[INFO] cloning repository https://github.com/ironlang/iron
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ironlang/iron" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fironlang%2Firon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fironlang%2Firon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2047132614d6e1f39fc30026cb7a7e6c51f76eb5
[INFO] testing ironlang/iron against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fironlang%2Firon" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ironlang/iron on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ironlang/iron
[INFO] finished tweaking git repo https://github.com/ironlang/iron
[INFO] tweaked toml for git repo https://github.com/ironlang/iron written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/ironlang/iron already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 85e1d86a776879128d06d16914ea52977d5be76a781d446b0cd02f05f1b6fd64
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "85e1d86a776879128d06d16914ea52977d5be76a781d446b0cd02f05f1b6fd64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85e1d86a776879128d06d16914ea52977d5be76a781d446b0cd02f05f1b6fd64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85e1d86a776879128d06d16914ea52977d5be76a781d446b0cd02f05f1b6fd64", kill_on_drop: false }`
[INFO] [stdout] 85e1d86a776879128d06d16914ea52977d5be76a781d446b0cd02f05f1b6fd64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ba2aea1621bd6bae099aed036dd31dcbe61a16d94dbb93d5938b492767a7826d
[INFO] running `Command { std: "docker" "start" "-a" "ba2aea1621bd6bae099aed036dd31dcbe61a16d94dbb93d5938b492767a7826d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling cc v1.0.65
[INFO] [stderr]    Compiling syn v1.0.50
[INFO] [stderr]    Compiling iron_ast v0.1.0 (/opt/rustwide/workdir/iron_ast)
[INFO] [stderr]    Compiling smallvec v1.5.0
[INFO] [stderr]    Compiling inkwell v0.1.0 (https://github.com/TheDan64/inkwell?branch=master#948d2e3a)
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling iron_lexer v0.1.0 (/opt/rustwide/workdir/iron_lexer)
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling iron_codegen v0.1.0 (/opt/rustwide/workdir/iron_codegen)
[INFO] [stderr]    Compiling llvm-sys v90.2.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling iron_parser v0.1.0 (/opt/rustwide/workdir/iron_parser)
[INFO] [stdout] warning: unused import: `crate::parse_tokens`
[INFO] [stdout]  --> iron_parser/src/module.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::parse_tokens;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iron_ast`
[INFO] [stdout]  --> iron_parser/src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use iron_ast;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> iron_parser/src/lib.rs:47:28
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn parse_public_definition(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> iron_parser/src/lib.rs:51:19
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn parse_function(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stdout]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> iron_parser/src/lib.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn parse_import(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> iron_parser/src/lib.rs:59:15
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn parse_type(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stdout]    |               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parameter`
[INFO] [stdout]  --> iron_parser/src/expression.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Parameter {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Value`
[INFO] [stdout]  --> iron_parser/src/expression.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum Value {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expression`
[INFO] [stdout]   --> iron_parser/src/expression.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum Expression {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `path`
[INFO] [stdout]   --> iron_parser/src/module.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     path: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Module` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> iron_parser/src/module.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Op`
[INFO] [stdout]  --> iron_parser/src/op.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Op {
[INFO] [stdout]   |          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling forge v0.1.0 (/opt/rustwide/workdir/forge)
[INFO] [stderr]    Compiling inkwell_internals v0.2.0 (https://github.com/TheDan64/inkwell?branch=master#948d2e3a)
[INFO] [stderr]    Compiling iron_codegen_llvm v0.1.0 (/opt/rustwide/workdir/iron_codegen_llvm)
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> iron_codegen_llvm/src/lib.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn compile_module(node: IronASTNode) -> Result<(), IronCodegenError> {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.44s
[INFO] running `Command { std: "docker" "inspect" "ba2aea1621bd6bae099aed036dd31dcbe61a16d94dbb93d5938b492767a7826d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba2aea1621bd6bae099aed036dd31dcbe61a16d94dbb93d5938b492767a7826d", kill_on_drop: false }`
[INFO] [stdout] ba2aea1621bd6bae099aed036dd31dcbe61a16d94dbb93d5938b492767a7826d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 94c1c6cf5c12eb28c0d8fb4e240a87e1238b973fd95cf8861bc132eeedd5fc7a
[INFO] running `Command { std: "docker" "start" "-a" "94c1c6cf5c12eb28c0d8fb4e240a87e1238b973fd95cf8861bc132eeedd5fc7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling iron_ast v0.1.0 (/opt/rustwide/workdir/iron_ast)
[INFO] [stderr]    Compiling iron_lexer v0.1.0 (/opt/rustwide/workdir/iron_lexer)
[INFO] [stderr]    Compiling iron_codegen v0.1.0 (/opt/rustwide/workdir/iron_codegen)
[INFO] [stderr]    Compiling iron_parser v0.1.0 (/opt/rustwide/workdir/iron_parser)
[INFO] [stderr]    Compiling forge v0.1.0 (/opt/rustwide/workdir/forge)
[INFO] [stderr]    Compiling iron_codegen_llvm v0.1.0 (/opt/rustwide/workdir/iron_codegen_llvm)
[INFO] [stdout] warning: unused import: `crate::parse_tokens`
[INFO] [stdout]  --> iron_parser/src/module.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::parse_tokens;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iron_ast`
[INFO] [stdout]  --> iron_parser/src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use iron_ast;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> iron_parser/src/lib.rs:47:28
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn parse_public_definition(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> iron_parser/src/lib.rs:51:19
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn parse_function(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stdout]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> iron_parser/src/lib.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn parse_import(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> iron_parser/src/lib.rs:59:15
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn parse_type(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stdout]    |               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parameter`
[INFO] [stdout]  --> iron_parser/src/expression.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Parameter {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Value`
[INFO] [stdout]  --> iron_parser/src/expression.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum Value {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expression`
[INFO] [stdout]   --> iron_parser/src/expression.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum Expression {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `path`
[INFO] [stdout]   --> iron_parser/src/module.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     path: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Module` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> iron_parser/src/module.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Op`
[INFO] [stdout]  --> iron_parser/src/op.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Op {
