[INFO] updating cached repository Pyrlang/Term
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Pyrlang/Term
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Pyrlang/Term" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Pyrlang/Term"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Pyrlang/Term'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Pyrlang/Term" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/Pyrlang/Term"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/Pyrlang/Term'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 328168ef13f917a83a90141af816d3d1c4fb8b48
[INFO] sha for GitHub repo Pyrlang/Term: 328168ef13f917a83a90141af816d3d1c4fb8b48
[INFO] validating manifest of Pyrlang/Term on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Pyrlang/Term on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Pyrlang/Term
[INFO] finished frobbing Pyrlang/Term
[INFO] frobbed toml for Pyrlang/Term written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Pyrlang/Term/Cargo.toml
[INFO] started frobbing Pyrlang/Term
[INFO] finished frobbing Pyrlang/Term
[INFO] frobbed toml for Pyrlang/Term written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/Pyrlang/Term/Cargo.toml
[INFO] crate Pyrlang/Term already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Pyrlang/Term/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Pyrlang/Term against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-2/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Pyrlang/Term:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ab8049b33ebc27776738d6614d6ed72ba17eb203afc4a501ce01c3cfcff58c54
[INFO] running `"docker" "start" "-a" "ab8049b33ebc27776738d6614d6ed72ba17eb203afc4a501ce01c3cfcff58c54"`
[INFO] [stderr]    Compiling cpython v0.2.1
[INFO] [stderr]     Checking byte v0.2.3
[INFO] [stderr]     Checking empty v0.0.4
[INFO] [stderr]    Compiling python3-sys v0.2.1
[INFO] [stderr]     Checking compress v0.1.2
[INFO] [stderr]     Checking native_codec_impl v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/decoder.rs:524:9
[INFO] [stderr]     |
[INFO] [stderr] 524 |     let size = in_bytes.read_with::<u32>(offset, byte::BE)?;
[INFO] [stderr]     |         ^^^^ help: consider prefixing with an underscore: `_size`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]    --> src/encoder.rs:104:7
[INFO] [stderr]     |
[INFO] [stderr] 104 |       other => return self.write_unknown_object(type_name_ref, &term)
[INFO] [stderr]     |       ^^^^^ help: consider prefixing with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/encoder.rs:113:38
[INFO] [stderr]     |
[INFO] [stderr] 113 |   fn write_unknown_object(&mut self, name: &str, py_term: &PyObject) -> CodecResult<()> {
[INFO] [stderr]     |                                      ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/decoder.rs:524:9
[INFO] [stderr]     |
[INFO] [stderr] 524 |     let size = in_bytes.read_with::<u32>(offset, byte::BE)?;
[INFO] [stderr]     |         ^^^^ help: consider prefixing with an underscore: `_size`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]    --> src/encoder.rs:104:7
[INFO] [stderr]     |
[INFO] [stderr] 104 |       other => return self.write_unknown_object(type_name_ref, &term)
[INFO] [stderr]     |       ^^^^^ help: consider prefixing with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/encoder.rs:113:38
[INFO] [stderr]     |
[INFO] [stderr] 113 |   fn write_unknown_object(&mut self, name: &str, py_term: &PyObject) -> CodecResult<()> {
[INFO] [stderr]     |                                      ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/decoder.rs:444:9
[INFO] [stderr]     |
[INFO] [stderr] 444 |     let mut result = PyDict::new(self.py);
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/decoder.rs:444:9
[INFO] [stderr]     |
[INFO] [stderr] 444 |     let mut result = PyDict::new(self.py);
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/decoder.rs:452:7
[INFO] [stderr]     |
[INFO] [stderr] 452 |       result.set_item(self.py, py_key, py_val);
[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/encoder.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         self.write_list_no_tail(&as_list);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[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/encoder.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         self.write_tuple(&as_tup);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[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/encoder.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |         self.write_dict(&as_dict);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[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/encoder.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |         self.write_list_no_tail(&elements);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[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/encoder.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |     self.data.write_u32::<BigEndian>(size as u32);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:157:7
