[INFO] cloning repository https://github.com/ProgramFOX/lichess-event-stream-watcher
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ProgramFOX/lichess-event-stream-watcher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FProgramFOX%2Flichess-event-stream-watcher", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FProgramFOX%2Flichess-event-stream-watcher'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 548f6b80ee628c0ef32e140247e49a943e0d4def
[INFO] testing ProgramFOX/lichess-event-stream-watcher against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FProgramFOX%2Flichess-event-stream-watcher" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ProgramFOX/lichess-event-stream-watcher on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ProgramFOX/lichess-event-stream-watcher
[INFO] finished tweaking git repo https://github.com/ProgramFOX/lichess-event-stream-watcher
[INFO] tweaked toml for git repo https://github.com/ProgramFOX/lichess-event-stream-watcher written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ProgramFOX/lichess-event-stream-watcher already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c89780c505af74fb3c416b79911e70eae76a91adce48cd90f1ef2380d8b4f110
[INFO] running `Command { std: "docker" "start" "-a" "c89780c505af74fb3c416b79911e70eae76a91adce48cd90f1ef2380d8b4f110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c89780c505af74fb3c416b79911e70eae76a91adce48cd90f1ef2380d8b4f110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c89780c505af74fb3c416b79911e70eae76a91adce48cd90f1ef2380d8b4f110", kill_on_drop: false }`
[INFO] [stdout] c89780c505af74fb3c416b79911e70eae76a91adce48cd90f1ef2380d8b4f110
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d974ec09781cc0174d2e5ef5c83c351f776ee6af45d6390673b4b9e7ea8e048f
[INFO] running `Command { std: "docker" "start" "-a" "d974ec09781cc0174d2e5ef5c83c351f776ee6af45d6390673b4b9e7ea8e048f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling cfg-if v0.1.5
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling futures v0.1.23
[INFO] [stderr]    Compiling byteorder v1.2.4
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling pkg-config v0.3.13
[INFO] [stderr]    Compiling slab v0.4.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.12
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling httparse v1.3.2
[INFO] [stderr]    Compiling itoa v0.4.2
[INFO] [stderr]    Compiling openssl v0.10.11
[INFO] [stderr]    Compiling native-tls v0.2.1
[INFO] [stderr]    Compiling serde v1.0.71
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling string v0.1.1
[INFO] [stderr]    Compiling ryu v0.2.3
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]    Compiling arrayref v0.3.5
[INFO] [stderr]    Compiling byte-tools v0.2.0
[INFO] [stderr]    Compiling indexmap v1.0.1
[INFO] [stderr]    Compiling rand_core v0.2.1
[INFO] [stderr]    Compiling utf-8 v0.7.4
[INFO] [stderr]    Compiling regex-syntax v0.6.3
[INFO] [stderr]    Compiling generic-array v0.9.0
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling block-buffer v0.3.3
[INFO] [stderr]    Compiling digest v0.7.5
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling base64 v0.9.2
[INFO] [stderr]    Compiling bytes v0.4.9
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling mio v0.6.15
[INFO] [stderr]    Compiling sha-1 v0.7.0
[INFO] [stderr]    Compiling http v0.1.10
[INFO] [stderr]    Compiling input_buffer v0.2.0
[INFO] [stderr]    Compiling openssl-sys v0.9.35
[INFO] [stderr]    Compiling rlua v0.16.2
[INFO] [stderr]    Compiling quote v0.6.6
[INFO] [stderr]    Compiling tokio-io v0.1.7
[INFO] [stderr]    Compiling tokio-executor v0.1.3
[INFO] [stderr]    Compiling want v0.0.6
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling syn v0.14.8
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling tokio-timer v0.2.5
[INFO] [stderr]    Compiling tokio-codec v0.1.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.3
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[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling h2 v0.1.12
[INFO] [stderr]    Compiling tokio-tcp v0.1.1
[INFO] [stderr]    Compiling tokio-udp v0.1.1
[INFO] [stderr]    Compiling crossbeam-deque v0.3.1
[INFO] [stderr]    Compiling url v1.7.1
[INFO] [stderr]    Compiling tokio-threadpool v0.1.5
[INFO] [stderr]    Compiling tokio-fs v0.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.71
[INFO] [stderr]    Compiling tokio v0.1.7
[INFO] [stderr]    Compiling hyper v0.12.8
[INFO] [stderr]    Compiling tungstenite v0.6.0
[INFO] [stderr]    Compiling serde_regex v0.3.1
[INFO] [stderr]    Compiling serde_json v1.0.26
[INFO] [stderr]    Compiling hyper-tls v0.3.0
[INFO] [stderr]    Compiling lichess-event-stream v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0583]: file not found for module `conf`
[INFO] [stdout]   --> src/main.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | mod conf;
[INFO] [stdout]    | ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: to create the module `conf`, create file "src/conf.rs" or "src/conf/mod.rs"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]    --> src/slack/command.rs:212:24
[INFO] [stdout]     |
[INFO] [stdout] 212 | impl From<std::option::NoneError> for ParseError {
