[INFO] cloning repository https://github.com/wtetzner/serde_lson
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wtetzner/serde_lson" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwtetzner%2Fserde_lson", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwtetzner%2Fserde_lson'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2949c1167088057b0d56fa9167c0d5e59e2bc211
[INFO] checking wtetzner/serde_lson against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwtetzner%2Fserde_lson" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wtetzner/serde_lson on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wtetzner/serde_lson
[INFO] finished tweaking git repo https://github.com/wtetzner/serde_lson
[INFO] tweaked toml for git repo https://github.com/wtetzner/serde_lson written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/wtetzner/serde_lson 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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e09d77b3d236636965c9c5781373bdce9b4aca206c43f4bae396b9837cb1daaa
[INFO] running `Command { std: "docker" "start" "-a" "e09d77b3d236636965c9c5781373bdce9b4aca206c43f4bae396b9837cb1daaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e09d77b3d236636965c9c5781373bdce9b4aca206c43f4bae396b9837cb1daaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e09d77b3d236636965c9c5781373bdce9b4aca206c43f4bae396b9837cb1daaa", kill_on_drop: false }`
[INFO] [stdout] e09d77b3d236636965c9c5781373bdce9b4aca206c43f4bae396b9837cb1daaa
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97d66003e90d0dbfbe194d442876dd16eaeaffc0218528abe7ff6c7fc39ec70a
[INFO] running `Command { std: "docker" "start" "-a" "97d66003e90d0dbfbe194d442876dd16eaeaffc0218528abe7ff6c7fc39ec70a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling beef v0.5.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling logos-derive v0.12.0
[INFO] [stderr]     Checking logos v0.12.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking serde_lson v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::iter::Iterator`
[INFO] [stdout]  --> src/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/error.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/ser.rs:162:20
[INFO] [stdout]     |
[INFO] [stdout] 162 |         self.write((if v { "true" } else { "false" }))?;
[INFO] [stdout]     |                    ^                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 162 -         self.write((if v { "true" } else { "false" }))?;
[INFO] [stdout] 162 +         self.write(if v { "true" } else { "false" })?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `de`
[INFO] [stdout]  --> src/lib.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde::{de, Deserialize};
[INFO] [stdout]   |             ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/lib.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::error::{Error, Result};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Lexer`
[INFO] [stdout]  --> src/lib.rs:9:20
[INFO] [stdout]   |
[INFO] [stdout] 9 | use logos::{Logos, Lexer};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Iterator`
[INFO] [stdout]  --> src/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/error.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/ser.rs:162:20
[INFO] [stdout]     |
[INFO] [stdout] 162 |         self.write((if v { "true" } else { "false" }))?;
[INFO] [stdout]     |                    ^                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 162 -         self.write((if v { "true" } else { "false" }))?;
[INFO] [stdout] 162 +         self.write(if v { "true" } else { "false" })?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `de`
[INFO] [stdout]  --> src/lib.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde::{de, Deserialize};
[INFO] [stdout]   |             ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/lib.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::error::{Error, Result};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Lexer`
[INFO] [stdout]  --> src/lib.rs:9:20
[INFO] [stdout]   |
[INFO] [stdout] 9 | use logos::{Logos, Lexer};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/type_ser.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Write};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/type_ser.rs:48:29
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn serialize_bool(self, v: bool) -> Result<()> {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/type_ser.rs:69:29
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn serialize_i128(self, v: i128) -> Result<()> {
[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/type_ser.rs:90:29
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn serialize_u128(self, v: u128) -> Result<()> {
[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/type_ser.rs:99:28
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn serialize_f64(self, v: f64) -> Result<()> {
[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/type_ser.rs:108:28
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn serialize_str(self, v: &str) -> Result<()> {
[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/type_ser.rs:113:30
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn serialize_bytes(self, v: &[u8]) -> Result<()> {
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/type_ser.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         variant: &'static str,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/type_ser.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |         value: &T,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/type_ser.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 |         variant: &'static str,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/type_ser.rs:217:9
[INFO] [stdout]     |
[INFO] [stdout] 217 |         variant: &'static str,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/type_ser.rs:229:40
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn serialize_element<T>(&mut self, value: &T) -> Result<()>
[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/type_ser.rs:245:40
[INFO] [stdout]     |
[INFO] [stdout] 245 |     fn serialize_element<T>(&mut self, value: &T) -> Result<()>
[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/type_ser.rs:262:38
[INFO] [stdout]     |
[INFO] [stdout] 262 |     fn serialize_field<T>(&mut self, value: &T) -> Result<()>
[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/type_ser.rs:278:38
[INFO] [stdout]     |
[INFO] [stdout] 278 |     fn serialize_field<T>(&mut self, value: &T) -> Result<()>
[INFO] [stdout]     |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/type_ser.rs:294:36
[INFO] [stdout]     |
[INFO] [stdout] 294 |     fn serialize_key<T>(&mut self, key: &T) -> Result<()>
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/type_ser.rs:301:38
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn serialize_value<T>(&mut self, value: &T) -> Result<()>
[INFO] [stdout]     |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/type_ser.rs:317:38
[INFO] [stdout]     |
[INFO] [stdout] 317 |     fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/type_ser.rs:317:57
[INFO] [stdout]     |
[INFO] [stdout] 317 |     fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
