[INFO] fetching crate sane 0.2.1...
[INFO] checking sane-0.2.1 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate sane 0.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate sane 0.2.1 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sane 0.2.1
[INFO] finished tweaking crates.io crate sane 0.2.1
[INFO] tweaked toml for crates.io crate sane 0.2.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a865014bf3bd39d19134fa9c6b0e291f793da753ae9830eb0e13d082f9e1321
[INFO] running `Command { std: "docker" "start" "-a" "6a865014bf3bd39d19134fa9c6b0e291f793da753ae9830eb0e13d082f9e1321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a865014bf3bd39d19134fa9c6b0e291f793da753ae9830eb0e13d082f9e1321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a865014bf3bd39d19134fa9c6b0e291f793da753ae9830eb0e13d082f9e1321", kill_on_drop: false }`
[INFO] [stdout] 6a865014bf3bd39d19134fa9c6b0e291f793da753ae9830eb0e13d082f9e1321
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bcc555f68eb569215b0b1efcf6fbdad118c3ad300d7c30e2315991e8aa068e0a
[INFO] running `Command { std: "docker" "start" "-a" "bcc555f68eb569215b0b1efcf6fbdad118c3ad300d7c30e2315991e8aa068e0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]     Checking sane v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/datetime.rs:210:29
[INFO] [stdout]     |
[INFO] [stdout] 210 |                         b'0'...b'9' => {
[INFO] [stdout]     |                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/ser.rs:482:20
[INFO] [stdout]     |
[INFO] [stdout] 482 |             (Some(0...1), _) | (_, &None) => {
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/ser.rs:520:16
[INFO] [stdout]     |
[INFO] [stdout] 520 |             'a'...'z' | 'A'...'Z' | '0'...'9' | '-' | '_' => true,
[INFO] [stdout]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/ser.rs:520:28
[INFO] [stdout]     |
[INFO] [stdout] 520 |             'a'...'z' | 'A'...'Z' | '0'...'9' | '-' | '_' => true,
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/ser.rs:520:40
[INFO] [stdout]     |
[INFO] [stdout] 520 |             'a'...'z' | 'A'...'Z' | '0'...'9' | '-' | '_' => true,
[INFO] [stdout]     |                                        ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]     --> src/ser.rs:1000:24
[INFO] [stdout]      |
[INFO] [stdout] 1000 |                 (Some(0...1), _) | (_, &None) => {
[INFO] [stdout]      |                        ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/datetime.rs:210:29
[INFO] [stdout]     |
[INFO] [stdout] 210 |                         b'0'...b'9' => {
[INFO] [stdout]     |                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/ser.rs:482:20
[INFO] [stdout]     |
[INFO] [stdout] 482 |             (Some(0...1), _) | (_, &None) => {
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/ser.rs:520:16
[INFO] [stdout]     |
[INFO] [stdout] 520 |             'a'...'z' | 'A'...'Z' | '0'...'9' | '-' | '_' => true,
[INFO] [stdout]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/ser.rs:520:28
[INFO] [stdout]     |
[INFO] [stdout] 520 |             'a'...'z' | 'A'...'Z' | '0'...'9' | '-' | '_' => true,
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/ser.rs:520:40
[INFO] [stdout]     |
[INFO] [stdout] 520 |             'a'...'z' | 'A'...'Z' | '0'...'9' | '-' | '_' => true,
[INFO] [stdout]     |                                        ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]     --> src/ser.rs:1000:24
[INFO] [stdout]      |
[INFO] [stdout] 1000 |                 (Some(0...1), _) | (_, &None) => {
[INFO] [stdout]      |                        ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `IntoDeserializer`
[INFO] [stdout]  --> src/macros.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub use serde::de::{Deserialize, IntoDeserializer};
[INFO] [stdout]   |                     ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tokens.rs:297:22
[INFO] [stdout]     |
[INFO] [stdout] 297 |           new_ch: &mut FnMut(
[INFO] [stdout]     |  ______________________^
[INFO] [stdout] 298 | |             &mut Tokenizer,
[INFO] [stdout] 299 | |             &mut MaybeString,
[INFO] [stdout] 300 | |             bool,
[INFO] [stdout] 301 | |             usize,
[INFO] [stdout] 302 | |             char,
[INFO] [stdout] 303 | |         ) -> Result<(), Error>,
[INFO] [stdout]     | |______________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 297 |         new_ch: &mut dyn FnMut(
[INFO] [stdout]     |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tokens.rs:297:22
[INFO] [stdout]     |
[INFO] [stdout] 297 |           new_ch: &mut FnMut(
[INFO] [stdout]     |  ______________________^
[INFO] [stdout] 298 | |             &mut Tokenizer,
[INFO] [stdout] 299 | |             &mut MaybeString,
[INFO] [stdout] 300 | |             bool,
[INFO] [stdout] 301 | |             usize,
[INFO] [stdout] 302 | |             char,
[INFO] [stdout] 303 | |         ) -> Result<(), Error>,
