[INFO] fetching crate cube-engine 0.1.0...
[INFO] checking cube-engine-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate cube-engine 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate cube-engine 0.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cube-engine 0.1.0
[INFO] finished tweaking crates.io crate cube-engine 0.1.0
[INFO] tweaked toml for crates.io crate cube-engine 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages
[INFO] [stderr]       Adding libflate v0.1.27 (latest: v2.0.0)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.79)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.35)
[INFO] [stderr]       Adding syn v0.14.9 (latest: v2.0.58)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rle-decode-fast v1.0.3
[INFO] [stderr]   Downloaded libflate v0.1.27
[INFO] [stderr]   Downloaded syn v0.14.9
[INFO] [stderr]   Downloaded speculate v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f99a03d7ce0274c9ab46141cabba2e8c1705cd645a1db5e5355ca17cdb0805cd
[INFO] running `Command { std: "docker" "start" "-a" "f99a03d7ce0274c9ab46141cabba2e8c1705cd645a1db5e5355ca17cdb0805cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f99a03d7ce0274c9ab46141cabba2e8c1705cd645a1db5e5355ca17cdb0805cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f99a03d7ce0274c9ab46141cabba2e8c1705cd645a1db5e5355ca17cdb0805cd", kill_on_drop: false }`
[INFO] [stdout] f99a03d7ce0274c9ab46141cabba2e8c1705cd645a1db5e5355ca17cdb0805cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c8d1a7409f8e68ef8cf8abfdea7d99331c62be3aaa84f34dd030987c342b732
[INFO] running `Command { std: "docker" "start" "-a" "8c8d1a7409f8e68ef8cf8abfdea7d99331c62be3aaa84f34dd030987c342b732", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking rle-decode-fast v1.0.3
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]     Checking cube-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io/reader.rs:173:46
[INFO] [stdout]     |
[INFO] [stdout] 173 |             .map_err(|err| make_io_error(err.description()))?;
[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/io/reader.rs:183:46
[INFO] [stdout]     |
[INFO] [stdout] 183 |             .map_err(|err| make_io_error(err.description()))?;
[INFO] [stdout]     |                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:35:43
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn handle_ll_login_request(&mut self, signal: LoginRequest) { cs_only!() }
[INFO] [stdout]    |                                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:37:42
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn handle_ll_login_accept(&mut self, signal: LoginAccept) {
[INFO] [stdout]    |                                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:41:47
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn handle_ll_server_disconnect(&mut self, signal: ServerDisconnect) {
[INFO] [stdout]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:45:47
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn handle_ll_client_disconnect(&mut self, signal: ClientDisconnect) { cs_only!() }
[INFO] [stdout]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:47:34
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn handle_ll_ping(&mut self, signal: Ping) {
[INFO] [stdout]    |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:51:34
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn handle_ll_pong(&mut self, signal: Pong) {
[INFO] [stdout]    |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:55:35
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn handle_pk_spawn(&mut self, signal: Spawn) {
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling speculate v0.1.2
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io/reader.rs:173:46
[INFO] [stdout]     |
[INFO] [stdout] 173 |             .map_err(|err| make_io_error(err.description()))?;
[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/io/reader.rs:183:46
[INFO] [stdout]     |
[INFO] [stdout] 183 |             .map_err(|err| make_io_error(err.description()))?;
[INFO] [stdout]     |                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:35:43
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn handle_ll_login_request(&mut self, signal: LoginRequest) { cs_only!() }
[INFO] [stdout]    |                                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:37:42
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn handle_ll_login_accept(&mut self, signal: LoginAccept) {
[INFO] [stdout]    |                                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:41:47
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn handle_ll_server_disconnect(&mut self, signal: ServerDisconnect) {
[INFO] [stdout]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:45:47
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn handle_ll_client_disconnect(&mut self, signal: ClientDisconnect) { cs_only!() }
[INFO] [stdout]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:47:34
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn handle_ll_ping(&mut self, signal: Ping) {
[INFO] [stdout]    |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:51:34
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn handle_ll_pong(&mut self, signal: Pong) {
[INFO] [stdout]    |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:55:35
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn handle_pk_spawn(&mut self, signal: Spawn) {
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.71s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "8c8d1a7409f8e68ef8cf8abfdea7d99331c62be3aaa84f34dd030987c342b732", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c8d1a7409f8e68ef8cf8abfdea7d99331c62be3aaa84f34dd030987c342b732", kill_on_drop: false }`
