[INFO] cloning repository https://github.com/colbyhall/toy-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/colbyhall/toy-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolbyhall%2Ftoy-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolbyhall%2Ftoy-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 750ebe04fc8970ce562641a64dbe668458cdec46
[INFO] testing colbyhall/toy-lang against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolbyhall%2Ftoy-lang" "/workspace/builds/worker-107/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-107/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/colbyhall/toy-lang on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/colbyhall/toy-lang
[INFO] finished tweaking git repo https://github.com/colbyhall/toy-lang
[INFO] tweaked toml for git repo https://github.com/colbyhall/toy-lang written to /workspace/builds/worker-107/source/Cargo.toml
[INFO] crate git repo https://github.com/colbyhall/toy-lang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b9336820a92ddac07f8bbaa0987e282b7ac118207ac192f928e530910f48b4b
[INFO] running `Command { std: "docker" "start" "-a" "0b9336820a92ddac07f8bbaa0987e282b7ac118207ac192f928e530910f48b4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b9336820a92ddac07f8bbaa0987e282b7ac118207ac192f928e530910f48b4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b9336820a92ddac07f8bbaa0987e282b7ac118207ac192f928e530910f48b4b", kill_on_drop: false }`
[INFO] [stdout] 0b9336820a92ddac07f8bbaa0987e282b7ac118207ac192f928e530910f48b4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4950bc0b3d7b5f74d9420e39ec37a2f3d016a8b20d7df5b6e6aeb120a6c16358
[INFO] running `Command { std: "docker" "start" "-a" "4950bc0b3d7b5f74d9420e39ec37a2f3d016a8b20d7df5b6e6aeb120a6c16358", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling toy-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `analyzer::*`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use analyzer::*;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `analyzer`
[INFO] [stdout]   --> src/analyzer.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut analyzer = Analyzer { ast };
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_analyzer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/analyzer.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut analyzer = Analyzer { ast };
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bang`
[INFO] [stdout]   --> src/lexer.rs:37:2
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Bang,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]    --> src/parser.rs:119:2
[INFO] [stdout]     |
[INFO] [stdout] 119 |     name: Token,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `expression`
[INFO] [stdout]    --> src/parser.rs:120:2
[INFO] [stdout]     |
[INFO] [stdout] 120 |     expression: Expression,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `TypeInfo`
[INFO] [stdout]  --> src/analyzer.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum TypeInfo {}
[INFO] [stdout]   |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `AnalyzerError`
[INFO] [stdout]  --> src/analyzer.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum AnalyzerError {}
[INFO] [stdout]   |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Analyzer`
[INFO] [stdout]  --> src/analyzer.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Analyzer {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `analyze`
[INFO] [stdout]   --> src/analyzer.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn analyze(ast: Ast) -> Result<(), AnalyzerError> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.28s
[INFO] running `Command { std: "docker" "inspect" "4950bc0b3d7b5f74d9420e39ec37a2f3d016a8b20d7df5b6e6aeb120a6c16358", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4950bc0b3d7b5f74d9420e39ec37a2f3d016a8b20d7df5b6e6aeb120a6c16358", kill_on_drop: false }`
[INFO] [stdout] 4950bc0b3d7b5f74d9420e39ec37a2f3d016a8b20d7df5b6e6aeb120a6c16358
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1383e0921264bf240ce60fc3457ecce18ee392cccda2855b4ac615855bf2b204
[INFO] running `Command { std: "docker" "start" "-a" "1383e0921264bf240ce60fc3457ecce18ee392cccda2855b4ac615855bf2b204", kill_on_drop: false }`
[INFO] [stderr]    Compiling toy-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `analyzer::*`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use analyzer::*;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `analyzer`
[INFO] [stdout]   --> src/analyzer.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut analyzer = Analyzer { ast };
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_analyzer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/analyzer.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut analyzer = Analyzer { ast };
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bang`
[INFO] [stdout]   --> src/lexer.rs:37:2
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Bang,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]    --> src/parser.rs:119:2
[INFO] [stdout]     |
[INFO] [stdout] 119 |     name: Token,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `expression`
[INFO] [stdout]    --> src/parser.rs:120:2
[INFO] [stdout]     |
[INFO] [stdout] 120 |     expression: Expression,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `TypeInfo`
[INFO] [stdout]  --> src/analyzer.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum TypeInfo {}
[INFO] [stdout]   |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `AnalyzerError`
[INFO] [stdout]  --> src/analyzer.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum AnalyzerError {}
[INFO] [stdout]   |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Analyzer`
[INFO] [stdout]  --> src/analyzer.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Analyzer {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `analyze`
[INFO] [stdout]   --> src/analyzer.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn analyze(ast: Ast) -> Result<(), AnalyzerError> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.94s
[INFO] running `Command { std: "docker" "inspect" "1383e0921264bf240ce60fc3457ecce18ee392cccda2855b4ac615855bf2b204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1383e0921264bf240ce60fc3457ecce18ee392cccda2855b4ac615855bf2b204", kill_on_drop: false }`
[INFO] [stdout] 1383e0921264bf240ce60fc3457ecce18ee392cccda2855b4ac615855bf2b204
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d5e2ad70f73e2935f44f8ab3f1a60ce8b76bbc77760cd285b04be006b7bee036
[INFO] running `Command { std: "docker" "start" "-a" "d5e2ad70f73e2935f44f8ab3f1a60ce8b76bbc77760cd285b04be006b7bee036", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `analyzer::*`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use analyzer::*;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `analyzer`
[INFO] [stderr]   --> src/analyzer.rs:13:11
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let mut analyzer = Analyzer { ast };
[INFO] [stderr]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_analyzer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/analyzer.rs:13:7
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let mut analyzer = Analyzer { ast };
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bang`
[INFO] [stderr]   --> src/lexer.rs:37:2
[INFO] [stderr]    |
[INFO] [stderr] 37 |     Bang,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `name`
[INFO] [stderr]    --> src/parser.rs:119:2
[INFO] [stderr]     |
[INFO] [stderr] 119 |     name: Token,
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `expression`
[INFO] [stderr]    --> src/parser.rs:120:2
[INFO] [stderr]     |
[INFO] [stderr] 120 |     expression: Expression,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `TypeInfo`
[INFO] [stderr]  --> src/analyzer.rs:3:10
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub enum TypeInfo {}
[INFO] [stderr]   |          ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `AnalyzerError`
[INFO] [stderr]  --> src/analyzer.rs:5:10
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub enum AnalyzerError {}
[INFO] [stderr]   |          ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Analyzer`
[INFO] [stderr]  --> src/analyzer.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct Analyzer {
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `analyze`
[INFO] [stderr]   --> src/analyzer.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn analyze(ast: Ast) -> Result<(), AnalyzerError> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `toy-lang` (bin "toy-lang" test) generated 10 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/toy_lang-2dc68d6c51176bd0)
[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" "d5e2ad70f73e2935f44f8ab3f1a60ce8b76bbc77760cd285b04be006b7bee036", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5e2ad70f73e2935f44f8ab3f1a60ce8b76bbc77760cd285b04be006b7bee036", kill_on_drop: false }`
[INFO] [stdout] d5e2ad70f73e2935f44f8ab3f1a60ce8b76bbc77760cd285b04be006b7bee036