[INFO] fetching crate eosio-chaintester 0.2.3...
[INFO] checking eosio-chaintester-0.2.3 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate eosio-chaintester 0.2.3 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate eosio-chaintester 0.2.3 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "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-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 64 packages to latest compatible versions
[INFO] [stderr]       Adding addr2line v0.21.0 (latest: v0.22.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding clap v3.2.25 (latest: v4.5.4)
[INFO] [stderr]       Adding clap_lex v0.2.4 (latest: v0.7.0)
[INFO] [stderr]       Adding encode_unicode v0.3.6 (latest: v1.0.0)
[INFO] [stderr]       Adding gimli v0.28.1 (latest: v0.29.0)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.5)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding integer-encoding v3.0.4 (latest: v4.0.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.35.0)
[INFO] [stderr]       Adding ordered-float v1.1.1 (latest: v4.2.0)
[INFO] [stderr]       Adding os_str_bytes v6.6.1 (latest: v7.0.0)
[INFO] [stderr]       Adding strsim v0.10.0 (latest: v0.11.1)
[INFO] [stderr]       Adding thrift v0.16.0 (latest: v0.17.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thrift v0.16.0
[INFO] [stderr]   Downloaded better-panic v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd7ef45ba4581e44b507379fc4221529c6aa11c0d06564fa40fe660ac6943c42
[INFO] running `Command { std: "docker" "start" "-a" "fd7ef45ba4581e44b507379fc4221529c6aa11c0d06564fa40fe660ac6943c42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd7ef45ba4581e44b507379fc4221529c6aa11c0d06564fa40fe660ac6943c42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd7ef45ba4581e44b507379fc4221529c6aa11c0d06564fa40fe660ac6943c42", kill_on_drop: false }`
[INFO] [stdout] fd7ef45ba4581e44b507379fc4221529c6aa11c0d06564fa40fe660ac6943c42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22e8b926c48b6600cc623699d5fac79b602ae5cce8e7460e08fa8cb4f5356313
[INFO] running `Command { std: "docker" "start" "-a" "22e8b926c48b6600cc623699d5fac79b602ae5cce8e7460e08fa8cb4f5356313", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.200
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling serde_json v1.0.116
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking integer-encoding v3.0.4
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking thrift v0.16.0
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking backtrace v0.3.71
[INFO] [stderr]     Checking better-panic v0.3.0
[INFO] [stderr]     Checking eosio-chaintester v0.2.3 (/opt/rustwide/workdir)
[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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `eosio-chaintester` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `eosio-chaintester` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "22e8b926c48b6600cc623699d5fac79b602ae5cce8e7460e08fa8cb4f5356313", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22e8b926c48b6600cc623699d5fac79b602ae5cce8e7460e08fa8cb4f5356313", kill_on_drop: false }`
[INFO] [stdout] 22e8b926c48b6600cc623699d5fac79b602ae5cce8e7460e08fa8cb4f5356313
[INFO] checking eosio-chaintester-0.2.3 against try#9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88 for pr-124157
[INFO] extracting crate eosio-chaintester 0.2.3 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate eosio-chaintester 0.2.3 on toolchain 9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "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-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 64 packages to latest compatible versions
[INFO] [stderr]       Adding addr2line v0.21.0 (latest: v0.22.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding clap v3.2.25 (latest: v4.5.4)
[INFO] [stderr]       Adding clap_lex v0.2.4 (latest: v0.7.0)
[INFO] [stderr]       Adding encode_unicode v0.3.6 (latest: v1.0.0)
[INFO] [stderr]       Adding gimli v0.28.1 (latest: v0.29.0)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.5)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding integer-encoding v3.0.4 (latest: v4.0.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.35.0)
[INFO] [stderr]       Adding ordered-float v1.1.1 (latest: v4.2.0)
[INFO] [stderr]       Adding os_str_bytes v6.6.1 (latest: v7.0.0)
[INFO] [stderr]       Adding strsim v0.10.0 (latest: v0.11.1)
[INFO] [stderr]       Adding thrift v0.16.0 (latest: v0.17.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b4b584930eaa95172c5832242abe0962c0b58f44eedfd87a1d54fc59ded0896
[INFO] running `Command { std: "docker" "start" "-a" "2b4b584930eaa95172c5832242abe0962c0b58f44eedfd87a1d54fc59ded0896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b4b584930eaa95172c5832242abe0962c0b58f44eedfd87a1d54fc59ded0896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b4b584930eaa95172c5832242abe0962c0b58f44eedfd87a1d54fc59ded0896", kill_on_drop: false }`
[INFO] [stdout] 2b4b584930eaa95172c5832242abe0962c0b58f44eedfd87a1d54fc59ded0896
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b83fd785ccff7523d139ffd4936188837eead54a691f4462fc8ec2f4cf25ce54
[INFO] running `Command { std: "docker" "start" "-a" "b83fd785ccff7523d139ffd4936188837eead54a691f4462fc8ec2f4cf25ce54", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling serde v1.0.200
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling serde_json v1.0.116
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking integer-encoding v3.0.4
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking thrift v0.16.0
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking backtrace v0.3.71
[INFO] [stderr]     Checking better-panic v0.3.0
[INFO] [stderr]     Checking eosio-chaintester v0.2.3 (/opt/rustwide/workdir)
[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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `eosio-chaintester` (lib test) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `eosio-chaintester` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "b83fd785ccff7523d139ffd4936188837eead54a691f4462fc8ec2f4cf25ce54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b83fd785ccff7523d139ffd4936188837eead54a691f4462fc8ec2f4cf25ce54", kill_on_drop: false }`
[INFO] [stdout] b83fd785ccff7523d139ffd4936188837eead54a691f4462fc8ec2f4cf25ce54
