Dec 12 07:43:52.860 INFO checking serde_transit-0.1.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 07:43:52.860 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 07:43:53.324 INFO [stdout] ecfb6881e079fd6b80aaaf223f59c9d25a45863b367fa8714ce38e900a3770d6
Dec 12 07:43:53.326 INFO running `"docker" "start" "-a" "ecfb6881e079fd6b80aaaf223f59c9d25a45863b367fa8714ce38e900a3770d6"`
Dec 12 07:43:54.349 INFO [stderr] usermod: no changes
Dec 12 07:43:54.444 INFO [stderr]     Checking serde_transit v0.1.0 (/source)
Dec 12 07:43:55.244 INFO [stderr] warning: private trait `ser::Formatter` in public interface (error E0445)
Dec 12 07:43:55.244 INFO [stderr]    --> src/ser.rs:57:1
Dec 12 07:43:55.244 INFO [stderr]     |
Dec 12 07:43:55.244 INFO [stderr] 57  | / impl<'a, W, F> ser::Serializer for &'a mut Serializer<W, F>
Dec 12 07:43:55.244 INFO [stderr] 58  | |     where W: io::Write,
Dec 12 07:43:55.244 INFO [stderr] 59  | |           F: Formatter
Dec 12 07:43:55.244 INFO [stderr] 60  | | {
Dec 12 07:43:55.244 INFO [stderr] ...   |
Dec 12 07:43:55.244 INFO [stderr] 293 | |     }
Dec 12 07:43:55.244 INFO [stderr] 294 | | }
Dec 12 07:43:55.244 INFO [stderr]     | |_^
Dec 12 07:43:55.244 INFO [stderr]     |
Dec 12 07:43:55.244 INFO [stderr]     = note: #[warn(private_in_public)] on by default
Dec 12 07:43:55.244 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 12 07:43:55.244 INFO [stderr]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 12 07:43:55.244 INFO [stderr] 
Dec 12 07:43:55.244 INFO [stderr] warning: private trait `ser::Formatter` in public interface (error E0445)
Dec 12 07:43:55.244 INFO [stderr]    --> src/ser.rs:424:1
Dec 12 07:43:55.244 INFO [stderr]     |
Dec 12 07:43:55.244 INFO [stderr] 424 | / impl<'a, W, F> ser::SerializeStruct for Compound<'a, W, F>
Dec 12 07:43:55.244 INFO [stderr] 425 | |     where W: io::Write,
Dec 12 07:43:55.244 INFO [stderr] 426 | |           F: Formatter
Dec 12 07:43:55.244 INFO [stderr] 427 | | {
Dec 12 07:43:55.244 INFO [stderr] ...   |
Dec 12 07:43:55.244 INFO [stderr] 439 | |     }
Dec 12 07:43:55.244 INFO [stderr] 440 | | }
Dec 12 07:43:55.244 INFO [stderr]     | |_^
Dec 12 07:43:55.244 INFO [stderr]     |
Dec 12 07:43:55.244 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 12 07:43:55.244 INFO [stderr]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 12 07:43:55.244 INFO [stderr] 
Dec 12 07:43:55.244 INFO [stderr] warning: unused variable: `e`
Dec 12 07:43:55.244 INFO [stderr]   --> src/error.rs:79:13
Dec 12 07:43:55.244 INFO [stderr]    |
Dec 12 07:43:55.244 INFO [stderr] 79 |     fn from(e: json::Error) -> Error {
Dec 12 07:43:55.244 INFO [stderr]    |             ^ help: consider using `_e` instead
Dec 12 07:43:55.244 INFO [stderr]    |
Dec 12 07:43:55.244 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 07:43:55.244 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `len`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:234:28
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 234 |     fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq> {
Dec 12 07:43:55.245 INFO [stderr]     |                            ^^^ help: consider using `_len` instead
Dec 12 07:43:55.245 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `len`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:243:30
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 243 |     fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple> {
Dec 12 07:43:55.245 INFO [stderr]     |                              ^^^ help: consider using `_len` instead
Dec 12 07:43:55.245 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `name`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:250:31
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 250 |                               name: &'static str,
Dec 12 07:43:55.245 INFO [stderr]     |                               ^^^^ help: consider using `_name` instead
