[INFO] crate serde_bencode 0.2.0 is already in cache
[INFO] extracting crate serde_bencode 0.2.0 into work/ex/clippy-test-run/sources/stable/reg/serde_bencode/0.2.0
[INFO] extracting crate serde_bencode 0.2.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/serde_bencode/0.2.0
[INFO] validating manifest of serde_bencode-0.2.0 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 serde_bencode-0.2.0 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 serde_bencode-0.2.0
[INFO] finished frobbing serde_bencode-0.2.0
[INFO] frobbed toml for serde_bencode-0.2.0 written to work/ex/clippy-test-run/sources/stable/reg/serde_bencode/0.2.0/Cargo.toml
[INFO] started frobbing serde_bencode-0.2.0
[INFO] finished frobbing serde_bencode-0.2.0
[INFO] frobbed toml for serde_bencode-0.2.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/serde_bencode/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 serde_bencode-0.2.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/serde_bencode/0.2.0:/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] 67035602e2fee7a2ec329609883bb72f7cc73ea2367e74d4e41ead7587cb5922
[INFO] running `"docker" "start" "-a" "67035602e2fee7a2ec329609883bb72f7cc73ea2367e74d4e41ead7587cb5922"`
[INFO] [stderr]     Checking serde_bencode v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ser/mod.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |             ser: ser,
[INFO] [stderr]    |             ^^^^^^^^ help: replace it with: `ser`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/de.rs:13:25
[INFO] [stderr]    |
[INFO] [stderr] 13 |         BencodeAccess { de: de, len: len }
[INFO] [stderr]    |                         ^^^^^^ help: replace it with: `de`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/de.rs:13:33
[INFO] [stderr]    |
[INFO] [stderr] 13 |         BencodeAccess { de: de, len: len }
[INFO] [stderr]    |                                 ^^^^^^^^ help: replace it with: `len`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/de.rs:142:13
[INFO] [stderr]     |
[INFO] [stderr] 142 |             reader: reader,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^ help: replace it with: `reader`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ser/mod.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |             ser: ser,
[INFO] [stderr]    |             ^^^^^^^^ help: replace it with: `ser`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/de.rs:13:25
[INFO] [stderr]    |
[INFO] [stderr] 13 |         BencodeAccess { de: de, len: len }
[INFO] [stderr]    |                         ^^^^^^ help: replace it with: `de`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/de.rs:13:33
[INFO] [stderr]    |
[INFO] [stderr] 13 |         BencodeAccess { de: de, len: len }
[INFO] [stderr]    |                                 ^^^^^^^^ help: replace it with: `len`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/de.rs:142:13
[INFO] [stderr]     |
[INFO] [stderr] 142 |             reader: reader,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^ help: replace it with: `reader`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: casting i8 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser/string.rs:38:28
[INFO] [stderr]    |
[INFO] [stderr] 38 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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 i16 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser/string.rs:41:28
[INFO] [stderr]    |
[INFO] [stderr] 41 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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/ser/string.rs:44:28
[INFO] [stderr]    |
[INFO] [stderr] 44 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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 u8 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser/string.rs:50:28
[INFO] [stderr]    |
[INFO] [stderr] 50 |         self.serialize_u64(value as u64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `u64::from(value)`
[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 u16 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser/string.rs:53:28
[INFO] [stderr]    |
[INFO] [stderr] 53 |         self.serialize_u64(value as u64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `u64::from(value)`
[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 u32 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser/string.rs:56:28
[INFO] [stderr]    |
[INFO] [stderr] 56 |         self.serialize_u64(value as u64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `u64::from(value)`
[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 f32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser/string.rs:62:28
[INFO] [stderr]    |
[INFO] [stderr] 62 |         self.serialize_f64(value as f64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `f64::from(value)`
[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: you should consider deriving a `Default` implementation for `ser::Serializer`
[INFO] [stderr]   --> src/ser/mod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | /     pub fn new() -> Serializer {
[INFO] [stderr] 15 | |         Serializer { buf: Vec::new() }
[INFO] [stderr] 16 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 9  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]    --> src/ser/mod.rs:123:14
[INFO] [stderr]     |
[INFO] [stderr] 123 |               .ok_or(Error::InvalidValue("`serialize_value` called without calling `serialize_key`"
[INFO] [stderr]     |  ______________^
[INFO] [stderr] 124 | |                                            .to_string()))?;
[INFO] [stderr]     | |_________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 123 |             .ok_or_else(|| Error::InvalidValue("`serialize_value` called without calling `serialize_key`"
