[INFO] cloning repository https://github.com/Serpent-Tools/serpentine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Serpent-Tools/serpentine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSerpent-Tools%2Fserpentine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSerpent-Tools%2Fserpentine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ebd3f1f089d075192025ca5606612c581c7b8e27
[INFO] checking Serpent-Tools/serpentine 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%2FSerpent-Tools%2Fserpentine" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Serpent-Tools/serpentine
[INFO] finished tweaking git repo https://github.com/Serpent-Tools/serpentine
[INFO] tweaked toml for git repo https://github.com/Serpent-Tools/serpentine written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Serpent-Tools/serpentine 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/Serpent-Tools/serpentine 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 10656b15ba5e13befa8befb428391b446ccadaa8d840d97b92d4ff48faa384d1
[INFO] running `Command { std: "docker" "start" "-a" "10656b15ba5e13befa8befb428391b446ccadaa8d840d97b92d4ff48faa384d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10656b15ba5e13befa8befb428391b446ccadaa8d840d97b92d4ff48faa384d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10656b15ba5e13befa8befb428391b446ccadaa8d840d97b92d4ff48faa384d1", kill_on_drop: false }`
[INFO] [stdout] 10656b15ba5e13befa8befb428391b446ccadaa8d840d97b92d4ff48faa384d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 552dc6541d25cf1162875849069cd90bf0ee602d32992dc9156ccfe0f3d1b3d9
[INFO] running `Command { std: "docker" "start" "-a" "552dc6541d25cf1162875849069cd90bf0ee602d32992dc9156ccfe0f3d1b3d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]     Checking bitflags v2.9.4
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking writeable v0.6.1
[INFO] [stderr]     Checking linux-raw-sys v0.11.0
[INFO] [stderr]     Checking litemap v0.8.0
[INFO] [stderr]    Compiling icu_normalizer_data v2.0.0
[INFO] [stderr]    Compiling icu_properties_data v2.0.1
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]     Checking socket2 v0.6.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.6
[INFO] [stderr]     Checking anstyle v1.0.13
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]     Checking percent-encoding v2.3.2
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]     Checking gimli v0.32.3
[INFO] [stderr]    Compiling indexmap v2.11.4
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking anstream v0.6.21
[INFO] [stderr]     Checking form_urlencoded v1.2.2
[INFO] [stderr]     Checking rustc-demangle v0.1.26
[INFO] [stderr]    Compiling owo-colors v4.2.3
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rstest_macros v0.26.1
[INFO] [stderr]     Checking bstr v1.12.0
[INFO] [stderr]     Checking is_ci v1.2.0
[INFO] [stderr]     Checking unicode-width v0.2.2
[INFO] [stderr]     Checking jiff v0.2.15
[INFO] [stderr]     Checking clap_lex v0.7.6
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking textwrap v0.16.2
[INFO] [stderr]     Checking clap_builder v4.5.49
[INFO] [stderr]    Compiling toml_edit v0.23.7
[INFO] [stderr]     Checking supports-color v3.0.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking wait-timeout v0.2.1
[INFO] [stderr]     Checking filetime v0.2.26
[INFO] [stderr]    Compiling serpentine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling relative-path v1.9.3
[INFO] [stderr]     Checking supports-hyperlinks v3.1.0
[INFO] [stderr]     Checking supports-unicode v3.0.0
[INFO] [stderr]    Compiling glob v0.3.3
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr] warning: serpentine@0.1.0: DOCKER_HOST not set, docker related tests will be skipped
[INFO] [stderr]     Checking rand_xorshift v0.4.0
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking uuid v1.18.1
[INFO] [stderr]     Checking console v0.15.11
[INFO] [stderr]    Compiling proc-macro-crate v3.4.0
[INFO] [stderr]     Checking futures-timer v3.0.3
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]     Checking similar v2.7.0
[INFO] [stderr]     Checking shell-words v1.1.0
[INFO] [stderr]     Checking addr2line v0.25.1
[INFO] [stderr]     Checking serde_json v1.0.145
[INFO] [stderr]     Checking serde_with v3.15.0
[INFO] [stderr]     Checking tempfile v3.23.0
[INFO] [stderr]     Checking terminal_size v0.4.3
[INFO] [stderr]     Checking xattr v1.6.1
[INFO] [stderr]     Checking rusty-fork v0.3.1
[INFO] [stderr]     Checking tar v0.4.44
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]     Checking globset v0.4.16
[INFO] [stderr]     Checking ignore v0.4.23
[INFO] [stderr]     Checking env_filter v0.1.4
[INFO] [stderr]     Checking insta v1.43.2
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]     Checking backtrace v0.3.76
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.0
[INFO] [stderr]    Compiling zerovec-derive v0.11.1
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling serde_repr v0.1.20
[INFO] [stderr]     Checking backtrace-ext v0.2.1
[INFO] [stderr]    Compiling miette-derive v7.6.0
[INFO] [stderr]    Compiling clap_derive v4.5.49
[INFO] [stderr]    Compiling proptest-macro v0.3.1
[INFO] [stderr]    Compiling test-log-macros v0.2.18
