[INFO] cloning repository https://github.com/vishnumrk/v-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vishnumrk/v-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishnumrk%2Fv-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishnumrk%2Fv-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66b306e87d35e23db31e8736eb93b1a3b2940aad
[INFO] checking vishnumrk/v-lang against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishnumrk%2Fv-lang" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vishnumrk/v-lang 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/vishnumrk/v-lang
[INFO] finished tweaking git repo https://github.com/vishnumrk/v-lang
[INFO] tweaked toml for git repo https://github.com/vishnumrk/v-lang written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/vishnumrk/v-lang 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-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd2390f7625d89416ffc7422c0ba5671117ad23d622856833b7285b2d2b144d9
[INFO] running `Command { std: "docker" "start" "-a" "cd2390f7625d89416ffc7422c0ba5671117ad23d622856833b7285b2d2b144d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd2390f7625d89416ffc7422c0ba5671117ad23d622856833b7285b2d2b144d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd2390f7625d89416ffc7422c0ba5671117ad23d622856833b7285b2d2b144d9", kill_on_drop: false }`
[INFO] [stdout] cd2390f7625d89416ffc7422c0ba5671117ad23d622856833b7285b2d2b144d9
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e054188af685e9d0c1fa632ba6d29dcc2507e26708bb53bafb6544a39232e0e8
[INFO] running `Command { std: "docker" "start" "-a" "e054188af685e9d0c1fa632ba6d29dcc2507e26708bb53bafb6544a39232e0e8", kill_on_drop: false }`
[INFO] [stderr]     Checking v-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/runtime/eval/expressions.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 |     env: &mut Environment,
[INFO] [stdout]     |     ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `caller`
[INFO] [stdout]    --> src/runtime/eval/expressions.rs:105:5
[INFO] [stdout]     |
[INFO] [stdout] 105 |     caller: Ast,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_caller`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/runtime/eval/expressions.rs:106:5
[INFO] [stdout]     |
[INFO] [stdout] 106 |     args: Vec<Ast>,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/runtime/environment.rs:28:48
[INFO] [stdout]    |
[INFO] [stdout] 28 |         if self.variables.contains_key(variable.deref()) {
[INFO] [stdout]    |                                                ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Deref`, so calling `deref` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/runtime/eval/expressions.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 |     env: &mut Environment,
[INFO] [stdout]     |     ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `caller`
[INFO] [stdout]    --> src/runtime/eval/expressions.rs:105:5
[INFO] [stdout]     |
[INFO] [stdout] 105 |     caller: Ast,
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_caller`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/runtime/eval/expressions.rs:106:5
[INFO] [stdout]     |
[INFO] [stdout] 106 |     args: Vec<Ast>,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_with_file` is never used
[INFO] [stdout]   --> src/repl_test.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn test_with_file() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/runtime/environment.rs:28:48
[INFO] [stdout]    |
[INFO] [stdout] 28 |         if self.variables.contains_key(variable.deref()) {
[INFO] [stdout]    |                                                ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Deref`, so calling `deref` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "e054188af685e9d0c1fa632ba6d29dcc2507e26708bb53bafb6544a39232e0e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e054188af685e9d0c1fa632ba6d29dcc2507e26708bb53bafb6544a39232e0e8", kill_on_drop: false }`
[INFO] [stdout] e054188af685e9d0c1fa632ba6d29dcc2507e26708bb53bafb6544a39232e0e8