[INFO] cloning repository https://github.com/rmanosuthi/yap_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rmanosuthi/yap_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frmanosuthi%2Fyap_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frmanosuthi%2Fyap_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 42d2cfecec479ecc0573002d5180a0f4c87612aa
[INFO] testing rmanosuthi/yap_server against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frmanosuthi%2Fyap_server" "/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/rmanosuthi/yap_server on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rmanosuthi/yap_server
[INFO] finished tweaking git repo https://github.com/rmanosuthi/yap_server
[INFO] tweaked toml for git repo https://github.com/rmanosuthi/yap_server written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/rmanosuthi/yap_server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded urlencoding v1.1.1
[INFO] [stderr]   Downloaded buf_redux v0.8.4
[INFO] [stderr]   Downloaded http v0.2.2
[INFO] [stderr]   Downloaded indexmap v1.6.1
[INFO] [stderr]   Downloaded signal-hook v0.1.17
[INFO] [stderr]   Downloaded openssl v0.10.32
[INFO] [stderr]   Downloaded vcpkg v0.2.11
[INFO] [stderr]   Downloaded tokio-tungstenite v0.11.0
[INFO] [stderr]   Downloaded crossbeam v0.8.0
[INFO] [stderr]   Downloaded warp v0.2.5
[INFO] [stderr]   Downloaded derive_utils v0.11.1
[INFO] [stderr]   Downloaded bufstream v0.1.4
[INFO] [stderr]   Downloaded twox-hash v1.6.0
[INFO] [stderr]   Downloaded ctrlc v3.1.7
[INFO] [stderr]   Downloaded io-enum v0.2.5
[INFO] [stderr]   Downloaded mysql_common v0.24.1
[INFO] [stderr]   Downloaded rand_chacha v0.3.0
[INFO] [stderr]   Downloaded sha-1 v0.8.2
[INFO] [stderr]   Downloaded ahash v0.4.7
[INFO] [stderr]   Downloaded getrandom v0.2.0
[INFO] [stderr]   Downloaded rand_hc v0.3.0
[INFO] [stderr]   Downloaded crossbeam-queue v0.3.1
[INFO] [stderr]   Downloaded humantime v2.0.1
[INFO] [stderr]   Downloaded cassowary v0.3.0
[INFO] [stderr]   Downloaded env_logger v0.8.2
[INFO] [stderr]   Downloaded rand_core v0.6.0
[INFO] [stderr]   Downloaded lexical v5.2.0
[INFO] [stderr]   Downloaded bigdecimal v0.1.2
[INFO] [stderr]   Downloaded multipart v0.17.0
[INFO] [stderr]   Downloaded lru v0.6.3
[INFO] [stderr]   Downloaded rust_decimal v1.9.0
[INFO] [stderr]   Downloaded num-bigint v0.2.6
[INFO] [stderr]   Downloaded mysql v20.1.0
[INFO] [stderr]   Downloaded rand v0.8.0
[INFO] [stderr]   Downloaded tui v0.13.0
[INFO] [stderr]   Downloaded headers v0.3.2
[INFO] [stderr]   Downloaded crossterm v0.18.2
[INFO] [stderr]   Downloaded crossterm_winapi v0.6.2
[INFO] [stderr]   Downloaded named_pipe v0.4.1
[INFO] [stderr]   Downloaded pem v0.8.2
[INFO] [stderr]   Downloaded headers-core v0.2.0
[INFO] [stderr]   Downloaded tokio v0.2.24
[INFO] [stderr]   Downloaded twoway v0.1.8
[INFO] [stderr]   Downloaded openssl-sys v0.9.60
[INFO] [stderr]   Downloaded nix v0.19.1
[INFO] [stderr]   Downloaded lexical-core v0.7.4
[INFO] [stderr]   Downloaded libz-sys v1.1.2
[INFO] [stderr]   Downloaded syn v1.0.56
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65423272042e2479e88a1a7d2026df48245403ce0094e894663b1782370c3635
[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" "65423272042e2479e88a1a7d2026df48245403ce0094e894663b1782370c3635", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65423272042e2479e88a1a7d2026df48245403ce0094e894663b1782370c3635", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65423272042e2479e88a1a7d2026df48245403ce0094e894663b1782370c3635", kill_on_drop: false }`
[INFO] [stdout] 65423272042e2479e88a1a7d2026df48245403ce0094e894663b1782370c3635
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ce2c47cba19d515ff38b84d6a5749e2d23e591b028ff7ba875a380624338439
[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" "4ce2c47cba19d515ff38b84d6a5749e2d23e591b028ff7ba875a380624338439", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling ahash v0.4.7
[INFO] [stderr]    Compiling getrandom v0.2.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling io-enum v0.2.5
[INFO] [stderr]    Compiling headers-core v0.2.0
[INFO] [stderr]    Compiling native-tls v0.2.6
[INFO] [stderr]    Compiling lexical v5.2.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling derive_utils v0.11.1
[INFO] [stderr]    Compiling pem v0.8.2
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling rust_decimal v1.9.0
