[INFO] updating cached repository https://github.com/unrealhoang/lspc
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/unrealhoang/lspc
[INFO] [stderr]  - [deleted]         (none)     -> use_serde
[INFO] [stderr]    a600af8..08756e4  master               -> master
[INFO] [stderr]  + 8ea13ae...f5f2d76 text-synchronization -> text-synchronization  (forced update)
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 08756e472be835b2468d0992184f0ce020bd0619
[INFO] checking unrealhoang/lspc against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Funrealhoang%2Flspc" "work/builds/worker-3/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/unrealhoang/lspc on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[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 work/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/unrealhoang/lspc already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 033758a40e7f4e850f5d6fbd5a23e4710df885a210cb3a1a49ab201c2d3af663
[INFO] running `"docker" "start" "-a" "033758a40e7f4e850f5d6fbd5a23e4710df885a210cb3a1a49ab201c2d3af663"`
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking rmp v0.8.8 (https://github.com/unrealhoang/msgpack-rust?branch=support-serde-ext#f89c2a28)
[INFO] [stderr]     Checking simple-logging v2.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]    Compiling serde_repr v0.1.5
[INFO] [stderr]     Checking serde v1.0.99
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_bytes v0.11.2
[INFO] [stderr]     Checking url_serde v0.2.0
[INFO] [stderr]     Checking rmpv v0.4.1 (https://github.com/unrealhoang/msgpack-rust?branch=support-serde-ext#f89c2a28)
[INFO] [stderr]     Checking lsp-types v0.61.0
[INFO] [stderr]     Checking lspc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `close`
[INFO] [stderr]    --> src/rpc.rs:128:5
[INFO] [stderr]     |
[INFO] [stderr] 128 |     fn close(self) -> Result<(), String> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `close`
[INFO] [stderr]    --> src/rpc.rs:128:5
[INFO] [stderr]     |
[INFO] [stderr] 128 |     fn close(self) -> Result<(), String> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/neovim_lspc.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     simple_logging::log_to_file("log.txt", log::LevelFilter::Debug);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/neovim_lspc.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     simple_logging::log_to_file("log.txt", log::LevelFilter::Debug);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 06s
[INFO] running `"docker" "inspect" "033758a40e7f4e850f5d6fbd5a23e4710df885a210cb3a1a49ab201c2d3af663"`
[INFO] running `"docker" "rm" "-f" "033758a40e7f4e850f5d6fbd5a23e4710df885a210cb3a1a49ab201c2d3af663"`
[INFO] [stdout] 033758a40e7f4e850f5d6fbd5a23e4710df885a210cb3a1a49ab201c2d3af663