[INFO] cloning repository https://github.com/xxf1996/lang-code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xxf1996/lang-code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxxf1996%2Flang-code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxxf1996%2Flang-code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b72951438f100910414f0764d6f2c31d6c5b85c
[INFO] checking xxf1996/lang-code against master#fc5af1813307d25a84d633f21e2e53c9376eb547 for pr-144386
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxxf1996%2Flang-code" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/xxf1996/lang-code
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/xxf1996/lang-code
[INFO] tweaked toml for git repo https://github.com/xxf1996/lang-code written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/xxf1996/lang-code on toolchain fc5af1813307d25a84d633f21e2e53c9376eb547
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fc5af1813307d25a84d633f21e2e53c9376eb547" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/xxf1996/lang-code 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" "+fc5af1813307d25a84d633f21e2e53c9376eb547" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+fc5af1813307d25a84d633f21e2e53c9376eb547" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e264db52b1ae602bcc8e9fb7e729370ad6b86d5d25caf2d8cd4052dce89c643
[INFO] running `Command { std: "docker" "start" "-a" "1e264db52b1ae602bcc8e9fb7e729370ad6b86d5d25caf2d8cd4052dce89c643", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e264db52b1ae602bcc8e9fb7e729370ad6b86d5d25caf2d8cd4052dce89c643", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e264db52b1ae602bcc8e9fb7e729370ad6b86d5d25caf2d8cd4052dce89c643", kill_on_drop: false }`
[INFO] [stdout] 1e264db52b1ae602bcc8e9fb7e729370ad6b86d5d25caf2d8cd4052dce89c643
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+fc5af1813307d25a84d633f21e2e53c9376eb547" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b8986baecc659504223461f562ab33f07009960a6a742fbe343ddde3d357cfa
[INFO] running `Command { std: "docker" "start" "-a" "4b8986baecc659504223461f562ab33f07009960a6a742fbe343ddde3d357cfa", kill_on_drop: false }`
[INFO] [stderr]     Checking lang-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias `Env` is never used
[INFO] [stdout]   --> examples/tiny-lang-1-and-2.rs:31:6
[INFO] [stdout]    |
[INFO] [stdout] 31 | type Env = Vec<(String, i32)>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Env` is never used
[INFO] [stdout]   --> examples/tiny-lang-1-and-2.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |   pub type Env = Vec<i32>;
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "4b8986baecc659504223461f562ab33f07009960a6a742fbe343ddde3d357cfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b8986baecc659504223461f562ab33f07009960a6a742fbe343ddde3d357cfa", kill_on_drop: false }`
[INFO] [stdout] 4b8986baecc659504223461f562ab33f07009960a6a742fbe343ddde3d357cfa