[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 try#9e1116444e23dde580a35d0bf5bbb46c1ce9ce25 for pr-107620-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpacokwon%2Frustox" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pacokwon/rustox on toolchain 9e1116444e23dde580a35d0bf5bbb46c1ce9ce25
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e1116444e23dde580a35d0bf5bbb46c1ce9ce25" "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-5-tc2/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" "+9e1116444e23dde580a35d0bf5bbb46c1ce9ce25" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+9e1116444e23dde580a35d0bf5bbb46c1ce9ce25" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43366aef9b901c1d08b3bd08ddfc4eb957ca0103d7af46a93923b6bada07a638
[INFO] running `Command { std: "docker" "start" "-a" "43366aef9b901c1d08b3bd08ddfc4eb957ca0103d7af46a93923b6bada07a638", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43366aef9b901c1d08b3bd08ddfc4eb957ca0103d7af46a93923b6bada07a638", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43366aef9b901c1d08b3bd08ddfc4eb957ca0103d7af46a93923b6bada07a638", kill_on_drop: false }`
[INFO] [stdout] 43366aef9b901c1d08b3bd08ddfc4eb957ca0103d7af46a93923b6bada07a638
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+9e1116444e23dde580a35d0bf5bbb46c1ce9ce25" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7cc4e90beb4a28ac5be9dd8345b5b742895a9f110d69e36fc1972215c7f9ce67
[INFO] running `Command { std: "docker" "start" "-a" "7cc4e90beb4a28ac5be9dd8345b5b742895a9f110d69e36fc1972215c7f9ce67", 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 0.44s
[INFO] running `Command { std: "docker" "inspect" "7cc4e90beb4a28ac5be9dd8345b5b742895a9f110d69e36fc1972215c7f9ce67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cc4e90beb4a28ac5be9dd8345b5b742895a9f110d69e36fc1972215c7f9ce67", kill_on_drop: false }`
[INFO] [stdout] 7cc4e90beb4a28ac5be9dd8345b5b742895a9f110d69e36fc1972215c7f9ce67