[INFO] [stdout]     | |______________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 297 |         new_ch: &mut dyn FnMut(
[INFO] [stdout]     |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:431:9
[INFO] [stdout]     |
[INFO] [stdout] 431 |         drop(write!(self.dst, "{}", t));
[INFO] [stdout]     |         ^^^^^-------------------------^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 431 -         drop(write!(self.dst, "{}", t));
[INFO] [stdout] 431 +         let _ = write!(self.dst, "{}", t);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:524:13
[INFO] [stdout]     |
[INFO] [stdout] 524 |             drop(write!(self.dst, "{}", key));
[INFO] [stdout]     |             ^^^^^---------------------------^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 524 -             drop(write!(self.dst, "{}", key));
[INFO] [stdout] 524 +             let _ = write!(self.dst, "{}", key);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:759:13
[INFO] [stdout]     |
[INFO] [stdout] 759 |             drop(write!($this.dst, "-"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 824 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 759 -             drop(write!($this.dst, "-"));
[INFO] [stdout] 759 +             let _ = write!($this.dst, "-");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:762:13
[INFO] [stdout]     |
[INFO] [stdout] 762 |             drop(write!($this.dst, "nan"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 824 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 762 -             drop(write!($this.dst, "nan"));
[INFO] [stdout] 762 +             let _ = write!($this.dst, "nan");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:764:13
[INFO] [stdout]     |
[INFO] [stdout] 764 |             drop(write!($this.dst, "{}", $v));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 824 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 764 -             drop(write!($this.dst, "{}", $v));
[INFO] [stdout] 764 +             let _ = write!($this.dst, "{}", $v);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:767:13
[INFO] [stdout]     |
[INFO] [stdout] 767 |             drop(write!($this.dst, ".0"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 824 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 767 -             drop(write!($this.dst, ".0"));
[INFO] [stdout] 767 +             let _ = write!($this.dst, ".0");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:759:13
[INFO] [stdout]     |
[INFO] [stdout] 759 |             drop(write!($this.dst, "-"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 828 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 759 -             drop(write!($this.dst, "-"));
[INFO] [stdout] 759 +             let _ = write!($this.dst, "-");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:762:13
[INFO] [stdout]     |
[INFO] [stdout] 762 |             drop(write!($this.dst, "nan"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 828 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 762 -             drop(write!($this.dst, "nan"));
[INFO] [stdout] 762 +             let _ = write!($this.dst, "nan");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:764:13
[INFO] [stdout]     |
[INFO] [stdout] 764 |             drop(write!($this.dst, "{}", $v));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 828 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 764 -             drop(write!($this.dst, "{}", $v));
[INFO] [stdout] 764 +             let _ = write!($this.dst, "{}", $v);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:767:13
[INFO] [stdout]     |
[INFO] [stdout] 767 |             drop(write!($this.dst, ".0"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 828 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 767 -             drop(write!($this.dst, ".0"));
[INFO] [stdout] 767 +             let _ = write!($this.dst, ".0");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:431:9
[INFO] [stdout]     |
[INFO] [stdout] 431 |         drop(write!(self.dst, "{}", t));
[INFO] [stdout]     |         ^^^^^-------------------------^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 431 -         drop(write!(self.dst, "{}", t));
[INFO] [stdout] 431 +         let _ = write!(self.dst, "{}", t);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:524:13
[INFO] [stdout]     |
[INFO] [stdout] 524 |             drop(write!(self.dst, "{}", key));
[INFO] [stdout]     |             ^^^^^---------------------------^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 524 -             drop(write!(self.dst, "{}", key));
[INFO] [stdout] 524 +             let _ = write!(self.dst, "{}", key);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:759:13
[INFO] [stdout]     |
[INFO] [stdout] 759 |             drop(write!($this.dst, "-"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 824 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 759 -             drop(write!($this.dst, "-"));
