[INFO] cloning repository https://github.com/luxluth/dsh
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luxluth/dsh" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluxluth%2Fdsh", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluxluth%2Fdsh'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9cac5a8998b1d0f3862a8d477f7e520a8614d1a8
[INFO] checking luxluth/dsh against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluxluth%2Fdsh" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/luxluth/dsh
[INFO] finished tweaking git repo https://github.com/luxluth/dsh
[INFO] tweaked toml for git repo https://github.com/luxluth/dsh written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/luxluth/dsh on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/luxluth/dsh 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1f89e9c4a680a597e368fc58aa6e943dc08b4e3170f1e4b8d69f7ddfc054cc2
[INFO] running `Command { std: "docker" "start" "-a" "c1f89e9c4a680a597e368fc58aa6e943dc08b4e3170f1e4b8d69f7ddfc054cc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1f89e9c4a680a597e368fc58aa6e943dc08b4e3170f1e4b8d69f7ddfc054cc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1f89e9c4a680a597e368fc58aa6e943dc08b4e3170f1e4b8d69f7ddfc054cc2", kill_on_drop: false }`
[INFO] [stdout] c1f89e9c4a680a597e368fc58aa6e943dc08b4e3170f1e4b8d69f7ddfc054cc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d95c39dd535f6966064544c56efa8286efb8e4f3346c3e6bc0f847da1b49191a
[INFO] running `Command { std: "docker" "start" "-a" "d95c39dd535f6966064544c56efa8286efb8e4f3346c3e6bc0f847da1b49191a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]     Checking numtoa v0.2.4
[INFO] [stderr]     Checking tinytoken v0.1.2
[INFO] [stderr]     Checking unicode-width v0.2.0
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]     Checking termion v4.0.3
[INFO] [stderr]     Checking dsh v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `CmdParser` is never constructed
[INFO] [stdout]    --> src/cmd.rs:195:8
[INFO] [stdout]     |
[INFO] [stdout] 195 | struct CmdParser;
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/cmd.rs:198:16
[INFO] [stdout]     |
[INFO] [stdout] 198 | pub struct Col(u32);
[INFO] [stdout]     |            --- ^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Col` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse` is never used
[INFO] [stdout]    --> src/cmd.rs:310:12
[INFO] [stdout]     |
[INFO] [stdout] 309 | impl CmdParser {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 310 |     pub fn parse(line: &str) -> Result<Vec<Cmd>, CmdParsingError> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Token>, CmdParsingError>
[INFO] [stdout]    --> src/cmd.rs:272:72
[INFO] [stdout]     |
[INFO] [stdout] 272 |       pub fn tokenize(line: &str) -> Result<Vec<Token>, CmdParsingError> {
[INFO] [stdout]     |  ________________________________________________________________________^
[INFO] [stdout] 273 | |         let mut it = line.chars().into_iter().peekable();
[INFO] [stdout] 274 | |         let mut tokens = vec![];
[INFO] [stdout] 275 | |         let mut col: u32 = 0;
[INFO] [stdout] ...   |
[INFO] [stdout] 305 | |         Ok(tokens)
[INFO] [stdout] 306 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Token>, CmdParsingError>
[INFO] [stdout]    --> src/cmd.rs:305:9
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Ok(tokens)
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Cmd>, CmdParsingError>
[INFO] [stdout]    --> src/cmd.rs:310:67
[INFO] [stdout]     |
[INFO] [stdout] 310 |       pub fn parse(line: &str) -> Result<Vec<Cmd>, CmdParsingError> {
[INFO] [stdout]     |  ___________________________________________________________________^
[INFO] [stdout] 311 | |         let cmds = vec![];
[INFO] [stdout] 312 | |         let _tokens = Token::tokenize(line)?;
[INFO] [stdout] ...   |
[INFO] [stdout] 315 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, CmdParsingError>, Vec<Token>>
[INFO] [stdout]    --> src/cmd.rs:312:23