[INFO] [stderr]     Checking env_logger v0.11.8
[INFO] [stderr]    Compiling proptest-derive v0.6.0
[INFO] [stderr]     Checking test-log v0.2.18
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stderr]     Checking proptest v1.8.0
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking miette v7.6.0
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.8.0
[INFO] [stderr]     Checking zerovec v0.11.4
[INFO] [stderr]     Checking zerotrie v0.2.2
[INFO] [stderr]     Checking thiserror v2.0.17
[INFO] [stderr]     Checking clap v4.5.49
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking tinystr v0.8.1
[INFO] [stderr]     Checking potential_utf v0.1.3
[INFO] [stderr]     Checking icu_collections v2.0.0
[INFO] [stderr]     Checking icu_locale_core v2.0.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking bollard-stubs v1.49.1-rc.28.4.0
[INFO] [stderr]     Checking icu_provider v2.0.0
[INFO] [stderr]     Checking icu_normalizer v2.0.0
[INFO] [stderr]     Checking icu_properties v2.0.1
[INFO] [stderr]     Checking rstest v0.26.1
[INFO] [stderr]     Checking hyper v1.7.0
[INFO] [stderr]     Checking tokio-util v0.7.16
[INFO] [stderr]     Checking hyper-util v0.1.17
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking url v2.5.7
[INFO] [stderr]     Checking hyperlocal v0.9.1
[INFO] [stderr]     Checking bollard v0.19.3
[INFO] [stdout] warning: value assigned to `expected` is never read
[INFO] [stdout]    --> src/snek/mod.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |         expected: usize,
[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 `got` is never read
[INFO] [stdout]    --> src/snek/mod.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         got: usize,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `location` is never read
[INFO] [stdout]    --> src/snek/mod.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         location: Span,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `stmt` is never read
[INFO] [stdout]    --> src/snek/mod.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 139 |         stmt: &'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 `context` is never read
[INFO] [stdout]    --> src/snek/mod.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |         context: &'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 `location` is never read
[INFO] [stdout]    --> src/snek/mod.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         location: Span,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `name` is never read
[INFO] [stdout]    --> src/snek/mod.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |         name: 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 `ident` is never read
[INFO] [stdout]    --> src/snek/mod.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 209 |         ident: 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 `location` is never read
[INFO] [stdout]    --> src/snek/mod.rs:212:9
[INFO] [stdout]     |
[INFO] [stdout] 212 |         location: Span,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `char` is never read
[INFO] [stdout]   --> src/snek/mod.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         char: char,
[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/snek/mod.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |         expected: 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 `expected` is never read
[INFO] [stdout]   --> src/snek/mod.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         expected: 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 `ident` is never read
[INFO] [stdout]    --> src/snek/mod.rs:114:9
[INFO] [stdout]     |
[INFO] [stdout] 114 |         ident: 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 `expected` is never read
[INFO] [stdout]    --> src/snek/mod.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |         expected: &'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 `maybe` is never read
[INFO] [stdout]    --> src/snek/mod.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         maybe: 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 `error` is never read
[INFO] [stdout]    --> src/snek/mod.rs:173:9
[INFO] [stdout]     |
[INFO] [stdout] 173 |         error: Box<dyn Diagnostic + Send + Sync>,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `module` is never read
[INFO] [stdout]    --> src/snek/mod.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |         module: 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 `error` is never read
[INFO] [stdout]    --> src/snek/mod.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |         error: Box<dyn Diagnostic + Send + Sync>,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `call` is never read
[INFO] [stdout]    --> src/snek/mod.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         call: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `location` is never read
[INFO] [stdout]    --> src/snek/mod.rs:189:9
[INFO] [stdout]     |
[INFO] [stdout] 189 |         location: Span,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `error` is never read
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         error: Vec<snek::CompileError>,
