[INFO] fetching crate knus 3.3.1...
[INFO] checking knus-3.3.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate knus 3.3.1 into /workspace/builds/worker-0-tc2/source
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate knus 3.3.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate knus 3.3.1
[INFO] tweaked toml for crates.io crate knus 3.3.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate knus 3.3.1 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 crates.io crate knus 3.3.1 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 29f59085831ae7b8096928fa3f712b61a6fed754f5155ea02c9871e430c4594f
[INFO] running `Command { std: "docker" "start" "-a" "29f59085831ae7b8096928fa3f712b61a6fed754f5155ea02c9871e430c4594f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29f59085831ae7b8096928fa3f712b61a6fed754f5155ea02c9871e430c4594f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29f59085831ae7b8096928fa3f712b61a6fed754f5155ea02c9871e430c4594f", kill_on_drop: false }`
[INFO] [stdout] 29f59085831ae7b8096928fa3f712b61a6fed754f5155ea02c9871e430c4594f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 82cc85ffa30ccd8313902efe3b9ea69b7488b5644146a258f078506d85c3f022
[INFO] running `Command { std: "docker" "start" "-a" "82cc85ffa30ccd8313902efe3b9ea69b7488b5644146a258f078506d85c3f022", kill_on_drop: false }`
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling rustix v1.0.5
[INFO] [stderr]     Checking gimli v0.31.1
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]    Compiling owo-colors v4.2.0
[INFO] [stderr]     Checking linux-raw-sys v0.9.4
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking miniz_oxide v0.8.8
[INFO] [stderr]     Checking bitflags v2.9.0
[INFO] [stderr]     Checking unicode-linebreak v0.1.5
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling proc-macro-error-attr2 v2.0.0
[INFO] [stderr]     Checking is_ci v1.2.0
[INFO] [stderr]     Checking unicode-width v0.2.0
[INFO] [stderr]     Checking supports-color v3.0.2
[INFO] [stderr]     Checking supports-hyperlinks v3.1.0
[INFO] [stderr]     Checking supports-unicode v3.0.0
[INFO] [stderr]     Checking textwrap v0.16.2
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking chumsky v0.9.3
[INFO] [stderr]     Checking terminal_size v0.4.2
[INFO] [stderr]     Checking addr2line v0.24.2
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking assert-json-diff v2.0.2
[INFO] [stderr]    Compiling proc-macro-error2 v2.0.1
[INFO] [stderr]    Compiling miette-derive v7.6.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling knus-derive v3.3.1
[INFO] [stderr]     Checking backtrace v0.3.74
[INFO] [stderr]     Checking backtrace-ext v0.2.1
[INFO] [stderr]     Checking thiserror v2.0.12
[INFO] [stderr]     Checking miette v7.6.0
[INFO] [stderr]     Checking knus v3.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `source_code` is never read
[INFO] [stdout]   --> src/errors.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub(crate) source_code: NamedSource<String>,
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `errors` is never read
[INFO] [stdout]   --> src/errors.rs:30:16
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub(crate) errors: Vec<miette::Report>,
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `found` is never read
[INFO] [stdout]   --> src/errors.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         found: Option<TypeName>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `expected` is never read
[INFO] [stdout]   --> src/errors.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         expected: ExpectedType,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rust_type` is never read
[INFO] [stdout]   --> src/errors.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         rust_type: &'static str,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `expected` is never read
[INFO] [stdout]   --> src/errors.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         expected: ExpectedKind,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `message` is never read
[INFO] [stdout]   --> src/errors.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         message: String,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `message` is never read
[INFO] [stdout]    --> src/errors.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |         message: String,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `source` is never read
[INFO] [stdout]    --> src/errors.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |         source: Box<dyn std::error::Error + Send + Sync + 'static>,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `message` is never read
[INFO] [stdout]    --> src/errors.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 139 |         message: Cow<'static, str>,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `label` is never read
[INFO] [stdout]    --> src/errors.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         label: Option<&'static str>,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/errors.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |         span: S,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `message` is never read
[INFO] [stdout]    --> src/errors.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |         message: String,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `found` is never read
[INFO] [stdout]    --> src/errors.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 |         found: TokenFormat,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `expected` is never read
[INFO] [stdout]    --> src/errors.rs:171:9
[INFO] [stdout]     |
[INFO] [stdout] 171 |         expected: BTreeSet<TokenFormat>,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `label` is never read
[INFO] [stdout]    --> src/errors.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         label: &'static str,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `opened` is never read
[INFO] [stdout]    --> src/errors.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |         opened: TokenFormat,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `found` is never read
[INFO] [stdout]    --> src/errors.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |         found: TokenFormat,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `message` is never read
[INFO] [stdout]    --> src/errors.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 191 |         message: String,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `help` is never read
[INFO] [stdout]    --> src/errors.rs:200:9
[INFO] [stdout]     |
[INFO] [stdout] 200 |         help: &'static str,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<ast::TypeName, Infallible>
[INFO] [stdout]    --> src/ast.rs:263:58
[INFO] [stdout]     |
[INFO] [stdout] 263 |       fn from_str(s: &str) -> Result<TypeName, Infallible> {
