[INFO] cloning repository https://github.com/PhantomXero/compiler-frontend
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PhantomXero/compiler-frontend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhantomXero%2Fcompiler-frontend", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhantomXero%2Fcompiler-frontend'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc0c8d891dae80389a0d0211eb38c8161cadc3b8
[INFO] checking PhantomXero/compiler-frontend against master#9e293ae9f8abecb0be5105787d181518c9012a19 for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhantomXero%2Fcompiler-frontend" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/PhantomXero/compiler-frontend
[INFO] finished tweaking git repo https://github.com/PhantomXero/compiler-frontend
[INFO] tweaked toml for git repo https://github.com/PhantomXero/compiler-frontend written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/PhantomXero/compiler-frontend on toolchain 9e293ae9f8abecb0be5105787d181518c9012a19
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e293ae9f8abecb0be5105787d181518c9012a19" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/PhantomXero/compiler-frontend 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" "+9e293ae9f8abecb0be5105787d181518c9012a19" "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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9e293ae9f8abecb0be5105787d181518c9012a19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50cc4ae555fc6e108997540924f10d9bc21c23d1635f54568e0259f01b42e2cd
[INFO] running `Command { std: "docker" "start" "-a" "50cc4ae555fc6e108997540924f10d9bc21c23d1635f54568e0259f01b42e2cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50cc4ae555fc6e108997540924f10d9bc21c23d1635f54568e0259f01b42e2cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50cc4ae555fc6e108997540924f10d9bc21c23d1635f54568e0259f01b42e2cd", kill_on_drop: false }`
[INFO] [stdout] 50cc4ae555fc6e108997540924f10d9bc21c23d1635f54568e0259f01b42e2cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9e293ae9f8abecb0be5105787d181518c9012a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc31156b8a664ffd505e5adfaf2587c80705ea93f89bee3b6f344745622d0119
[INFO] running `Command { std: "docker" "start" "-a" "cc31156b8a664ffd505e5adfaf2587c80705ea93f89bee3b6f344745622d0119", kill_on_drop: false }`
[INFO] [stderr]     Checking tokens v0.1.0 (/opt/rustwide/workdir/tokens)
[INFO] [stdout] warning: fields `token`, `start`, `end`, and `value` are never read
[INFO] [stdout]  --> tokens/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Tokens {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 2 |     token: Token,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     start: usize,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 4 |     end: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 5 |     value: TokenValue,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking lexer v0.1.0 (/opt/rustwide/workdir/lexer)
[INFO] [stderr]     Checking parser v0.1.0 (/opt/rustwide/workdir/parser)
[INFO] [stdout] warning: fields `token`, `start`, `end`, and `value` are never read
[INFO] [stdout]  --> tokens/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Tokens {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 2 |     token: Token,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     start: usize,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 4 |     end: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 5 |     value: TokenValue,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokens::Tokens`
[INFO] [stdout]  --> lexer/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokens::Tokens;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lexer` is never constructed
[INFO] [stdout]  --> lexer/src/lib.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Lexer<'l> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokens::Tokens`
[INFO] [stdout]  --> lexer/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokens::Tokens;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lexer` is never constructed
[INFO] [stdout]  --> lexer/src/lib.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Lexer<'l> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking compiler-frontend v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "cc31156b8a664ffd505e5adfaf2587c80705ea93f89bee3b6f344745622d0119", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc31156b8a664ffd505e5adfaf2587c80705ea93f89bee3b6f344745622d0119", kill_on_drop: false }`
[INFO] [stdout] cc31156b8a664ffd505e5adfaf2587c80705ea93f89bee3b6f344745622d0119