[INFO] fetching crate slack-web-api 0.1.1...
[INFO] building slack-web-api-0.1.1 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate slack-web-api 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate slack-web-api 0.1.1
[INFO] finished tweaking crates.io crate slack-web-api 0.1.1
[INFO] tweaked toml for crates.io crate slack-web-api 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate slack-web-api 0.1.1 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 120 packages to latest compatible versions
[INFO] [stderr]       Adding hyper v0.14.32 (available: v1.7.0)
[INFO] [stderr]       Adding hyper-tls v0.5.0 (available: v0.6.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mpart-async v0.7.0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6cec4485c83cfa8b5cd24037b4b439e44360ac6478981a5bc2d90b07743f0de4
[INFO] running `Command { std: "docker" "start" "-a" "6cec4485c83cfa8b5cd24037b4b439e44360ac6478981a5bc2d90b07743f0de4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cec4485c83cfa8b5cd24037b4b439e44360ac6478981a5bc2d90b07743f0de4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cec4485c83cfa8b5cd24037b4b439e44360ac6478981a5bc2d90b07743f0de4", kill_on_drop: false }`
[INFO] [stdout] 6cec4485c83cfa8b5cd24037b4b439e44360ac6478981a5bc2d90b07743f0de4
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1a0c22199bea78bf21e0f7ea5d4d684d9a757d895b4987ca8999cd74c34b489
[INFO] running `Command { std: "docker" "start" "-a" "e1a0c22199bea78bf21e0f7ea5d4d684d9a757d895b4987ca8999cd74c34b489", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling openssl v0.10.73
[INFO] [stderr]    Compiling tokio-util v0.7.16
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling h2 v0.3.27
[INFO] [stderr]    Compiling mpart-async v0.7.0
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling hyper v0.14.32
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling slack-web-api v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `SlackBlockKitCompositionObject`
[INFO] [stdout]  --> src/entity/block_kit/block.rs:1:102
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{BlockElementImage, BlockElementPlaneTextInput, CompositionObjectText, SlackBlockElement, SlackBlockKitCompositionObject};
[INFO] [stdout]   |                                                                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn channel<S: Into<String>>(mut self, channel: S) -> SlackMessageBuilder {
[INFO] [stdout]    |                                     ----^^^^
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn icon_emoji<S: Into<String>>(mut self, icon_emoji: S) -> SlackMessageBuilder {
[INFO] [stdout]    |                                        ----^^^^
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:31:38
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn username<S: Into<String>>(mut self, username: S) -> SlackMessageBuilder {
[INFO] [stdout]    |                                      ----^^^^
[INFO] [stdout]    |                                      |
[INFO] [stdout]    |                                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:36:57
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn attachments<A: Into<SlackMessageAttachment>>(mut self, attachments: Vec<A>) -> SlackMessageBuilder {
[INFO] [stdout]    |                                                         ----^^^^
[INFO] [stdout]    |                                                         |
[INFO] [stdout]    |                                                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:64:35
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn color<S: Into<String>>(mut self, color: S) -> SlackAttachmentBuilder {
[INFO] [stdout]    |                                   ----^^^^
[INFO] [stdout]    |                                   |
[INFO] [stdout]    |                                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:70:39
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn block<B: Into<SlackBlock>>(mut self, block: B) -> SlackAttachmentBuilder {
[INFO] [stdout]    |                                       ----^^^^
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:77:40
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn blocks<B: Into<SlackBlock>>(mut self, blocks: Vec<B>) -> SlackAttachmentBuilder {
[INFO] [stdout]    |                                        ----^^^^
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 79 |         let mut blocks = blocks;
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.31s
[INFO] running `Command { std: "docker" "inspect" "e1a0c22199bea78bf21e0f7ea5d4d684d9a757d895b4987ca8999cd74c34b489", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1a0c22199bea78bf21e0f7ea5d4d684d9a757d895b4987ca8999cd74c34b489", kill_on_drop: false }`
[INFO] [stdout] e1a0c22199bea78bf21e0f7ea5d4d684d9a757d895b4987ca8999cd74c34b489
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3be1e40fece09a82109d0ada0fee8cfa2c27abc170bb2b3d0db7620bbaa2a2a
[INFO] running `Command { std: "docker" "start" "-a" "d3be1e40fece09a82109d0ada0fee8cfa2c27abc170bb2b3d0db7620bbaa2a2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling signal-hook-registry v1.4.6
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling tokio-util v0.7.16
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling h2 v0.3.27
[INFO] [stderr]    Compiling mpart-async v0.7.0
[INFO] [stderr]    Compiling hyper v0.14.32
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling slack-web-api v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `SlackBlockKitCompositionObject`
[INFO] [stdout]  --> src/entity/block_kit/block.rs:1:102
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{BlockElementImage, BlockElementPlaneTextInput, CompositionObjectText, SlackBlockElement, SlackBlockKitCompositionObject};
[INFO] [stdout]   |                                                                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SlackBlockKitCompositionObject`
[INFO] [stdout]  --> src/entity/block_kit/block.rs:1:102
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{BlockElementImage, BlockElementPlaneTextInput, CompositionObjectText, SlackBlockElement, SlackBlockKitCompositionObject};