Dec 12 07:43:55.245 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `len`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:251:31
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 251 |                               len: usize)
Dec 12 07:43:55.245 INFO [stderr]     |                               ^^^ help: consider using `_len` instead
Dec 12 07:43:55.245 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `name`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:260:32
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 260 |                                name: &'static str,
Dec 12 07:43:55.245 INFO [stderr]     |                                ^^^^ help: consider using `_name` instead
Dec 12 07:43:55.245 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `variant_index`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:261:32
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 261 |                                variant_index: u32,
Dec 12 07:43:55.245 INFO [stderr]     |                                ^^^^^^^^^^^^^ help: consider using `_variant_index` instead
Dec 12 07:43:55.245 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `variant`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:262:32
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 262 |                                variant: &'static str,
Dec 12 07:43:55.245 INFO [stderr]     |                                ^^^^^^^ help: consider using `_variant` instead
Dec 12 07:43:55.245 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `len`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:263:32
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 263 |                                len: usize)
Dec 12 07:43:55.245 INFO [stderr]     |                                ^^^ help: consider using `_len` instead
Dec 12 07:43:55.245 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `len`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:269:28
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 269 |     fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap> {
Dec 12 07:43:55.245 INFO [stderr]     |                            ^^^ help: consider using `_len` instead
Dec 12 07:43:55.245 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `name`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:287:33
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 287 |                                 name: &'static str,
Dec 12 07:43:55.245 INFO [stderr]     |                                 ^^^^ help: consider using `_name` instead
Dec 12 07:43:55.245 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `variant_index`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:288:33
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 288 |                                 variant_index: u32,
Dec 12 07:43:55.245 INFO [stderr]     |                                 ^^^^^^^^^^^^^ help: consider using `_variant_index` instead
Dec 12 07:43:55.245 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `variant`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:289:33
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 289 |                                 variant: &'static str,
Dec 12 07:43:55.245 INFO [stderr]     |                                 ^^^^^^^ help: consider using `_variant` instead
Dec 12 07:43:55.245 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `len`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:290:33
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 290 |                                 len: usize)
Dec 12 07:43:55.245 INFO [stderr]     |                                 ^^^ help: consider using `_len` instead
Dec 12 07:43:55.245 INFO [stderr] 
Dec 12 07:43:55.245 INFO [stderr] warning: unused variable: `value`
Dec 12 07:43:55.245 INFO [stderr]    --> src/ser.rs:314:40
Dec 12 07:43:55.245 INFO [stderr]     |
Dec 12 07:43:55.245 INFO [stderr] 314 |     fn serialize_element<T>(&mut self, value: &T) -> Result<()>