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling lru v0.6.3
[INFO] [stderr]    Compiling bigdecimal v0.1.2
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling crossbeam v0.8.0
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling mio v0.7.6
[INFO] [stderr]    Compiling parking_lot_core v0.8.2
[INFO] [stderr]    Compiling time v0.2.23
[INFO] [stderr]    Compiling flate2 v1.0.19
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling nix v0.19.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling pin-project v0.4.27
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_core v0.6.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling signal-hook v0.1.17
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling headers v0.3.2
[INFO] [stderr]    Compiling env_logger v0.8.2
[INFO] [stderr]    Compiling tracing-futures v0.2.4
[INFO] [stderr]    Compiling openssl v0.10.32
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling crossterm v0.18.2
[INFO] [stderr]    Compiling rand v0.8.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling tui v0.13.0
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling twox-hash v1.6.0
[INFO] [stderr]    Compiling mysql_common v0.24.1
[INFO] [stderr]    Compiling multipart v0.17.0
[INFO] [stderr]    Compiling tungstenite v0.11.1
[INFO] [stderr]    Compiling ctrlc v3.1.7
[INFO] [stderr]    Compiling mysql v20.1.0
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tokio-tungstenite v0.11.0
[INFO] [stderr]    Compiling h2 v0.2.7
[INFO] [stderr]    Compiling hyper v0.13.9
[INFO] [stderr]    Compiling warp v0.2.5
[INFO] [stderr]    Compiling yap_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene, decl_macro)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(async_closure)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::imports::*`
[INFO] [stdout]   --> src/common.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     use crate::imports::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::symbols::*`
[INFO] [stdout]   --> src/common.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use crate::symbols::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::symbols::*`
[INFO] [stdout]  --> src/errors.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::symbols::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::imports::*`
[INFO] [stdout]  --> src/msg.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use self::imports::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::join`
[INFO] [stdout]  --> src/net.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::join;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hashbrown::hash_map::Entry`
[INFO] [stdout]  --> src/ws.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use hashbrown::hash_map::Entry;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ordering`
[INFO] [stdout]   --> src/main.rs:68:37
[INFO] [stdout]    |
[INFO] [stdout] 68 | use std::sync::atomic::{AtomicBool, Ordering};
[INFO] [stdout]    |                                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/web.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut lt_uid: Arc<RwLock<HashMap<LoginToken, UserId>>> = Arc::new(RwLock::new(HashMap::new()));
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/web.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut web_chans = web_chans;
[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/ws.rs:44:14
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let (mut s_to_worker, mut r_from_worker) = tokio::sync::mpsc::channel(100000);
[INFO] [stdout]    |              ----^^^^^^^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/ws.rs:312:57
[INFO] [stdout]     |
[INFO] [stdout] 311 | ...                   unimplemented!();
[INFO] [stdout]     |                       ----------------- any code following this expression is unreachable
[INFO] [stdout] 312 | ...                   debug!("worker cid {}: transmit ok", &conn_id);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `yap_server`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "4ce2c47cba19d515ff38b84d6a5749e2d23e591b028ff7ba875a380624338439", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ce2c47cba19d515ff38b84d6a5749e2d23e591b028ff7ba875a380624338439", kill_on_drop: false }`
[INFO] [stdout] 4ce2c47cba19d515ff38b84d6a5749e2d23e591b028ff7ba875a380624338439