[INFO] cloning repository https://github.com/unrealhoang/lspc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/unrealhoang/lspc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funrealhoang%2Flspc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funrealhoang%2Flspc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 20f16af4214bf17e9660f2361e99ddd052fa0599
[INFO] checking unrealhoang/lspc against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funrealhoang%2Flspc" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/unrealhoang/lspc on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/unrealhoang/lspc
[INFO] finished tweaking git repo https://github.com/unrealhoang/lspc
[INFO] tweaked toml for git repo https://github.com/unrealhoang/lspc written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/unrealhoang/lspc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4f1202120ba9c34845cfd7112bdf842ae7b77505b16fb396ac7d01c150ff5d2
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[INFO] running `Command { std: "docker" "inspect" "e4f1202120ba9c34845cfd7112bdf842ae7b77505b16fb396ac7d01c150ff5d2", kill_on_drop: false }`
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[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/lspc/msg.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]   --> src/neovim.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     self,
[INFO] [stdout]    |     ^^^^ the item `serde` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/rpc.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/lspc/msg.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]   --> src/neovim.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     self,
[INFO] [stdout]    |     ^^^^ the item `serde` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Position` is imported redundantly
[INFO] [stdout]     --> src/neovim.rs:1039:21
[INFO] [stdout]      |
[INFO] [stdout] 1038 |     use super::*;
[INFO] [stdout]      |         -------- the item `Position` is already imported here
[INFO] [stdout] 1039 |     use lsp_types::{Position, Range, TextEdit};
[INFO] [stdout]      |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TextEdit` is imported redundantly
[INFO] [stdout]     --> src/neovim.rs:1039:38
[INFO] [stdout]      |
[INFO] [stdout] 1038 |     use super::*;
[INFO] [stdout]      |         -------- the item `TextEdit` is already imported here
[INFO] [stdout] 1039 |     use lsp_types::{Position, Range, TextEdit};
[INFO] [stdout]      |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/rpc.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lspc/msg.rs:97:71
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let msg = from_str(&text).map_err(|e| RpcError::Deserialize(e.description().into()))?;
[INFO] [stdout]    |                                                                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:112:44
[INFO] [stdout]     |
[INFO] [stdout] 112 |         .map_err(|e| RpcError::Serialize(e.description().into()))?;
[INFO] [stdout]     |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:226:28
[INFO] [stdout]     |
[INFO] [stdout] 226 |             .map_err(|e| e.description().to_owned())?;
[INFO] [stdout]     |                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lspc/msg.rs:97:71
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let msg = from_str(&text).map_err(|e| RpcError::Deserialize(e.description().into()))?;
[INFO] [stdout]    |                                                                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:112:44
[INFO] [stdout]     |
[INFO] [stdout] 112 |         .map_err(|e| RpcError::Serialize(e.description().into()))?;
[INFO] [stdout]     |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:254:24
[INFO] [stdout]     |
[INFO] [stdout] 254 |         .map_err(|e| e.description().to_owned())?;
[INFO] [stdout]     |                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:255:52
[INFO] [stdout]     |
[INFO] [stdout] 255 |     let buf = String::from_utf8(buf).map_err(|e| e.description().to_owned())?;
[INFO] [stdout]     |                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:263:40
[INFO] [stdout]     |
[INFO] [stdout] 263 |         .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:265:40
[INFO] [stdout]     |
[INFO] [stdout] 265 |         .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:267:40
[INFO] [stdout]     |
[INFO] [stdout] 267 |         .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:226:28
[INFO] [stdout]     |
[INFO] [stdout] 226 |             .map_err(|e| e.description().to_owned())?;
[INFO] [stdout]     |                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:254:24
[INFO] [stdout]     |
[INFO] [stdout] 254 |         .map_err(|e| e.description().to_owned())?;
[INFO] [stdout]     |                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:255:52
[INFO] [stdout]     |
[INFO] [stdout] 255 |     let buf = String::from_utf8(buf).map_err(|e| e.description().to_owned())?;
[INFO] [stdout]     |                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:263:40
[INFO] [stdout]     |
[INFO] [stdout] 263 |         .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:265:40
[INFO] [stdout]     |
[INFO] [stdout] 265 |         .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:267:40
[INFO] [stdout]     |
[INFO] [stdout] 267 |         .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:735:74