[INFO] [stdout]     |                        ^^^^^^^^^ not found in `std::option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]    --> src/slack/command.rs:213:29
[INFO] [stdout]     |
[INFO] [stdout] 213 |     fn from(_: std::option::NoneError) -> Self {
[INFO] [stdout]     |                             ^^^^^^^^^ not found in `std::option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `SLACK_BOT_TOKEN` in module `conf`
[INFO] [stdout]   --> src/status.rs:49:35
[INFO] [stdout]    |
[INFO] [stdout] 49 | ...                   conf::SLACK_BOT_TOKEN,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^ not found in `conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `SLACK_BOT_USER_ID` in module `conf`
[INFO] [stdout]   --> src/status.rs:50:35
[INFO] [stdout]    |
[INFO] [stdout] 50 | ...                   conf::SLACK_BOT_USER_ID,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^ not found in `conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `SLACK_CHANNEL` in module `conf`
[INFO] [stdout]   --> src/status.rs:51:35
[INFO] [stdout]    |
[INFO] [stdout] 51 | ...                   conf::SLACK_CHANNEL,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^ not found in `conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `TOKEN` in module `conf`
[INFO] [stdout]   --> src/main.rs:40:59
[INFO] [stdout]    |
[INFO] [stdout] 40 |         eventstream::watch_event_stream(tx.clone(), conf::TOKEN, status_tx.clone());
[INFO] [stdout]    |                                                           ^^^^^ not found in `conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `SLACK_BOT_TOKEN` in module `conf`
[INFO] [stdout]   --> src/main.rs:43:19
[INFO] [stdout]    |
[INFO] [stdout] 43 |             conf::SLACK_BOT_TOKEN,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^ not found in `conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `SLACK_BOT_USER_ID` in module `conf`
[INFO] [stdout]   --> src/main.rs:44:19
[INFO] [stdout]    |
[INFO] [stdout] 44 |             conf::SLACK_BOT_USER_ID,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^ not found in `conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `SLACK_CHANNEL` in module `conf`
[INFO] [stdout]   --> src/main.rs:45:19
[INFO] [stdout]    |
[INFO] [stdout] 45 |             conf::SLACK_CHANNEL,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^ not found in `conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `TOKEN` in module `conf`
[INFO] [stdout]   --> src/main.rs:50:58
[INFO] [stdout]    |
[INFO] [stdout] 50 |         status::status_loop(status_rx, tx.clone(), conf::TOKEN, status_tx.clone());
[INFO] [stdout]    |                                                          ^^^^^ not found in `conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `TOKEN` in module `conf`
[INFO] [stdout]   --> src/main.rs:55:19
[INFO] [stdout]    |
[INFO] [stdout] 55 |             conf::TOKEN,
[INFO] [stdout]    |                   ^^^^^ not found in `conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `RULES_PATH` in module `conf`
[INFO] [stdout]   --> src/main.rs:56:19
[INFO] [stdout]    |
[INFO] [stdout] 56 |             conf::RULES_PATH,
[INFO] [stdout]    |                   ^^^^^^^^^^ not found in `conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `SLACK_BOT_TOKEN` in module `conf`
[INFO] [stdout]   --> src/main.rs:57:19
[INFO] [stdout]    |
[INFO] [stdout] 57 |             conf::SLACK_BOT_TOKEN,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^ not found in `conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `SLACK_CHANNEL` in module `conf`
[INFO] [stdout]   --> src/main.rs:58:19
[INFO] [stdout]    |
[INFO] [stdout] 58 |             conf::SLACK_CHANNEL,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^ not found in `conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `SLACK_NOTIFY_CHANNEL` in module `conf`
[INFO] [stdout]   --> src/main.rs:59:19
[INFO] [stdout]    |
[INFO] [stdout] 59 |             conf::SLACK_NOTIFY_CHANNEL,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^ not found in `conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]   --> src/slack/command.rs:11:23
[INFO] [stdout]    |
[INFO] [stdout] 8  | / pub fn handle_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 9  | |     let cmd = command.clone();
[INFO] [stdout] 10 | |     let parts: Vec<&str> = cmd.split(" ").collect();
[INFO] [stdout] 11 | |     match parts.get(0)? {
[INFO] [stdout]    | |                       ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...  |
[INFO] [stdout] 17 | |     }
[INFO] [stdout] 18 | | }
[INFO] [stdout]    | |_- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:29:34
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] 29  | |         code = first_split.get(1)?.clone();
[INFO] [stdout]     | |                                  ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:38:20
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 38  | |     if !args.get(0)?.eq(&&"rules") {
[INFO] [stdout]     | |                    ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:39:23
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 39  | |         if args.get(0)?.eq(&&"seen") {
[INFO] [stdout]     | |                       ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:41:32
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 41  | |                 (***args.get(1)?).to_owned(),
