[INFO] cloning repository https://github.com/RetroRick/snippet_generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RetroRick/snippet_generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRetroRick%2Fsnippet_generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRetroRick%2Fsnippet_generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66e450076991c9bc2163bf73ee0c94df6c7a64f1
[INFO] checking RetroRick/snippet_generator against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRetroRick%2Fsnippet_generator" "/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/RetroRick/snippet_generator on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RetroRick/snippet_generator
[INFO] finished tweaking git repo https://github.com/RetroRick/snippet_generator
[INFO] tweaked toml for git repo https://github.com/RetroRick/snippet_generator written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/RetroRick/snippet_generator 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bb82118a2ecc24a9efb2cd7b1212969c82f78e59c4bc534ba7ca06905f1c04d
[INFO] running `Command { std: "docker" "start" "-a" "7bb82118a2ecc24a9efb2cd7b1212969c82f78e59c4bc534ba7ca06905f1c04d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bb82118a2ecc24a9efb2cd7b1212969c82f78e59c4bc534ba7ca06905f1c04d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bb82118a2ecc24a9efb2cd7b1212969c82f78e59c4bc534ba7ca06905f1c04d", kill_on_drop: false }`
[INFO] [stdout] 7bb82118a2ecc24a9efb2cd7b1212969c82f78e59c4bc534ba7ca06905f1c04d
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a2c70805c7e6d37f3499724b728eb99f6842406e9f58ec0594ffb4be316ca37
[INFO] running `Command { std: "docker" "start" "-a" "6a2c70805c7e6d37f3499724b728eb99f6842406e9f58ec0594ffb4be316ca37", kill_on_drop: false }`
[INFO] [stderr]     Checking snippet_generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `ValidTokens` is never used
[INFO] [stdout]  --> src/tokenizer.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum ValidTokens {
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ValidTokens` is never used
[INFO] [stdout]  --> src/tokenizer.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum ValidTokens {
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ValidTokenMapper` is never constructed
[INFO] [stdout]   --> src/tokenizer.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct ValidTokenMapper{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/tokenizer.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl ValidTokenMapper{
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 28 |     fn new() -> ValidTokenMapper {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ValidTokenMapper` is never constructed
[INFO] [stdout]   --> src/tokenizer.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct ValidTokenMapper{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `validate_token` is never used
[INFO] [stdout]   --> src/tokenizer.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn validate_token(ch: &String) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/tokenizer.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl ValidTokenMapper{
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 28 |     fn new() -> ValidTokenMapper {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `validate_token` is never used
[INFO] [stdout]   --> src/tokenizer.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn validate_token(ch: &String) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "6a2c70805c7e6d37f3499724b728eb99f6842406e9f58ec0594ffb4be316ca37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a2c70805c7e6d37f3499724b728eb99f6842406e9f58ec0594ffb4be316ca37", kill_on_drop: false }`
[INFO] [stdout] 6a2c70805c7e6d37f3499724b728eb99f6842406e9f58ec0594ffb4be316ca37