[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/clippy-test-run/sources/stable/gh/Pyrlang/Term"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Pyrlang/Term'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Pyrlang/Term" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Pyrlang/Term"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Pyrlang/Term'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 85bdc60a1b54e638f1dcfe930cd9ce18df89fecb
[INFO] sha for GitHub repo Pyrlang/Term: 85bdc60a1b54e638f1dcfe930cd9ce18df89fecb
[INFO] validating manifest of Pyrlang/Term on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Pyrlang/Term on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "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/clippy-test-run/sources/stable/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/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Pyrlang/Term/Cargo.toml
[INFO] crate Pyrlang/Term has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting Pyrlang/Term against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/Pyrlang/Term:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e19aae5f473c9bc24afdafe16fae6b75b2916cc5a0003f60f8608db5b9f01d49
[INFO] running `"docker" "start" "-a" "e19aae5f473c9bc24afdafe16fae6b75b2916cc5a0003f60f8608db5b9f01d49"`
[INFO] [stderr]    Compiling cpython v0.2.0
[INFO] [stderr]     Checking byte v0.2.3
[INFO] [stderr]     Checking empty v0.0.4
[INFO] [stderr]    Compiling python3-sys v0.2.0
[INFO] [stderr]     Checking compress v0.1.2
[INFO] [stderr]     Checking native_codec_impl v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:56:9
[INFO] [stderr]    |
[INFO] [stderr] 56 |         return self.write_int(val)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_int(val)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         return self.write_float(val)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_float(val)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |         return Ok(())
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |         return Ok(())
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:76:9
[INFO] [stderr]    |
[INFO] [stderr] 76 |         return Ok(())
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:78:17
[INFO] [stderr]    |
[INFO] [stderr] 78 |       "Atom" => return self.write_atom(&term),
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_atom(&term)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |         return self.write_str(&as_str)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_str(&as_str)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 | /         return self.write_atom_from_cow(
[INFO] [stderr] 86 | |           if val { Cow::from("true") } else { Cow::from("false") }
[INFO] [stderr] 87 | |         )
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 85 |         self.write_atom_from_cow(
[INFO] [stderr] 86 |           if val { Cow::from("true") } else { Cow::from("false") }
[INFO] [stderr] 87 |         )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:89:21
[INFO] [stderr]    |
[INFO] [stderr] 89 |       "NoneType" => return self.write_atom_from_cow(Cow::from("undefined")),
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_atom_from_cow(Cow::from("undefined"))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         return self.encode(&tail)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.encode(&tail)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:97:16
[INFO] [stderr]    |
[INFO] [stderr] 97 |       "Pid" => return self.write_pid(&term),
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_pid(&term)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:98:22
[INFO] [stderr]    |
[INFO] [stderr] 98 |       "Reference" => return self.write_ref(&term),
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_ref(&term)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         return self.write_binary(&py_bytes)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_binary(&py_bytes)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:103:22
[INFO] [stderr]     |
[INFO] [stderr] 103 |       "BitString" => return self.write_bitstring(&term),
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_bitstring(&term)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:105:16
[INFO] [stderr]     |
[INFO] [stderr] 105 |       other => return self.write_unknown_object(type_name_ref, &term)
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_unknown_object(type_name_ref, &term)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:118:9
[INFO] [stderr]     |
[INFO] [stderr] 118 |         return self.encode(&repr1)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.encode(&repr1)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:123:11
[INFO] [stderr]     |
[INFO] [stderr] 123 |           return self.encode(&repr2)
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.encode(&repr2)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:125:19
[INFO] [stderr]     |
[INFO] [stderr] 125 |         Err(_) => return self.write_generic_unknown_object(&py_term),
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_generic_unknown_object(&py_term)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     return self.encode(&result)