[INFO] [stdout]     |                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/type_ser.rs:333:38
[INFO] [stdout]     |
[INFO] [stdout] 333 |     fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/type_ser.rs:333:57
[INFO] [stdout]     |
[INFO] [stdout] 333 |     fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
[INFO] [stdout]     |                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ser.rs:487:9
[INFO] [stdout]     |
[INFO] [stdout] 487 |         value.serialize(&mut **self);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 487 |         let _ = value.serialize(&mut **self);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ser.rs:524:9
[INFO] [stdout]     |
[INFO] [stdout] 524 |         value.serialize(&mut **self);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 524 |         let _ = value.serialize(&mut **self);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ser.rs:560:9
[INFO] [stdout]     |
[INFO] [stdout] 560 |         value.serialize(&mut **self);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 560 |         let _ = value.serialize(&mut **self);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ser.rs:603:9
[INFO] [stdout]     |
[INFO] [stdout] 603 |         value.serialize(&mut **self);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 603 |         let _ = value.serialize(&mut **self);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ser.rs:674:9
[INFO] [stdout]     |
[INFO] [stdout] 674 |         value.serialize(&mut **self);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 674 |         let _ = value.serialize(&mut **self);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/type_ser.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Write};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/type_ser.rs:48:29
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn serialize_bool(self, v: bool) -> Result<()> {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/type_ser.rs:69:29
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn serialize_i128(self, v: i128) -> Result<()> {
[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/type_ser.rs:90:29
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn serialize_u128(self, v: u128) -> Result<()> {
[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/type_ser.rs:99:28
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn serialize_f64(self, v: f64) -> Result<()> {
[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/type_ser.rs:108:28
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn serialize_str(self, v: &str) -> Result<()> {
[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/type_ser.rs:113:30
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn serialize_bytes(self, v: &[u8]) -> Result<()> {
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/type_ser.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         variant: &'static str,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/type_ser.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |         value: &T,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/type_ser.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 |         variant: &'static str,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/type_ser.rs:217:9
[INFO] [stdout]     |
[INFO] [stdout] 217 |         variant: &'static str,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/type_ser.rs:229:40
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn serialize_element<T>(&mut self, value: &T) -> Result<()>
[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/type_ser.rs:245:40
[INFO] [stdout]     |
[INFO] [stdout] 245 |     fn serialize_element<T>(&mut self, value: &T) -> Result<()>
[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/type_ser.rs:262:38
[INFO] [stdout]     |
[INFO] [stdout] 262 |     fn serialize_field<T>(&mut self, value: &T) -> Result<()>
[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/type_ser.rs:278:38
[INFO] [stdout]     |
[INFO] [stdout] 278 |     fn serialize_field<T>(&mut self, value: &T) -> Result<()>
[INFO] [stdout]     |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/type_ser.rs:294:36
[INFO] [stdout]     |
[INFO] [stdout] 294 |     fn serialize_key<T>(&mut self, key: &T) -> Result<()>
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/type_ser.rs:301:38
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn serialize_value<T>(&mut self, value: &T) -> Result<()>
[INFO] [stdout]     |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/type_ser.rs:317:38
[INFO] [stdout]     |
[INFO] [stdout] 317 |     fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/type_ser.rs:317:57
[INFO] [stdout]     |
[INFO] [stdout] 317 |     fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
[INFO] [stdout]     |                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/type_ser.rs:333:38
[INFO] [stdout]     |
[INFO] [stdout] 333 |     fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/type_ser.rs:333:57
[INFO] [stdout]     |
[INFO] [stdout] 333 |     fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
[INFO] [stdout]     |                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ser.rs:487:9
[INFO] [stdout]     |
[INFO] [stdout] 487 |         value.serialize(&mut **self);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 487 |         let _ = value.serialize(&mut **self);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ser.rs:524:9
[INFO] [stdout]     |
[INFO] [stdout] 524 |         value.serialize(&mut **self);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 524 |         let _ = value.serialize(&mut **self);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ser.rs:560:9
[INFO] [stdout]     |
[INFO] [stdout] 560 |         value.serialize(&mut **self);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 560 |         let _ = value.serialize(&mut **self);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ser.rs:603:9
[INFO] [stdout]     |
[INFO] [stdout] 603 |         value.serialize(&mut **self);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 603 |         let _ = value.serialize(&mut **self);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ser.rs:674:9
[INFO] [stdout]     |
[INFO] [stdout] 674 |         value.serialize(&mut **self);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 674 |         let _ = value.serialize(&mut **self);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     serde_lson::parse_str::<String>("and nil -128 321 elseif true false");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let _ = serde_lson::parse_str::<String>("and nil -128 321 elseif true false");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     serde_lson::parse_str::<String>("and nil -128 321 elseif true false");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let _ = serde_lson::parse_str::<String>("and nil -128 321 elseif true false");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.80s
[INFO] running `Command { std: "docker" "inspect" "97d66003e90d0dbfbe194d442876dd16eaeaffc0218528abe7ff6c7fc39ec70a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97d66003e90d0dbfbe194d442876dd16eaeaffc0218528abe7ff6c7fc39ec70a", kill_on_drop: false }`
[INFO] [stdout] 97d66003e90d0dbfbe194d442876dd16eaeaffc0218528abe7ff6c7fc39ec70a