[INFO] [stdout]   |                                                                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn channel<S: Into<String>>(mut self, channel: S) -> SlackMessageBuilder {
[INFO] [stdout]    |                                     ----^^^^
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn icon_emoji<S: Into<String>>(mut self, icon_emoji: S) -> SlackMessageBuilder {
[INFO] [stdout]    |                                        ----^^^^
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:31:38
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn username<S: Into<String>>(mut self, username: S) -> SlackMessageBuilder {
[INFO] [stdout]    |                                      ----^^^^
[INFO] [stdout]    |                                      |
[INFO] [stdout]    |                                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:36:57
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn attachments<A: Into<SlackMessageAttachment>>(mut self, attachments: Vec<A>) -> SlackMessageBuilder {
[INFO] [stdout]    |                                                         ----^^^^
[INFO] [stdout]    |                                                         |
[INFO] [stdout]    |                                                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:64:35
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn color<S: Into<String>>(mut self, color: S) -> SlackAttachmentBuilder {
[INFO] [stdout]    |                                   ----^^^^
[INFO] [stdout]    |                                   |
[INFO] [stdout]    |                                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:70:39
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn block<B: Into<SlackBlock>>(mut self, block: B) -> SlackAttachmentBuilder {
[INFO] [stdout]    |                                       ----^^^^
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:77:40
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn blocks<B: Into<SlackBlock>>(mut self, blocks: Vec<B>) -> SlackAttachmentBuilder {
[INFO] [stdout]    |                                        ----^^^^
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 79 |         let mut blocks = blocks;
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn channel<S: Into<String>>(mut self, channel: S) -> SlackMessageBuilder {
[INFO] [stdout]    |                                     ----^^^^
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn icon_emoji<S: Into<String>>(mut self, icon_emoji: S) -> SlackMessageBuilder {
[INFO] [stdout]    |                                        ----^^^^
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:31:38
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn username<S: Into<String>>(mut self, username: S) -> SlackMessageBuilder {
[INFO] [stdout]    |                                      ----^^^^
[INFO] [stdout]    |                                      |
[INFO] [stdout]    |                                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:36:57
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn attachments<A: Into<SlackMessageAttachment>>(mut self, attachments: Vec<A>) -> SlackMessageBuilder {
[INFO] [stdout]    |                                                         ----^^^^
[INFO] [stdout]    |                                                         |
[INFO] [stdout]    |                                                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:64:35
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn color<S: Into<String>>(mut self, color: S) -> SlackAttachmentBuilder {
[INFO] [stdout]    |                                   ----^^^^
[INFO] [stdout]    |                                   |
[INFO] [stdout]    |                                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:70:39
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn block<B: Into<SlackBlock>>(mut self, block: B) -> SlackAttachmentBuilder {
[INFO] [stdout]    |                                       ----^^^^
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:77:40
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn blocks<B: Into<SlackBlock>>(mut self, blocks: Vec<B>) -> SlackAttachmentBuilder {
[INFO] [stdout]    |                                        ----^^^^
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/builder.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 79 |         let mut blocks = blocks;
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SlackApiChatGetPermalinkRequest`, `SlackApiChatMeMessageResponse`, `SlackApiChatPostMessageRequest`, `SlackApiChatUnfurlRequest`, and `SlackMessageAttachment`
[INFO] [stdout]  --> tests/test_chat.rs:1:53
[INFO] [stdout]   |
[INFO] [stdout] 1 | ...t, SlackApiChatGetPermalinkRequest, SlackApiChatMeMessageRequest, SlackApiChatMeMessageResponse, SlackApiChatPostEphemeralRequest, SlackApiChatPostMessageRequest, SlackApiChatScheduledMessagesListRequest, SlackApiChatScheduleMessageRequest, SlackApiChatUnfurlRequest, SlackApiChatUpdateRequest, SlackMessageAttachment};
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SlackBlockFile`
[INFO] [stdout]  --> tests/test_chat.rs:2:87
[INFO] [stdout]   |
[INFO] [stdout] 2 | use slack_web_api::{CompositionObjectText, SlackAttachmentBuilder, SlackBlockContext, SlackBlockFile, SlackBlockHeader, SlackClient, Slac...
[INFO] [stdout]   |                                                                                       ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]  --> tests/test_chat.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::process::exit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 23.33s
[INFO] running `Command { std: "docker" "inspect" "d3be1e40fece09a82109d0ada0fee8cfa2c27abc170bb2b3d0db7620bbaa2a2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3be1e40fece09a82109d0ada0fee8cfa2c27abc170bb2b3d0db7620bbaa2a2a", kill_on_drop: false }`
[INFO] [stdout] d3be1e40fece09a82109d0ada0fee8cfa2c27abc170bb2b3d0db7620bbaa2a2a
