[INFO] fetching crate async_serde 0.1.0...
[INFO] checking async_serde-0.1.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate async_serde 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate async_serde 0.1.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async_serde 0.1.0
[INFO] finished tweaking crates.io crate async_serde 0.1.0
[INFO] tweaked toml for crates.io crate async_serde 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 25 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef512a236f123105fcd97ce044de0da48eabe0f6d919f558bfa9a132258469a4
[INFO] running `Command { std: "docker" "start" "-a" "ef512a236f123105fcd97ce044de0da48eabe0f6d919f558bfa9a132258469a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef512a236f123105fcd97ce044de0da48eabe0f6d919f558bfa9a132258469a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef512a236f123105fcd97ce044de0da48eabe0f6d919f558bfa9a132258469a4", kill_on_drop: false }`
[INFO] [stdout] ef512a236f123105fcd97ce044de0da48eabe0f6d919f558bfa9a132258469a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40cf748e87b422c23b2b326c84b12fe00c3c17805dc05d815a30711a87503c63
[INFO] running `Command { std: "docker" "start" "-a" "40cf748e87b422c23b2b326c84b12fe00c3c17805dc05d815a30711a87503c63", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking serde_json v1.0.127
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling async-trait v0.1.81
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking async_serde v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::InternalOp`
[INFO] [stdout]   --> src/de.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use super::InternalOp;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::InternalOp`
[INFO] [stdout]   --> src/de.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use super::InternalOp;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/lib.rs:417:9
[INFO] [stdout]     |
[INFO] [stdout] 417 |         f: Fun,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/lib.rs:417:9
[INFO] [stdout]     |
[INFO] [stdout] 417 |         f: Fun,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:174:28
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn visit_bool<E>(self, v: bool) -> Result<Self::Value, E>
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:180:26
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn visit_i8<E>(self, v: i8) -> Result<Self::Value, E>
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:174:28
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn visit_bool<E>(self, v: bool) -> Result<Self::Value, E>
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:186:27
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn visit_i16<E>(self, v: i16) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:180:26
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn visit_i8<E>(self, v: i8) -> Result<Self::Value, E>
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:192:27
[INFO] [stdout]     |
[INFO] [stdout] 192 |     fn visit_i32<E>(self, v: i32) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:186:27
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn visit_i16<E>(self, v: i16) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:192:27
[INFO] [stdout]     |
[INFO] [stdout] 192 |     fn visit_i32<E>(self, v: i32) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:198:27
[INFO] [stdout]     |
[INFO] [stdout] 198 |     fn visit_i64<E>(self, v: i64) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:198:27
[INFO] [stdout]     |
[INFO] [stdout] 198 |     fn visit_i64<E>(self, v: i64) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:204:28
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn visit_i128<E>(self, v: i128) -> Result<Self::Value, E>
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:204:28
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn visit_i128<E>(self, v: i128) -> Result<Self::Value, E>
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:210:26
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn visit_u8<E>(self, v: u8) -> Result<Self::Value, E>
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:210:26
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn visit_u8<E>(self, v: u8) -> Result<Self::Value, E>
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:216:27
[INFO] [stdout]     |
[INFO] [stdout] 216 |     fn visit_u16<E>(self, v: u16) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:222:27
[INFO] [stdout]     |
[INFO] [stdout] 222 |     fn visit_u32<E>(self, v: u32) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:216:27
[INFO] [stdout]     |
[INFO] [stdout] 216 |     fn visit_u16<E>(self, v: u16) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:228:27
[INFO] [stdout]     |
[INFO] [stdout] 228 |     fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:222:27
[INFO] [stdout]     |
[INFO] [stdout] 222 |     fn visit_u32<E>(self, v: u32) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:234:28
[INFO] [stdout]     |
[INFO] [stdout] 234 |     fn visit_u128<E>(self, v: u128) -> Result<Self::Value, E>
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:228:27
[INFO] [stdout]     |
[INFO] [stdout] 228 |     fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:240:27
[INFO] [stdout]     |
[INFO] [stdout] 240 |     fn visit_f32<E>(self, v: f32) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:246:27
[INFO] [stdout]     |
[INFO] [stdout] 246 |     fn visit_f64<E>(self, v: f64) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:234:28
[INFO] [stdout]     |
[INFO] [stdout] 234 |     fn visit_u128<E>(self, v: u128) -> Result<Self::Value, E>
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:252:28
[INFO] [stdout]     |
[INFO] [stdout] 252 |     fn visit_char<E>(self, v: char) -> Result<Self::Value, E>
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:240:27
[INFO] [stdout]     |
[INFO] [stdout] 240 |     fn visit_f32<E>(self, v: f32) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:246:27
[INFO] [stdout]     |
[INFO] [stdout] 246 |     fn visit_f64<E>(self, v: f64) -> Result<Self::Value, E>
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:252:28
[INFO] [stdout]     |
[INFO] [stdout] 252 |     fn visit_char<E>(self, v: char) -> Result<Self::Value, E>