[INFO] [stdout]   |          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> iron_codegen_llvm/src/lib.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn compile_module(node: IronASTNode) -> Result<(), IronCodegenError> {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::parse_tokens`
[INFO] [stdout]  --> iron_parser/src/module.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::parse_tokens;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iron_ast`
[INFO] [stdout]  --> iron_parser/src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use iron_ast;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> iron_codegen_llvm/src/lib.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn compile_module(node: IronASTNode) -> Result<(), IronCodegenError> {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> iron_parser/src/lib.rs:47:28
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn parse_public_definition(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> iron_parser/src/lib.rs:51:19
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn parse_function(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stdout]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> iron_parser/src/lib.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn parse_import(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> iron_parser/src/lib.rs:59:15
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn parse_type(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stdout]    |               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parameter`
[INFO] [stdout]  --> iron_parser/src/expression.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Parameter {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Value`
[INFO] [stdout]  --> iron_parser/src/expression.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum Value {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expression`
[INFO] [stdout]   --> iron_parser/src/expression.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum Expression {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `path`
[INFO] [stdout]   --> iron_parser/src/module.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     path: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Module` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> iron_parser/src/module.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Op`
[INFO] [stdout]  --> iron_parser/src/op.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Op {
[INFO] [stdout]   |          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.43s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/forge-1ac60e37ed47da84)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/iron_ast-29409d5767496f81)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/iron_codegen-91625c680e8697e9)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/iron_codegen_llvm-63aa5c98f60f208a)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/iron_lexer-fcf2f2ed6c888f36)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/iron_parser-53e23d50bdbc794c)
[INFO] running `Command { std: "docker" "inspect" "94c1c6cf5c12eb28c0d8fb4e240a87e1238b973fd95cf8861bc132eeedd5fc7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94c1c6cf5c12eb28c0d8fb4e240a87e1238b973fd95cf8861bc132eeedd5fc7a", kill_on_drop: false }`
[INFO] [stdout] 94c1c6cf5c12eb28c0d8fb4e240a87e1238b973fd95cf8861bc132eeedd5fc7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1e4fef514251114adbc639e9e6e6fd89a21f51ae620f627fa1e1cd29995c8539
[INFO] running `Command { std: "docker" "start" "-a" "1e4fef514251114adbc639e9e6e6fd89a21f51ae620f627fa1e1cd29995c8539", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `crate::parse_tokens`
[INFO] [stdout] 
[INFO] [stderr]  --> iron_parser/src/module.rs:3:5
[INFO] [stdout] running 0 tests
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr] 3 | use crate::parse_tokens;
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `iron_ast`
[INFO] [stderr]  --> iron_parser/src/lib.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use iron_ast;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> iron_parser/src/lib.rs:47:28
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn parse_public_definition(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stderr]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> iron_parser/src/lib.rs:51:19
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn parse_function(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stderr]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> iron_parser/src/lib.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn parse_import(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stderr]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> iron_parser/src/lib.rs:59:15
[INFO] [stderr]    |
[INFO] [stderr] 59 | fn parse_type(tokens: &mut Peekable<IntoIter<Token>>) {
[INFO] [stderr]    |               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parameter`
[INFO] [stderr]  --> iron_parser/src/expression.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Parameter {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Value`
[INFO] [stderr]  --> iron_parser/src/expression.rs:6:10
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub enum Value {
[INFO] [stderr]   |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Expression`
[INFO] [stderr]   --> iron_parser/src/expression.rs:12:10
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub enum Expression {
[INFO] [stderr]    |          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `path`
[INFO] [stderr]   --> iron_parser/src/module.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     path: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Module` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> iron_parser/src/module.rs:19:10
[INFO] [stderr]    |
[INFO] [stderr] 19 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Op`
[INFO] [stderr]  --> iron_parser/src/op.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub enum Op {
[INFO] [stderr]   |          ^^
[INFO] [stderr] 
[INFO] [stderr] warning: `iron_parser` (lib) generated 11 warnings
[INFO] [stderr] warning: `iron_parser` (lib test) generated 11 warnings (11 duplicates)
[INFO] [stderr] warning: unused variable: `node`
[INFO] [stderr]   --> iron_codegen_llvm/src/lib.rs:10:23
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fn compile_module(node: IronASTNode) -> Result<(), IronCodegenError> {
[INFO] [stderr]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `iron_codegen_llvm` (lib) generated 1 warning
[INFO] [stderr] warning: `iron_codegen_llvm` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/forge-1ac60e37ed47da84)
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/iron_ast-29409d5767496f81)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test ast::tests::test_module ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/iron_codegen-91625c680e8697e9)
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/iron_codegen_llvm-63aa5c98f60f208a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/iron_lexer-fcf2f2ed6c888f36)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test token::keyword::tests::display_impl ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/iron_parser-53e23d50bdbc794c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests iron_ast
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests iron_codegen
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests iron_codegen_llvm
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests iron_lexer
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/into_tokens.rs - into_tokens::String::into_tokens (line 19) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.73s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests iron_parser
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1e4fef514251114adbc639e9e6e6fd89a21f51ae620f627fa1e1cd29995c8539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e4fef514251114adbc639e9e6e6fd89a21f51ae620f627fa1e1cd29995c8539", kill_on_drop: false }`
[INFO] [stdout] 1e4fef514251114adbc639e9e6e6fd89a21f51ae620f627fa1e1cd29995c8539