[INFO] cloning repository https://github.com/xTibor/serde-c64
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xTibor/serde-c64" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxTibor%2Fserde-c64", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxTibor%2Fserde-c64'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c94f265aad57b4d931ed57284acd51ca529eb23
[INFO] checking xTibor/serde-c64 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%2FxTibor%2Fserde-c64" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/xTibor/serde-c64
[INFO] finished tweaking git repo https://github.com/xTibor/serde-c64
[INFO] tweaked toml for git repo https://github.com/xTibor/serde-c64 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/xTibor/serde-c64 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] crate git repo https://github.com/xTibor/serde-c64 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 }`
[INFO] [stdout] 7fee013d8a4e25f32e8be6a1406f1a0ef8e74626e961272d72973f26cc1a1c98
[INFO] running `Command { std: "docker" "start" "-a" "7fee013d8a4e25f32e8be6a1406f1a0ef8e74626e961272d72973f26cc1a1c98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fee013d8a4e25f32e8be6a1406f1a0ef8e74626e961272d72973f26cc1a1c98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fee013d8a4e25f32e8be6a1406f1a0ef8e74626e961272d72973f26cc1a1c98", kill_on_drop: false }`
[INFO] [stdout] 7fee013d8a4e25f32e8be6a1406f1a0ef8e74626e961272d72973f26cc1a1c98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 }`
[INFO] [stdout] 80fb3c4760c65655a52a8b88ba9d50f0f7971dc12c6da382ff77380a3a836b39
[INFO] running `Command { std: "docker" "start" "-a" "80fb3c4760c65655a52a8b88ba9d50f0f7971dc12c6da382ff77380a3a836b39", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking basic v0.1.0 (/opt/rustwide/workdir/crates/basic)
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.55
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde-c64 v0.1.0 (/opt/rustwide/workdir/crates/serde-c64)
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> crates/serde-c64/src/error.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn custom<T>(msg: T) -> Self
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> crates/serde-c64/src/error.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> crates/serde-c64/src/error.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn custom<T>(msg: T) -> Self
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> crates/serde-c64/src/error.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:236:78
[INFO] [stdout]     |
[INFO] [stdout] 236 |       fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq> {
[INFO] [stdout]     |  ______________________________________________________________________________^
[INFO] [stdout] 237 | |         if self.options.container_prefix_options.sequence_length {
[INFO] [stdout] 238 | |             self.serialize_u64(len.unwrap_or(0) as u64)?;
[INFO] [stdout] ...   |
[INFO] [stdout] 241 | |         Ok(self)
[INFO] [stdout] 242 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:238:13
[INFO] [stdout]     |
[INFO] [stdout] 238 |             self.serialize_u64(len.unwrap_or(0) as u64)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:244:74
[INFO] [stdout]     |
[INFO] [stdout] 244 |       fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple> {
[INFO] [stdout]     |  __________________________________________________________________________^
[INFO] [stdout] 245 | |         if self.options.container_prefix_options.tuple_length {
[INFO] [stdout] 246 | |             self.serialize_u64(len as u64)?;
[INFO] [stdout] ...   |
[INFO] [stdout] 249 | |         Ok(self)
[INFO] [stdout] 250 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:246:13
[INFO] [stdout]     |
[INFO] [stdout] 246 |             self.serialize_u64(len as u64)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:249:9
[INFO] [stdout]     |
[INFO] [stdout] 249 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:252:108
[INFO] [stdout]     |
[INFO] [stdout] 252 |       fn serialize_tuple_struct(self, _name: &'static str, len: usize) -> Result<Self::SerializeTupleStruct> {
[INFO] [stdout]     |  ____________________________________________________________________________________________________________^
[INFO] [stdout] 253 | |         if self.options.container_prefix_options.tuple_length {
[INFO] [stdout] 254 | |             self.serialize_u64(len as u64)?;
[INFO] [stdout] ...   |
[INFO] [stdout] 257 | |         Ok(self)
[INFO] [stdout] 258 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:254:13
[INFO] [stdout]     |
[INFO] [stdout] 254 |             self.serialize_u64(len as u64)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:257:9