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:327:29
[INFO] [stdout]     |
[INFO] [stdout] 327 |     fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
[INFO] [stdout]     |                             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:333:38
[INFO] [stdout]     |
[INFO] [stdout] 333 |     fn visit_borrowed_bytes<E>(self, v: &'de [u8]) -> Result<Self::Value, E>
[INFO] [stdout]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:339:32
[INFO] [stdout]     |
[INFO] [stdout] 339 |     fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
[INFO] [stdout]     |                                ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `deserializer`
[INFO] [stdout]    --> src/de.rs:351:28
[INFO] [stdout]     |
[INFO] [stdout] 351 |     fn visit_some<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
[INFO] [stdout]     |                            ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_deserializer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `deserializer`
[INFO] [stdout]    --> src/de.rs:365:9
[INFO] [stdout]     |
[INFO] [stdout] 365 |         deserializer: D,
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_deserializer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:327:29
[INFO] [stdout]     |
[INFO] [stdout] 327 |     fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
[INFO] [stdout]     |                             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seq`
[INFO] [stdout]    --> src/de.rs:372:31
[INFO] [stdout]     |
[INFO] [stdout] 372 |     fn visit_seq<A>(mut self, seq: A) -> Result<Self::Value, A::Error>
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_seq`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:333:38
[INFO] [stdout]     |
[INFO] [stdout] 333 |     fn visit_borrowed_bytes<E>(self, v: &'de [u8]) -> Result<Self::Value, E>
[INFO] [stdout]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map`
[INFO] [stdout]    --> src/de.rs:386:27
[INFO] [stdout]     |
[INFO] [stdout] 386 |     fn visit_map<A>(self, map: A) -> Result<Self::Value, A::Error>
[INFO] [stdout]     |                           ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/de.rs:339:32
[INFO] [stdout]     |
[INFO] [stdout] 339 |     fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
[INFO] [stdout]     |                                ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/de.rs:392:28
[INFO] [stdout]     |
[INFO] [stdout] 392 |     fn visit_enum<A>(self, data: A) -> Result<Self::Value, A::Error>
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `deserializer`
[INFO] [stdout]    --> src/de.rs:351:28
[INFO] [stdout]     |
[INFO] [stdout] 351 |     fn visit_some<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
[INFO] [stdout]     |                            ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_deserializer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `deserializer`
[INFO] [stdout]    --> src/de.rs:365:9
[INFO] [stdout]     |
[INFO] [stdout] 365 |         deserializer: D,
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_deserializer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seq`
[INFO] [stdout]    --> src/de.rs:372:31
[INFO] [stdout]     |
[INFO] [stdout] 372 |     fn visit_seq<A>(mut self, seq: A) -> Result<Self::Value, A::Error>
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_seq`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map`
[INFO] [stdout]    --> src/de.rs:386:27
[INFO] [stdout]     |
[INFO] [stdout] 386 |     fn visit_map<A>(self, map: A) -> Result<Self::Value, A::Error>
[INFO] [stdout]     |                           ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/de.rs:392:28
[INFO] [stdout]     |
[INFO] [stdout] 392 |     fn visit_enum<A>(self, data: A) -> Result<Self::Value, A::Error>
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DeBytes`, `ByteBuf`, and `Bytes` are never constructed
[INFO] [stdout]    --> src/lib.rs:482:5
[INFO] [stdout]     |
[INFO] [stdout] 478 | enum Data<'de> {
[INFO] [stdout]     |      ---- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 482 |     DeBytes(&'de [u8]),
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 483 |     ByteBuf(Box<[u8]>),
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 484 |     Bytes(NonNull<[u8]>),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `SizeHintReq` and `SizeHintRes` are never constructed
[INFO] [stdout]    --> src/lib.rs:570:5
[INFO] [stdout]     |
[INFO] [stdout] 568 | enum InternalOp {
[INFO] [stdout]     |      ---------- variants in this enum
[INFO] [stdout] 569 |     /// Ask for a size hint.
[INFO] [stdout] 570 |     SizeHintReq,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 571 |     /// Resulting size hint.
[INFO] [stdout] 572 |     SizeHintRes(Option<usize>)
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `InternalOp` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DeBytes`, `ByteBuf`, and `Bytes` are never constructed
[INFO] [stdout]    --> src/lib.rs:482:5
[INFO] [stdout]     |
[INFO] [stdout] 478 | enum Data<'de> {
[INFO] [stdout]     |      ---- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 482 |     DeBytes(&'de [u8]),
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 483 |     ByteBuf(Box<[u8]>),
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 484 |     Bytes(NonNull<[u8]>),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `SizeHintReq` and `SizeHintRes` are never constructed
[INFO] [stdout]    --> src/lib.rs:570:5
[INFO] [stdout]     |
[INFO] [stdout] 568 | enum InternalOp {
[INFO] [stdout]     |      ---------- variants in this enum
[INFO] [stdout] 569 |     /// Ask for a size hint.
[INFO] [stdout] 570 |     SizeHintReq,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 571 |     /// Resulting size hint.
[INFO] [stdout] 572 |     SizeHintRes(Option<usize>)
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `InternalOp` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.41s
[INFO] running `Command { std: "docker" "inspect" "40cf748e87b422c23b2b326c84b12fe00c3c17805dc05d815a30711a87503c63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40cf748e87b422c23b2b326c84b12fe00c3c17805dc05d815a30711a87503c63", kill_on_drop: false }`
[INFO] [stdout] 40cf748e87b422c23b2b326c84b12fe00c3c17805dc05d815a30711a87503c63