[INFO] cloning repository https://github.com/codepr/ruft
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/codepr/ruft" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodepr%2Fruft", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodepr%2Fruft'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4cc04e3173c6181ee6477e1b5092bd7871136b2a
[INFO] building codepr/ruft against master#a7f375789bab1a4e4a291c963081a8ca7d2b6bd7 for pr-93180
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodepr%2Fruft" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/codepr/ruft on toolchain a7f375789bab1a4e4a291c963081a8ca7d2b6bd7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/codepr/ruft
[INFO] finished tweaking git repo https://github.com/codepr/ruft
[INFO] tweaked toml for git repo https://github.com/codepr/ruft written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/codepr/ruft already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 576dc02dc5c915672140037f1112c925b7b1e9dc80605c147afeb75010c27ed2
[INFO] running `Command { std: "docker" "start" "-a" "576dc02dc5c915672140037f1112c925b7b1e9dc80605c147afeb75010c27ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "576dc02dc5c915672140037f1112c925b7b1e9dc80605c147afeb75010c27ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "576dc02dc5c915672140037f1112c925b7b1e9dc80605c147afeb75010c27ed2", kill_on_drop: false }`
[INFO] [stdout] 576dc02dc5c915672140037f1112c925b7b1e9dc80605c147afeb75010c27ed2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46d1ccf3ac36de9131853c861c0a4be1a80508755f072b780c59f36a2f7622bc
[INFO] running `Command { std: "docker" "start" "-a" "46d1ccf3ac36de9131853c861c0a4be1a80508755f072b780c59f36a2f7622bc", 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]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling pin-project-lite v0.2.6
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling futures-core v0.3.13
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling futures-sink v0.3.13
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-io v0.3.13
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling futures-task v0.3.13
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling async-trait v0.1.48
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling tokio v1.4.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling futures-channel v0.3.13
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling mio v0.7.11
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling simplelog v0.10.0
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.13
[INFO] [stderr]    Compiling pin-project-internal v1.0.6
[INFO] [stderr]    Compiling futures-util v0.3.13
[INFO] [stderr]    Compiling pin-project v1.0.6
[INFO] [stderr]    Compiling futures-executor v0.3.13
[INFO] [stderr]    Compiling futures v0.3.13
[INFO] [stderr]    Compiling tokio-util v0.6.5
[INFO] [stderr]    Compiling tokio-retry v0.3.0
[INFO] [stderr]    Compiling tokio-stream v0.1.5
[INFO] [stderr]    Compiling bincode v1.3.2
[INFO] [stderr]    Compiling ruft v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `last_id`
[INFO] [stdout]    --> src/rpc.rs:512:43
[INFO] [stdout]     |
[INFO] [stdout] 512 |         RpcMessage::RequestVote(term, id, last_id, last_log) => {
[INFO] [stdout]     |                                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_id`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_log`
[INFO] [stdout]    --> src/rpc.rs:512:52
[INFO] [stdout]     |
[INFO] [stdout] 512 |         RpcMessage::RequestVote(term, id, last_id, last_log) => {
[INFO] [stdout]     |                                                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_log`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `success`
[INFO] [stdout]    --> src/rpc.rs:351:69
[INFO] [stdout]     |
[INFO] [stdout] 351 |                         if let RpcMessage::AppendEntriesReply(term, success) = re {
[INFO] [stdout]     |                                                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_success`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `term`
[INFO] [stdout]   --> src/rpc.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         term: i32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `command`
[INFO] [stdout]   --> src/rpc.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         command: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peers_number`
[INFO] [stdout]    --> src/rpc.rs:248:12
[INFO] [stdout]     |
[INFO] [stdout] 248 |     pub fn peers_number(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: generator cannot be sent between threads safely
[INFO] [stdout]    --> src/main.rs:14:5
[INFO] [stdout]     |
[INFO] [stdout] 14  |     tokio::spawn(async {
[INFO] [stdout]     |     ^^^^^^^^^^^^ future created by async block is not `Send`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Sync` is not implemented for `core::fmt::Opaque`
[INFO] [stdout] note: required by a bound in `tokio::spawn`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-1.4.0/src/task/spawn.rs:129:21
[INFO] [stdout]     |
[INFO] [stdout] 129 |         T: Future + Send + 'static,
[INFO] [stdout]     |                     ^^^^ required by this bound in `tokio::spawn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: generator cannot be sent between threads safely
[INFO] [stdout]    --> src/main.rs:23:5
[INFO] [stdout]     |
[INFO] [stdout] 23  |     tokio::spawn(async {
[INFO] [stdout]     |     ^^^^^^^^^^^^ future created by async block is not `Send`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Sync` is not implemented for `core::fmt::Opaque`
[INFO] [stdout] note: required by a bound in `tokio::spawn`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-1.4.0/src/task/spawn.rs:129:21
[INFO] [stdout]     |
[INFO] [stdout] 129 |         T: Future + Send + 'static,
[INFO] [stdout]     |                     ^^^^ required by this bound in `tokio::spawn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ruft` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "46d1ccf3ac36de9131853c861c0a4be1a80508755f072b780c59f36a2f7622bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46d1ccf3ac36de9131853c861c0a4be1a80508755f072b780c59f36a2f7622bc", kill_on_drop: false }`
[INFO] [stdout] 46d1ccf3ac36de9131853c861c0a4be1a80508755f072b780c59f36a2f7622bc