[INFO] crate mech-server 0.0.2 is already in cache
[INFO] extracting crate mech-server 0.0.2 into work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/mech-server/0.0.2
[INFO] extracting crate mech-server 0.0.2 into work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/mech-server/0.0.2
[INFO] validating manifest of mech-server-0.0.2 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mech-server-0.0.2 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mech-server-0.0.2
[INFO] finished frobbing mech-server-0.0.2
[INFO] frobbed toml for mech-server-0.0.2 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/mech-server/0.0.2/Cargo.toml
[INFO] started frobbing mech-server-0.0.2
[INFO] finished frobbing mech-server-0.0.2
[INFO] frobbed toml for mech-server-0.0.2 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/mech-server/0.0.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mech-server-0.0.2 against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-7/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/mech-server/0.0.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c473dc9b5cbe434917f6610eb32d62b9f118bfdd73e5a9d4dded68c388026639
[INFO] running `"docker" "start" "-a" "c473dc9b5cbe434917f6610eb32d62b9f118bfdd73e5a9d4dded68c388026639"`
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]     Checking hashbrown v0.4.0
[INFO] [stderr]     Checking sequence_trie v0.3.6
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking term-painter v0.2.4
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]     Checking ws v0.7.9
[INFO] [stderr]     Checking num-iter v0.1.39
[INFO] [stderr]     Checking num-rational v0.2.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking mech-core v0.0.2
[INFO] [stderr]     Checking bincode v0.8.0
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking mech-syntax v0.0.2
[INFO] [stderr]     Checking mech-program v0.0.2
[INFO] [stderr]     Checking mech-server v0.0.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `PathBuf`
[INFO] [stderr]   --> src/lib.rs:12:23
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::path::{Path, PathBuf};
[INFO] [stderr]    |                       ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Sender`, `self`
[INFO] [stderr]   --> src/lib.rs:13:23
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::sync::mpsc::{self, Sender};
[INFO] [stderr]    |                       ^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `App`, `Arg`
[INFO] [stderr]   --> src/lib.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 | use clap::{Arg, App};
[INFO] [stderr]    |            ^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `CloseCode`, `Handler`, `Handshake`, `Message`, `Sender as WSSender`
[INFO] [stderr]   --> src/lib.rs:19:18
[INFO] [stderr]    |
[INFO] [stderr] 19 | use ws::{listen, Message, Sender as WSSender, Handler, CloseCode, Handshake};
[INFO] [stderr]    |                  ^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]   --> src/lib.rs:25:18
[INFO] [stderr]    |
[INFO] [stderr] 25 | use serde_json::{Error};
[INFO] [stderr]    |                  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Arc`, `Mutex`
[INFO] [stderr]   --> src/lib.rs:39:17
[INFO] [stderr]    |
[INFO] [stderr] 39 | use std::sync::{Arc, Mutex};
[INFO] [stderr]    |                 ^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]   --> src/lib.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 | use std::ops::Deref;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]   --> src/lib.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 | use std::collections::HashSet;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `File`, `self`
[INFO] [stderr]   --> src/lib.rs:42:15
[INFO] [stderr]    |
[INFO] [stderr] 42 | use std::fs::{self, File};
[INFO] [stderr]    |               ^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]   --> src/lib.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 | use std::io::Read;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Change`, `Core`
[INFO] [stderr]   --> src/lib.rs:52:17
[INFO] [stderr]    |
[INFO] [stderr] 52 | use mech_core::{Core, Change, Transaction};
[INFO] [stderr]    |                 ^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `mech_core::Value`
[INFO] [stderr]   --> src/lib.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 | use mech_core::Value;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Hasher`, `TableIndex`
[INFO] [stderr]   --> src/lib.rs:54:17
[INFO] [stderr]    |
[INFO] [stderr] 54 | use mech_core::{TableIndex, Hasher};
[INFO] [stderr]    |                 ^^^^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Block`, `Constraint`
[INFO] [stderr]   --> src/lib.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 55 | use mech_core::{Block, Constraint};
[INFO] [stderr]    |                 ^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Comparator`, `Function`
