[INFO] cloning repository https://github.com/pacokwon/rustox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pacokwon/rustox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpacokwon%2Frustox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpacokwon%2Frustox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c09ae20b4f4dff2a92e67e3bcef1c267d2422ee7
[INFO] checking pacokwon/rustox against master#4457658f68b5c165cd76d24b8147a8f77b9f660e for pr-107620
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpacokwon%2Frustox" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pacokwon/rustox on toolchain 4457658f68b5c165cd76d24b8147a8f77b9f660e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4457658f68b5c165cd76d24b8147a8f77b9f660e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pacokwon/rustox
[INFO] finished tweaking git repo https://github.com/pacokwon/rustox
[INFO] tweaked toml for git repo https://github.com/pacokwon/rustox written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/pacokwon/rustox 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" "+4457658f68b5c165cd76d24b8147a8f77b9f660e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+4457658f68b5c165cd76d24b8147a8f77b9f660e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3bf56f34175d08d0a65a938eaa0aa22b169737878e22afbfef62af0207e4e968
[INFO] running `Command { std: "docker" "start" "-a" "3bf56f34175d08d0a65a938eaa0aa22b169737878e22afbfef62af0207e4e968", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3bf56f34175d08d0a65a938eaa0aa22b169737878e22afbfef62af0207e4e968", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bf56f34175d08d0a65a938eaa0aa22b169737878e22afbfef62af0207e4e968", kill_on_drop: false }`
[INFO] [stdout] 3bf56f34175d08d0a65a938eaa0aa22b169737878e22afbfef62af0207e4e968
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+4457658f68b5c165cd76d24b8147a8f77b9f660e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6b23fba78eaa8412b2a1e86219c5d5fd3396d25d626a538b40b6fd1737a8d7f
[INFO] running `Command { std: "docker" "start" "-a" "d6b23fba78eaa8412b2a1e86219c5d5fd3396d25d626a538b40b6fd1737a8d7f", kill_on_drop: false }`
[INFO] [stderr]     Checking rustox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `emit_bytes` is never used
[INFO] [stdout]    --> src/compiler.rs:164:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | impl<'src> Compiler<'src> {
[INFO] [stdout]     | ------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 164 |     fn emit_bytes(&mut self, first: u8, second: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `emit_bytes` is never used
[INFO] [stdout]    --> src/compiler.rs:164:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | impl<'src> Compiler<'src> {
[INFO] [stdout]     | ------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 164 |     fn emit_bytes(&mut self, first: u8, second: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` 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 0.13s
[INFO] running `Command { std: "docker" "inspect" "d6b23fba78eaa8412b2a1e86219c5d5fd3396d25d626a538b40b6fd1737a8d7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6b23fba78eaa8412b2a1e86219c5d5fd3396d25d626a538b40b6fd1737a8d7f", kill_on_drop: false }`
[INFO] [stdout] d6b23fba78eaa8412b2a1e86219c5d5fd3396d25d626a538b40b6fd1737a8d7f