[INFO] cloning repository https://github.com/Ailrun/cpc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ailrun/cpc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAilrun%2Fcpc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAilrun%2Fcpc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54f3ce093ef47271bd9bcb50771c38361ab3d0da
[INFO] checking Ailrun/cpc 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%2FAilrun%2Fcpc" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Ailrun/cpc
[INFO] finished tweaking git repo https://github.com/Ailrun/cpc
[INFO] tweaked toml for git repo https://github.com/Ailrun/cpc written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Ailrun/cpc 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/Ailrun/cpc 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 477a63f5b2feeb43479aedcd7f117c060305e6de870f19996ec96559fca14b6b
[INFO] running `Command { std: "docker" "start" "-a" "477a63f5b2feeb43479aedcd7f117c060305e6de870f19996ec96559fca14b6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "477a63f5b2feeb43479aedcd7f117c060305e6de870f19996ec96559fca14b6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "477a63f5b2feeb43479aedcd7f117c060305e6de870f19996ec96559fca14b6b", kill_on_drop: false }`
[INFO] [stdout] 477a63f5b2feeb43479aedcd7f117c060305e6de870f19996ec96559fca14b6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] cff6ced1d074ec343723471ed127a224785ce1981dbc5c68776637f309d2003d
[INFO] running `Command { std: "docker" "start" "-a" "cff6ced1d074ec343723471ed127a224785ce1981dbc5c68776637f309d2003d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling semver v1.0.25
[INFO] [stderr]    Compiling rustversion v1.0.19
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling home v0.5.11
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling indexmap v2.7.1
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling bit-vec v0.8.0
[INFO] [stderr]     Checking gimli v0.31.1
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]    Compiling term v1.0.1
[INFO] [stderr]    Compiling fixedbitset v0.5.7
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling rustix v0.38.43
[INFO] [stderr]     Checking miniz_oxide v0.8.3
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling bit-set v0.8.0
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling ascii-canvas v4.0.0
[INFO] [stderr]    Compiling ena v0.14.3
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling owo-colors v4.1.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling petgraph v0.7.1
[INFO] [stderr]     Checking bitflags v2.8.0
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]    Compiling pico-args v0.5.0
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking unicode-linebreak v0.1.5
[INFO] [stderr]    Compiling thiserror v2.0.11
[INFO] [stderr]    Compiling logos-codegen v0.15.0
[INFO] [stderr]     Checking is_ci v1.2.0
[INFO] [stderr]     Checking supports-color v3.0.2
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]     Checking supports-hyperlinks v3.1.0
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]     Checking supports-unicode v3.0.0
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]     Checking pretty v0.12.3
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking similar v2.6.0
[INFO] [stderr]    Compiling syn v2.0.95
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]     Checking terminal_size v0.4.1
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling string_cache v0.8.8
[INFO] [stderr]     Checking addr2line v0.24.2
[INFO] [stderr]    Compiling lalrpop-util v0.22.1
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]     Checking backtrace v0.3.74
[INFO] [stderr]    Compiling lalrpop v0.22.1
[INFO] [stderr]     Checking backtrace-ext v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling miette-derive v7.4.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.11
[INFO] [stderr]    Compiling logos-derive v0.15.0
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking miette v7.4.0
[INFO] [stderr]     Checking logos v0.15.0
[INFO] [stderr]     Checking ron v0.7.1
[INFO] [stderr]     Checking insta v1.42.0
[INFO] [stderr]    Compiling cpc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `file` is never read
[INFO] [stdout]   --> src/front/parser.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     file: 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 `src` is never read
[INFO] [stdout]   --> src/front/parser.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     src: 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/front/parser.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     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 `labels` is never read
[INFO] [stdout]   --> src/front/parser.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     labels: Vec<LabeledSpan>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `file` is never read
[INFO] [stdout]   --> src/front/parser.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     file: 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 `src` is never read
[INFO] [stdout]   --> src/front/parser.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     src: 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/front/parser.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     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 `labels` is never read