[INFO] [stdout]     |
[INFO] [stdout] 257 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:266:46
[INFO] [stdout]     |
[INFO] [stdout] 266 |       ) -> Result<Self::SerializeTupleVariant> {
[INFO] [stdout]     |  ______________________________________________^
[INFO] [stdout] 267 | |         if self.options.emit_enum_names {
[INFO] [stdout] 268 | |             self.serialize_str(variant)?;
[INFO] [stdout] 269 | |         } else {
[INFO] [stdout] ...   |
[INFO] [stdout] 277 | |         Ok(self)
[INFO] [stdout] 278 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:268:13
[INFO] [stdout]     |
[INFO] [stdout] 268 |             self.serialize_str(variant)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:270:13
[INFO] [stdout]     |
[INFO] [stdout] 270 |             self.serialize_u32(variant_index)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:274:13
[INFO] [stdout]     |
[INFO] [stdout] 274 |             self.serialize_u64(len as u64)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:277:9
[INFO] [stdout]     |
[INFO] [stdout] 277 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:280:78
[INFO] [stdout]     |
[INFO] [stdout] 280 |       fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap> {
[INFO] [stdout]     |  ______________________________________________________________________________^
[INFO] [stdout] 281 | |         if self.options.container_prefix_options.map_length {
[INFO] [stdout] 282 | |             self.serialize_u64(len.unwrap_or(0) as u64)?;
[INFO] [stdout] ...   |
[INFO] [stdout] 285 | |         Ok(self)
[INFO] [stdout] 286 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:282:13
[INFO] [stdout]     |
[INFO] [stdout] 282 |             self.serialize_u64(len.unwrap_or(0) as u64)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:285:9
[INFO] [stdout]     |
[INFO] [stdout] 285 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:288:98
[INFO] [stdout]     |
[INFO] [stdout] 288 |       fn serialize_struct(self, _name: &'static str, _len: usize) -> Result<Self::SerializeStruct> {
[INFO] [stdout]     |  __________________________________________________________________________________________________^
[INFO] [stdout] 289 | |         Ok(self)
[INFO] [stdout] 290 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:289:9
[INFO] [stdout]     |
[INFO] [stdout] 289 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:298:47
[INFO] [stdout]     |
[INFO] [stdout] 298 |       ) -> Result<Self::SerializeStructVariant> {
[INFO] [stdout]     |  _______________________________________________^
[INFO] [stdout] 299 | |         if self.options.emit_enum_names {
[INFO] [stdout] 300 | |             self.serialize_str(variant)?;
[INFO] [stdout] 301 | |         } else {
[INFO] [stdout] ...   |
[INFO] [stdout] 305 | |         Ok(self)
[INFO] [stdout] 306 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:300:13
[INFO] [stdout]     |
[INFO] [stdout] 300 |             self.serialize_str(variant)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:302:13
[INFO] [stdout]     |
[INFO] [stdout] 302 |             self.serialize_u32(variant_index)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:305:9
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:236:78
[INFO] [stdout]     |
[INFO] [stdout] 236 |       fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq> {
[INFO] [stdout]     |  ______________________________________________________________________________^
[INFO] [stdout] 237 | |         if self.options.container_prefix_options.sequence_length {
[INFO] [stdout] 238 | |             self.serialize_u64(len.unwrap_or(0) as u64)?;
[INFO] [stdout] ...   |
[INFO] [stdout] 241 | |         Ok(self)
[INFO] [stdout] 242 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:238:13
[INFO] [stdout]     |
[INFO] [stdout] 238 |             self.serialize_u64(len.unwrap_or(0) as u64)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:244:74
[INFO] [stdout]     |
[INFO] [stdout] 244 |       fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple> {
[INFO] [stdout]     |  __________________________________________________________________________^
[INFO] [stdout] 245 | |         if self.options.container_prefix_options.tuple_length {
[INFO] [stdout] 246 | |             self.serialize_u64(len as u64)?;
[INFO] [stdout] ...   |
[INFO] [stdout] 249 | |         Ok(self)
[INFO] [stdout] 250 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:246:13
[INFO] [stdout]     |
[INFO] [stdout] 246 |             self.serialize_u64(len as u64)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:249:9
