[INFO] cloning repository https://github.com/Leonti/rust-socket-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Leonti/rust-socket-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeonti%2Frust-socket-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeonti%2Frust-socket-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4fa0e7016aff899624955b07f456c2ab7c53ae15
[INFO] checking Leonti/rust-socket-server against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeonti%2Frust-socket-server" "/workspace/builds/worker-85/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-85/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Leonti/rust-socket-server on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-85/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/Leonti/rust-socket-server
[INFO] finished tweaking git repo https://github.com/Leonti/rust-socket-server
[INFO] tweaked toml for git repo https://github.com/Leonti/rust-socket-server written to /workspace/builds/worker-85/source/Cargo.toml
[INFO] crate git repo https://github.com/Leonti/rust-socket-server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]   Downloaded rplidar_drv v0.6.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2c078bbe1e125505990db079d21798f50d536dc3115a01d9ef3b41970471f19
[INFO] running `Command { std: "docker" "start" "-a" "b2c078bbe1e125505990db079d21798f50d536dc3115a01d9ef3b41970471f19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2c078bbe1e125505990db079d21798f50d536dc3115a01d9ef3b41970471f19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2c078bbe1e125505990db079d21798f50d536dc3115a01d9ef3b41970471f19", kill_on_drop: false }`
[INFO] [stdout] b2c078bbe1e125505990db079d21798f50d536dc3115a01d9ef3b41970471f19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 343061a6af5a8227ac0d204140ee2574820b06428d1a127cdac11c70aba24731
[INFO] running `Command { std: "docker" "start" "-a" "343061a6af5a8227ac0d204140ee2574820b06428d1a127cdac11c70aba24731", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]     Checking futures v0.1.25
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking slab v0.4.1
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[INFO] [stderr]    Compiling ryu v0.2.6
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[INFO] [stderr]    Compiling proc-macro2 v0.4.21
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
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[INFO] [stderr]     Checking lock_api v0.1.4
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[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking rplidar_drv v0.6.0
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
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[INFO] [stderr]     Checking input_buffer v0.2.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.8
[INFO] [stderr]     Checking tungstenite v0.6.1
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking spidev v0.3.0
[INFO] [stderr]     Checking mcp3008 v1.0.0
[INFO] [stderr]     Checking tokio-reactor v0.1.6
[INFO] [stderr]     Checking tokio-uds v0.2.3
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking serialport v3.3.0
[INFO] [stderr]     Checking tokio v0.1.11
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking mio-serial v3.3.0
[INFO] [stderr]     Checking tokio-dns-unofficial v0.3.1
[INFO] [stderr]     Checking tokio-serial v3.3.0
[INFO] [stderr]     Checking sysfs_gpio v0.5.3
[INFO] [stderr]     Checking tokio-tungstenite v0.6.0
[INFO] [stderr]    Compiling cargo_metadata v0.5.8
[INFO] [stderr]    Compiling skeptic v0.13.3
[INFO] [stderr]    Compiling i2cdev v0.3.2
[INFO] [stderr]     Checking rover_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sensors/arduino.rs:160:14
[INFO] [stdout]     |
[INFO] [stdout] 160 |     ) -> Box<Future<Item = (), Error = ()> + Send> {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = (), Error = ()> + Send`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:4:9
[INFO] [stdout]     |
[INFO] [stdout] 4   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` implied by `#[warn(warnings)]`
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sensors/arduino.rs:160:14
[INFO] [stdout]     |
[INFO] [stdout] 160 |     ) -> Box<Future<Item = (), Error = ()> + Send> {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = (), Error = ()> + Send`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:4:9
[INFO] [stdout]     |
[INFO] [stdout] 4   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` implied by `#[warn(warnings)]`
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sensors/arduino.rs:204:41
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn print_not_connected(self) -> Box<Future<Item = (), Error = ()> + Send> {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = (), Error = ()> + Send`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sensors/arduino.rs:204:41
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn print_not_connected(self) -> Box<Future<Item = (), Error = ()> + Send> {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = (), Error = ()> + Send`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/motor_handler.rs:192:40
[INFO] [stdout]     |
[INFO] [stdout] 192 |         .expect("Time went backwards");;
[INFO] [stdout]     |                                        ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:4:9
[INFO] [stdout]     |
[INFO] [stdout] 4   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/motor_handler.rs:192:40
[INFO] [stdout]     |
[INFO] [stdout] 192 |         .expect("Time went backwards");;
[INFO] [stdout]     |                                        ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:4:9
[INFO] [stdout]     |
[INFO] [stdout] 4   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:226:10
[INFO] [stdout]     |
[INFO] [stdout] 226 | ) -> Box<Future<Item = (), Error = io::Error> + Send> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = (), Error = io::Error> + Send`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:226:10
[INFO] [stdout]     |
[INFO] [stdout] 226 | ) -> Box<Future<Item = (), Error = io::Error> + Send> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = (), Error = io::Error> + Send`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Sink` is imported redundantly
[INFO] [stdout]    --> src/main.rs:260:21
[INFO] [stdout]     |
[INFO] [stdout] 18  | use tokio::prelude::*;
[INFO] [stdout]     |     ----------------- the item `Sink` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 260 |                 use futures::Sink;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:4:9
[INFO] [stdout]     |
[INFO] [stdout] 4   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_imports)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Sink` is imported redundantly
[INFO] [stdout]    --> src/main.rs:260:21
[INFO] [stdout]     |
[INFO] [stdout] 18  | use tokio::prelude::*;
[INFO] [stdout]     |     ----------------- the item `Sink` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 260 |                 use futures::Sink;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:4:9
[INFO] [stdout]     |
[INFO] [stdout] 4   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_imports)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0517]: attribute should be applied to an enum
[INFO] [stdout]   --> src/sensors/event.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 88 |       #[repr(u128)]
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 89 | /     pub fn new(event: Event) -> TimedEvent {
[INFO] [stdout] 90 | |         let start = SystemTime::now();
[INFO] [stdout] 91 | |         let since_the_epoch = start
[INFO] [stdout] 92 | |             .duration_since(UNIX_EPOCH)
[INFO] [stdout] ...  |
[INFO] [stdout] 97 | |         TimedEvent { event, time }
[INFO] [stdout] 98 | |     }
[INFO] [stdout]    | |_____- not an enum
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0517]: attribute should be applied to an enum
[INFO] [stdout]   --> src/sensors/event.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 88 |       #[repr(u128)]
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 89 | /     pub fn new(event: Event) -> TimedEvent {
[INFO] [stdout] 90 | |         let start = SystemTime::now();
[INFO] [stdout] 91 | |         let since_the_epoch = start
[INFO] [stdout] 92 | |             .duration_since(UNIX_EPOCH)
[INFO] [stdout] ...  |
[INFO] [stdout] 97 | |         TimedEvent { event, time }
[INFO] [stdout] 98 | |     }
[INFO] [stdout]    | |_____- not an enum
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0517`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0517`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rover_server` due to 2 previous errors; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "343061a6af5a8227ac0d204140ee2574820b06428d1a127cdac11c70aba24731", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "343061a6af5a8227ac0d204140ee2574820b06428d1a127cdac11c70aba24731", kill_on_drop: false }`
[INFO] [stdout] 343061a6af5a8227ac0d204140ee2574820b06428d1a127cdac11c70aba24731