[INFO] [stdout]     |
[INFO] [stdout] 312 |         let _tokens = Token::tokenize(line)?;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Token>, CmdParsingError>
[INFO] [stdout]    --> src/cmd.rs:312:23
[INFO] [stdout]     |
[INFO] [stdout] 312 |         let _tokens = Token::tokenize(line)?;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Cmd>, CmdParsingError>
[INFO] [stdout]    --> src/cmd.rs:312:23
[INFO] [stdout]     |
[INFO] [stdout] 312 |         let _tokens = Token::tokenize(line)?;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Cmd>, CmdParsingError>
[INFO] [stdout]    --> src/cmd.rs:314:9
[INFO] [stdout]     |
[INFO] [stdout] 314 |         Ok(cmds)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CmdParser` is never constructed
[INFO] [stdout]    --> src/cmd.rs:195:8
[INFO] [stdout]     |
[INFO] [stdout] 195 | struct CmdParser;
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/cmd.rs:198:16
[INFO] [stdout]     |
[INFO] [stdout] 198 | pub struct Col(u32);
[INFO] [stdout]     |            --- ^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Col` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse` is never used
[INFO] [stdout]    --> src/cmd.rs:310:12
[INFO] [stdout]     |
[INFO] [stdout] 309 | impl CmdParser {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 310 |     pub fn parse(line: &str) -> Result<Vec<Cmd>, CmdParsingError> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Token>, CmdParsingError>
[INFO] [stdout]    --> src/cmd.rs:272:72
[INFO] [stdout]     |
[INFO] [stdout] 272 |       pub fn tokenize(line: &str) -> Result<Vec<Token>, CmdParsingError> {
[INFO] [stdout]     |  ________________________________________________________________________^
[INFO] [stdout] 273 | |         let mut it = line.chars().into_iter().peekable();
[INFO] [stdout] 274 | |         let mut tokens = vec![];
[INFO] [stdout] 275 | |         let mut col: u32 = 0;
[INFO] [stdout] ...   |
[INFO] [stdout] 305 | |         Ok(tokens)
[INFO] [stdout] 306 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Token>, CmdParsingError>
[INFO] [stdout]    --> src/cmd.rs:305:9
[INFO] [stdout]     |
[INFO] [stdout] 305 |         Ok(tokens)
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Cmd>, CmdParsingError>
[INFO] [stdout]    --> src/cmd.rs:310:67
[INFO] [stdout]     |
[INFO] [stdout] 310 |       pub fn parse(line: &str) -> Result<Vec<Cmd>, CmdParsingError> {
[INFO] [stdout]     |  ___________________________________________________________________^
[INFO] [stdout] 311 | |         let cmds = vec![];
[INFO] [stdout] 312 | |         let _tokens = Token::tokenize(line)?;
[INFO] [stdout] ...   |
[INFO] [stdout] 315 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, CmdParsingError>, Vec<Token>>
[INFO] [stdout]    --> src/cmd.rs:312:23
[INFO] [stdout]     |
[INFO] [stdout] 312 |         let _tokens = Token::tokenize(line)?;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Token>, CmdParsingError>
[INFO] [stdout]    --> src/cmd.rs:312:23
[INFO] [stdout]     |
[INFO] [stdout] 312 |         let _tokens = Token::tokenize(line)?;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Cmd>, CmdParsingError>
[INFO] [stdout]    --> src/cmd.rs:312:23
[INFO] [stdout]     |
[INFO] [stdout] 312 |         let _tokens = Token::tokenize(line)?;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Cmd>, CmdParsingError>
[INFO] [stdout]    --> src/cmd.rs:314:9
[INFO] [stdout]     |
[INFO] [stdout] 314 |         Ok(cmds)
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dsh` (lib test) due to 7 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `dsh` (lib) due to 7 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d95c39dd535f6966064544c56efa8286efb8e4f3346c3e6bc0f847da1b49191a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d95c39dd535f6966064544c56efa8286efb8e4f3346c3e6bc0f847da1b49191a", kill_on_drop: false }`
[INFO] [stdout] d95c39dd535f6966064544c56efa8286efb8e4f3346c3e6bc0f847da1b49191a
