[INFO] cloning repository https://github.com/JacobSandin/improxy-js
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JacobSandin/improxy-js" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobSandin%2Fimproxy-js", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobSandin%2Fimproxy-js'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2164607bfacc15c7ebec3865eab23a3f0e09625
[INFO] checking JacobSandin/improxy-js against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobSandin%2Fimproxy-js" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/JacobSandin/improxy-js
[INFO] finished tweaking git repo https://github.com/JacobSandin/improxy-js
[INFO] tweaked toml for git repo https://github.com/JacobSandin/improxy-js written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/JacobSandin/improxy-js on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "671a4167f45e4b9861075f8ec04fa71c07f8bc69196570b50e4dfc22351094da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "671a4167f45e4b9861075f8ec04fa71c07f8bc69196570b50e4dfc22351094da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "671a4167f45e4b9861075f8ec04fa71c07f8bc69196570b50e4dfc22351094da", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:492:37
[INFO] [stdout]     |
[INFO] [stdout] 492 |                   self.forward_host = self
[INFO] [stdout]     |  _____________________________________^
[INFO] [stdout] 493 | |                     .forward_lookup
[INFO] [stdout] 494 | |                     .get(&self.request_host)
[INFO] [stdout] 495 | |                     .unwrap_or(&dotenv::var("DEFAULT_FORWARD").unwrap_or(String::from("")))
[INFO] [stdout] 496 | |                     //                    .unwrap_or(&String::from("192.168.96.54:80"))
[INFO] [stdout] 497 | |                     .parse()
[INFO] [stdout]     | |____________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:803:17
[INFO] [stdout]     |
[INFO] [stdout] 803 |                 &self.send_to_client.push_back(self.buf_client.clone());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 803 |                 let _ = &self.send_to_client.push_back(self.buf_client.clone());
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:804:17
[INFO] [stdout]     |
[INFO] [stdout] 804 |                 &self.buf_client.clear();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 804 |                 let _ = &self.buf_client.clear();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:889:25
[INFO] [stdout]     |
[INFO] [stdout] 889 |                         &self.buf_forward.clear();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 889 |                         let _ = &self.buf_forward.clear();
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:891:25
[INFO] [stdout]     |
[INFO] [stdout] 891 |                         &self.send_to_farward.push_back(self.buf_forward.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 891 |                         let _ = &self.send_to_farward.push_back(self.buf_forward.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:892:25
[INFO] [stdout]     |
[INFO] [stdout] 892 |                         &self.buf_forward.clear();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 892 |                         let _ = &self.buf_forward.clear();
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:915:25
[INFO] [stdout]     |
[INFO] [stdout] 915 |                         &self.send_to_farward.push_back(self.buf_forward.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 915 |                         let _ = &self.send_to_farward.push_back(self.buf_forward.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:916:25
[INFO] [stdout]     |
[INFO] [stdout] 916 |                         &self.buf_forward.clear();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 916 |                         let _ = &self.buf_forward.clear();
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:919:25
[INFO] [stdout]     |
[INFO] [stdout] 919 |                         &self.buf_forward.clear();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 919 |                         let _ = &self.buf_forward.clear();
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]     --> sni_proxy/src/connection_source.rs:1019:13
[INFO] [stdout]      |
[INFO] [stdout] 1019 |             drop(self.forward_stream.as_ref().unwrap());
[INFO] [stdout]      |             ^^^^^-------------------------------------^
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  argument has type `&mio::net::TcpStream`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1019 -             drop(self.forward_stream.as_ref().unwrap());
[INFO] [stdout] 1019 +             let _ = self.forward_stream.as_ref().unwrap();
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]     --> sni_proxy/src/connection_source.rs:1022:9
[INFO] [stdout]      |
[INFO] [stdout] 1022 |         drop(&self.server_stream);
