[INFO] cloning repository https://github.com/onContentStop/rusty-jlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/onContentStop/rusty-jlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FonContentStop%2Frusty-jlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FonContentStop%2Frusty-jlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5ee966ffc2e10c2f7c2bed1fc370ef1012d5859c
[INFO] checking onContentStop/rusty-jlox against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FonContentStop%2Frusty-jlox" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/onContentStop/rusty-jlox on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/onContentStop/rusty-jlox
[INFO] finished tweaking git repo https://github.com/onContentStop/rusty-jlox
[INFO] tweaked toml for git repo https://github.com/onContentStop/rusty-jlox written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded exit v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 803d777070c7c06848d745e3dc702a1fa520a494dab7ae41133544fd9c6b2589
[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" "803d777070c7c06848d745e3dc702a1fa520a494dab7ae41133544fd9c6b2589", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "803d777070c7c06848d745e3dc702a1fa520a494dab7ae41133544fd9c6b2589", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "803d777070c7c06848d745e3dc702a1fa520a494dab7ae41133544fd9c6b2589", kill_on_drop: false }`
[INFO] [stdout] 803d777070c7c06848d745e3dc702a1fa520a494dab7ae41133544fd9c6b2589
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3152537c4cbb867a4340939882734622c8f3547a3e20636f6a4dd34046c6db4c
[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" "3152537c4cbb867a4340939882734622c8f3547a3e20636f6a4dd34046c6db4c", kill_on_drop: false }`
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking dyn-clone v1.0.4
[INFO] [stderr]     Checking exit v0.2.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.3
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking jlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a0`
[INFO] [stdout]   --> src/ast/printer.rs:28:37
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn visit_assign_expr(&mut self, a0: &Token, a1: &Expr) -> String {
[INFO] [stdout]    |                                     ^^ help: if this is intentional, prefix it with an underscore: `_a0`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]   --> src/ast/printer.rs:28:49
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn visit_assign_expr(&mut self, a0: &Token, a1: &Expr) -> String {
[INFO] [stdout]    |                                                 ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a0`
[INFO] [stdout]   --> src/ast/printer.rs:28:37
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn visit_assign_expr(&mut self, a0: &Token, a1: &Expr) -> String {
[INFO] [stdout]    |                                     ^^ help: if this is intentional, prefix it with an underscore: `_a0`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]   --> src/ast/printer.rs:28:49
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn visit_assign_expr(&mut self, a0: &Token, a1: &Expr) -> String {
[INFO] [stdout]    |                                                 ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.79s
[INFO] running `Command { std: "docker" "inspect" "3152537c4cbb867a4340939882734622c8f3547a3e20636f6a4dd34046c6db4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3152537c4cbb867a4340939882734622c8f3547a3e20636f6a4dd34046c6db4c", kill_on_drop: false }`
[INFO] [stdout] 3152537c4cbb867a4340939882734622c8f3547a3e20636f6a4dd34046c6db4c