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.encode(&result)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:377:3
[INFO] [stderr]     |
[INFO] [stderr] 377 |   return true // will fit in a 255-byte latin-1 string
[INFO] [stderr]     |   ^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:56:9
[INFO] [stderr]    |
[INFO] [stderr] 56 |         return self.write_int(val)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_int(val)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         return self.write_float(val)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_float(val)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |         return Ok(())
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |         return Ok(())
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:76:9
[INFO] [stderr]    |
[INFO] [stderr] 76 |         return Ok(())
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:78:17
[INFO] [stderr]    |
[INFO] [stderr] 78 |       "Atom" => return self.write_atom(&term),
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_atom(&term)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |         return self.write_str(&as_str)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_str(&as_str)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 | /         return self.write_atom_from_cow(
[INFO] [stderr] 86 | |           if val { Cow::from("true") } else { Cow::from("false") }
[INFO] [stderr] 87 | |         )
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 85 |         self.write_atom_from_cow(
[INFO] [stderr] 86 |           if val { Cow::from("true") } else { Cow::from("false") }
[INFO] [stderr] 87 |         )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:89:21
[INFO] [stderr]    |
[INFO] [stderr] 89 |       "NoneType" => return self.write_atom_from_cow(Cow::from("undefined")),
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_atom_from_cow(Cow::from("undefined"))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         return self.encode(&tail)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.encode(&tail)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:97:16
[INFO] [stderr]    |
[INFO] [stderr] 97 |       "Pid" => return self.write_pid(&term),
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_pid(&term)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoder.rs:98:22
[INFO] [stderr]    |
[INFO] [stderr] 98 |       "Reference" => return self.write_ref(&term),
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_ref(&term)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         return self.write_binary(&py_bytes)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_binary(&py_bytes)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:103:22
[INFO] [stderr]     |
[INFO] [stderr] 103 |       "BitString" => return self.write_bitstring(&term),
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_bitstring(&term)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:105:16
[INFO] [stderr]     |
[INFO] [stderr] 105 |       other => return self.write_unknown_object(type_name_ref, &term)
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_unknown_object(type_name_ref, &term)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:118:9
[INFO] [stderr]     |
[INFO] [stderr] 118 |         return self.encode(&repr1)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.encode(&repr1)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:123:11
[INFO] [stderr]     |
[INFO] [stderr] 123 |           return self.encode(&repr2)
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.encode(&repr2)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:125:19
[INFO] [stderr]     |
[INFO] [stderr] 125 |         Err(_) => return self.write_generic_unknown_object(&py_term),
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write_generic_unknown_object(&py_term)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     return self.encode(&result)
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.encode(&result)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/encoder.rs:377:3
[INFO] [stderr]     |
[INFO] [stderr] 377 |   return true // will fit in a 255-byte latin-1 string
[INFO] [stderr]     |   ^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/decoder.rs:493:9
[INFO] [stderr]     |
[INFO] [stderr] 493 |     let size = in_bytes.read_with::<u32>(offset, byte::BE)?;
[INFO] [stderr]     |         ^^^^ help: consider using `_size` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]    --> src/encoder.rs:105:7
[INFO] [stderr]     |
[INFO] [stderr] 105 |       other => return self.write_unknown_object(type_name_ref, &term)
[INFO] [stderr]     |       ^^^^^ help: consider using `_other` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/encoder.rs:114:38
[INFO] [stderr]     |
[INFO] [stderr] 114 |   fn write_unknown_object(&mut self, name: &str, py_term: &PyObject) -> CodecResult<()> {
[INFO] [stderr]     |                                      ^^^^ help: consider using `_name` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/decoder.rs:413:9
[INFO] [stderr]     |
[INFO] [stderr] 413 |     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:421:7
[INFO] [stderr]     |
[INFO] [stderr] 421 |       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 variable: `size`
