[INFO] fetching crate eosio-chaintester 0.2.3...
[INFO] checking eosio-chaintester-0.2.3 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate eosio-chaintester 0.2.3 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate eosio-chaintester 0.2.3 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate eosio-chaintester 0.2.3
[INFO] finished tweaking crates.io crate eosio-chaintester 0.2.3
[INFO] tweaked toml for crates.io crate eosio-chaintester 0.2.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thrift v0.16.0
[INFO] [stderr]   Downloaded ordered-float v1.1.1
[INFO] [stderr]   Downloaded better-panic v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 81ca8537563142da7f2494e45bcaeeb6ee221189ef44982da0bccebf0f964edd
[INFO] running `Command { std: "docker" "start" "-a" "81ca8537563142da7f2494e45bcaeeb6ee221189ef44982da0bccebf0f964edd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81ca8537563142da7f2494e45bcaeeb6ee221189ef44982da0bccebf0f964edd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81ca8537563142da7f2494e45bcaeeb6ee221189ef44982da0bccebf0f964edd", kill_on_drop: false }`
[INFO] [stdout] 81ca8537563142da7f2494e45bcaeeb6ee221189ef44982da0bccebf0f964edd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6d941f17bc9c6e91190ce073c7470c1453f3b1556401527b0428747829ee8df
[INFO] running `Command { std: "docker" "start" "-a" "f6d941f17bc9c6e91190ce073c7470c1453f3b1556401527b0428747829ee8df", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking integer-encoding v3.0.4
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking thrift v0.16.0
[INFO] [stderr]     Checking backtrace v0.3.69
[INFO] [stderr]     Checking better-panic v0.3.0
[INFO] [stderr]     Checking eosio-chaintester v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/client.rs:21:20
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::convert::{From, Into};
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/client.rs:21:26
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::convert::{From, Into};
[INFO] [stdout]    |                          ^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/client.rs:21:20
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::convert::{From, Into};
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/client.rs:21:26
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::convert::{From, Into};
[INFO] [stdout]    |                          ^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/client.rs:252:13
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let _ = get_vm_api_client(); //init vm api client
[INFO] [stdout]     |             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let _unused = get_vm_api_client(); //init vm api client
[INFO] [stdout]     |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 252 |         drop(get_vm_api_client()); //init vm api client
[INFO] [stdout]     |         ~~~~~                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/client.rs:255:13
[INFO] [stdout]     |
[INFO] [stdout] 255 |         let _= crate::server::get_apply_request_server(); //init apply request server
[INFO] [stdout]     |             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 255 |         let _unused= crate::server::get_apply_request_server(); //init apply request server
[INFO] [stdout]     |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 255 |         drop(crate::server::get_apply_request_server()); //init apply request server
[INFO] [stdout]     |         ~~~~~                                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/client.rs:252:13
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let _ = get_vm_api_client(); //init vm api client
[INFO] [stdout]     |             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let _unused = get_vm_api_client(); //init vm api client
[INFO] [stdout]     |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 252 |         drop(get_vm_api_client()); //init vm api client
[INFO] [stdout]     |         ~~~~~                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/client.rs:255:13
[INFO] [stdout]     |
[INFO] [stdout] 255 |         let _= crate::server::get_apply_request_server(); //init apply request server
[INFO] [stdout]     |             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 255 |         let _unused= crate::server::get_apply_request_server(); //init apply request server
[INFO] [stdout]     |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 255 |         drop(crate::server::get_apply_request_server()); //init apply request server
[INFO] [stdout]     |         ~~~~~                                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `eosio-chaintester` (lib test) due to 3 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `eosio-chaintester` (lib) due to 3 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f6d941f17bc9c6e91190ce073c7470c1453f3b1556401527b0428747829ee8df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6d941f17bc9c6e91190ce073c7470c1453f3b1556401527b0428747829ee8df", kill_on_drop: false }`