[INFO] [stdout]      |         ^^^^^-------------------^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              argument has type `&mio::net::TcpStream`
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1022 -         drop(&self.server_stream);
[INFO] [stdout] 1022 +         let _ = &self.server_stream;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:492:37
[INFO] [stdout]     |
[INFO] [stdout] 492 |                   self.forward_host = self
[INFO] [stdout]     |  _____________________________________^
[INFO] [stdout] 493 | |                     .forward_lookup
[INFO] [stdout] 494 | |                     .get(&self.request_host)
[INFO] [stdout] 495 | |                     .unwrap_or(&dotenv::var("DEFAULT_FORWARD").unwrap_or(String::from("")))
[INFO] [stdout] 496 | |                     //                    .unwrap_or(&String::from("192.168.96.54:80"))
[INFO] [stdout] 497 | |                     .parse()
[INFO] [stdout]     | |____________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:803:17
[INFO] [stdout]     |
[INFO] [stdout] 803 |                 &self.send_to_client.push_back(self.buf_client.clone());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 803 |                 let _ = &self.send_to_client.push_back(self.buf_client.clone());
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:804:17
[INFO] [stdout]     |
[INFO] [stdout] 804 |                 &self.buf_client.clear();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 804 |                 let _ = &self.buf_client.clear();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:889:25
[INFO] [stdout]     |
[INFO] [stdout] 889 |                         &self.buf_forward.clear();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 889 |                         let _ = &self.buf_forward.clear();
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:891:25
[INFO] [stdout]     |
[INFO] [stdout] 891 |                         &self.send_to_farward.push_back(self.buf_forward.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 891 |                         let _ = &self.send_to_farward.push_back(self.buf_forward.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:892:25
[INFO] [stdout]     |
[INFO] [stdout] 892 |                         &self.buf_forward.clear();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 892 |                         let _ = &self.buf_forward.clear();
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:915:25
[INFO] [stdout]     |
[INFO] [stdout] 915 |                         &self.send_to_farward.push_back(self.buf_forward.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 915 |                         let _ = &self.send_to_farward.push_back(self.buf_forward.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:916:25
[INFO] [stdout]     |
[INFO] [stdout] 916 |                         &self.buf_forward.clear();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 916 |                         let _ = &self.buf_forward.clear();
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> sni_proxy/src/connection_source.rs:919:25
[INFO] [stdout]     |
[INFO] [stdout] 919 |                         &self.buf_forward.clear();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 919 |                         let _ = &self.buf_forward.clear();
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]     --> sni_proxy/src/connection_source.rs:1019:13
[INFO] [stdout]      |
[INFO] [stdout] 1019 |             drop(self.forward_stream.as_ref().unwrap());
[INFO] [stdout]      |             ^^^^^-------------------------------------^
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  argument has type `&mio::net::TcpStream`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1019 -             drop(self.forward_stream.as_ref().unwrap());
[INFO] [stdout] 1019 +             let _ = self.forward_stream.as_ref().unwrap();
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]     --> sni_proxy/src/connection_source.rs:1022:9
[INFO] [stdout]      |
[INFO] [stdout] 1022 |         drop(&self.server_stream);
[INFO] [stdout]      |         ^^^^^-------------------^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              argument has type `&mio::net::TcpStream`
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]      |
[INFO] [stdout] 1022 -         drop(&self.server_stream);
[INFO] [stdout] 1022 +         let _ = &self.server_stream;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sni_proxy` (bin "sni_proxy" test) due to 1 previous error; 10 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `sni_proxy` (bin "sni_proxy") due to 1 previous error; 10 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a9df6d353c789694195434b4398d0c5391e5598b2df06fc6e522a64a7b2982fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9df6d353c789694195434b4398d0c5391e5598b2df06fc6e522a64a7b2982fc", kill_on_drop: false }`
[INFO] [stdout] a9df6d353c789694195434b4398d0c5391e5598b2df06fc6e522a64a7b2982fc