[INFO] [stdout]     |
[INFO] [stdout] 249 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:252:108
[INFO] [stdout]     |
[INFO] [stdout] 252 |       fn serialize_tuple_struct(self, _name: &'static str, len: usize) -> Result<Self::SerializeTupleStruct> {
[INFO] [stdout]     |  ____________________________________________________________________________________________________________^
[INFO] [stdout] 253 | |         if self.options.container_prefix_options.tuple_length {
[INFO] [stdout] 254 | |             self.serialize_u64(len as u64)?;
[INFO] [stdout] ...   |
[INFO] [stdout] 257 | |         Ok(self)
[INFO] [stdout] 258 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:254:13
[INFO] [stdout]     |
[INFO] [stdout] 254 |             self.serialize_u64(len as u64)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:257:9
[INFO] [stdout]     |
[INFO] [stdout] 257 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:266:46
[INFO] [stdout]     |
[INFO] [stdout] 266 |       ) -> Result<Self::SerializeTupleVariant> {
[INFO] [stdout]     |  ______________________________________________^
[INFO] [stdout] 267 | |         if self.options.emit_enum_names {
[INFO] [stdout] 268 | |             self.serialize_str(variant)?;
[INFO] [stdout] 269 | |         } else {
[INFO] [stdout] ...   |
[INFO] [stdout] 277 | |         Ok(self)
[INFO] [stdout] 278 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:268:13
[INFO] [stdout]     |
[INFO] [stdout] 268 |             self.serialize_str(variant)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:270:13
[INFO] [stdout]     |
[INFO] [stdout] 270 |             self.serialize_u32(variant_index)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:274:13
[INFO] [stdout]     |
[INFO] [stdout] 274 |             self.serialize_u64(len as u64)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:277:9
[INFO] [stdout]     |
[INFO] [stdout] 277 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:280:78
[INFO] [stdout]     |
[INFO] [stdout] 280 |       fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap> {
[INFO] [stdout]     |  ______________________________________________________________________________^
[INFO] [stdout] 281 | |         if self.options.container_prefix_options.map_length {
[INFO] [stdout] 282 | |             self.serialize_u64(len.unwrap_or(0) as u64)?;
[INFO] [stdout] ...   |
[INFO] [stdout] 285 | |         Ok(self)
[INFO] [stdout] 286 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:282:13
[INFO] [stdout]     |
[INFO] [stdout] 282 |             self.serialize_u64(len.unwrap_or(0) as u64)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:285:9
[INFO] [stdout]     |
[INFO] [stdout] 285 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:288:98
[INFO] [stdout]     |
[INFO] [stdout] 288 |       fn serialize_struct(self, _name: &'static str, _len: usize) -> Result<Self::SerializeStruct> {
[INFO] [stdout]     |  __________________________________________________________________________________________________^
[INFO] [stdout] 289 | |         Ok(self)
[INFO] [stdout] 290 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:289:9
[INFO] [stdout]     |
[INFO] [stdout] 289 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:298:47
[INFO] [stdout]     |
[INFO] [stdout] 298 |       ) -> Result<Self::SerializeStructVariant> {
[INFO] [stdout]     |  _______________________________________________^
[INFO] [stdout] 299 | |         if self.options.emit_enum_names {
[INFO] [stdout] 300 | |             self.serialize_str(variant)?;
[INFO] [stdout] 301 | |         } else {
[INFO] [stdout] ...   |
[INFO] [stdout] 305 | |         Ok(self)
[INFO] [stdout] 306 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:300:13
[INFO] [stdout]     |
[INFO] [stdout] 300 |             self.serialize_str(variant)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:302:13
[INFO] [stdout]     |
[INFO] [stdout] 302 |             self.serialize_u32(variant_index)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<&mut ser::Serializer, error::Error>
[INFO] [stdout]    --> crates/serde-c64/src/ser.rs:305:9
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Ok(self)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde-c64` (lib test) due to 23 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `serde-c64` (lib) due to 23 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "80fb3c4760c65655a52a8b88ba9d50f0f7971dc12c6da382ff77380a3a836b39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80fb3c4760c65655a52a8b88ba9d50f0f7971dc12c6da382ff77380a3a836b39", kill_on_drop: false }`
[INFO] [stdout] 80fb3c4760c65655a52a8b88ba9d50f0f7971dc12c6da382ff77380a3a836b39