[INFO] [stdout]     |  __________________________________________________________^
[INFO] [stdout] 264 | |         use TypeNameInner::*;
[INFO] [stdout] 265 | |         match BuiltinType::from_str(s) {
[INFO] [stdout] 266 | |             Ok(b) => Ok(TypeName(Builtin(b))),
[INFO] [stdout] ...   |
[INFO] [stdout] 269 | |     }
[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<ast::TypeName, Infallible>
[INFO] [stdout]    --> src/ast.rs:265:9
[INFO] [stdout]     |
[INFO] [stdout] 265 | /         match BuiltinType::from_str(s) {
[INFO] [stdout] 266 | |             Ok(b) => Ok(TypeName(Builtin(b))),
[INFO] [stdout] 267 | |             Err(()) => Ok(TypeName(Custom(s.into()))),
[INFO] [stdout] 268 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<ast::TypeName, Infallible>
[INFO] [stdout]    --> src/ast.rs:266:22
[INFO] [stdout]     |
[INFO] [stdout] 266 |             Ok(b) => Ok(TypeName(Builtin(b))),
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<ast::TypeName, Infallible>
[INFO] [stdout]    --> src/ast.rs:267:24
[INFO] [stdout]     |
[INFO] [stdout] 267 |             Err(()) => Ok(TypeName(Custom(s.into()))),
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `knus` (lib) due to 4 previous errors; 20 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: value assigned to `source_code` is never read
[INFO] [stdout]   --> src/errors.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub(crate) source_code: NamedSource<String>,
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `errors` is never read
[INFO] [stdout]   --> src/errors.rs:30:16
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub(crate) errors: Vec<miette::Report>,
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `found` is never read
[INFO] [stdout]   --> src/errors.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         found: Option<TypeName>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `expected` is never read
[INFO] [stdout]   --> src/errors.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         expected: ExpectedType,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rust_type` is never read
[INFO] [stdout]   --> src/errors.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         rust_type: &'static str,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `expected` is never read
[INFO] [stdout]   --> src/errors.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         expected: ExpectedKind,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `message` is never read
[INFO] [stdout]   --> src/errors.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         message: String,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `message` is never read
[INFO] [stdout]    --> src/errors.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |         message: String,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `source` is never read
[INFO] [stdout]    --> src/errors.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |         source: Box<dyn std::error::Error + Send + Sync + 'static>,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `message` is never read
[INFO] [stdout]    --> src/errors.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 139 |         message: Cow<'static, str>,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `label` is never read
[INFO] [stdout]    --> src/errors.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         label: Option<&'static str>,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/errors.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |         span: S,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `message` is never read
[INFO] [stdout]    --> src/errors.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |         message: String,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `found` is never read
[INFO] [stdout]    --> src/errors.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 |         found: TokenFormat,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `expected` is never read
[INFO] [stdout]    --> src/errors.rs:171:9
[INFO] [stdout]     |
[INFO] [stdout] 171 |         expected: BTreeSet<TokenFormat>,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `label` is never read
[INFO] [stdout]    --> src/errors.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         label: &'static str,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `opened` is never read
[INFO] [stdout]    --> src/errors.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |         opened: TokenFormat,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `found` is never read
[INFO] [stdout]    --> src/errors.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |         found: TokenFormat,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `message` is never read
[INFO] [stdout]    --> src/errors.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 191 |         message: String,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `help` is never read
[INFO] [stdout]    --> src/errors.rs:200:9
[INFO] [stdout]     |
[INFO] [stdout] 200 |         help: &'static str,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<ast::TypeName, Infallible>
[INFO] [stdout]    --> src/ast.rs:263:58
[INFO] [stdout]     |
[INFO] [stdout] 263 |       fn from_str(s: &str) -> Result<TypeName, Infallible> {
[INFO] [stdout]     |  __________________________________________________________^
[INFO] [stdout] 264 | |         use TypeNameInner::*;
[INFO] [stdout] 265 | |         match BuiltinType::from_str(s) {
[INFO] [stdout] 266 | |             Ok(b) => Ok(TypeName(Builtin(b))),
[INFO] [stdout] ...   |
[INFO] [stdout] 269 | |     }
[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<ast::TypeName, Infallible>
[INFO] [stdout]    --> src/ast.rs:265:9
[INFO] [stdout]     |
[INFO] [stdout] 265 | /         match BuiltinType::from_str(s) {
[INFO] [stdout] 266 | |             Ok(b) => Ok(TypeName(Builtin(b))),
[INFO] [stdout] 267 | |             Err(()) => Ok(TypeName(Custom(s.into()))),
[INFO] [stdout] 268 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<ast::TypeName, Infallible>
[INFO] [stdout]    --> src/ast.rs:266:22
[INFO] [stdout]     |
[INFO] [stdout] 266 |             Ok(b) => Ok(TypeName(Builtin(b))),
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<ast::TypeName, Infallible>
[INFO] [stdout]    --> src/ast.rs:267:24
[INFO] [stdout]     |
[INFO] [stdout] 267 |             Err(()) => Ok(TypeName(Custom(s.into()))),
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `knus` (lib test) due to 4 previous errors; 20 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "82cc85ffa30ccd8313902efe3b9ea69b7488b5644146a258f078506d85c3f022", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82cc85ffa30ccd8313902efe3b9ea69b7488b5644146a258f078506d85c3f022", kill_on_drop: false }`
[INFO] [stdout] 82cc85ffa30ccd8313902efe3b9ea69b7488b5644146a258f078506d85c3f022
