[INFO] cloning repository https://github.com/SeanBarry/rust-super-tiny-compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SeanBarry/rust-super-tiny-compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSeanBarry%2Frust-super-tiny-compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSeanBarry%2Frust-super-tiny-compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9f7a15d9e53551ec4ab671f6b2d9d59df81eb91
[INFO] testing SeanBarry/rust-super-tiny-compiler against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSeanBarry%2Frust-super-tiny-compiler" "/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/SeanBarry/rust-super-tiny-compiler on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SeanBarry/rust-super-tiny-compiler
[INFO] finished tweaking git repo https://github.com/SeanBarry/rust-super-tiny-compiler
[INFO] tweaked toml for git repo https://github.com/SeanBarry/rust-super-tiny-compiler written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/SeanBarry/rust-super-tiny-compiler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a137af0fe34d718504bdc04e4bfe0cb57eb756f3a665c160e7adf2fd40575c5
[INFO] running `Command { std: "docker" "start" "-a" "7a137af0fe34d718504bdc04e4bfe0cb57eb756f3a665c160e7adf2fd40575c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a137af0fe34d718504bdc04e4bfe0cb57eb756f3a665c160e7adf2fd40575c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a137af0fe34d718504bdc04e4bfe0cb57eb756f3a665c160e7adf2fd40575c5", kill_on_drop: false }`
[INFO] [stdout] 7a137af0fe34d718504bdc04e4bfe0cb57eb756f3a665c160e7adf2fd40575c5
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4566ef21a3461c7170f6d6a3a8b239f88ce65ba5cbe2e4430a4119b4687bc0d
[INFO] running `Command { std: "docker" "start" "-a" "d4566ef21a3461c7170f6d6a3a8b239f88ce65ba5cbe2e4430a4119b4687bc0d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]  --> src/parser.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn parse_tokens(tokens: Vec<Token>) -> Result<i32, String> {
[INFO] [stdout]   |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_tokens`
[INFO] [stdout]  --> src/parser.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn parse_tokens(tokens: Vec<Token>) -> Result<i32, String> {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     tokeniser::create_tokens(String::from("(add 2 (subtract 4 2))!"));
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "d4566ef21a3461c7170f6d6a3a8b239f88ce65ba5cbe2e4430a4119b4687bc0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4566ef21a3461c7170f6d6a3a8b239f88ce65ba5cbe2e4430a4119b4687bc0d", kill_on_drop: false }`
[INFO] [stdout] d4566ef21a3461c7170f6d6a3a8b239f88ce65ba5cbe2e4430a4119b4687bc0d
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67a9012e2d67e9b3dddaf2bd3bf9af4cd30b9e10ab532eb27e5896e68738be96
[INFO] running `Command { std: "docker" "start" "-a" "67a9012e2d67e9b3dddaf2bd3bf9af4cd30b9e10ab532eb27e5896e68738be96", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]  --> src/parser.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn parse_tokens(tokens: Vec<Token>) -> Result<i32, String> {
[INFO] [stdout]   |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_tokens`
[INFO] [stdout]  --> src/parser.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn parse_tokens(tokens: Vec<Token>) -> Result<i32, String> {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     tokeniser::create_tokens(String::from("(add 2 (subtract 4 2))!"));
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "67a9012e2d67e9b3dddaf2bd3bf9af4cd30b9e10ab532eb27e5896e68738be96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67a9012e2d67e9b3dddaf2bd3bf9af4cd30b9e10ab532eb27e5896e68738be96", kill_on_drop: false }`
[INFO] [stdout] 67a9012e2d67e9b3dddaf2bd3bf9af4cd30b9e10ab532eb27e5896e68738be96
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1d8137b4ae9bbaffecbf4d9770492d7f1886e8acbd27c1e12701e1c0d9f1c55c
[INFO] running `Command { std: "docker" "start" "-a" "1d8137b4ae9bbaffecbf4d9770492d7f1886e8acbd27c1e12701e1c0d9f1c55c", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]  --> src/parser.rs:3:21
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn parse_tokens(tokens: Vec<Token>) -> Result<i32, String> {
[INFO] [stderr]   |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_tokens`
[INFO] [stderr]  --> src/parser.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn parse_tokens(tokens: Vec<Token>) -> Result<i32, String> {
[INFO] [stderr]   |        ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     tokeniser::create_tokens(String::from("(add 2 (subtract 4 2))!"));
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-compiler` (bin "rust-compiler" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_compiler-ea07293e66648626)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1d8137b4ae9bbaffecbf4d9770492d7f1886e8acbd27c1e12701e1c0d9f1c55c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d8137b4ae9bbaffecbf4d9770492d7f1886e8acbd27c1e12701e1c0d9f1c55c", kill_on_drop: false }`
[INFO] [stdout] 1d8137b4ae9bbaffecbf4d9770492d7f1886e8acbd27c1e12701e1c0d9f1c55c