[INFO] cloning repository https://github.com/David-G96/anon-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/David-G96/anon-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDavid-G96%2Fanon-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDavid-G96%2Fanon-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f734e77a7cc91c39dde805b4a1460775bcf0fa31
[INFO] checking David-G96/anon-lang 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%2FDavid-G96%2Fanon-lang" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/David-G96/anon-lang
[INFO] finished tweaking git repo https://github.com/David-G96/anon-lang
[INFO] tweaked toml for git repo https://github.com/David-G96/anon-lang written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/David-G96/anon-lang 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/David-G96/anon-lang 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 4095a67c9b1e8ce09c1ea33ba3c2b8c19ce8b709b2010a3c2687598796345177
[INFO] running `Command { std: "docker" "start" "-a" "4095a67c9b1e8ce09c1ea33ba3c2b8c19ce8b709b2010a3c2687598796345177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4095a67c9b1e8ce09c1ea33ba3c2b8c19ce8b709b2010a3c2687598796345177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4095a67c9b1e8ce09c1ea33ba3c2b8c19ce8b709b2010a3c2687598796345177", kill_on_drop: false }`
[INFO] [stdout] 4095a67c9b1e8ce09c1ea33ba3c2b8c19ce8b709b2010a3c2687598796345177
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 138b3daeb97e4bb4e99575049711c3fb6abb93d457356982fead391c362e1e74
[INFO] running `Command { std: "docker" "start" "-a" "138b3daeb97e4bb4e99575049711c3fb6abb93d457356982fead391c362e1e74", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling unicode-ident v1.0.20
[INFO] [stderr]     Checking colored v3.0.0
[INFO] [stderr]     Checking hashbrown v0.15.5
[INFO] [stderr]     Checking pest v2.8.3
[INFO] [stderr]    Compiling pest_meta v2.8.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]     Checking anon-cli v0.1.0 (/opt/rustwide/workdir/crates/anon-cli)
[INFO] [stdout] warning: struct `Cli` is never constructed
[INFO] [stdout]  --> crates/anon-cli/src/cli.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Cli {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `run` are never used
[INFO] [stdout]   --> crates/anon-cli/src/cli.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Cli {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn run(&self, args: Vec<String>) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Command` is never constructed
[INFO] [stdout]   --> crates/anon-cli/src/cli.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Command {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `process` and `help` are never used
[INFO] [stdout]   --> crates/anon-cli/src/cli.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Command {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 36 |     pub fn process(&self, args: &Vec<String>) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn help() -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `option` are never read
[INFO] [stdout]   --> crates/anon-cli/src/cli.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Command {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 30 |     pub name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 31 |     pub option: Vec<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]     Checking string-interner v0.19.0
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]     Checking anon-core v0.1.0 (/opt/rustwide/workdir/crates/anon-core)
[INFO] [stdout] warning: field `bag` is never read
[INFO] [stdout]    --> crates/anon-core/src/diagnostic.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub struct DiagnosticCollector {
[INFO] [stdout]     |            ------------------- field in this struct
[INFO] [stdout] 102 |     bag: Vec<Box<dyn Diagnostic>>,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DiagnosticCollector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking anon-ast v0.1.0 (/opt/rustwide/workdir/crates/anon-ast)
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> crates/anon-ast/src/sig.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `constraints`, and `arrow` are never read
[INFO] [stdout]   --> crates/anon-ast/src/sig.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Sig {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 13 |     name: Symbol,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 14 |     constraints: HashMap<Symbol, HashSet<Symbol>>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 15 |     arrow: Vec<Symbol>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Sig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Sig, ParseSigError>
[INFO] [stdout]   --> crates/anon-ast/src/sig.rs:23:53
[INFO] [stdout]    |
[INFO] [stdout] 23 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 24 | |         unimplemented!()
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `anon-ast` (lib) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> crates/anon-ast/src/sig.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `constraints`, and `arrow` are never read
[INFO] [stdout]   --> crates/anon-ast/src/sig.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Sig {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 13 |     name: Symbol,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 14 |     constraints: HashMap<Symbol, HashSet<Symbol>>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 15 |     arrow: Vec<Symbol>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Sig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Sig, ParseSigError>
[INFO] [stdout]   --> crates/anon-ast/src/sig.rs:23:53
[INFO] [stdout]    |
[INFO] [stdout] 23 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 24 | |         unimplemented!()
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `bag` is never read
[INFO] [stdout]    --> crates/anon-core/src/diagnostic.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub struct DiagnosticCollector {
[INFO] [stdout]     |            ------------------- field in this struct
[INFO] [stdout] 102 |     bag: Vec<Box<dyn Diagnostic>>,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DiagnosticCollector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `anon-ast` (lib test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "138b3daeb97e4bb4e99575049711c3fb6abb93d457356982fead391c362e1e74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "138b3daeb97e4bb4e99575049711c3fb6abb93d457356982fead391c362e1e74", kill_on_drop: false }`
[INFO] [stdout] 138b3daeb97e4bb4e99575049711c3fb6abb93d457356982fead391c362e1e74