Dec 12 07:43:55.245 INFO [stderr]     |                                        ^^^^^ help: consider using `_value` instead
Dec 12 07:43:55.246 INFO [stderr] 
Dec 12 07:43:55.246 INFO [stderr] warning: unused variable: `value`
Dec 12 07:43:55.246 INFO [stderr]    --> src/ser.rs:331:40
Dec 12 07:43:55.246 INFO [stderr]     |
Dec 12 07:43:55.246 INFO [stderr] 331 |     fn serialize_element<T>(&mut self, value: &T) -> Result<()>
Dec 12 07:43:55.246 INFO [stderr]     |                                        ^^^^^ help: consider using `_value` instead
Dec 12 07:43:55.246 INFO [stderr] 
Dec 12 07:43:55.246 INFO [stderr] warning: unused variable: `value`
Dec 12 07:43:55.246 INFO [stderr]    --> src/ser.rs:347:38
Dec 12 07:43:55.246 INFO [stderr]     |
Dec 12 07:43:55.246 INFO [stderr] 347 |     fn serialize_field<T>(&mut self, value: &T) -> Result<()>
Dec 12 07:43:55.246 INFO [stderr]     |                                      ^^^^^ help: consider using `_value` instead
Dec 12 07:43:55.246 INFO [stderr] 
Dec 12 07:43:55.246 INFO [stderr] warning: unused variable: `value`
Dec 12 07:43:55.246 INFO [stderr]    --> src/ser.rs:371:38
Dec 12 07:43:55.246 INFO [stderr]     |
Dec 12 07:43:55.246 INFO [stderr] 371 |     fn serialize_field<T>(&mut self, value: &T) -> Result<()>
Dec 12 07:43:55.246 INFO [stderr]     |                                      ^^^^^ help: consider using `_value` instead
Dec 12 07:43:55.246 INFO [stderr] 
Dec 12 07:43:55.246 INFO [stderr] warning: unused variable: `key`
Dec 12 07:43:55.246 INFO [stderr]    --> src/ser.rs:402:36
Dec 12 07:43:55.246 INFO [stderr]     |
Dec 12 07:43:55.246 INFO [stderr] 402 |     fn serialize_key<T>(&mut self, key: &T) -> Result<()>
Dec 12 07:43:55.246 INFO [stderr]     |                                    ^^^ help: consider using `_key` instead
Dec 12 07:43:55.246 INFO [stderr] 
Dec 12 07:43:55.246 INFO [stderr] warning: unused variable: `value`
Dec 12 07:43:55.246 INFO [stderr]    --> src/ser.rs:411:38
Dec 12 07:43:55.246 INFO [stderr]     |
Dec 12 07:43:55.246 INFO [stderr] 411 |     fn serialize_value<T>(&mut self, value: &T) -> Result<()>
Dec 12 07:43:55.246 INFO [stderr]     |                                      ^^^^^ help: consider using `_value` instead
Dec 12 07:43:55.246 INFO [stderr] 
Dec 12 07:43:55.246 INFO [stderr] warning: unused variable: `key`
Dec 12 07:43:55.246 INFO [stderr]    --> src/ser.rs:448:38
Dec 12 07:43:55.246 INFO [stderr]     |
Dec 12 07:43:55.246 INFO [stderr] 448 |     fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
Dec 12 07:43:55.246 INFO [stderr]     |                                      ^^^ help: consider using `_key` instead
Dec 12 07:43:55.246 INFO [stderr] 
Dec 12 07:43:55.246 INFO [stderr] warning: unused variable: `value`
Dec 12 07:43:55.246 INFO [stderr]    --> src/ser.rs:448:57
Dec 12 07:43:55.246 INFO [stderr]     |
Dec 12 07:43:55.246 INFO [stderr] 448 |     fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
Dec 12 07:43:55.246 INFO [stderr]     |                                                         ^^^^^ help: consider using `_value` instead
Dec 12 07:43:55.246 INFO [stderr] 
Dec 12 07:43:55.296 INFO [stderr] warning: function is never used: `to_pretty_writer`
Dec 12 07:43:55.301 INFO [stderr]   --> src/ser.rs:48:1
Dec 12 07:43:55.301 INFO [stderr]    |
Dec 12 07:43:55.301 INFO [stderr] 48 | / pub fn to_pretty_writer<W, T: ?Sized>(writer: W, value: &T) -> Result<()>
Dec 12 07:43:55.301 INFO [stderr] 49 | |     where W: io::Write,
Dec 12 07:43:55.301 INFO [stderr] 50 | |           T: ser::Serialize
Dec 12 07:43:55.301 INFO [stderr] 51 | | {
Dec 12 07:43:55.301 INFO [stderr] ...  |
Dec 12 07:43:55.301 INFO [stderr] 54 | |     Ok(())
Dec 12 07:43:55.301 INFO [stderr] 55 | | }
Dec 12 07:43:55.301 INFO [stderr]    | |_^
Dec 12 07:43:55.301 INFO [stderr]    |
Dec 12 07:43:55.301 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 07:43:55.301 INFO [stderr] 