[INFO] [stderr]   --> src/lib.rs:56:17
[INFO] [stderr]    |
[INFO] [stderr] 56 | use mech_core::{Function, Comparator};
[INFO] [stderr]    |                 ^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ProgramRunner`, `RunLoopMessage`, `RunLoop`
[INFO] [stderr]   --> src/lib.rs:57:20
[INFO] [stderr]    |
[INFO] [stderr] 57 | use mech_program::{ProgramRunner, RunLoop, RunLoopMessage};
[INFO] [stderr]    |                    ^^^^^^^^^^^^^  ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stderr]   --> src/lib.rs:62:12
[INFO] [stderr]    |
[INFO] [stderr] 62 | use rand::{Rng, thread_rng};
[INFO] [stderr]    |            ^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `walkdir::WalkDir`
[INFO] [stderr]   --> src/lib.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 | use walkdir::WalkDir;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `listen`
[INFO] [stderr]  --> src/client.rs:5:10
[INFO] [stderr]   |
[INFO] [stderr] 5 | use ws::{listen, Message, Sender as WSSender, Handler, CloseCode, Handshake};
[INFO] [stderr]   |          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Core`
[INFO] [stderr]   --> src/client.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 | use mech_core::{Core, Change, Transaction, Value, Index, ErrorType};
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PathBuf`
[INFO] [stderr]   --> src/lib.rs:12:23
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::path::{Path, PathBuf};
[INFO] [stderr]    |                       ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Sender`, `self`
[INFO] [stderr]   --> src/lib.rs:13:23
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::sync::mpsc::{self, Sender};
[INFO] [stderr]    |                       ^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `App`, `Arg`
[INFO] [stderr]   --> src/lib.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 | use clap::{Arg, App};
[INFO] [stderr]    |            ^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `CloseCode`, `Handler`, `Handshake`, `Message`, `Sender as WSSender`
[INFO] [stderr]   --> src/lib.rs:19:18
[INFO] [stderr]    |
[INFO] [stderr] 19 | use ws::{listen, Message, Sender as WSSender, Handler, CloseCode, Handshake};
[INFO] [stderr]    |                  ^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]   --> src/lib.rs:25:18
[INFO] [stderr]    |
[INFO] [stderr] 25 | use serde_json::{Error};
[INFO] [stderr]    |                  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Arc`, `Mutex`
[INFO] [stderr]   --> src/lib.rs:39:17
[INFO] [stderr]    |
[INFO] [stderr] 39 | use std::sync::{Arc, Mutex};
[INFO] [stderr]    |                 ^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]   --> src/lib.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 | use std::ops::Deref;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]   --> src/lib.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 | use std::collections::HashSet;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `File`, `self`
[INFO] [stderr]   --> src/lib.rs:42:15
[INFO] [stderr]    |
[INFO] [stderr] 42 | use std::fs::{self, File};
[INFO] [stderr]    |               ^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]   --> src/lib.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 | use std::io::Read;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Change`, `Core`
[INFO] [stderr]   --> src/lib.rs:52:17
[INFO] [stderr]    |
[INFO] [stderr] 52 | use mech_core::{Core, Change, Transaction};
[INFO] [stderr]    |                 ^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `mech_core::Value`
[INFO] [stderr]   --> src/lib.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 | use mech_core::Value;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Hasher`, `TableIndex`
[INFO] [stderr]   --> src/lib.rs:54:17
[INFO] [stderr]    |
[INFO] [stderr] 54 | use mech_core::{TableIndex, Hasher};
[INFO] [stderr]    |                 ^^^^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Block`, `Constraint`
[INFO] [stderr]   --> src/lib.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 55 | use mech_core::{Block, Constraint};
[INFO] [stderr]    |                 ^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Comparator`, `Function`
[INFO] [stderr]   --> src/lib.rs:56:17
[INFO] [stderr]    |
[INFO] [stderr] 56 | use mech_core::{Function, Comparator};
[INFO] [stderr]    |                 ^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ProgramRunner`, `RunLoopMessage`, `RunLoop`
[INFO] [stderr]   --> src/lib.rs:57:20
[INFO] [stderr]    |
[INFO] [stderr] 57 | use mech_program::{ProgramRunner, RunLoop, RunLoopMessage};
[INFO] [stderr]    |                    ^^^^^^^^^^^^^  ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stderr]   --> src/lib.rs:62:12
[INFO] [stderr]    |
[INFO] [stderr] 62 | use rand::{Rng, thread_rng};
