[INFO] cloning repository https://github.com/arlindohall/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arlindohall/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farlindohall%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farlindohall%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a957ea8017fabcad5d6437c285fb0f6da3417d82
[INFO] checking arlindohall/rlox against try#81275a1445c7502a974118e0c69b795ab60be991 for pr-80243
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farlindohall%2Frlox" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arlindohall/rlox on toolchain 81275a1445c7502a974118e0c69b795ab60be991
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arlindohall/rlox
[INFO] finished tweaking git repo https://github.com/arlindohall/rlox
[INFO] tweaked toml for git repo https://github.com/arlindohall/rlox written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/arlindohall/rlox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66083331c6a92b9b204184acbbbe937024bb40dccc083a7dcf6ab1b629623b20
[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" "66083331c6a92b9b204184acbbbe937024bb40dccc083a7dcf6ab1b629623b20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66083331c6a92b9b204184acbbbe937024bb40dccc083a7dcf6ab1b629623b20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66083331c6a92b9b204184acbbbe937024bb40dccc083a7dcf6ab1b629623b20", kill_on_drop: false }`
[INFO] [stdout] 66083331c6a92b9b204184acbbbe937024bb40dccc083a7dcf6ab1b629623b20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4acc80056e149d613dade64177bb04903b6cc578ad49722a2c2008dc55cb57db
[INFO] running `Command { std: "docker" "start" "-a" "4acc80056e149d613dade64177bb04903b6cc578ad49722a2c2008dc55cb57db", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `get_number`
[INFO] [stdout]   --> src/lox.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn get_number(&self) -> Option<&f64> {
[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: `get_string`
[INFO] [stdout]   --> src/lox.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn get_string(&self) -> Option<&str> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `binary`
[INFO] [stdout]    --> src/lox.rs:430:8
[INFO] [stdout]     |
[INFO] [stdout] 430 |     fn binary(l: Expression, t: Token, r: Expression) -> Expression {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grouping`
[INFO] [stdout]    --> src/lox.rs:434:8
[INFO] [stdout]     |
[INFO] [stdout] 434 |     fn grouping(e: Expression) -> Expression {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `literal`
[INFO] [stdout]    --> src/lox.rs:438:8
[INFO] [stdout]     |
[INFO] [stdout] 438 |     fn literal(l: Literal) -> Expression {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unary`
[INFO] [stdout]    --> src/lox.rs:442:8
[INFO] [stdout]     |
[INFO] [stdout] 442 |     fn unary(t: Token, e: Expression) -> Expression {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `line`
[INFO] [stdout]    --> src/lox.rs:519:5
[INFO] [stdout]     |
[INFO] [stdout] 519 |     line: LineNumber,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_number`
[INFO] [stdout]   --> src/lox.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn get_number(&self) -> Option<&f64> {
[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: `get_string`
[INFO] [stdout]   --> src/lox.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn get_string(&self) -> Option<&str> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `binary`
[INFO] [stdout]    --> src/lox.rs:430:8
[INFO] [stdout]     |
[INFO] [stdout] 430 |     fn binary(l: Expression, t: Token, r: Expression) -> Expression {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grouping`
[INFO] [stdout]    --> src/lox.rs:434:8
[INFO] [stdout]     |
[INFO] [stdout] 434 |     fn grouping(e: Expression) -> Expression {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `literal`
[INFO] [stdout]    --> src/lox.rs:438:8
[INFO] [stdout]     |
[INFO] [stdout] 438 |     fn literal(l: Literal) -> Expression {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unary`
[INFO] [stdout]    --> src/lox.rs:442:8
[INFO] [stdout]     |
[INFO] [stdout] 442 |     fn unary(t: Token, e: Expression) -> Expression {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `line`
[INFO] [stdout]    --> src/lox.rs:519:5
[INFO] [stdout]     |
[INFO] [stdout] 519 |     line: LineNumber,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.54s
[INFO] running `Command { std: "docker" "inspect" "4acc80056e149d613dade64177bb04903b6cc578ad49722a2c2008dc55cb57db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4acc80056e149d613dade64177bb04903b6cc578ad49722a2c2008dc55cb57db", kill_on_drop: false }`
[INFO] [stdout] 4acc80056e149d613dade64177bb04903b6cc578ad49722a2c2008dc55cb57db