[INFO] cloning repository https://github.com/codec-abc/rustLox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/codec-abc/rustLox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodec-abc%2FrustLox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodec-abc%2FrustLox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af88d8a0992955a112533ffc1c6da47b6abae569
[INFO] checking codec-abc/rustLox against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodec-abc%2FrustLox" "/workspace/builds/worker-47/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-47/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/codec-abc/rustLox on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/codec-abc/rustLox
[INFO] finished tweaking git repo https://github.com/codec-abc/rustLox
[INFO] tweaked toml for git repo https://github.com/codec-abc/rustLox written to /workspace/builds/worker-47/source/Cargo.toml
[INFO] crate git repo https://github.com/codec-abc/rustLox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e1372ad477f5bf1cf6d0e35c10cb39f296d22e2aaa8c028782ccb2a956ffbbd
[INFO] running `Command { std: "docker" "start" "-a" "6e1372ad477f5bf1cf6d0e35c10cb39f296d22e2aaa8c028782ccb2a956ffbbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e1372ad477f5bf1cf6d0e35c10cb39f296d22e2aaa8c028782ccb2a956ffbbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e1372ad477f5bf1cf6d0e35c10cb39f296d22e2aaa8c028782ccb2a956ffbbd", kill_on_drop: false }`
[INFO] [stdout] 6e1372ad477f5bf1cf6d0e35c10cb39f296d22e2aaa8c028782ccb2a956ffbbd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 219dbfab68f1dc7f3e6aeaa5a6d037904031a7e4571efa05b00f6104db929170
[INFO] running `Command { std: "docker" "start" "-a" "219dbfab68f1dc7f3e6aeaa5a6d037904031a7e4571efa05b00f6104db929170", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking generational-arena v0.2.8
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking rust_lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `jump`
[INFO] [stdout]    --> src/chunk.rs:183:21
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 let jump = a | b;
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_jump`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `jump`
[INFO] [stdout]    --> src/chunk.rs:183:21
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 let jump = a | b;
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_jump`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `jump`
[INFO] [stdout]    --> src/chunk.rs:193:21
[INFO] [stdout]     |
[INFO] [stdout] 193 |                 let jump = a | b;
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_jump`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `jump`
[INFO] [stdout]    --> src/chunk.rs:202:21
[INFO] [stdout]     |
[INFO] [stdout] 202 |                 let jump = a | b;
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_jump`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `disassemble_chunk`
[INFO] [stdout]   --> src/chunk.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn disassemble_chunk(&mut self) {
[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: `disassemble_instruction`
[INFO] [stdout]   --> src/chunk.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn disassemble_instruction(&self, instruction: u8, offset: usize) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_object`
[INFO] [stdout]   --> src/value.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn is_object(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_string`
[INFO] [stdout]    --> src/vm.rs:385:12
[INFO] [stdout]     |
[INFO] [stdout] 385 |     pub fn remove_string(&mut self, string: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_stats`
[INFO] [stdout]    --> src/vm.rs:406:12
[INFO] [stdout]     |
[INFO] [stdout] 406 |     pub fn dump_stats(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `jump`
[INFO] [stdout]    --> src/chunk.rs:193:21
[INFO] [stdout]     |
[INFO] [stdout] 193 |                 let jump = a | b;
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_jump`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `jump`
[INFO] [stdout]    --> src/chunk.rs:202:21
[INFO] [stdout]     |
[INFO] [stdout] 202 |                 let jump = a | b;
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_jump`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `disassemble_chunk`
[INFO] [stdout]   --> src/chunk.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn disassemble_chunk(&mut self) {
[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: `disassemble_instruction`
[INFO] [stdout]   --> src/chunk.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn disassemble_instruction(&self, instruction: u8, offset: usize) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_object`
[INFO] [stdout]   --> src/value.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn is_object(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_string`
[INFO] [stdout]    --> src/vm.rs:385:12
[INFO] [stdout]     |
[INFO] [stdout] 385 |     pub fn remove_string(&mut self, string: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_stats`
[INFO] [stdout]    --> src/vm.rs:406:12
[INFO] [stdout]     |
[INFO] [stdout] 406 |     pub fn dump_stats(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.44s
[INFO] running `Command { std: "docker" "inspect" "219dbfab68f1dc7f3e6aeaa5a6d037904031a7e4571efa05b00f6104db929170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "219dbfab68f1dc7f3e6aeaa5a6d037904031a7e4571efa05b00f6104db929170", kill_on_drop: false }`
[INFO] [stdout] 219dbfab68f1dc7f3e6aeaa5a6d037904031a7e4571efa05b00f6104db929170