[INFO] fetching crate serde_multi 0.1.1...
[INFO] testing serde_multi-0.1.1 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate serde_multi 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate serde_multi 0.1.1 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_multi 0.1.1
[INFO] finished tweaking crates.io crate serde_multi 0.1.1
[INFO] tweaked toml for crates.io crate serde_multi 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3a4fae52948f6365d1a9be761eae84dde6027385dd8daf2aa123b6d91741a2e
[INFO] running `Command { std: "docker" "start" "-a" "f3a4fae52948f6365d1a9be761eae84dde6027385dd8daf2aa123b6d91741a2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3a4fae52948f6365d1a9be761eae84dde6027385dd8daf2aa123b6d91741a2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3a4fae52948f6365d1a9be761eae84dde6027385dd8daf2aa123b6d91741a2e", kill_on_drop: false }`
[INFO] [stdout] f3a4fae52948f6365d1a9be761eae84dde6027385dd8daf2aa123b6d91741a2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 239ce492b08ef04a980f04dbfae9fea2bc58d30298dab4213c377f35c4582490
[INFO] running `Command { std: "docker" "start" "-a" "239ce492b08ef04a980f04dbfae9fea2bc58d30298dab4213c377f35c4582490", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling serde_multi v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/macros.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / macro_rules! implement {
[INFO] [stdout] 2   | |   ($type:ty, SerdeText) => {
[INFO] [stdout] 3   | |     impl SerdeText for $type {
[INFO] [stdout] 4   | |       #[inline]
[INFO] [stdout] ...   |
[INFO] [stdout] 119 | |   };
[INFO] [stdout] 120 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/macros.rs:122:1
[INFO] [stdout]     |
[INFO] [stdout] 122 | / macro_rules! function {
[INFO] [stdout] 123 | |   (to_string_pretty, $map_error:expr, $path:path) => {
[INFO] [stdout] 124 | |     function!(to_string_pretty, $map_error, |value| $path(value));
[INFO] [stdout] 125 | |   };
[INFO] [stdout] ...   |
[INFO] [stdout] 212 | |   };
[INFO] [stdout] 213 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:348:44
[INFO] [stdout]     |
[INFO] [stdout] 348 | pub fn to_string_pretty<T>(format: Format, value: &T) -> Result<String, FormatError>
[INFO] [stdout]     |                                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:362:37
[INFO] [stdout]     |
[INFO] [stdout] 362 | pub fn to_string<T>(format: Format, value: &T) -> Result<String, FormatError>
[INFO] [stdout]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/multi.rs:378:40
[INFO] [stdout]     |
[INFO] [stdout] 378 | pub fn from_str<'d, T>(format: Format, data: &'d str) -> Result<T, FormatError>
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:394:41
[INFO] [stdout]     |
[INFO] [stdout] 394 | pub fn to_vec_pretty<T>(format: Format, value: &T) -> Result<Vec<u8>, FormatError>
[INFO] [stdout]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:408:34
[INFO] [stdout]     |
[INFO] [stdout] 408 | pub fn to_vec<T>(format: Format, value: &T) -> Result<Vec<u8>, FormatError>
[INFO] [stdout]     |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/multi.rs:430:42
[INFO] [stdout]     |
[INFO] [stdout] 430 | pub fn from_slice<'d, T>(format: Format, data: &'d [u8]) -> Result<T, FormatError>
[INFO] [stdout]     |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writer`
[INFO] [stdout]    --> src/multi.rs:452:47
[INFO] [stdout]     |
[INFO] [stdout] 452 | pub fn to_writer_pretty<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stdout]     |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:452:58
[INFO] [stdout]     |
[INFO] [stdout] 452 | pub fn to_writer_pretty<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stdout]     |                                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writer`
[INFO] [stdout]    --> src/multi.rs:466:40
[INFO] [stdout]     |
[INFO] [stdout] 466 | pub fn to_writer<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stdout]     |                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:466:51
[INFO] [stdout]     |
[INFO] [stdout] 466 | pub fn to_writer<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stdout]     |                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reader`
