[INFO] cloning repository https://github.com/rrokkam/bytecode-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rrokkam/bytecode-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frrokkam%2Fbytecode-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frrokkam%2Fbytecode-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a10c279904b8e1ff22837d75dbc2eb12d002a72c
[INFO] checking rrokkam/bytecode-interpreter against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frrokkam%2Fbytecode-interpreter" "/workspace/builds/worker-39/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-39/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rrokkam/bytecode-interpreter on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rrokkam/bytecode-interpreter
[INFO] finished tweaking git repo https://github.com/rrokkam/bytecode-interpreter
[INFO] tweaked toml for git repo https://github.com/rrokkam/bytecode-interpreter written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] crate git repo https://github.com/rrokkam/bytecode-interpreter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0e945bcf6f9741b2201c8862cecde75e1faf1897ee42d4fc8270be2b41e819e
[INFO] running `Command { std: "docker" "start" "-a" "c0e945bcf6f9741b2201c8862cecde75e1faf1897ee42d4fc8270be2b41e819e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0e945bcf6f9741b2201c8862cecde75e1faf1897ee42d4fc8270be2b41e819e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0e945bcf6f9741b2201c8862cecde75e1faf1897ee42d4fc8270be2b41e819e", kill_on_drop: false }`
[INFO] [stdout] c0e945bcf6f9741b2201c8862cecde75e1faf1897ee42d4fc8270be2b41e819e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e82e953ca72e877db21a6c19178e7e2ec940d297dc7bcce5e70fea239af86ec
[INFO] running `Command { std: "docker" "start" "-a" "1e82e953ca72e877db21a6c19178e7e2ec940d297dc7bcce5e70fea239af86ec", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking bytecode-interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `next`
[INFO] [stdout]   --> src/parse.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let next = self.tokens.next()?;
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_next`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/parse.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new(tokens: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse`
[INFO] [stdout]   --> src/parse.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn parse(tokens: impl Iterator<Item = Token>) -> impl Iterator<Item = Instruction> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tokenize`
[INFO] [stdout]    --> src/scan.rs:133:8
[INFO] [stdout]     |
[INFO] [stdout] 133 | pub fn tokenize(source: &str) -> impl Iterator<Item = Token> + '_ {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next`
[INFO] [stdout]   --> src/parse.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let next = self.tokens.next()?;
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_next`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "1e82e953ca72e877db21a6c19178e7e2ec940d297dc7bcce5e70fea239af86ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e82e953ca72e877db21a6c19178e7e2ec940d297dc7bcce5e70fea239af86ec", kill_on_drop: false }`
[INFO] [stdout] 1e82e953ca72e877db21a6c19178e7e2ec940d297dc7bcce5e70fea239af86ec