3
[INFO] [stderr]   Downloaded multer v2.1.0
[INFO] [stderr]   Downloaded pin-project-internal v1.1.3
[INFO] [stderr]   Downloaded tokio-stream v0.1.14
[INFO] [stderr]   Downloaded futures-task v0.3.28
[INFO] [stderr]   Downloaded thiserror v1.0.47
[INFO] [stderr]   Downloaded futures-core v0.3.28
[INFO] [stderr]   Downloaded redox_syscall v0.3.5
[INFO] [stderr]   Downloaded rand_chacha v0.3.1
[INFO] [stderr]   Downloaded num_cpus v1.16.0
[INFO] [stderr]   Downloaded autocfg v1.1.0
[INFO] [stderr]   Downloaded signal-hook-registry v1.4.1
[INFO] [stderr]   Downloaded futures-io v0.3.28
[INFO] [stderr]   Downloaded byteorder v1.4.3
[INFO] [stderr]   Downloaded cpufeatures v0.2.9
[INFO] [stderr]   Downloaded form_urlencoded v1.2.0
[INFO] [stderr]   Downloaded percent-encoding v2.3.0
[INFO] [stderr]   Downloaded utf-8 v0.7.6
[INFO] [stderr]   Downloaded futures-sink v0.3.28
[INFO] [stderr]   Downloaded scoped-tls v1.0.1
[INFO] [stderr]   Downloaded itoa v1.0.9
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.17
[INFO] [stderr]   Downloaded rand_core v0.6.4
[INFO] [stderr]   Downloaded sha1 v0.10.5
[INFO] [stderr]   Downloaded uuid v1.4.1
[INFO] [stderr]   Downloaded try-lock v0.2.4
[INFO] [stderr]   Downloaded tracing v0.1.37
[INFO] [stderr]   Downloaded windows-sys v0.48.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+fe348cd1a8e0fa445b772393147ed865904dcd4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ecfd5f3c4d36d549b892139741a955def1edfdf6d7c3dcb6c52783264458e6b0
[INFO] running `Command { std: "docker" "start" "-a" "ecfd5f3c4d36d549b892139741a955def1edfdf6d7c3dcb6c52783264458e6b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecfd5f3c4d36d549b892139741a955def1edfdf6d7c3dcb6c52783264458e6b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecfd5f3c4d36d549b892139741a955def1edfdf6d7c3dcb6c52783264458e6b0", kill_on_drop: false }`
[INFO] [stdout] ecfd5f3c4d36d549b892139741a955def1edfdf6d7c3dcb6c52783264458e6b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+fe348cd1a8e0fa445b772393147ed865904dcd4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b54b4db57fdcccfe9ec0844740ec6eba619c976a6968fb70071d40230931eeb
[INFO] running `Command { std: "docker" "start" "-a" "3b54b4db57fdcccfe9ec0844740ec6eba619c976a6968fb70071d40230931eeb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]     Checking memchr v2.6.1
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]     Checking form_urlencoded v1.2.0
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]    Compiling thiserror v1.0.47
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]    Compiling multer v2.1.0
[INFO] [stderr]    Compiling async-trait v0.1.73
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]    Compiling serde_json v1.0.105
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]     Checking try-lock v0.2.4
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]     Checking base64 v0.21.3
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking socket2 v0.5.3
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking url v2.4.1
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking arc-swap v1.6.0
[INFO] [stderr]     Checking rustls-pemfile v1.0.3
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha1 v0.10.5
[INFO] [stderr]     Checking headers v0.3.8
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.47
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stderr]     Checking pin-project v1.1.3
[INFO] [stderr]     Checking tungstenite v0.18.0
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking tokio-util v0.7.8
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stderr]     Checking tokio-retry v0.3.0
[INFO] [stderr]     Checking tokio-tungstenite v0.18.0
[INFO] [stderr]     Checking h2 v0.3.21
[INFO] [stderr]     Checking combine v4.6.6
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking uuid v1.4.1
[INFO] [stderr]     Checking hyper v0.14.27
[INFO] [stderr]     Checking redis v0.23.2
[INFO] [stderr]     Checking warp v0.3.5
[INFO] [stderr]     Checking letslearnrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `add_topic` and `remove_topic` are never used
[INFO] [stdout]   --> src/client.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 69 | impl Client {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn add_topic(&mut self, topic: String) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     pub fn remove_topic(&mut self, topic: String) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `client_sub_key` is never used
[INFO] [stdout]   --> src/db.rs:28:14
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub async fn client_sub_key(client: Client, channel: String) -> RedisResult<()> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `user_id` is never read
[INFO] [stdout]  --> src/handler.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct RegisterRequest {
[INFO] [stdout]   |            --------------- field in this struct
[INFO] [stdout] 8 |     user_id: usize,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RegisterRequest` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_topic` and `remove_topic` are never used
[INFO] [stdout]   --> src/client.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 69 | impl Client {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn add_topic(&mut self, topic: String) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     pub fn remove_topic(&mut self, topic: String) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `client_sub_key` is never used
[INFO] [stdout]   --> src/db.rs:28:14
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub async fn client_sub_key(client: Client, channel: String) -> RedisResult<()> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `user_id` is never read
[INFO] [stdout]  --> src/handler.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct RegisterRequest {
[INFO] [stdout]   |            --------------- field in this struct
[INFO] [stdout] 8 |     user_id: usize,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RegisterRequest` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.53s
[INFO] running `Command { std: "docker" "inspect" "3b54b4db57fdcccfe9ec0844740ec6eba619c976a6968fb70071d40230931eeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b54b4db57fdcccfe9ec0844740ec6eba619c976a6968fb70071d40230931eeb", kill_on_drop: false }`
[INFO] [stdout] 3b54b4db57fdcccfe9ec0844740ec6eba619c976a6968fb70071d40230931eeb