[INFO] cloning repository https://github.com/fuyutarow/TeXilla
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fuyutarow/TeXilla" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffuyutarow%2FTeXilla", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffuyutarow%2FTeXilla'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5e4f2722d5f1e8ddff15b867e586b210fe09b539
[INFO] checking fuyutarow/TeXilla against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffuyutarow%2FTeXilla" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fuyutarow/TeXilla on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fuyutarow/TeXilla
[INFO] finished tweaking git repo https://github.com/fuyutarow/TeXilla
[INFO] tweaked toml for git repo https://github.com/fuyutarow/TeXilla written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/fuyutarow/TeXilla 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro-error-attr v0.4.9
[INFO] [stderr]   Downloaded proc-macro-error v0.4.9
[INFO] [stderr]   Downloaded rustversion v1.0.2
[INFO] [stderr]   Downloaded hermit-abi v0.1.8
[INFO] [stderr]   Downloaded proc-macro2 v1.0.9
[INFO] [stderr]   Downloaded syn v1.0.16
[INFO] [stderr]   Downloaded structopt-derive v0.4.2
[INFO] [stderr]   Downloaded aho-corasick v0.7.9
[INFO] [stderr]   Downloaded structopt v0.3.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ec9f84a07c962329eb127f2928eda9ea9c70b37beac49dded3f50a12f100ff0
[INFO] running `Command { std: "docker" "start" "-a" "0ec9f84a07c962329eb127f2928eda9ea9c70b37beac49dded3f50a12f100ff0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ec9f84a07c962329eb127f2928eda9ea9c70b37beac49dded3f50a12f100ff0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ec9f84a07c962329eb127f2928eda9ea9c70b37beac49dded3f50a12f100ff0", kill_on_drop: false }`
[INFO] [stdout] 0ec9f84a07c962329eb127f2928eda9ea9c70b37beac49dded3f50a12f100ff0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0789a5f660ae68ec1453ada4590d77cfa40146452c380abe1eb4b292c405751e
[INFO] running `Command { std: "docker" "start" "-a" "0789a5f660ae68ec1453ada4590d77cfa40146452c380abe1eb4b292c405751e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking aho-corasick v0.7.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling proc-macro-error v0.4.9
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.9
[INFO] [stderr]    Compiling structopt-derive v0.4.2
[INFO] [stderr]     Checking structopt v0.3.9
[INFO] [stderr]     Checking TeXilla v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `out` is never read
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | struct Opt {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     out: Option<String>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `out` is never read
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | struct Opt {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     out: Option<String>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.08s
[INFO] running `Command { std: "docker" "inspect" "0789a5f660ae68ec1453ada4590d77cfa40146452c380abe1eb4b292c405751e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0789a5f660ae68ec1453ada4590d77cfa40146452c380abe1eb4b292c405751e", kill_on_drop: false }`
[INFO] [stdout] 0789a5f660ae68ec1453ada4590d77cfa40146452c380abe1eb4b292c405751e