[INFO] [stdout]     |
[INFO] [stdout] 735 |             EditorError::Failed(format!("Failed to encode params: {}", e.description()))
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:745:64
[INFO] [stdout]     |
[INFO] [stdout] 745 |         let value = read_value(r).map_err(|e| RpcError::Read(e.description().into()))?;
[INFO] [stdout]     |                                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:748:67
[INFO] [stdout]     |
[INFO] [stdout] 748 |             from_value(value).map_err(|e| RpcError::Deserialize(e.description().into()))?;
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:757:70
[INFO] [stdout]     |
[INFO] [stdout] 757 |         let value = to_value(self).map_err(|e| RpcError::Serialize(e.description().into()))?;
[INFO] [stdout]     |                                                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:758:62
[INFO] [stdout]     |
[INFO] [stdout] 758 |         write_value(w, &value).map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:760:44
[INFO] [stdout]     |
[INFO] [stdout] 760 |             .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:735:74
[INFO] [stdout]     |
[INFO] [stdout] 735 |             EditorError::Failed(format!("Failed to encode params: {}", e.description()))
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:745:64
[INFO] [stdout]     |
[INFO] [stdout] 745 |         let value = read_value(r).map_err(|e| RpcError::Read(e.description().into()))?;
[INFO] [stdout]     |                                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:748:67
[INFO] [stdout]     |
[INFO] [stdout] 748 |             from_value(value).map_err(|e| RpcError::Deserialize(e.description().into()))?;
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:757:70
[INFO] [stdout]     |
[INFO] [stdout] 757 |         let value = to_value(self).map_err(|e| RpcError::Serialize(e.description().into()))?;
[INFO] [stdout]     |                                                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:758:62
[INFO] [stdout]     |
[INFO] [stdout] 758 |         write_value(w, &value).map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:760:44
[INFO] [stdout]     |
[INFO] [stdout] 760 |             .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `5` is never read
[INFO] [stdout]    --> src/neovim.rs:307:39
[INFO] [stdout]     |
[INFO] [stdout] 301 |                 struct NvimBufLinesEvent(
[INFO] [stdout]     |                        ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 307 |                     #[serde(default)] Option<Value>, // { more }
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 307 |                     #[serde(default)] (), // { more }
[INFO] [stdout]     |                                       ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `threads` is never read
[INFO] [stdout]   --> src/rpc.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub struct Client<M>
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 74 |     threads: Threads,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Client` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `close` is never used
[INFO] [stdout]    --> src/rpc.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 77  | impl<M: Message> Client<M> {
[INFO] [stdout]     | -------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 128 |     fn close(self) -> Result<(), String> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/lspc/tracking_file.rs:61:25
[INFO] [stdout]    |
[INFO] [stdout] 61 |                         std::mem::replace(last_content_change, content_change.clone());
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |                         let _ = std::mem::replace(last_content_change, content_change.clone());
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/lspc/tracking_file.rs:74:21
[INFO] [stdout]    |
[INFO] [stdout] 74 |                     std::mem::replace(content, new_rope);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 74 |                     let _ = std::mem::replace(content, new_rope);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `5` is never read
[INFO] [stdout]    --> src/neovim.rs:307:39
[INFO] [stdout]     |
[INFO] [stdout] 301 |                 struct NvimBufLinesEvent(
[INFO] [stdout]     |                        ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 307 |                     #[serde(default)] Option<Value>, // { more }
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 307 |                     #[serde(default)] (), // { more }
[INFO] [stdout]     |                                       ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `threads` is never read
[INFO] [stdout]   --> src/rpc.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub struct Client<M>
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 74 |     threads: Threads,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Client` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `close` is never used
[INFO] [stdout]    --> src/rpc.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 77  | impl<M: Message> Client<M> {
[INFO] [stdout]     | -------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 128 |     fn close(self) -> Result<(), String> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/lspc/tracking_file.rs:61:25
[INFO] [stdout]    |