Dec 12 07:43:55.490 INFO [stderr] warning: private trait `ser::Formatter` in public interface (error E0445)
Dec 12 07:43:55.490 INFO [stderr]    --> src/ser.rs:57:1
Dec 12 07:43:55.490 INFO [stderr]     |
Dec 12 07:43:55.490 INFO [stderr] 57  | / impl<'a, W, F> ser::Serializer for &'a mut Serializer<W, F>
Dec 12 07:43:55.490 INFO [stderr] 58  | |     where W: io::Write,
Dec 12 07:43:55.490 INFO [stderr] 59  | |           F: Formatter
Dec 12 07:43:55.490 INFO [stderr] 60  | | {
Dec 12 07:43:55.490 INFO [stderr] ...   |
Dec 12 07:43:55.490 INFO [stderr] 293 | |     }
Dec 12 07:43:55.490 INFO [stderr] 294 | | }
Dec 12 07:43:55.490 INFO [stderr]     | |_^
Dec 12 07:43:55.490 INFO [stderr]     |
Dec 12 07:43:55.490 INFO [stderr]     = note: #[warn(private_in_public)] on by default
Dec 12 07:43:55.490 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 12 07:43:55.490 INFO [stderr]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 12 07:43:55.490 INFO [stderr] 
Dec 12 07:43:55.490 INFO [stderr] warning: private trait `ser::Formatter` in public interface (error E0445)
Dec 12 07:43:55.490 INFO [stderr]    --> src/ser.rs:424:1
Dec 12 07:43:55.490 INFO [stderr]     |
Dec 12 07:43:55.490 INFO [stderr] 424 | / impl<'a, W, F> ser::SerializeStruct for Compound<'a, W, F>
Dec 12 07:43:55.490 INFO [stderr] 425 | |     where W: io::Write,
Dec 12 07:43:55.490 INFO [stderr] 426 | |           F: Formatter
Dec 12 07:43:55.490 INFO [stderr] 427 | | {
Dec 12 07:43:55.490 INFO [stderr] ...   |
Dec 12 07:43:55.490 INFO [stderr] 439 | |     }
Dec 12 07:43:55.490 INFO [stderr] 440 | | }
Dec 12 07:43:55.490 INFO [stderr]     | |_^
Dec 12 07:43:55.490 INFO [stderr]     |
Dec 12 07:43:55.490 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 12 07:43:55.490 INFO [stderr]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 12 07:43:55.490 INFO [stderr] 
Dec 12 07:43:55.491 INFO [stderr] warning: unused variable: `e`
Dec 12 07:43:55.491 INFO [stderr]   --> src/error.rs:79:13
Dec 12 07:43:55.491 INFO [stderr]    |
Dec 12 07:43:55.491 INFO [stderr] 79 |     fn from(e: json::Error) -> Error {
Dec 12 07:43:55.491 INFO [stderr]    |             ^ help: consider using `_e` instead
Dec 12 07:43:55.491 INFO [stderr]    |
Dec 12 07:43:55.491 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 07:43:55.491 INFO [stderr] 
Dec 12 07:43:55.493 INFO [stderr] warning: unused variable: `len`
Dec 12 07:43:55.493 INFO [stderr]    --> src/ser.rs:234:28
Dec 12 07:43:55.493 INFO [stderr]     |
Dec 12 07:43:55.493 INFO [stderr] 234 |     fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq> {
Dec 12 07:43:55.493 INFO [stderr]     |                            ^^^ help: consider using `_len` instead
Dec 12 07:43:55.493 INFO [stderr] 
Dec 12 07:43:55.493 INFO [stderr] warning: unused variable: `len`
Dec 12 07:43:55.493 INFO [stderr]    --> src/ser.rs:243:30
Dec 12 07:43:55.493 INFO [stderr]     |
Dec 12 07:43:55.493 INFO [stderr] 243 |     fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple> {
Dec 12 07:43:55.493 INFO [stderr]     |                              ^^^ help: consider using `_len` instead
Dec 12 07:43:55.493 INFO [stderr] 
Dec 12 07:43:55.493 INFO [stderr] warning: unused variable: `name`
Dec 12 07:43:55.493 INFO [stderr]    --> src/ser.rs:250:31
Dec 12 07:43:55.493 INFO [stderr]     |
Dec 12 07:43:55.493 INFO [stderr] 250 |                               name: &'static str,
Dec 12 07:43:55.493 INFO [stderr]     |                               ^^^^ help: consider using `_name` instead
Dec 12 07:43:55.493 INFO [stderr] 
Dec 12 07:43:55.493 INFO [stderr] warning: unused variable: `len`
Dec 12 07:43:55.493 INFO [stderr]    --> src/ser.rs:251:31
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 251 |                               len: usize)
Dec 12 07:43:55.494 INFO [stderr]     |                               ^^^ help: consider using `_len` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `name`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:260:32
