[INFO] cloning repository https://github.com/yuya373/slack-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuya373/slack-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuya373%2Fslack-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuya373%2Fslack-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72d00539329da77df4d77a2d4d30567a51628814
[INFO] checking yuya373/slack-rs against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuya373%2Fslack-rs" "/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/yuya373/slack-rs on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yuya373/slack-rs
[INFO] finished tweaking git repo https://github.com/yuya373/slack-rs
[INFO] tweaked toml for git repo https://github.com/yuya373/slack-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/yuya373/slack-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 748547a9b619283ff9536d35c37fca05d57f054d2ffd81ae8669ec8fa561124d
[INFO] running `Command { std: "docker" "start" "-a" "748547a9b619283ff9536d35c37fca05d57f054d2ffd81ae8669ec8fa561124d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "748547a9b619283ff9536d35c37fca05d57f054d2ffd81ae8669ec8fa561124d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "748547a9b619283ff9536d35c37fca05d57f054d2ffd81ae8669ec8fa561124d", kill_on_drop: false }`
[INFO] [stdout] 748547a9b619283ff9536d35c37fca05d57f054d2ffd81ae8669ec8fa561124d
[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=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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74f229d10dea1b01de9d8c166e27a0d879d02493533f01591c93544328f50267
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "74f229d10dea1b01de9d8c166e27a0d879d02493533f01591c93544328f50267", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking futures v0.1.24
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]     Checking lazycell v1.2.0
[INFO] [stderr]    Compiling openssl v0.10.12
[INFO] [stderr]    Compiling native-tls v0.2.1
[INFO] [stderr]    Compiling rand_core v0.2.1
[INFO] [stderr]     Checking string v0.1.1
[INFO] [stderr]     Checking indexmap v1.0.1
[INFO] [stderr]     Checking utf-8 v0.7.4
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]     Checking encoding_rs v0.8.6
[INFO] [stderr]     Checking dirs v1.0.3
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]    Compiling openssl-sys v0.9.36
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]     Checking lock_api v0.1.3
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking lazy_static v1.1.0
[INFO] [stderr]     Checking url v1.7.1
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking serde_json v1.0.28
[INFO] [stderr]     Checking phf_shared v0.7.23
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]    Compiling syn v0.15.4
[INFO] [stderr]     Checking bytes v0.4.10
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking libflate v0.1.16
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking mio v0.6.16
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[INFO] [stderr]     Checking serde_urlencoded v0.5.3
[INFO] [stderr]     Checking crossbeam-deque v0.6.1
[INFO] [stderr]     Checking http v0.1.13
[INFO] [stderr]     Checking input_buffer v0.2.0
[INFO] [stderr]     Checking mime v0.3.9
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking uuid v0.7.1
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-io v0.1.8
[INFO] [stderr]     Checking tokio-executor v0.1.4
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]     Checking tokio-threadpool v0.1.6
[INFO] [stderr]     Checking tokio-current-thread v0.1.1
[INFO] [stderr]     Checking tokio-timer v0.2.6
[INFO] [stderr]    Compiling phf_codegen v0.7.23
[INFO] [stderr]     Checking tokio-reactor v0.1.5
[INFO] [stderr]     Checking tokio-codec v0.1.0
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking tokio-tcp v0.1.1
[INFO] [stderr]     Checking tokio-uds v0.2.1
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.3
[INFO] [stderr]     Checking tokio v0.1.8
[INFO] [stderr]     Checking tokio-dns-unofficial v0.3.1
[INFO] [stderr]     Checking h2 v0.1.12
[INFO] [stderr]    Compiling serde_derive v1.0.79
[INFO] [stderr]     Checking tungstenite v0.6.0
[INFO] [stderr]     Checking tokio-tls v0.2.0
[INFO] [stderr]     Checking hyper v0.12.10
[INFO] [stderr]     Checking tokio-tungstenite v0.6.0
[INFO] [stderr]     Checking hyper-tls v0.3.0
[INFO] [stderr]     Checking reqwest v0.9.0
[INFO] [stderr]     Checking slack-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `futures::future`
[INFO] [stdout]  --> src/model/workspace.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures::future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::Sink`
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use futures::Sink;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Channel`, `Group`, `Im`, `Me`, `Mpim`, `Team`
[INFO] [stdout]   --> src/main.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 | use model::{Channel, Group, Im, Me, Mpim, Team, Workspace};
[INFO] [stdout]    |             ^^^^^^^  ^^^^^  ^^  ^^  ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::future`
[INFO] [stdout]  --> src/model/workspace.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures::future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::Sink`
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use futures::Sink;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Channel`, `Group`, `Im`, `Me`, `Mpim`, `Team`
[INFO] [stdout]   --> src/main.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 | use model::{Channel, Group, Im, Me, Mpim, Team, Workspace};
[INFO] [stdout]    |             ^^^^^^^  ^^^^^  ^^  ^^  ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `All`
[INFO] [stdout]  --> src/api/conversations.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     All,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Timestamp`
[INFO] [stdout]   --> src/model/mod.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | type Timestamp = String;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Type` should have a snake case name
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Type: ActionType,
[INFO] [stdout]    |     ^^^^ help: convert the identifier to snake case: `type`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/rtm/ping.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 | /             tx.unbounded_send(Action::ping())
[INFO] [stdout] 12 | |                 .map_err(|err| println!("Failed to send Action::ping, {:?}", err));
[INFO] [stdout]    | |___________________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Type` should have a snake case name
[INFO] [stdout]   --> src/rtm/handler.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Type: &'a str,
[INFO] [stdout]    |     ^^^^ help: convert the identifier to snake case: `type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `All`
[INFO] [stdout]  --> src/api/conversations.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     All,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Timestamp`
[INFO] [stdout]   --> src/model/mod.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | type Timestamp = String;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Type` should have a snake case name
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Type: ActionType,
[INFO] [stdout]    |     ^^^^ help: convert the identifier to snake case: `type`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/rtm/ping.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 | /             tx.unbounded_send(Action::ping())
[INFO] [stdout] 12 | |                 .map_err(|err| println!("Failed to send Action::ping, {:?}", err));
[INFO] [stdout]    | |___________________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Type` should have a snake case name
[INFO] [stdout]   --> src/rtm/handler.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Type: &'a str,
[INFO] [stdout]    |     ^^^^ help: convert the identifier to snake case: `type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.67s
[INFO] running `Command { std: "docker" "inspect" "74f229d10dea1b01de9d8c166e27a0d879d02493533f01591c93544328f50267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74f229d10dea1b01de9d8c166e27a0d879d02493533f01591c93544328f50267", kill_on_drop: false }`
[INFO] [stdout] 74f229d10dea1b01de9d8c166e27a0d879d02493533f01591c93544328f50267