[INFO] fetching crate fast_config 1.2.1...
[INFO] checking fast_config-1.2.1 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate fast_config 1.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate fast_config 1.2.1 on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fast_config 1.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate fast_config 1.2.1
[INFO] tweaked toml for crates.io crate fast_config 1.2.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate fast_config 1.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_yml v0.0.12
[INFO] [stderr]   Downloaded libyml v0.0.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a9ed3c6a2de3930cbd61ae46141871c0cfbaa01302b8d8e7508e92da77581b3
[INFO] running `Command { std: "docker" "start" "-a" "4a9ed3c6a2de3930cbd61ae46141871c0cfbaa01302b8d8e7508e92da77581b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a9ed3c6a2de3930cbd61ae46141871c0cfbaa01302b8d8e7508e92da77581b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a9ed3c6a2de3930cbd61ae46141871c0cfbaa01302b8d8e7508e92da77581b3", kill_on_drop: false }`
[INFO] [stdout] 4a9ed3c6a2de3930cbd61ae46141871c0cfbaa01302b8d8e7508e92da77581b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5855ddc58a2c0deb5a60a1ed712749b5e8fa5e16d4ba59740323596eefeb9e4
[INFO] running `Command { std: "docker" "start" "-a" "f5855ddc58a2c0deb5a60a1ed712749b5e8fa5e16d4ba59740323596eefeb9e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.213
[INFO] [stderr]     Checking regex-automata v0.4.8
[INFO] [stderr]    Compiling syn v2.0.85
[INFO] [stderr]     Checking anstream v0.6.15
[INFO] [stderr]     Checking regex v1.11.0
[INFO] [stderr]    Compiling serde_derive v1.0.213
[INFO] [stderr]    Compiling thiserror-impl v1.0.65
[INFO] [stderr]     Checking env_filter v0.1.2
[INFO] [stderr]     Checking env_logger v0.11.5
[INFO] [stderr]     Checking thiserror v1.0.65
[INFO] [stderr]     Checking fast_config v1.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0583]: file not found for module `tests`
[INFO] [stdout]   --> src/lib.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | mod tests;
[INFO] [stdout]    | ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: to create the module `tests`, create file "src/tests.rs" or "src/tests/mod.rs"
[INFO] [stdout]    = note: if there is a `mod tests` elsewhere in the crate already, import it with `use crate::...` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: You must install at least one format feature: `json`, `json5`, `toml`, or `yaml`
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | compile_error!("You must install at least one format feature: `json`, `json5`, `toml`, or `yaml`");
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: You must install at least one format feature: `json`, `json5`, `toml`, or `yaml`
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | compile_error!("You must install at least one format feature: `json`, `json5`, `toml`, or `yaml`");
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `ConfigSetupOptions::save_on_drop`: This option can result in I/O during program exit and can potentially corrupt config files!
[INFO] [stdout]          Use [`Config::save`] while your program is exiting instead!
[INFO] [stdout]    --> src/lib.rs:174:34
[INFO] [stdout]     |
[INFO] [stdout] 174 |             #[allow(deprecated)] save_on_drop: false,
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `ConfigSetupOptions::save_on_drop`: This option can result in I/O during program exit and can potentially corrupt config files!
[INFO] [stdout]          Use [`Config::save`] while your program is exiting instead!
[INFO] [stdout]    --> src/lib.rs:174:34
[INFO] [stdout]     |
[INFO] [stdout] 174 |             #[allow(deprecated)] save_on_drop: false,
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/format_dependant.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut vector = Vec::new();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/format_dependant.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn to_string<D>(value: &D, options: &InternalOptions) -> GenericResult<String> where D: Serialize {
[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/format_dependant.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let value = value.as_str();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/format_dependant.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut vector = Vec::new();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/format_dependant.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn to_string<D>(value: &D, options: &InternalOptions) -> GenericResult<String> where D: Serialize {
[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/format_dependant.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let value = value.as_str();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0583`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fast_config` (lib test) due to 2 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `fast_config` (lib) due to 1 previous error; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f5855ddc58a2c0deb5a60a1ed712749b5e8fa5e16d4ba59740323596eefeb9e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5855ddc58a2c0deb5a60a1ed712749b5e8fa5e16d4ba59740323596eefeb9e4", kill_on_drop: false }`
[INFO] [stdout] f5855ddc58a2c0deb5a60a1ed712749b5e8fa5e16d4ba59740323596eefeb9e4