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 260 |                                name: &'static str,
Dec 12 07:43:55.494 INFO [stderr]     |                                ^^^^ help: consider using `_name` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `variant_index`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:261:32
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 261 |                                variant_index: u32,
Dec 12 07:43:55.494 INFO [stderr]     |                                ^^^^^^^^^^^^^ help: consider using `_variant_index` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `variant`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:262:32
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 262 |                                variant: &'static str,
Dec 12 07:43:55.494 INFO [stderr]     |                                ^^^^^^^ help: consider using `_variant` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `len`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:263:32
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 263 |                                len: usize)
Dec 12 07:43:55.494 INFO [stderr]     |                                ^^^ help: consider using `_len` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `len`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:269:28
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 269 |     fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap> {
Dec 12 07:43:55.494 INFO [stderr]     |                            ^^^ help: consider using `_len` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `name`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:287:33
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 287 |                                 name: &'static str,
Dec 12 07:43:55.494 INFO [stderr]     |                                 ^^^^ help: consider using `_name` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `variant_index`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:288:33
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 288 |                                 variant_index: u32,
Dec 12 07:43:55.494 INFO [stderr]     |                                 ^^^^^^^^^^^^^ help: consider using `_variant_index` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `variant`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:289:33
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 289 |                                 variant: &'static str,
Dec 12 07:43:55.494 INFO [stderr]     |                                 ^^^^^^^ help: consider using `_variant` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `len`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:290:33
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 290 |                                 len: usize)
Dec 12 07:43:55.494 INFO [stderr]     |                                 ^^^ help: consider using `_len` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `value`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:314:40
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 314 |     fn serialize_element<T>(&mut self, value: &T) -> Result<()>
Dec 12 07:43:55.494 INFO [stderr]     |                                        ^^^^^ help: consider using `_value` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `value`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:331:40
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 331 |     fn serialize_element<T>(&mut self, value: &T) -> Result<()>
Dec 12 07:43:55.494 INFO [stderr]     |                                        ^^^^^ help: consider using `_value` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `value`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:347:38
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 347 |     fn serialize_field<T>(&mut self, value: &T) -> Result<()>