[INFO] [stdout] 61 |                         std::mem::replace(last_content_change, content_change.clone());
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |                         let _ = std::mem::replace(last_content_change, content_change.clone());
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/lspc/tracking_file.rs:74:21
[INFO] [stdout]    |
[INFO] [stdout] 74 |                     std::mem::replace(content, new_rope);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 74 |                     let _ = std::mem::replace(content, new_rope);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.87s
[INFO] running `Command { std: "docker" "inspect" "df8df6000d624d8a8066e46a9d28609d427fd20d9d7f40839b1323f0f0344d13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df8df6000d624d8a8066e46a9d28609d427fd20d9d7f40839b1323f0f0344d13", kill_on_drop: false }`
[INFO] [stdout] df8df6000d624d8a8066e46a9d28609d427fd20d9d7f40839b1323f0f0344d13
[INFO] checking unrealhoang/lspc against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funrealhoang%2Flspc" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/unrealhoang/lspc on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/unrealhoang/lspc
[INFO] finished tweaking git repo https://github.com/unrealhoang/lspc
[INFO] tweaked toml for git repo https://github.com/unrealhoang/lspc written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/unrealhoang/lspc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9d7b930a759d9f1ebaf8cd2b777f969d1ff06ef4d4e5189dde9b5264122c197
[INFO] running `Command { std: "docker" "start" "-a" "d9d7b930a759d9f1ebaf8cd2b777f969d1ff06ef4d4e5189dde9b5264122c197", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9d7b930a759d9f1ebaf8cd2b777f969d1ff06ef4d4e5189dde9b5264122c197", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9d7b930a759d9f1ebaf8cd2b777f969d1ff06ef4d4e5189dde9b5264122c197", kill_on_drop: false }`
[INFO] [stdout] d9d7b930a759d9f1ebaf8cd2b777f969d1ff06ef4d4e5189dde9b5264122c197
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0afe182f065465bb39dff5e7a09b4a7f895d85862a3c0505d6546ee0eea82f2
[INFO] running `Command { std: "docker" "start" "-a" "a0afe182f065465bb39dff5e7a09b4a7f895d85862a3c0505d6546ee0eea82f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking bimap v0.4.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking unicode-normalization v0.1.9
[INFO] [stderr]     Checking ropey v1.1.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking simple-logging v2.0.2
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking rmp v0.8.8 (https://github.com/3Hren/msgpack-rust#ef42c6b2)
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling serde_repr v0.1.5
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking serde_bytes v0.11.2
[INFO] [stderr]     Checking url_serde v0.2.0
[INFO] [stderr]     Checking rmpv v0.4.2 (https://github.com/3Hren/msgpack-rust#ef42c6b2)
[INFO] [stderr]     Checking lsp-types v0.61.0
[INFO] [stderr]     Checking lspc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/lspc/msg.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]   --> src/neovim.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     self,
[INFO] [stdout]    |     ^^^^ the item `serde` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/rpc.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/lspc/msg.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]   --> src/neovim.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     self,
[INFO] [stdout]    |     ^^^^ the item `serde` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Position` is imported redundantly
[INFO] [stdout]     --> src/neovim.rs:1039:21
[INFO] [stdout]      |
[INFO] [stdout] 1038 |     use super::*;
[INFO] [stdout]      |         -------- the item `Position` is already imported here
[INFO] [stdout] 1039 |     use lsp_types::{Position, Range, TextEdit};
[INFO] [stdout]      |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TextEdit` is imported redundantly
[INFO] [stdout]     --> src/neovim.rs:1039:38
[INFO] [stdout]      |
[INFO] [stdout] 1038 |     use super::*;
[INFO] [stdout]      |         -------- the item `TextEdit` is already imported here
[INFO] [stdout] 1039 |     use lsp_types::{Position, Range, TextEdit};
[INFO] [stdout]      |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/rpc.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lspc/msg.rs:97:71
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let msg = from_str(&text).map_err(|e| RpcError::Deserialize(e.description().into()))?;
[INFO] [stdout]    |                                                                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:112:44
[INFO] [stdout]     |
[INFO] [stdout] 112 |         .map_err(|e| RpcError::Serialize(e.description().into()))?;
[INFO] [stdout]     |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lspc/msg.rs:97:71
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let msg = from_str(&text).map_err(|e| RpcError::Deserialize(e.description().into()))?;
[INFO] [stdout]    |                                                                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:226:28
[INFO] [stdout]     |
[INFO] [stdout] 226 |             .map_err(|e| e.description().to_owned())?;
[INFO] [stdout]     |                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:112:44
[INFO] [stdout]     |
[INFO] [stdout] 112 |         .map_err(|e| RpcError::Serialize(e.description().into()))?;