[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_code` is never read
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         source_code: snek::span::VirtualFile,
[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/snek/mod.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |         expected: usize,
[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 `got` is never read
[INFO] [stdout]    --> src/snek/mod.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         got: usize,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `location` is never read
[INFO] [stdout]    --> src/snek/mod.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         location: Span,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `stmt` is never read
[INFO] [stdout]    --> src/snek/mod.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 139 |         stmt: &'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 `context` is never read
[INFO] [stdout]    --> src/snek/mod.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |         context: &'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 `location` is never read
[INFO] [stdout]    --> src/snek/mod.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         location: Span,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `name` is never read
[INFO] [stdout]    --> src/snek/mod.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |         name: 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 `ident` is never read
[INFO] [stdout]    --> src/snek/mod.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 209 |         ident: 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 `location` is never read
[INFO] [stdout]    --> src/snek/mod.rs:212:9
[INFO] [stdout]     |
[INFO] [stdout] 212 |         location: Span,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `char` is never read
[INFO] [stdout]   --> src/snek/mod.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         char: char,
[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/snek/mod.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |         expected: 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 `expected` is never read
[INFO] [stdout]   --> src/snek/mod.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         expected: 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 `ident` is never read
[INFO] [stdout]    --> src/snek/mod.rs:114:9
[INFO] [stdout]     |
[INFO] [stdout] 114 |         ident: 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 `expected` is never read
[INFO] [stdout]    --> src/snek/mod.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |         expected: &'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 `maybe` is never read
[INFO] [stdout]    --> src/snek/mod.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         maybe: 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 `error` is never read
[INFO] [stdout]    --> src/snek/mod.rs:173:9
[INFO] [stdout]     |
[INFO] [stdout] 173 |         error: Box<dyn Diagnostic + Send + Sync>,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `module` is never read
[INFO] [stdout]    --> src/snek/mod.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |         module: 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 `error` is never read
[INFO] [stdout]    --> src/snek/mod.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |         error: Box<dyn Diagnostic + Send + Sync>,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `call` is never read
[INFO] [stdout]    --> src/snek/mod.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         call: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `location` is never read
[INFO] [stdout]    --> src/snek/mod.rs:189:9
[INFO] [stdout]     |
[INFO] [stdout] 189 |         location: Span,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `error` is never read
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         error: Vec<snek::CompileError>,
[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_code` is never read
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         source_code: snek::span::VirtualFile,
[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<std::path::PathBuf, Infallible>
[INFO] [stdout]    --> src/snek/mod.rs:237:5
[INFO] [stdout]     |
[INFO] [stdout] 237 |     #[rstest]
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the attribute macro `rstest` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::path::PathBuf, Infallible>
[INFO] [stdout]    --> src/snek/mod.rs:251:5
[INFO] [stdout]     |
[INFO] [stdout] 251 |     #[rstest]
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `rstest` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: serpentine@0.1.0: DOCKER_HOST not set, docker related tests will be skipped
[INFO] [stderr] error: could not compile `serpentine` (bin "serpentine" test) due to 2 previous errors; 22 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "552dc6541d25cf1162875849069cd90bf0ee602d32992dc9156ccfe0f3d1b3d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "552dc6541d25cf1162875849069cd90bf0ee602d32992dc9156ccfe0f3d1b3d9", kill_on_drop: false }`
[INFO] [stdout] 552dc6541d25cf1162875849069cd90bf0ee602d32992dc9156ccfe0f3d1b3d9