[INFO] [stderr]     |
[INFO] [stderr] 157 |       self.encode(&item);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:171:7
[INFO] [stderr]     |
[INFO] [stderr] 171 |       self.data.write_u32::<BigEndian>(size as u32);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:176:7
[INFO] [stderr]     |
[INFO] [stderr] 176 |       self.encode(&item);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:187:5
[INFO] [stderr]     |
[INFO] [stderr] 187 |     self.data.write_u32::<BigEndian>(size as u32);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:190:7
[INFO] [stderr]     |
[INFO] [stderr] 190 |       self.encode(&py_key);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:191:7
[INFO] [stderr]     |
[INFO] [stderr] 191 |       self.encode(&py_value);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:215:7
[INFO] [stderr]     |
[INFO] [stderr] 215 |       self.data.write_u32::<BigEndian>(size);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:226:7
[INFO] [stderr]     |
[INFO] [stderr] 226 |       self.data.write(data);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:231:7
[INFO] [stderr]     |
[INFO] [stderr] 231 |       self.data.write(data);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:244:7
[INFO] [stderr]     |
[INFO] [stderr] 244 |       self.data.write_i32::<BigEndian>(val as i32);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:256:5
[INFO] [stderr]     |
[INFO] [stderr] 256 |     self.data.write_f64::<BigEndian>(val);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:279:7
[INFO] [stderr]     |
[INFO] [stderr] 279 |       self.data.write(byte_array); // write &[u8] string content
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:282:7
[INFO] [stderr]     |
[INFO] [stderr] 282 |       self.data.write_u16::<BigEndian>(str_byte_length as u16); // 16bit length
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:283:7
[INFO] [stderr]     |
[INFO] [stderr] 283 |       self.data.write(byte_array); // write &[u8] string content
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:303:7
[INFO] [stderr]     |
[INFO] [stderr] 303 |       self.data.write_u16::<BigEndian>(str_byte_length as u16); // 16bit length
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:304:7
[INFO] [stderr]     |
[INFO] [stderr] 304 |       self.data.write(byte_array); // write &[u8] string content
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:309:7
[INFO] [stderr]     |
[INFO] [stderr] 309 |       self.data.write_u32::<BigEndian>(chars_count as u32); // chars, not bytes!
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:337:5
[INFO] [stderr]     |
[INFO] [stderr] 337 |     self.write_atom_from_cow(node_name.to_string(self.py)?);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:338:5
[INFO] [stderr]     |
[INFO] [stderr] 338 |     self.data.write_u32::<BigEndian>(id);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:339:5
[INFO] [stderr]     |
[INFO] [stderr] 339 |     self.data.write_u32::<BigEndian>(serial);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:362:5
[INFO] [stderr]     |
[INFO] [stderr] 362 |     self.data.write_u16::<BigEndian>((id.len() / 4) as u16);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:363:5
[INFO] [stderr]     |
[INFO] [stderr] 363 |     self.write_atom_from_cow(node_name.to_string(self.py)?);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:365:5
[INFO] [stderr]     |
[INFO] [stderr] 365 |     self.data.write(id);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:376:5
[INFO] [stderr]     |
[INFO] [stderr] 376 |     self.data.write_u32::<BigEndian>(data.len() as u32);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:377:5
[INFO] [stderr]     |
[INFO] [stderr] 377 |     self.data.write(data);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:394:5
[INFO] [stderr]     |
[INFO] [stderr] 394 |     self.data.write_u32::<BigEndian>(data.len() as u32);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:396:5
[INFO] [stderr]     |
[INFO] [stderr] 396 |     self.data.write(data);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/decoder.rs:452:7
[INFO] [stderr]     |
[INFO] [stderr] 452 |       result.set_item(self.py, py_key, py_val);
[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/encoder.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         self.write_list_no_tail(&as_list);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[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/encoder.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         self.write_tuple(&as_tup);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[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/encoder.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |         self.write_dict(&as_dict);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[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/encoder.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |         self.write_list_no_tail(&elements);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[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/encoder.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |     self.data.write_u32::<BigEndian>(size as u32);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:157:7