[INFO] [stdout]    --> src/multi.rs:488:42
[INFO] [stdout]     |
[INFO] [stdout] 488 | pub fn from_reader<R, T>(format: Format, reader: R) -> Result<T, FormatError>
[INFO] [stdout]     |                                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `map_err`
[INFO] [stdout]   --> src/formats.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn map_err<T: std::error::Error + Send + Sync + 'static>(err: T) -> crate::Error {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.30s
[INFO] running `Command { std: "docker" "inspect" "239ce492b08ef04a980f04dbfae9fea2bc58d30298dab4213c377f35c4582490", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "239ce492b08ef04a980f04dbfae9fea2bc58d30298dab4213c377f35c4582490", kill_on_drop: false }`
[INFO] [stdout] 239ce492b08ef04a980f04dbfae9fea2bc58d30298dab4213c377f35c4582490
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7c3c107eedd8985bf52e9a6641beb6615985dbae5ec50e536579b625107082f
[INFO] running `Command { std: "docker" "start" "-a" "a7c3c107eedd8985bf52e9a6641beb6615985dbae5ec50e536579b625107082f", kill_on_drop: false }`
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/macros.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / macro_rules! implement {
[INFO] [stdout] 2   | |   ($type:ty, SerdeText) => {
[INFO] [stdout] 3   | |     impl SerdeText for $type {
[INFO] [stdout] 4   | |       #[inline]
[INFO] [stdout] ...   |
[INFO] [stdout] 119 | |   };
[INFO] [stdout] 120 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/macros.rs:122:1
[INFO] [stdout]     |
[INFO] [stdout] 122 | / macro_rules! function {
[INFO] [stdout] 123 | |   (to_string_pretty, $map_error:expr, $path:path) => {
[INFO] [stdout] 124 | |     function!(to_string_pretty, $map_error, |value| $path(value));
[INFO] [stdout] 125 | |   };
[INFO] [stdout] ...   |
[INFO] [stdout] 212 | |   };
[INFO] [stdout] 213 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_multi v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:348:44
[INFO] [stdout]     |
[INFO] [stdout] 348 | pub fn to_string_pretty<T>(format: Format, value: &T) -> Result<String, FormatError>
[INFO] [stdout]     |                                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:362:37
[INFO] [stdout]     |
[INFO] [stdout] 362 | pub fn to_string<T>(format: Format, value: &T) -> Result<String, FormatError>
[INFO] [stdout]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/multi.rs:378:40
[INFO] [stdout]     |
[INFO] [stdout] 378 | pub fn from_str<'d, T>(format: Format, data: &'d str) -> Result<T, FormatError>
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:394:41
[INFO] [stdout]     |
[INFO] [stdout] 394 | pub fn to_vec_pretty<T>(format: Format, value: &T) -> Result<Vec<u8>, FormatError>
[INFO] [stdout]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:408:34
[INFO] [stdout]     |
[INFO] [stdout] 408 | pub fn to_vec<T>(format: Format, value: &T) -> Result<Vec<u8>, FormatError>
[INFO] [stdout]     |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/multi.rs:430:42
[INFO] [stdout]     |
[INFO] [stdout] 430 | pub fn from_slice<'d, T>(format: Format, data: &'d [u8]) -> Result<T, FormatError>
[INFO] [stdout]     |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writer`
[INFO] [stdout]    --> src/multi.rs:452:47
[INFO] [stdout]     |
[INFO] [stdout] 452 | pub fn to_writer_pretty<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stdout]     |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:452:58
[INFO] [stdout]     |
[INFO] [stdout] 452 | pub fn to_writer_pretty<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stdout]     |                                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writer`
[INFO] [stdout]    --> src/multi.rs:466:40
[INFO] [stdout]     |
[INFO] [stdout] 466 | pub fn to_writer<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stdout]     |                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:466:51
[INFO] [stdout]     |
[INFO] [stdout] 466 | pub fn to_writer<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stdout]     |                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reader`