[INFO] [stdout]     |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:226:28
[INFO] [stdout]     |
[INFO] [stdout] 226 |             .map_err(|e| e.description().to_owned())?;
[INFO] [stdout]     |                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:254:24
[INFO] [stdout]     |
[INFO] [stdout] 254 |         .map_err(|e| e.description().to_owned())?;
[INFO] [stdout]     |                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:255:52
[INFO] [stdout]     |
[INFO] [stdout] 255 |     let buf = String::from_utf8(buf).map_err(|e| e.description().to_owned())?;
[INFO] [stdout]     |                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:254:24
[INFO] [stdout]     |
[INFO] [stdout] 254 |         .map_err(|e| e.description().to_owned())?;
[INFO] [stdout]     |                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:255:52
[INFO] [stdout]     |
[INFO] [stdout] 255 |     let buf = String::from_utf8(buf).map_err(|e| e.description().to_owned())?;
[INFO] [stdout]     |                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lspc/msg.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |             Err(format!("malformed header: {:?}", buf))?;
[INFO] [stdout]     |             ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 231 |             Err::<T, std::string::String>(format!("malformed header: {:?}", buf))?;
[INFO] [stdout]     |                ++++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:263:40
[INFO] [stdout]     |
[INFO] [stdout] 263 |         .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lspc/msg.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |             Err(format!("malformed header: {:?}", buf))?;
[INFO] [stdout]     |             ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 231 |             Err::<T, std::string::String>(format!("malformed header: {:?}", buf))?;
[INFO] [stdout]     |                ++++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:265:40
[INFO] [stdout]     |
[INFO] [stdout] 265 |         .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:267:40
[INFO] [stdout]     |
[INFO] [stdout] 267 |         .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:263:40
[INFO] [stdout]     |
[INFO] [stdout] 263 |         .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:265:40
[INFO] [stdout]     |
[INFO] [stdout] 265 |         .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lspc/msg.rs:267:40
[INFO] [stdout]     |
[INFO] [stdout] 267 |         .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:735:74
[INFO] [stdout]     |
[INFO] [stdout] 735 |             EditorError::Failed(format!("Failed to encode params: {}", e.description()))
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:735:74
[INFO] [stdout]     |
[INFO] [stdout] 735 |             EditorError::Failed(format!("Failed to encode params: {}", e.description()))
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:745:64
[INFO] [stdout]     |
[INFO] [stdout] 745 |         let value = read_value(r).map_err(|e| RpcError::Read(e.description().into()))?;
[INFO] [stdout]     |                                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:748:67
[INFO] [stdout]     |
[INFO] [stdout] 748 |             from_value(value).map_err(|e| RpcError::Deserialize(e.description().into()))?;
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:757:70
[INFO] [stdout]     |
[INFO] [stdout] 757 |         let value = to_value(self).map_err(|e| RpcError::Serialize(e.description().into()))?;
[INFO] [stdout]     |                                                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:745:64
[INFO] [stdout]     |
[INFO] [stdout] 745 |         let value = read_value(r).map_err(|e| RpcError::Read(e.description().into()))?;
[INFO] [stdout]     |                                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:758:62
[INFO] [stdout]     |
[INFO] [stdout] 758 |         write_value(w, &value).map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:748:67
[INFO] [stdout]     |
[INFO] [stdout] 748 |             from_value(value).map_err(|e| RpcError::Deserialize(e.description().into()))?;
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:760:44
[INFO] [stdout]     |
[INFO] [stdout] 760 |             .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:757:70
[INFO] [stdout]     |
[INFO] [stdout] 757 |         let value = to_value(self).map_err(|e| RpcError::Serialize(e.description().into()))?;
[INFO] [stdout]     |                                                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:758:62
[INFO] [stdout]     |
[INFO] [stdout] 758 |         write_value(w, &value).map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/neovim.rs:760:44
[INFO] [stdout]     |
[INFO] [stdout] 760 |             .map_err(|e| RpcError::Write(e.description().into()))?;
[INFO] [stdout]     |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lspc` (lib) due to 2 previous errors; 17 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `lspc` (lib test) due to 2 previous errors; 19 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a0afe182f065465bb39dff5e7a09b4a7f895d85862a3c0505d6546ee0eea82f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0afe182f065465bb39dff5e7a09b4a7f895d85862a3c0505d6546ee0eea82f2", kill_on_drop: false }`
[INFO] [stdout] a0afe182f065465bb39dff5e7a09b4a7f895d85862a3c0505d6546ee0eea82f2