[INFO] cloning repository https://github.com/it1shka/language
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/it1shka/language" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fit1shka%2Flanguage", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fit1shka%2Flanguage'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34bade7d9c3f51c543b14494c5e09237863a8db6
[INFO] checking it1shka/language against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fit1shka%2Flanguage" "/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/it1shka/language 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/it1shka/language
[INFO] finished tweaking git repo https://github.com/it1shka/language
[INFO] tweaked toml for git repo https://github.com/it1shka/language written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/it1shka/language 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] b55cadace709e88d8406ee1789a568bf2471f34d214f4e45143cfbd14ea1e6c7
[INFO] running `Command { std: "docker" "start" "-a" "b55cadace709e88d8406ee1789a568bf2471f34d214f4e45143cfbd14ea1e6c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b55cadace709e88d8406ee1789a568bf2471f34d214f4e45143cfbd14ea1e6c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b55cadace709e88d8406ee1789a568bf2471f34d214f4e45143cfbd14ea1e6c7", kill_on_drop: false }`
[INFO] [stdout] b55cadace709e88d8406ee1789a568bf2471f34d214f4e45143cfbd14ea1e6c7
[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] 27396a2ec4ff2939b07e069795d1b8840eaa39841ead50a8c755e16dee550b6f
[INFO] running `Command { std: "docker" "start" "-a" "27396a2ec4ff2939b07e069795d1b8840eaa39841ead50a8c755e16dee550b6f", kill_on_drop: false }`
[INFO] [stderr]     Checking language v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/launcher/from_file.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/launcher/from_file.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Mem` is more private than the item `MemStack::scope`
[INFO] [stdout]   --> src/runner/storage.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn scope(&mut self) -> &mut Mem {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `MemStack::scope` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Mem` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/runner/storage.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | struct Mem {
[INFO] [stdout]    | ^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Mem` is more private than the item `MemStack::scope`
[INFO] [stdout]   --> src/runner/storage.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn scope(&mut self) -> &mut Mem {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `MemStack::scope` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Mem` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/runner/storage.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | struct Mem {
[INFO] [stdout]    | ^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_ident`, `is_int`, `is_float`, and `is_str` are never used
[INFO] [stdout]   --> src/lexer/token.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 59 | impl Token {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 60 |     pub fn is_ident(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub fn is_int(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     pub fn is_float(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn is_str(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_ident`, `is_int`, `is_float`, and `is_str` are never used
[INFO] [stdout]   --> src/lexer/token.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 59 | impl Token {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 60 |     pub fn is_ident(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub fn is_int(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     pub fn is_float(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn is_str(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "27396a2ec4ff2939b07e069795d1b8840eaa39841ead50a8c755e16dee550b6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27396a2ec4ff2939b07e069795d1b8840eaa39841ead50a8c755e16dee550b6f", kill_on_drop: false }`
[INFO] [stdout] 27396a2ec4ff2939b07e069795d1b8840eaa39841ead50a8c755e16dee550b6f