[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 try#93086cfebfccb79083c59d0d3b2052944bba643c 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-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/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-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/PhantomXero/compiler-frontend on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75b04a76bc2241b593467d3a4dd0eb69271a7382f2d7eff4db944c0ca7f3f7c8
[INFO] running `Command { std: "docker" "start" "-a" "75b04a76bc2241b593467d3a4dd0eb69271a7382f2d7eff4db944c0ca7f3f7c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75b04a76bc2241b593467d3a4dd0eb69271a7382f2d7eff4db944c0ca7f3f7c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75b04a76bc2241b593467d3a4dd0eb69271a7382f2d7eff4db944c0ca7f3f7c8", kill_on_drop: false }`
[INFO] [stdout] 75b04a76bc2241b593467d3a4dd0eb69271a7382f2d7eff4db944c0ca7f3f7c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a167f94fb86ff1df984ef2d8820fb1918c82815d07b79981d2d00655b81d3c4c
[INFO] running `Command { std: "docker" "start" "-a" "a167f94fb86ff1df984ef2d8820fb1918c82815d07b79981d2d00655b81d3c4c", kill_on_drop: false }`
[INFO] [stderr]     Checking tokens v0.1.0 (/opt/rustwide/workdir/tokens)
[INFO] [stdout] error: struct `Tokens` is never constructed
[INFO] [stdout]  --> tokens/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Tokens {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]   = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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] error: could not compile `tokens` (lib test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `Tokens` is never constructed
[INFO] [stdout]  --> tokens/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Tokens {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]   = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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] error: could not compile `tokens` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "a167f94fb86ff1df984ef2d8820fb1918c82815d07b79981d2d00655b81d3c4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a167f94fb86ff1df984ef2d8820fb1918c82815d07b79981d2d00655b81d3c4c", kill_on_drop: false }`
[INFO] [stdout] a167f94fb86ff1df984ef2d8820fb1918c82815d07b79981d2d00655b81d3c4c