Dec 12 07:43:55.494 INFO [stderr]     |                                      ^^^^^ help: consider using `_value` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `value`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:371:38
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 371 |     fn serialize_field<T>(&mut self, value: &T) -> Result<()>
Dec 12 07:43:55.494 INFO [stderr]     |                                      ^^^^^ help: consider using `_value` instead
Dec 12 07:43:55.494 INFO [stderr] 
Dec 12 07:43:55.494 INFO [stderr] warning: unused variable: `key`
Dec 12 07:43:55.494 INFO [stderr]    --> src/ser.rs:402:36
Dec 12 07:43:55.494 INFO [stderr]     |
Dec 12 07:43:55.494 INFO [stderr] 402 |     fn serialize_key<T>(&mut self, key: &T) -> Result<()>
Dec 12 07:43:55.495 INFO [stderr]     |                                    ^^^ help: consider using `_key` instead
Dec 12 07:43:55.495 INFO [stderr] 
Dec 12 07:43:55.495 INFO [stderr] warning: unused variable: `value`
Dec 12 07:43:55.495 INFO [stderr]    --> src/ser.rs:411:38
Dec 12 07:43:55.495 INFO [stderr]     |
Dec 12 07:43:55.495 INFO [stderr] 411 |     fn serialize_value<T>(&mut self, value: &T) -> Result<()>
Dec 12 07:43:55.495 INFO [stderr]     |                                      ^^^^^ help: consider using `_value` instead
Dec 12 07:43:55.495 INFO [stderr] 
Dec 12 07:43:55.509 INFO [stderr] warning: unused variable: `key`
Dec 12 07:43:55.509 INFO [stderr]    --> src/ser.rs:448:38
Dec 12 07:43:55.509 INFO [stderr]     |
Dec 12 07:43:55.509 INFO [stderr] 448 |     fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
Dec 12 07:43:55.509 INFO [stderr]     |                                      ^^^ help: consider using `_key` instead
Dec 12 07:43:55.509 INFO [stderr] 
Dec 12 07:43:55.510 INFO [stderr] warning: unused variable: `value`
Dec 12 07:43:55.510 INFO [stderr]    --> src/ser.rs:448:57
Dec 12 07:43:55.510 INFO [stderr]     |
Dec 12 07:43:55.510 INFO [stderr] 448 |     fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
Dec 12 07:43:55.510 INFO [stderr]     |                                                         ^^^^^ help: consider using `_value` instead
Dec 12 07:43:55.510 INFO [stderr] 
Dec 12 07:43:55.606 INFO [stderr] warning: function is never used: `to_pretty_writer`
Dec 12 07:43:55.606 INFO [stderr]   --> src/ser.rs:48:1
Dec 12 07:43:55.606 INFO [stderr]    |
Dec 12 07:43:55.607 INFO [stderr] 48 | / pub fn to_pretty_writer<W, T: ?Sized>(writer: W, value: &T) -> Result<()>
Dec 12 07:43:55.607 INFO [stderr] 49 | |     where W: io::Write,
Dec 12 07:43:55.607 INFO [stderr] 50 | |           T: ser::Serialize
Dec 12 07:43:55.607 INFO [stderr] 51 | | {
Dec 12 07:43:55.607 INFO [stderr] ...  |
Dec 12 07:43:55.607 INFO [stderr] 54 | |     Ok(())
Dec 12 07:43:55.607 INFO [stderr] 55 | | }
Dec 12 07:43:55.607 INFO [stderr]    | |_^
Dec 12 07:43:55.607 INFO [stderr]    |
Dec 12 07:43:55.607 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 07:43:55.607 INFO [stderr] 
Dec 12 07:43:55.609 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 07:43:55.609 INFO [stderr]    --> src/ser.rs:470:5
Dec 12 07:43:55.609 INFO [stderr]     |
Dec 12 07:43:55.609 INFO [stderr] 470 |     to_writer(&mut writer, &test);
Dec 12 07:43:55.609 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:43:55.609 INFO [stderr]     |
Dec 12 07:43:55.609 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 12 07:43:55.609 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 07:43:55.609 INFO [stderr] 
Dec 12 07:43:55.640 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
Dec 12 07:43:55.648 INFO [stderr] su: No module specific data is present
Dec 12 07:43:56.082 INFO running `"docker" "inspect" "ecfb6881e079fd6b80aaaf223f59c9d25a45863b367fa8714ce38e900a3770d6"`
Dec 12 07:43:56.246 INFO running `"docker" "rm" "-f" "ecfb6881e079fd6b80aaaf223f59c9d25a45863b367fa8714ce38e900a3770d6"`
Dec 12 07:43:56.432 INFO [stdout] ecfb6881e079fd6b80aaaf223f59c9d25a45863b367fa8714ce38e900a3770d6