[INFO] [stderr] 124 |                                            .to_string()))?;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i8 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/ser/mod.rs:199:28
[INFO] [stderr]     |
[INFO] [stderr] 199 |         self.serialize_i64(value as i64)
[INFO] [stderr]     |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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 i16 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/ser/mod.rs:202:28
[INFO] [stderr]     |
[INFO] [stderr] 202 |         self.serialize_i64(value as i64)
[INFO] [stderr]     |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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/ser/mod.rs:205:28
[INFO] [stderr]     |
[INFO] [stderr] 205 |         self.serialize_i64(value as i64)
[INFO] [stderr]     |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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 u8 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/ser/mod.rs:214:28
[INFO] [stderr]     |
[INFO] [stderr] 214 |         self.serialize_i64(value as i64)
[INFO] [stderr]     |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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 u16 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/ser/mod.rs:217:28
[INFO] [stderr]     |
[INFO] [stderr] 217 |         self.serialize_i64(value as i64)
[INFO] [stderr]     |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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 u32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/ser/mod.rs:220:28
[INFO] [stderr]     |
[INFO] [stderr] 220 |         self.serialize_i64(value as i64)
[INFO] [stderr]     |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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: the `r @ _` pattern can be written as just `r`
[INFO] [stderr]   --> src/de.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |             r @ _ => {
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/de.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 | /         match self.len {
[INFO] [stderr] 31 | |             Some(l) => {
[INFO] [stderr] 32 | |                 let l = l - 1;
[INFO] [stderr] 33 | |                 self.len = Some(l);
[INFO] [stderr] ...  |
[INFO] [stderr] 38 | |             None => (),
[INFO] [stderr] 39 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 30 |         if let Some(l) = self.len {
[INFO] [stderr] 31 |     let l = l - 1;
[INFO] [stderr] 32 |     self.len = Some(l);
[INFO] [stderr] 33 |     if l == 0 && ParseResult::End != self.de.parse()? {
[INFO] [stderr] 34 |         return Err(Error::InvalidType("expected `e`".to_string()));
[INFO] [stderr] 35 |     }
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: the `r @ _` pattern can be written as just `r`
[INFO] [stderr]   --> src/de.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |             r @ _ => {
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `t @ _` pattern can be written as just `t`
[INFO] [stderr]    --> src/de.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |             t @ _ => Err(Error::InvalidValue(format!("Expected bytes or map; got `{:?}`", t))),
[INFO] [stderr]     |             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `c @ _` pattern can be written as just `c`
[INFO] [stderr]    --> src/de.rs:226:13
[INFO] [stderr]     |
[INFO] [stderr] 226 |             c @ _ => Err(Error::InvalidValue(format!("Invalid character `{}`", c as char))),
[INFO] [stderr]     |             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: casting i8 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser/string.rs:38:28
[INFO] [stderr]    |
[INFO] [stderr] 38 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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 i16 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser/string.rs:41:28
[INFO] [stderr]    |
[INFO] [stderr] 41 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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/ser/string.rs:44:28
[INFO] [stderr]    |
[INFO] [stderr] 44 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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 u8 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser/string.rs:50:28
[INFO] [stderr]    |
[INFO] [stderr] 50 |         self.serialize_u64(value as u64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `u64::from(value)`
[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 u16 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser/string.rs:53:28
[INFO] [stderr]    |
[INFO] [stderr] 53 |         self.serialize_u64(value as u64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `u64::from(value)`
[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 u32 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser/string.rs:56:28
[INFO] [stderr]    |
[INFO] [stderr] 56 |         self.serialize_u64(value as u64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `u64::from(value)`
[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 f32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser/string.rs:62:28
[INFO] [stderr]    |
[INFO] [stderr] 62 |         self.serialize_f64(value as f64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `f64::from(value)`
[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: you should consider deriving a `Default` implementation for `ser::Serializer`
[INFO] [stderr]   --> src/ser/mod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | /     pub fn new() -> Serializer {
[INFO] [stderr] 15 | |         Serializer { buf: Vec::new() }