[INFO] [stdout] f6d941f17bc9c6e91190ce073c7470c1453f3b1556401527b0428747829ee8df
[INFO] checking eosio-chaintester-0.2.3 against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] extracting crate eosio-chaintester 0.2.3 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate eosio-chaintester 0.2.3 on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate eosio-chaintester 0.2.3
[INFO] finished tweaking crates.io crate eosio-chaintester 0.2.3
[INFO] tweaked toml for crates.io crate eosio-chaintester 0.2.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbdc4db0c8afe7d8cbf2d49b8f073dfdabaa74c43006ad88ca76f9735ce3abde
[INFO] running `Command { std: "docker" "start" "-a" "fbdc4db0c8afe7d8cbf2d49b8f073dfdabaa74c43006ad88ca76f9735ce3abde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbdc4db0c8afe7d8cbf2d49b8f073dfdabaa74c43006ad88ca76f9735ce3abde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbdc4db0c8afe7d8cbf2d49b8f073dfdabaa74c43006ad88ca76f9735ce3abde", kill_on_drop: false }`
[INFO] [stdout] fbdc4db0c8afe7d8cbf2d49b8f073dfdabaa74c43006ad88ca76f9735ce3abde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb4290c4732d286d364fe42ac93360100c2f15ff890809dec37825f8d4991dc9
[INFO] running `Command { std: "docker" "start" "-a" "bb4290c4732d286d364fe42ac93360100c2f15ff890809dec37825f8d4991dc9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking integer-encoding v3.0.4
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking thrift v0.16.0
[INFO] [stderr]     Checking backtrace v0.3.69
[INFO] [stderr]     Checking better-panic v0.3.0
[INFO] [stderr]     Checking eosio-chaintester v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/client.rs:21:20
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::convert::{From, Into};
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/client.rs:21:26
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::convert::{From, Into};
[INFO] [stdout]    |                          ^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/client.rs:21:20
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::convert::{From, Into};
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/client.rs:21:26
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::convert::{From, Into};
[INFO] [stdout]    |                          ^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/client.rs:252:13
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let _ = get_vm_api_client(); //init vm api client
[INFO] [stdout]     |             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let _unused = get_vm_api_client(); //init vm api client
[INFO] [stdout]     |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 252 |         drop(get_vm_api_client()); //init vm api client
[INFO] [stdout]     |         ~~~~~                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/client.rs:255:13
[INFO] [stdout]     |
[INFO] [stdout] 255 |         let _= crate::server::get_apply_request_server(); //init apply request server
[INFO] [stdout]     |             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 255 |         let _unused= crate::server::get_apply_request_server(); //init apply request server
[INFO] [stdout]     |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 255 |         drop(crate::server::get_apply_request_server()); //init apply request server
[INFO] [stdout]     |         ~~~~~                                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/client.rs:252:13
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let _ = get_vm_api_client(); //init vm api client
[INFO] [stdout]     |             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let _unused = get_vm_api_client(); //init vm api client
[INFO] [stdout]     |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 252 |         drop(get_vm_api_client()); //init vm api client
[INFO] [stdout]     |         ~~~~~                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/client.rs:255:13
[INFO] [stdout]     |
[INFO] [stdout] 255 |         let _= crate::server::get_apply_request_server(); //init apply request server
[INFO] [stdout]     |             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 255 |         let _unused= crate::server::get_apply_request_server(); //init apply request server
[INFO] [stdout]     |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 255 |         drop(crate::server::get_apply_request_server()); //init apply request server
[INFO] [stdout]     |         ~~~~~                                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `eosio-chaintester` (lib test) due to 3 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `eosio-chaintester` (lib) due to 3 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "bb4290c4732d286d364fe42ac93360100c2f15ff890809dec37825f8d4991dc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb4290c4732d286d364fe42ac93360100c2f15ff890809dec37825f8d4991dc9", kill_on_drop: false }`
[INFO] [stdout] bb4290c4732d286d364fe42ac93360100c2f15ff890809dec37825f8d4991dc9