[INFO] [stdout] 8c8d1a7409f8e68ef8cf8abfdea7d99331c62be3aaa84f34dd030987c342b732
[INFO] checking cube-engine-0.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate cube-engine 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate cube-engine 0.1.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cube-engine 0.1.0
[INFO] finished tweaking crates.io crate cube-engine 0.1.0
[INFO] tweaked toml for crates.io crate cube-engine 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages
[INFO] [stderr]       Adding libflate v0.1.27 (latest: v2.0.0)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.79)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.35)
[INFO] [stderr]       Adding syn v0.14.9 (latest: v2.0.58)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 411706bef47b8c0f798ddff3a4780feedd8fcb4b52bf9b37c47faca1a9901ecd
[INFO] running `Command { std: "docker" "start" "-a" "411706bef47b8c0f798ddff3a4780feedd8fcb4b52bf9b37c47faca1a9901ecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "411706bef47b8c0f798ddff3a4780feedd8fcb4b52bf9b37c47faca1a9901ecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "411706bef47b8c0f798ddff3a4780feedd8fcb4b52bf9b37c47faca1a9901ecd", kill_on_drop: false }`
[INFO] [stdout] 411706bef47b8c0f798ddff3a4780feedd8fcb4b52bf9b37c47faca1a9901ecd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b43eaf320812912a3020f32e7a5e4969cac4cd8f73a2b72da4e7243a3d1faecb
[INFO] running `Command { std: "docker" "start" "-a" "b43eaf320812912a3020f32e7a5e4969cac4cd8f73a2b72da4e7243a3d1faecb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking rle-decode-fast v1.0.3
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]     Checking cube-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io/reader.rs:173:46
[INFO] [stdout]     |
[INFO] [stdout] 173 |             .map_err(|err| make_io_error(err.description()))?;
[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/io/reader.rs:183:46
[INFO] [stdout]     |
[INFO] [stdout] 183 |             .map_err(|err| make_io_error(err.description()))?;
[INFO] [stdout]     |                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:35:43
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn handle_ll_login_request(&mut self, signal: LoginRequest) { cs_only!() }
[INFO] [stdout]    |                                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:37:42
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn handle_ll_login_accept(&mut self, signal: LoginAccept) {
[INFO] [stdout]    |                                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:41:47
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn handle_ll_server_disconnect(&mut self, signal: ServerDisconnect) {
[INFO] [stdout]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:45:47
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn handle_ll_client_disconnect(&mut self, signal: ClientDisconnect) { cs_only!() }
[INFO] [stdout]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:47:34
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn handle_ll_ping(&mut self, signal: Ping) {
[INFO] [stdout]    |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:51:34
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn handle_ll_pong(&mut self, signal: Pong) {
[INFO] [stdout]    |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:55:35
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn handle_pk_spawn(&mut self, signal: Spawn) {
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling speculate v0.1.2
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io/reader.rs:173:46
[INFO] [stdout]     |
[INFO] [stdout] 173 |             .map_err(|err| make_io_error(err.description()))?;
[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/io/reader.rs:183:46
[INFO] [stdout]     |
[INFO] [stdout] 183 |             .map_err(|err| make_io_error(err.description()))?;
[INFO] [stdout]     |                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:35:43
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn handle_ll_login_request(&mut self, signal: LoginRequest) { cs_only!() }
[INFO] [stdout]    |                                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:37:42
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn handle_ll_login_accept(&mut self, signal: LoginAccept) {
[INFO] [stdout]    |                                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:41:47
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn handle_ll_server_disconnect(&mut self, signal: ServerDisconnect) {
[INFO] [stdout]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:45:47
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn handle_ll_client_disconnect(&mut self, signal: ClientDisconnect) { cs_only!() }
[INFO] [stdout]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:47:34
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn handle_ll_ping(&mut self, signal: Ping) {
[INFO] [stdout]    |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:51:34
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn handle_ll_pong(&mut self, signal: Pong) {
[INFO] [stdout]    |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signal`
[INFO] [stdout]   --> src/client/handler.rs:55:35
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn handle_pk_spawn(&mut self, signal: Spawn) {
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_signal`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.22s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "b43eaf320812912a3020f32e7a5e4969cac4cd8f73a2b72da4e7243a3d1faecb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b43eaf320812912a3020f32e7a5e4969cac4cd8f73a2b72da4e7243a3d1faecb", kill_on_drop: false }`
[INFO] [stdout] b43eaf320812912a3020f32e7a5e4969cac4cd8f73a2b72da4e7243a3d1faecb