[INFO] [stdout] 759 +             let _ = write!($this.dst, "-");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:762:13
[INFO] [stdout]     |
[INFO] [stdout] 762 |             drop(write!($this.dst, "nan"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 824 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 762 -             drop(write!($this.dst, "nan"));
[INFO] [stdout] 762 +             let _ = write!($this.dst, "nan");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:764:13
[INFO] [stdout]     |
[INFO] [stdout] 764 |             drop(write!($this.dst, "{}", $v));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 824 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 764 -             drop(write!($this.dst, "{}", $v));
[INFO] [stdout] 764 +             let _ = write!($this.dst, "{}", $v);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:767:13
[INFO] [stdout]     |
[INFO] [stdout] 767 |             drop(write!($this.dst, ".0"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 824 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 767 -             drop(write!($this.dst, ".0"));
[INFO] [stdout] 767 +             let _ = write!($this.dst, ".0");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:759:13
[INFO] [stdout]     |
[INFO] [stdout] 759 |             drop(write!($this.dst, "-"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 828 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 759 -             drop(write!($this.dst, "-"));
[INFO] [stdout] 759 +             let _ = write!($this.dst, "-");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:762:13
[INFO] [stdout]     |
[INFO] [stdout] 762 |             drop(write!($this.dst, "nan"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 828 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 762 -             drop(write!($this.dst, "nan"));
[INFO] [stdout] 762 +             let _ = write!($this.dst, "nan");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:764:13
[INFO] [stdout]     |
[INFO] [stdout] 764 |             drop(write!($this.dst, "{}", $v));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 828 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 764 -             drop(write!($this.dst, "{}", $v));
[INFO] [stdout] 764 +             let _ = write!($this.dst, "{}", $v);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/ser.rs:767:13
[INFO] [stdout]     |
[INFO] [stdout] 767 |             drop(write!($this.dst, ".0"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 828 |         serialize_float!(self, v)
[INFO] [stdout]     |         -------------------------
[INFO] [stdout]     |         |
[INFO] [stdout]     |         argument has type `Result<(), std::fmt::Error>`
[INFO] [stdout]     |         in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `serialize_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 767 -             drop(write!($this.dst, ".0"));
[INFO] [stdout] 767 +             let _ = write!($this.dst, ".0");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: fields `global_string`, `global_integer`, `server`, and `peers` are never read
[INFO] [stdout]   --> examples/decode.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Config {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 13 |     global_string: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 14 |     global_integer: Option<u64>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 15 |     server: Option<ServerConfig>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 16 |     peers: Option<Vec<PeerConfig>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Config` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> examples/decode.rs:4:9
[INFO] [stdout]    |
[INFO] [stdout] 4  | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: fields `ip` and `port` are never read
[INFO] [stdout]   --> examples/decode.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct ServerConfig {
[INFO] [stdout]    |        ------------ fields in this struct
[INFO] [stdout] 25 |     ip: Option<String>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 26 |     port: Option<u64>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ServerConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: fields `ip` and `port` are never read
[INFO] [stdout]   --> examples/decode.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct PeerConfig {
[INFO] [stdout]    |        ---------- fields in this struct
[INFO] [stdout] 31 |     ip: Option<String>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 32 |     port: Option<u64>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PeerConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sane` (example "decode") due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "bcc555f68eb569215b0b1efcf6fbdad118c3ad300d7c30e2315991e8aa068e0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcc555f68eb569215b0b1efcf6fbdad118c3ad300d7c30e2315991e8aa068e0a", kill_on_drop: false }`
[INFO] [stdout] bcc555f68eb569215b0b1efcf6fbdad118c3ad300d7c30e2315991e8aa068e0a