[INFO] [stderr]    --> src/decoder.rs:493:9
[INFO] [stderr]     |
[INFO] [stderr] 493 |     let size = in_bytes.read_with::<u32>(offset, byte::BE)?;
[INFO] [stderr]     |         ^^^^ help: consider using `_size` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]    --> src/encoder.rs:105:7
[INFO] [stderr]     |
[INFO] [stderr] 105 |       other => return self.write_unknown_object(type_name_ref, &term)
[INFO] [stderr]     |       ^^^^^ help: consider using `_other` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/encoder.rs:114:38
[INFO] [stderr]     |
[INFO] [stderr] 114 |   fn write_unknown_object(&mut self, name: &str, py_term: &PyObject) -> CodecResult<()> {
[INFO] [stderr]     |                                      ^^^^ help: consider using `_name` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/encoder.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |         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:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |         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:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 |         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:94:9
[INFO] [stderr]    |
[INFO] [stderr] 94 |         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:154:5
[INFO] [stderr]     |
[INFO] [stderr] 154 |     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:158:7
[INFO] [stderr]     |
[INFO] [stderr] 158 |       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:172:7
[INFO] [stderr]     |
[INFO] [stderr] 172 |       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:177:7
[INFO] [stderr]     |
[INFO] [stderr] 177 |       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:188:5
[INFO] [stderr]     |
[INFO] [stderr] 188 |     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:191:7
[INFO] [stderr]     |
[INFO] [stderr] 191 |       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:192:7
[INFO] [stderr]     |
[INFO] [stderr] 192 |       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: casting u8 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/encoder.rs:200:27
[INFO] [stderr]     |
[INFO] [stderr] 200 |     if val >= 0 && val <= u8::MAX as i64 {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^ help: try: `i64::from(u8::MAX)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/encoder.rs:203:22
[INFO] [stderr]     |
[INFO] [stderr] 203 |     } else if val >= i32::MIN as i64
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^ help: try: `i64::from(i32::MIN)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/encoder.rs:204:19
[INFO] [stderr]     |
[INFO] [stderr] 204 |         && val <= i32::MAX as i64 {
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^ help: try: `i64::from(i32::MAX)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/encoder.rs:206:7
[INFO] [stderr]     |
[INFO] [stderr] 206 |       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:218:5
[INFO] [stderr]     |
[INFO] [stderr] 218 |     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:241:7
[INFO] [stderr]     |
[INFO] [stderr] 241 |       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:244:7
[INFO] [stderr]     |
[INFO] [stderr] 244 |       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:245:7
[INFO] [stderr]     |
[INFO] [stderr] 245 |       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:265:7
[INFO] [stderr]     |
[INFO] [stderr] 265 |       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:266:7
[INFO] [stderr]     |
[INFO] [stderr] 266 |       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:271:7
[INFO] [stderr]     |
[INFO] [stderr] 271 |       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:299:5
[INFO] [stderr]     |
[INFO] [stderr] 299 |     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:300:5
[INFO] [stderr]     |
[INFO] [stderr] 300 |     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:301:5
[INFO] [stderr]     |
[INFO] [stderr] 301 |     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:324:5
[INFO] [stderr]     |
[INFO] [stderr] 324 |     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:325:5
[INFO] [stderr]     |
[INFO] [stderr] 325 |     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:327:5
[INFO] [stderr]     |
[INFO] [stderr] 327 |     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:338:5
[INFO] [stderr]     |
[INFO] [stderr] 338 |     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:339:5
[INFO] [stderr]     |
[INFO] [stderr] 339 |     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:356:5
[INFO] [stderr]     |
[INFO] [stderr] 356 |     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:358:5
[INFO] [stderr]     |
[INFO] [stderr] 358 |     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: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/encoder.rs:373:20
[INFO] [stderr]     |
[INFO] [stderr] 373 |     if ch as u32 > u8::MAX as u32 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: try: `u32::from(u8::MAX)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/decoder.rs:413:9
[INFO] [stderr]     |
[INFO] [stderr] 413 |     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: transmute from a reference to a reference
[INFO] [stderr]   --> src/lib.rs:36:1
[INFO] [stderr]    |
