[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] testing codec-abc/rustLox against 1.55.0 for beta-1.56-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodec-abc%2FrustLox" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/codec-abc/rustLox on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-8/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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8c84143d08c0623f1327c18f357381657761b1bc5859003d6bb780afebdbe6d
[INFO] running `Command { std: "docker" "start" "-a" "e8c84143d08c0623f1327c18f357381657761b1bc5859003d6bb780afebdbe6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8c84143d08c0623f1327c18f357381657761b1bc5859003d6bb780afebdbe6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8c84143d08c0623f1327c18f357381657761b1bc5859003d6bb780afebdbe6d", kill_on_drop: false }`
[INFO] [stdout] e8c84143d08c0623f1327c18f357381657761b1bc5859003d6bb780afebdbe6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5f0944a4c3a2be7fc3f4dcb96e0e6b2083bd2baf8549c9bcb083d505ceba8a5
[INFO] running `Command { std: "docker" "start" "-a" "b5f0944a4c3a2be7fc3f4dcb96e0e6b2083bd2baf8549c9bcb083d505ceba8a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling generational-arena v0.2.8
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling 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: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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.11s
[INFO] running `Command { std: "docker" "inspect" "b5f0944a4c3a2be7fc3f4dcb96e0e6b2083bd2baf8549c9bcb083d505ceba8a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5f0944a4c3a2be7fc3f4dcb96e0e6b2083bd2baf8549c9bcb083d505ceba8a5", kill_on_drop: false }`
[INFO] [stdout] b5f0944a4c3a2be7fc3f4dcb96e0e6b2083bd2baf8549c9bcb083d505ceba8a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d453e595e9bed2b24497849d0c667ce49fba1289a4f2723a03dc7f9f672dd12b
[INFO] running `Command { std: "docker" "start" "-a" "d453e595e9bed2b24497849d0c667ce49fba1289a4f2723a03dc7f9f672dd12b", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.21s
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d453e595e9bed2b24497849d0c667ce49fba1289a4f2723a03dc7f9f672dd12b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d453e595e9bed2b24497849d0c667ce49fba1289a4f2723a03dc7f9f672dd12b", kill_on_drop: false }`
[INFO] [stdout] d453e595e9bed2b24497849d0c667ce49fba1289a4f2723a03dc7f9f672dd12b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] edd4615610be95b2ea0c4b31b307ed5c5dc7ce991458d0a32fe78079193785f1
[INFO] running `Command { std: "docker" "start" "-a" "edd4615610be95b2ea0c4b31b307ed5c5dc7ce991458d0a32fe78079193785f1", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `jump`
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/chunk.rs:183:21
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 183 |                 let jump = a | b;
[INFO] [stdout] 
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_jump`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `jump`
[INFO] [stderr]    --> src/chunk.rs:193:21
[INFO] [stderr]     |
[INFO] [stderr] 193 |                 let jump = a | b;
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_jump`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `jump`
[INFO] [stderr]    --> src/chunk.rs:202:21
[INFO] [stderr]     |
[INFO] [stderr] 202 |                 let jump = a | b;
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_jump`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `disassemble_chunk`
[INFO] [stderr]   --> src/chunk.rs:73:12
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn disassemble_chunk(&mut self) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `disassemble_instruction`
[INFO] [stderr]   --> src/chunk.rs:81:8
[INFO] [stderr]    |
[INFO] [stderr] 81 |     fn disassemble_instruction(&self, instruction: u8, offset: usize) -> usize {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_object`
[INFO] [stderr]   --> src/value.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn is_object(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `remove_string`
[INFO] [stderr]    --> src/vm.rs:385:12
[INFO] [stderr]     |
[INFO] [stderr] 385 |     pub fn remove_string(&mut self, string: &str) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `dump_stats`
[INFO] [stderr]    --> src/vm.rs:406:12
[INFO] [stderr]     |
[INFO] [stderr] 406 |     pub fn dump_stats(&mut self) {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_lox` (bin "rust_lox" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_lox-4b628f80a0328225)
[INFO] running `Command { std: "docker" "inspect" "edd4615610be95b2ea0c4b31b307ed5c5dc7ce991458d0a32fe78079193785f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edd4615610be95b2ea0c4b31b307ed5c5dc7ce991458d0a32fe78079193785f1", kill_on_drop: false }`
[INFO] [stdout] edd4615610be95b2ea0c4b31b307ed5c5dc7ce991458d0a32fe78079193785f1