[INFO] [stderr] 16 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 9  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]    --> src/ser/mod.rs:123:14
[INFO] [stderr]     |
[INFO] [stderr] 123 |               .ok_or(Error::InvalidValue("`serialize_value` called without calling `serialize_key`"
[INFO] [stderr]     |  ______________^
[INFO] [stderr] 124 | |                                            .to_string()))?;
[INFO] [stderr]     | |_________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 123 |             .ok_or_else(|| Error::InvalidValue("`serialize_value` called without calling `serialize_key`"
[INFO] [stderr] 124 |                                            .to_string()))?;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i8 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/ser/mod.rs:199:28
[INFO] [stderr]     |
[INFO] [stderr] 199 |         self.serialize_i64(value as i64)
[INFO] [stderr]     |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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 i16 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/ser/mod.rs:202:28
[INFO] [stderr]     |
[INFO] [stderr] 202 |         self.serialize_i64(value as i64)
[INFO] [stderr]     |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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/ser/mod.rs:205:28
[INFO] [stderr]     |
[INFO] [stderr] 205 |         self.serialize_i64(value as i64)
[INFO] [stderr]     |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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 u8 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/ser/mod.rs:214:28
[INFO] [stderr]     |
[INFO] [stderr] 214 |         self.serialize_i64(value as i64)
[INFO] [stderr]     |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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 u16 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/ser/mod.rs:217:28
[INFO] [stderr]     |
[INFO] [stderr] 217 |         self.serialize_i64(value as i64)
[INFO] [stderr]     |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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 u32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/ser/mod.rs:220:28
[INFO] [stderr]     |
[INFO] [stderr] 220 |         self.serialize_i64(value as i64)
[INFO] [stderr]     |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[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: the `r @ _` pattern can be written as just `r`
[INFO] [stderr]   --> src/de.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |             r @ _ => {
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/de.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 | /         match self.len {
[INFO] [stderr] 31 | |             Some(l) => {
[INFO] [stderr] 32 | |                 let l = l - 1;
[INFO] [stderr] 33 | |                 self.len = Some(l);
[INFO] [stderr] ...  |
[INFO] [stderr] 38 | |             None => (),
[INFO] [stderr] 39 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 30 |         if let Some(l) = self.len {
[INFO] [stderr] 31 |     let l = l - 1;
[INFO] [stderr] 32 |     self.len = Some(l);
[INFO] [stderr] 33 |     if l == 0 && ParseResult::End != self.de.parse()? {
[INFO] [stderr] 34 |         return Err(Error::InvalidType("expected `e`".to_string()));
[INFO] [stderr] 35 |     }
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: the `r @ _` pattern can be written as just `r`
[INFO] [stderr]   --> src/de.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |             r @ _ => {
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `t @ _` pattern can be written as just `t`
[INFO] [stderr]    --> src/de.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |             t @ _ => Err(Error::InvalidValue(format!("Expected bytes or map; got `{:?}`", t))),
[INFO] [stderr]     |             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `c @ _` pattern can be written as just `c`
[INFO] [stderr]    --> src/de.rs:226:13
[INFO] [stderr]     |
[INFO] [stderr] 226 |             c @ _ => Err(Error::InvalidValue(format!("Invalid character `{}`", c as char))),
[INFO] [stderr]     |             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> benches/benches.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `serde_bencode`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]   --> examples/parse_torrent.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 | /     if let &Some(ref al) = &torrent.announce_list {
[INFO] [stderr] 72 | |         for a in al {
[INFO] [stderr] 73 | |             println!("announce list:\t{}", a[0]);
[INFO] [stderr] 74 | |         }
[INFO] [stderr] 75 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 71 |     if let Some(ref al) = torrent.announce_list {
[INFO] [stderr]    |            ^^^^^^^^^^^^   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]   --> examples/parse_torrent.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 | /     if let &Some(ref files) = &torrent.info.files {
[INFO] [stderr] 87 | |         for f in files {
[INFO] [stderr] 88 | |             println!("file path:\t{:?}", f.path);
[INFO] [stderr] 89 | |             println!("file length:\t{}", f.length);
[INFO] [stderr] 90 | |             println!("file md5sum:\t{:?}", f.md5sum);
[INFO] [stderr] 91 | |         }
[INFO] [stderr] 92 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 86 |     if let Some(ref files) = torrent.info.files {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "67035602e2fee7a2ec329609883bb72f7cc73ea2367e74d4e41ead7587cb5922"`
[INFO] running `"docker" "rm" "-f" "67035602e2fee7a2ec329609883bb72f7cc73ea2367e74d4e41ead7587cb5922"`
[INFO] [stdout] 67035602e2fee7a2ec329609883bb72f7cc73ea2367e74d4e41ead7587cb5922