[INFO] [stderr] 36 | py_exception!(term_codec, PyCodecError);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::transmute_ptr_to_ptr)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#transmute_ptr_to_ptr
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/decoder.rs:421:7
[INFO] [stderr]     |
[INFO] [stderr] 421 |       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:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |         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:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |         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:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 |         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:94:9
[INFO] [stderr]    |
[INFO] [stderr] 94 |         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:154:5
[INFO] [stderr]     |
[INFO] [stderr] 154 |     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:158:7
[INFO] [stderr]     |
[INFO] [stderr] 158 |       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:172:7
[INFO] [stderr]     |
[INFO] [stderr] 172 |       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:177:7
[INFO] [stderr]     |
[INFO] [stderr] 177 |       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:188:5
[INFO] [stderr]     |
[INFO] [stderr] 188 |     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:191:7
[INFO] [stderr]     |
[INFO] [stderr] 191 |       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:192:7
[INFO] [stderr]     |
[INFO] [stderr] 192 |       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: casting u8 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/encoder.rs:200:27
[INFO] [stderr]     |
[INFO] [stderr] 200 |     if val >= 0 && val <= u8::MAX as i64 {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^ help: try: `i64::from(u8::MAX)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/encoder.rs:203:22
[INFO] [stderr]     |
[INFO] [stderr] 203 |     } else if val >= i32::MIN as i64
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^ help: try: `i64::from(i32::MIN)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/encoder.rs:204:19
[INFO] [stderr]     |
[INFO] [stderr] 204 |         && val <= i32::MAX as i64 {
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^ help: try: `i64::from(i32::MAX)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/encoder.rs:206:7
[INFO] [stderr]     |
[INFO] [stderr] 206 |       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:218:5
[INFO] [stderr]     |
[INFO] [stderr] 218 |     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:241:7
[INFO] [stderr]     |
[INFO] [stderr] 241 |       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:244:7
[INFO] [stderr]     |
[INFO] [stderr] 244 |       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:245:7
[INFO] [stderr]     |
[INFO] [stderr] 245 |       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:265:7
[INFO] [stderr]     |
[INFO] [stderr] 265 |       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:266:7
[INFO] [stderr]     |
[INFO] [stderr] 266 |       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:271:7
[INFO] [stderr]     |
[INFO] [stderr] 271 |       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:299:5
[INFO] [stderr]     |
[INFO] [stderr] 299 |     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:300:5
[INFO] [stderr]     |
[INFO] [stderr] 300 |     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:301:5
[INFO] [stderr]     |
[INFO] [stderr] 301 |     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:324:5
[INFO] [stderr]     |
[INFO] [stderr] 324 |     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:325:5
[INFO] [stderr]     |
[INFO] [stderr] 325 |     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:327:5
[INFO] [stderr]     |
[INFO] [stderr] 327 |     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:338:5
[INFO] [stderr]     |
[INFO] [stderr] 338 |     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:339:5
[INFO] [stderr]     |
[INFO] [stderr] 339 |     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:356:5
[INFO] [stderr]     |
[INFO] [stderr] 356 |     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:358:5
[INFO] [stderr]     |
[INFO] [stderr] 358 |     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: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/encoder.rs:373:20
[INFO] [stderr]     |
[INFO] [stderr] 373 |     if ch as u32 > u8::MAX as u32 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: try: `u32::from(u8::MAX)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: transmute from a reference to a reference
[INFO] [stderr]   --> src/lib.rs:36:1
[INFO] [stderr]    |
[INFO] [stderr] 36 | py_exception!(term_codec, PyCodecError);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::transmute_ptr_to_ptr)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#transmute_ptr_to_ptr
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.12s
[INFO] running `"docker" "inspect" "e19aae5f473c9bc24afdafe16fae6b75b2916cc5a0003f60f8608db5b9f01d49"`
[INFO] running `"docker" "rm" "-f" "e19aae5f473c9bc24afdafe16fae6b75b2916cc5a0003f60f8608db5b9f01d49"`
[INFO] [stdout] e19aae5f473c9bc24afdafe16fae6b75b2916cc5a0003f60f8608db5b9f01d49