[INFO] [stderr]     |
[INFO] [stderr] 157 |       self.encode(&item);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:171:7
[INFO] [stderr]     |
[INFO] [stderr] 171 |       self.data.write_u32::<BigEndian>(size as u32);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:176:7
[INFO] [stderr]     |
[INFO] [stderr] 176 |       self.encode(&item);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:187:5
[INFO] [stderr]     |
[INFO] [stderr] 187 |     self.data.write_u32::<BigEndian>(size as u32);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:190:7
[INFO] [stderr]     |
[INFO] [stderr] 190 |       self.encode(&py_key);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:191:7
[INFO] [stderr]     |
[INFO] [stderr] 191 |       self.encode(&py_value);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:215:7
[INFO] [stderr]     |
[INFO] [stderr] 215 |       self.data.write_u32::<BigEndian>(size);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:226:7
[INFO] [stderr]     |
[INFO] [stderr] 226 |       self.data.write(data);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:231:7
[INFO] [stderr]     |
[INFO] [stderr] 231 |       self.data.write(data);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:244:7
[INFO] [stderr]     |
[INFO] [stderr] 244 |       self.data.write_i32::<BigEndian>(val as i32);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:256:5
[INFO] [stderr]     |
[INFO] [stderr] 256 |     self.data.write_f64::<BigEndian>(val);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:279:7
[INFO] [stderr]     |
[INFO] [stderr] 279 |       self.data.write(byte_array); // write &[u8] string content
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:282:7
[INFO] [stderr]     |
[INFO] [stderr] 282 |       self.data.write_u16::<BigEndian>(str_byte_length as u16); // 16bit length
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:283:7
[INFO] [stderr]     |
[INFO] [stderr] 283 |       self.data.write(byte_array); // write &[u8] string content
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:303:7
[INFO] [stderr]     |
[INFO] [stderr] 303 |       self.data.write_u16::<BigEndian>(str_byte_length as u16); // 16bit length
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:304:7
[INFO] [stderr]     |
[INFO] [stderr] 304 |       self.data.write(byte_array); // write &[u8] string content
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:309:7
[INFO] [stderr]     |
[INFO] [stderr] 309 |       self.data.write_u32::<BigEndian>(chars_count as u32); // chars, not bytes!
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:337:5
[INFO] [stderr]     |
[INFO] [stderr] 337 |     self.write_atom_from_cow(node_name.to_string(self.py)?);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:338:5
[INFO] [stderr]     |
[INFO] [stderr] 338 |     self.data.write_u32::<BigEndian>(id);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:339:5
[INFO] [stderr]     |
[INFO] [stderr] 339 |     self.data.write_u32::<BigEndian>(serial);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:362:5
[INFO] [stderr]     |
[INFO] [stderr] 362 |     self.data.write_u16::<BigEndian>((id.len() / 4) as u16);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:363:5
[INFO] [stderr]     |
[INFO] [stderr] 363 |     self.write_atom_from_cow(node_name.to_string(self.py)?);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:365:5
[INFO] [stderr]     |
[INFO] [stderr] 365 |     self.data.write(id);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:376:5
[INFO] [stderr]     |
[INFO] [stderr] 376 |     self.data.write_u32::<BigEndian>(data.len() as u32);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:377:5
[INFO] [stderr]     |
[INFO] [stderr] 377 |     self.data.write(data);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:394:5
[INFO] [stderr]     |
[INFO] [stderr] 394 |     self.data.write_u32::<BigEndian>(data.len() as u32);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/encoder.rs:396:5
[INFO] [stderr]     |
[INFO] [stderr] 396 |     self.data.write(data);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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 7.68s
[INFO] running `"docker" "inspect" "ab8049b33ebc27776738d6614d6ed72ba17eb203afc4a501ce01c3cfcff58c54"`
[INFO] running `"docker" "rm" "-f" "ab8049b33ebc27776738d6614d6ed72ba17eb203afc4a501ce01c3cfcff58c54"`
[INFO] [stdout] ab8049b33ebc27776738d6614d6ed72ba17eb203afc4a501ce01c3cfcff58c54