[INFO] cloning repository https://github.com/esbraff/moonlight-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/esbraff/moonlight-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fesbraff%2Fmoonlight-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fesbraff%2Fmoonlight-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eecd60bd7d4fc89506cfdfcff30ccab6a36295ce
[INFO] checking esbraff/moonlight-lang against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fesbraff%2Fmoonlight-lang" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/esbraff/moonlight-lang on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/esbraff/moonlight-lang
[INFO] finished tweaking git repo https://github.com/esbraff/moonlight-lang
[INFO] tweaked toml for git repo https://github.com/esbraff/moonlight-lang written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/esbraff/moonlight-lang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-4/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23216f1db1eda08f5c82882c0618cc815fe87d11caa9d6916f9439f657ad28cb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "23216f1db1eda08f5c82882c0618cc815fe87d11caa9d6916f9439f657ad28cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23216f1db1eda08f5c82882c0618cc815fe87d11caa9d6916f9439f657ad28cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23216f1db1eda08f5c82882c0618cc815fe87d11caa9d6916f9439f657ad28cb", kill_on_drop: false }`
[INFO] [stdout] 23216f1db1eda08f5c82882c0618cc815fe87d11caa9d6916f9439f657ad28cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0013120484ffd1fab810213f6bd4a55c7a1ab0521b9291a9cb574e4a931869c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b0013120484ffd1fab810213f6bd4a55c7a1ab0521b9291a9cb574e4a931869c", kill_on_drop: false }`
[INFO] [stderr]     Checking moonlight v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]  --> src/stack.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn push(&mut self, value: Value) {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/stack.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn pop(&mut self) -> Value {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bool`
[INFO] [stdout]   --> src/value.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Bool(Bool),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top`
[INFO] [stdout]   --> src/environment.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn top(env: &Environment) -> Environment {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stack`
[INFO] [stdout]   --> src/storage.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     stack: Stack,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]    --> src/storage.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn push(&mut self, value: Value) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]    --> src/storage.rs:111:12
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn pop(&mut self) -> Value {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Return`
[INFO] [stdout]   --> src/expressions.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     Return(Box<Expression>)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]  --> src/stack.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn push(&mut self, value: Value) {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/stack.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn pop(&mut self) -> Value {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bool`
[INFO] [stdout]   --> src/value.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Bool(Bool),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top`
[INFO] [stdout]   --> src/environment.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn top(env: &Environment) -> Environment {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stack`
[INFO] [stdout]   --> src/storage.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     stack: Stack,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]    --> src/storage.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn push(&mut self, value: Value) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]    --> src/storage.rs:111:12
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn pop(&mut self) -> Value {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Return`
[INFO] [stdout]   --> src/expressions.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     Return(Box<Expression>)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "b0013120484ffd1fab810213f6bd4a55c7a1ab0521b9291a9cb574e4a931869c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0013120484ffd1fab810213f6bd4a55c7a1ab0521b9291a9cb574e4a931869c", kill_on_drop: false }`
[INFO] [stdout] b0013120484ffd1fab810213f6bd4a55c7a1ab0521b9291a9cb574e4a931869c