[INFO] [stdout]   --> src/front/parser.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     labels: Vec<LabeledSpan>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/kernel/typecheck.rs:28:26
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn closed_infer(exp: &Exp) -> TypeCheck<Norm> {
[INFO] [stdout]    |                          ^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn closed_infer(exp: &Exp) -> TypeCheck<'_, Norm> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/kernel/typecheck.rs:34:34
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn closed_infer_typ_lvl(typ: &Exp) -> TypeCheck<Level> {
[INFO] [stdout]    |                                  ^^^^     ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn closed_infer_typ_lvl(typ: &Exp) -> TypeCheck<'_, Level> {
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/kernel/typecheck.rs:40:26
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn closed_check(exp: &Exp, typ: Norm) -> TypeCheck<()> {
[INFO] [stdout]    |                          ^^^^                ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn closed_check(exp: &Exp, typ: Norm) -> TypeCheck<'_, ()> {
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(usize, token::Token, usize), Infallible>
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/cpc-2c419505cfbdc020/out/front/grammar.rs:3032:9
[INFO] [stdout]      |
[INFO] [stdout] 3032 |         self.map_err(|error| __lalrpop_util::ParseError::User { error })
[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<(usize, token::Token, usize), Infallible>
[INFO] [stdout]    --> src/front/token.rs:121:54
[INFO] [stdout]     |
[INFO] [stdout] 121 |           self.token_stream.next().map(|(token, span)| match token {
[INFO] [stdout]     |  ______________________________________________________^
[INFO] [stdout] 122 | |             Ok(token) => Ok((span.start, token, span.end)),
[INFO] [stdout] 123 | |             Err(_) => Ok((span.start, Token::Error, span.end)),
[INFO] [stdout] 124 | |         })
[INFO] [stdout]     | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(usize, token::Token, usize), Infallible>
[INFO] [stdout]    --> src/front/token.rs:122:26
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Ok(token) => Ok((span.start, token, span.end)),
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(usize, token::Token, usize), Infallible>
[INFO] [stdout]    --> src/front/token.rs:123:23
[INFO] [stdout]     |
[INFO] [stdout] 123 |             Err(_) => Ok((span.start, Token::Error, span.end)),
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cpc` (lib) due to 4 previous errors; 7 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/kernel/typecheck.rs:28:26
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn closed_infer(exp: &Exp) -> TypeCheck<Norm> {
[INFO] [stdout]    |                          ^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn closed_infer(exp: &Exp) -> TypeCheck<'_, Norm> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/kernel/typecheck.rs:34:34
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn closed_infer_typ_lvl(typ: &Exp) -> TypeCheck<Level> {
[INFO] [stdout]    |                                  ^^^^     ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn closed_infer_typ_lvl(typ: &Exp) -> TypeCheck<'_, Level> {
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/kernel/typecheck.rs:40:26
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn closed_check(exp: &Exp, typ: Norm) -> TypeCheck<()> {
[INFO] [stdout]    |                          ^^^^                ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn closed_check(exp: &Exp, typ: Norm) -> TypeCheck<'_, ()> {
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(usize, token::Token, usize), Infallible>
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/cpc-2c419505cfbdc020/out/front/grammar.rs:3032:9
[INFO] [stdout]      |
[INFO] [stdout] 3032 |         self.map_err(|error| __lalrpop_util::ParseError::User { error })
[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<(usize, token::Token, usize), Infallible>
[INFO] [stdout]    --> src/front/token.rs:121:54
[INFO] [stdout]     |
[INFO] [stdout] 121 |           self.token_stream.next().map(|(token, span)| match token {
[INFO] [stdout]     |  ______________________________________________________^
[INFO] [stdout] 122 | |             Ok(token) => Ok((span.start, token, span.end)),
[INFO] [stdout] 123 | |             Err(_) => Ok((span.start, Token::Error, span.end)),
[INFO] [stdout] 124 | |         })
[INFO] [stdout]     | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(usize, token::Token, usize), Infallible>
[INFO] [stdout]    --> src/front/token.rs:122:26
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Ok(token) => Ok((span.start, token, span.end)),
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(usize, token::Token, usize), Infallible>
[INFO] [stdout]    --> src/front/token.rs:123:23
[INFO] [stdout]     |
[INFO] [stdout] 123 |             Err(_) => Ok((span.start, Token::Error, span.end)),
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cpc` (lib test) due to 4 previous errors; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "cff6ced1d074ec343723471ed127a224785ce1981dbc5c68776637f309d2003d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cff6ced1d074ec343723471ed127a224785ce1981dbc5c68776637f309d2003d", kill_on_drop: false }`
[INFO] [stdout] cff6ced1d074ec343723471ed127a224785ce1981dbc5c68776637f309d2003d