[INFO] [stderr]    |            ^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `walkdir::WalkDir`
[INFO] [stderr]   --> src/lib.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 | use walkdir::WalkDir;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `listen`
[INFO] [stderr]  --> src/client.rs:5:10
[INFO] [stderr]   |
[INFO] [stderr] 5 | use ws::{listen, Message, Sender as WSSender, Handler, CloseCode, Handshake};
[INFO] [stderr]   |          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Core`
[INFO] [stderr]   --> src/client.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 | use mech_core::{Core, Change, Transaction, Value, Index, ErrorType};
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outgoing`
[INFO] [stderr]   --> src/client.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let outgoing = runner.program.outgoing.clone();
[INFO] [stderr]    |         ^^^^^^^^ help: consider prefixing with an underscore: `_outgoing`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ix`
[INFO] [stderr]   --> src/client.rs:78:14
[INFO] [stderr]    |
[INFO] [stderr] 78 |         for (ix,(text, constraints)) in block.constraints.iter().enumerate() {
[INFO] [stderr]    |              ^^ help: consider prefixing with an underscore: `_ix`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `persistence_path`
[INFO] [stderr]   --> src/client.rs:30:88
[INFO] [stderr]    |
[INFO] [stderr] 30 |   pub fn new(client_name: &str, out: Option<WSSender>, mech_paths: Option<&Vec<&str>>, persistence_path: Option<&str>) -> ClientHandler {
[INFO] [stderr]    |                                                                                        ^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_persistence_path`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handshake`
[INFO] [stderr]    --> src/client.rs:101:25
[INFO] [stderr]     |
[INFO] [stderr] 101 |   fn on_open(&mut self, handshake: Handshake) -> Result<(),ws::Error> {
[INFO] [stderr]     |                         ^^^^^^^^^ help: consider prefixing with an underscore: `_handshake`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outgoing`
[INFO] [stderr]   --> src/client.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let outgoing = runner.program.outgoing.clone();
[INFO] [stderr]    |         ^^^^^^^^ help: consider prefixing with an underscore: `_outgoing`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ix`
[INFO] [stderr]   --> src/client.rs:78:14
[INFO] [stderr]    |
[INFO] [stderr] 78 |         for (ix,(text, constraints)) in block.constraints.iter().enumerate() {
[INFO] [stderr]    |              ^^ help: consider prefixing with an underscore: `_ix`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `persistence_path`
[INFO] [stderr]   --> src/client.rs:30:88
[INFO] [stderr]    |
[INFO] [stderr] 30 |   pub fn new(client_name: &str, out: Option<WSSender>, mech_paths: Option<&Vec<&str>>, persistence_path: Option<&str>) -> ClientHandler {
[INFO] [stderr]    |                                                                                        ^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_persistence_path`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handshake`
[INFO] [stderr]    --> src/client.rs:101:25
[INFO] [stderr]     |
[INFO] [stderr] 101 |   fn on_open(&mut self, handshake: Handshake) -> Result<(),ws::Error> {
[INFO] [stderr]     |                         ^^^^^^^^^ help: consider prefixing with an underscore: `_handshake`
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | #![feature(extern_prelude)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/client.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/client.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/client.rs:129:13
[INFO] [stderr]     |
[INFO] [stderr] 129 |             self.running.send(RunLoopMessage::Transaction(txn));
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/client.rs:132:13
[INFO] [stderr]     |
[INFO] [stderr] 132 |             self.running.send(RunLoopMessage::Listening(table_ids));
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | #![feature(extern_prelude)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/client.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/client.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/client.rs:129:13
[INFO] [stderr]     |
[INFO] [stderr] 129 |             self.running.send(RunLoopMessage::Transaction(txn));
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/client.rs:132:13
[INFO] [stderr]     |
[INFO] [stderr] 132 |             self.running.send(RunLoopMessage::Listening(table_ids));
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.20s
[INFO] running `"docker" "inspect" "c473dc9b5cbe434917f6610eb32d62b9f118bfdd73e5a9d4dded68c388026639"`
[INFO] running `"docker" "rm" "-f" "c473dc9b5cbe434917f6610eb32d62b9f118bfdd73e5a9d4dded68c388026639"`
[INFO] [stdout] c473dc9b5cbe434917f6610eb32d62b9f118bfdd73e5a9d4dded68c388026639