[INFO] [stdout]    --> src/multi.rs:488:42
[INFO] [stdout]     |
[INFO] [stdout] 488 | pub fn from_reader<R, T>(format: Format, reader: R) -> Result<T, FormatError>
[INFO] [stdout]     |                                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `map_err`
[INFO] [stdout]   --> src/formats.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn map_err<T: std::error::Error + Send + Sync + 'static>(err: T) -> crate::Error {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/macros.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / macro_rules! implement {
[INFO] [stdout] 2   | |   ($type:ty, SerdeText) => {
[INFO] [stdout] 3   | |     impl SerdeText for $type {
[INFO] [stdout] 4   | |       #[inline]
[INFO] [stdout] ...   |
[INFO] [stdout] 119 | |   };
[INFO] [stdout] 120 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/macros.rs:122:1
[INFO] [stdout]     |
[INFO] [stdout] 122 | / macro_rules! function {
[INFO] [stdout] 123 | |   (to_string_pretty, $map_error:expr, $path:path) => {
[INFO] [stdout] 124 | |     function!(to_string_pretty, $map_error, |value| $path(value));
[INFO] [stdout] 125 | |   };
[INFO] [stdout] ...   |
[INFO] [stdout] 212 | |   };
[INFO] [stdout] 213 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:348:44
[INFO] [stdout]     |
[INFO] [stdout] 348 | pub fn to_string_pretty<T>(format: Format, value: &T) -> Result<String, FormatError>
[INFO] [stdout]     |                                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:362:37
[INFO] [stdout]     |
[INFO] [stdout] 362 | pub fn to_string<T>(format: Format, value: &T) -> Result<String, FormatError>
[INFO] [stdout]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/multi.rs:378:40
[INFO] [stdout]     |
[INFO] [stdout] 378 | pub fn from_str<'d, T>(format: Format, data: &'d str) -> Result<T, FormatError>
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:394:41
[INFO] [stdout]     |
[INFO] [stdout] 394 | pub fn to_vec_pretty<T>(format: Format, value: &T) -> Result<Vec<u8>, FormatError>
[INFO] [stdout]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:408:34
[INFO] [stdout]     |
[INFO] [stdout] 408 | pub fn to_vec<T>(format: Format, value: &T) -> Result<Vec<u8>, FormatError>
[INFO] [stdout]     |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/multi.rs:430:42
[INFO] [stdout]     |
[INFO] [stdout] 430 | pub fn from_slice<'d, T>(format: Format, data: &'d [u8]) -> Result<T, FormatError>
[INFO] [stdout]     |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writer`
[INFO] [stdout]    --> src/multi.rs:452:47
[INFO] [stdout]     |
[INFO] [stdout] 452 | pub fn to_writer_pretty<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stdout]     |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:452:58
[INFO] [stdout]     |
[INFO] [stdout] 452 | pub fn to_writer_pretty<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stdout]     |                                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writer`
[INFO] [stdout]    --> src/multi.rs:466:40
[INFO] [stdout]     |
[INFO] [stdout] 466 | pub fn to_writer<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stdout]     |                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/multi.rs:466:51
[INFO] [stdout]     |
[INFO] [stdout] 466 | pub fn to_writer<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stdout]     |                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reader`
[INFO] [stdout]    --> src/multi.rs:488:42
[INFO] [stdout]     |
[INFO] [stdout] 488 | pub fn from_reader<R, T>(format: Format, reader: R) -> Result<T, FormatError>
[INFO] [stdout]     |                                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `map_err`
[INFO] [stdout]   --> src/formats.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn map_err<T: std::error::Error + Send + Sync + 'static>(err: T) -> crate::Error {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "a7c3c107eedd8985bf52e9a6641beb6615985dbae5ec50e536579b625107082f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7c3c107eedd8985bf52e9a6641beb6615985dbae5ec50e536579b625107082f", kill_on_drop: false }`