[INFO] [stdout]     | |                                ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:50:22
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 50  | |     match args.get(1)? {
[INFO] [stdout]     | |                      ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:52:38
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 52  | |             let susp_ip = args.get(3)?.eq(&&"if_susp_ip") || args.get(3)?.eq(&&"if_ip_susp");
[INFO] [stdout]     | |                                      ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:52:73
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 52  | |             let susp_ip = args.get(3)?.eq(&&"if_susp_ip") || args.get(3)?.eq(&&"if_ip_susp");
[INFO] [stdout]     | |                                                                         ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:53:29
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 53  | |             if !(args.get(3)?.eq(&&"if") || susp_ip) || !args.get(7)?.eq(&&"then") {
[INFO] [stdout]     | |                             ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:53:69
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 53  | |             if !(args.get(3)?.eq(&&"if") || susp_ip) || !args.get(7)?.eq(&&"then") {
[INFO] [stdout]     | |                                                                     ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:57:47
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 57  | |             let name: String = (***args.get(2)?).to_owned();
[INFO] [stdout]     | |                                               ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:59:48
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 59  | |             let criterion_element = args.get(4)?;
[INFO] [stdout]     | |                                                ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:60:46
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 60  | |             let criterion_check = args.get(5)?;
[INFO] [stdout]     | |                                              ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:61:58
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 61  | |             let criterion_value: String = (***args.get(6)?).to_owned();
[INFO] [stdout]     | |                                                          ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:88:24
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 88  | |                 .get(8)?
[INFO] [stdout]     | |                        ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:104:44
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 104 | |             if actions.len() != args.get(8)?.split("+").count() {
[INFO] [stdout]     | |                                            ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:129:60
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 129 | |             tx.send(Event::InternalShowRule((***args.get(2)?).to_owned()))
[INFO] [stdout]     | |                                                            ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:135:62
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 135 | |             tx.send(Event::InternalRemoveRule((***args.get(2)?).to_owned()))
[INFO] [stdout]     | |                                                              ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:141:64
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 141 | |             tx.send(Event::InternalDisableRules((***args.get(2)?).to_owned()))
[INFO] [stdout]     | |                                                                ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:147:63
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 147 | |             tx.send(Event::InternalEnableRules((***args.get(2)?).to_owned()))
[INFO] [stdout]     | |                                                               ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/slack/command.rs:163:24
[INFO] [stdout]     |
[INFO] [stdout] 25  | / fn handle_signup_command(command: String, tx: Sender<Event>) -> Result<Option<String>, ParseError> {
[INFO] [stdout] 26  | |     let mut first_split: Vec<&str> = command.split("`").collect();
[INFO] [stdout] 27  | |     let mut code = "";
[INFO] [stdout] 28  | |     if first_split.len() > 2 {
[INFO] [stdout] ...   |
[INFO] [stdout] 163 | |                 .get(1)?
[INFO] [stdout]     | |                        ^ use `.ok_or(...)?` to provide an error compatible with `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     }
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<std::option::Option<std::string::String>, command::ParseError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 38 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0412, E0425, E0554, E0583.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lichess-event-stream`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "d974ec09781cc0174d2e5ef5c83c351f776ee6af45d6390673b4b9e7ea8e048f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d974ec09781cc0174d2e5ef5c83c351f776ee6af45d6390673b4b9e7ea8e048f", kill_on_drop: false }`
[INFO] [stdout] d974ec09781cc0174d2e5ef5c83c351f776ee6af45d6390673b4b9e7ea8e048f