[INFO] [stdout] a7c3c107eedd8985bf52e9a6641beb6615985dbae5ec50e536579b625107082f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b22bbad626697e620f48ea0fa41c1f26b2c90da8908c0995294df79e761bf5fc
[INFO] running `Command { std: "docker" "start" "-a" "b22bbad626697e620f48ea0fa41c1f26b2c90da8908c0995294df79e761bf5fc", kill_on_drop: false }`
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/macros.rs:1:1
[INFO] [stderr]     |
[INFO] [stderr] 1   | / macro_rules! implement {
[INFO] [stderr] 2   | |   ($type:ty, SerdeText) => {
[INFO] [stderr] 3   | |     impl SerdeText for $type {
[INFO] [stderr] 4   | |       #[inline]
[INFO] [stderr] ...   |
[INFO] [stderr] 119 | |   };
[INFO] [stderr] 120 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/macros.rs:122:1
[INFO] [stderr]     |
[INFO] [stderr] 122 | / macro_rules! function {
[INFO] [stderr] 123 | |   (to_string_pretty, $map_error:expr, $path:path) => {
[INFO] [stderr] 124 | |     function!(to_string_pretty, $map_error, |value| $path(value));
[INFO] [stderr] 125 | |   };
[INFO] [stderr] ...   |
[INFO] [stderr] 212 | |   };
[INFO] [stderr] 213 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/multi.rs:348:44
[INFO] [stderr]     |
[INFO] [stderr] 348 | pub fn to_string_pretty<T>(format: Format, value: &T) -> Result<String, FormatError>
[INFO] [stderr]     |                                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/multi.rs:362:37
[INFO] [stderr]     |
[INFO] [stderr] 362 | pub fn to_string<T>(format: Format, value: &T) -> Result<String, FormatError>
[INFO] [stderr]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/multi.rs:378:40
[INFO] [stderr]     |
[INFO] [stderr] 378 | pub fn from_str<'d, T>(format: Format, data: &'d str) -> Result<T, FormatError>
[INFO] [stderr]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/multi.rs:394:41
[INFO] [stderr]     |
[INFO] [stderr] 394 | pub fn to_vec_pretty<T>(format: Format, value: &T) -> Result<Vec<u8>, FormatError>
[INFO] [stderr]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/multi.rs:408:34
[INFO] [stderr]     |
[INFO] [stderr] 408 | pub fn to_vec<T>(format: Format, value: &T) -> Result<Vec<u8>, FormatError>
[INFO] [stderr]     |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/multi.rs:430:42
[INFO] [stderr]     |
[INFO] [stderr] 430 | pub fn from_slice<'d, T>(format: Format, data: &'d [u8]) -> Result<T, FormatError>
[INFO] [stderr]     |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `writer`
[INFO] [stderr]    --> src/multi.rs:452:47
[INFO] [stderr]     |
[INFO] [stderr] 452 | pub fn to_writer_pretty<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stderr]     |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/multi.rs:452:58
[INFO] [stderr]     |
[INFO] [stderr] 452 | pub fn to_writer_pretty<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stderr]     |                                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `writer`
[INFO] [stderr]    --> src/multi.rs:466:40
[INFO] [stderr]     |
[INFO] [stderr] 466 | pub fn to_writer<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stderr]     |                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/multi.rs:466:51
[INFO] [stderr]     |
[INFO] [stderr] 466 | pub fn to_writer<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stderr]     |                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reader`
[INFO] [stderr]    --> src/multi.rs:488:42
[INFO] [stderr]     |
[INFO] [stderr] 488 | pub fn from_reader<R, T>(format: Format, reader: R) -> Result<T, FormatError>
[INFO] [stderr]     |                                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `map_err`
[INFO] [stderr]   --> src/formats.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn map_err<T: std::error::Error + Send + Sync + 'static>(err: T) -> crate::Error {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 14 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/macros.rs:1:1
[INFO] [stderr]     |
[INFO] [stderr] 1   | / macro_rules! implement {
[INFO] [stderr] 2   | |   ($type:ty, SerdeText) => {
[INFO] [stderr] 3   | |     impl SerdeText for $type {
[INFO] [stderr] 4   | |       #[inline]
[INFO] [stderr] ...   |
[INFO] [stderr] 119 | |   };
[INFO] [stderr] 120 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/macros.rs:122:1
[INFO] [stderr]     |
[INFO] [stderr] 122 | / macro_rules! function {
[INFO] [stderr] 123 | |   (to_string_pretty, $map_error:expr, $path:path) => {
[INFO] [stderr] 124 | |     function!(to_string_pretty, $map_error, |value| $path(value));
[INFO] [stderr] 125 | |   };
[INFO] [stderr] ...   |
[INFO] [stderr] 212 | |   };
[INFO] [stderr] 213 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/multi.rs:348:44
[INFO] [stderr]     |
[INFO] [stderr] 348 | pub fn to_string_pretty<T>(format: Format, value: &T) -> Result<String, FormatError>
[INFO] [stderr]     |                                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/multi.rs:362:37
[INFO] [stderr]     |
[INFO] [stderr] 362 | pub fn to_string<T>(format: Format, value: &T) -> Result<String, FormatError>
[INFO] [stderr]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/multi.rs:378:40
[INFO] [stderr]     |
[INFO] [stderr] 378 | pub fn from_str<'d, T>(format: Format, data: &'d str) -> Result<T, FormatError>
[INFO] [stderr]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/multi.rs:394:41
[INFO] [stderr]     |
[INFO] [stderr] 394 | pub fn to_vec_pretty<T>(format: Format, value: &T) -> Result<Vec<u8>, FormatError>
[INFO] [stderr]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/multi.rs:408:34
[INFO] [stderr]     |
[INFO] [stderr] 408 | pub fn to_vec<T>(format: Format, value: &T) -> Result<Vec<u8>, FormatError>
[INFO] [stderr]     |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/multi.rs:430:42
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 430 | pub fn from_slice<'d, T>(format: Format, data: &'d [u8]) -> Result<T, FormatError>
[INFO] [stdout] 
[INFO] [stderr]     |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `writer`
[INFO] [stderr]    --> src/multi.rs:452:47
[INFO] [stderr]     |
[INFO] [stderr] 452 | pub fn to_writer_pretty<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stderr]     |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/multi.rs:452:58
[INFO] [stderr]     |
[INFO] [stderr] 452 | pub fn to_writer_pretty<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stderr]     |                                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `writer`
[INFO] [stderr]    --> src/multi.rs:466:40
[INFO] [stderr]     |
[INFO] [stderr] 466 | pub fn to_writer<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stderr]     |                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/multi.rs:466:51
[INFO] [stderr]     |
[INFO] [stderr] 466 | pub fn to_writer<W, T>(format: Format, writer: W, value: &T) -> Result<(), FormatError>
[INFO] [stderr]     |                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reader`
[INFO] [stderr]    --> src/multi.rs:488:42
[INFO] [stderr]     |
[INFO] [stderr] 488 | pub fn from_reader<R, T>(format: Format, reader: R) -> Result<T, FormatError>
[INFO] [stderr]     |                                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `map_err`
[INFO] [stderr]   --> src/formats.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn map_err<T: std::error::Error + Send + Sync + 'static>(err: T) -> crate::Error {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 14 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/serde_multi-715b9eb960d16282)
[INFO] [stderr]    Doc-tests serde_multi
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stdout] test src/lib.rs - (line 20) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 20) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `serde_multi::formats::json`
[INFO] [stdout]  --> src/lib.rs:22:27
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde_multi::formats::json::Json;
[INFO] [stdout]   |                           ^^^^ could not find `json` in `formats`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 20)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b22bbad626697e620f48ea0fa41c1f26b2c90da8908c0995294df79e761bf5fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b22bbad626697e620f48ea0fa41c1f26b2c90da8908c0995294df79e761bf5fc", kill_on_drop: false }`
[INFO] [stdout] b22bbad626697e620f48ea0fa41c1f26b2c90da8908c0995294df79e761bf5fc