[INFO] cloning repository https://github.com/RootOfInfinity/mini-code-contest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RootOfInfinity/mini-code-contest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRootOfInfinity%2Fmini-code-contest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRootOfInfinity%2Fmini-code-contest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b63d49a8641e86518706151767106cc147ba71c6
[INFO] checking RootOfInfinity/mini-code-contest against master#9e293ae9f8abecb0be5105787d181518c9012a19 for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRootOfInfinity%2Fmini-code-contest" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/RootOfInfinity/mini-code-contest
[INFO] finished tweaking git repo https://github.com/RootOfInfinity/mini-code-contest
[INFO] tweaked toml for git repo https://github.com/RootOfInfinity/mini-code-contest written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/RootOfInfinity/mini-code-contest on toolchain 9e293ae9f8abecb0be5105787d181518c9012a19
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e293ae9f8abecb0be5105787d181518c9012a19" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/RootOfInfinity/mini-code-contest already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e293ae9f8abecb0be5105787d181518c9012a19" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded anstyle v1.0.10
[INFO] [stderr]   Downloaded wait-timeout v0.2.0
[INFO] [stderr]   Downloaded assert_cmd v2.0.16
[INFO] [stderr]   Downloaded doc-comment v0.3.3
[INFO] [stderr]   Downloaded bstr v1.11.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9e293ae9f8abecb0be5105787d181518c9012a19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5a430aba451e7305ff6c3857cd74ef857d97efb64e1d726849546d0142ef998
[INFO] running `Command { std: "docker" "start" "-a" "a5a430aba451e7305ff6c3857cd74ef857d97efb64e1d726849546d0142ef998", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5a430aba451e7305ff6c3857cd74ef857d97efb64e1d726849546d0142ef998", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5a430aba451e7305ff6c3857cd74ef857d97efb64e1d726849546d0142ef998", kill_on_drop: false }`
[INFO] [stdout] a5a430aba451e7305ff6c3857cd74ef857d97efb64e1d726849546d0142ef998
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9e293ae9f8abecb0be5105787d181518c9012a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0514f1c3dfbd371b59d2c92a1448d8c797f7aeb72cbda2909c4f9001340acbd
[INFO] running `Command { std: "docker" "start" "-a" "f0514f1c3dfbd371b59d2c92a1448d8c797f7aeb72cbda2909c4f9001340acbd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking predicates-core v1.0.9
[INFO] [stderr]     Checking anstyle v1.0.10
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking termtree v0.5.1
[INFO] [stderr]    Compiling assert_cmd v2.0.16
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking predicates-tree v1.0.12
[INFO] [stderr]     Checking predicates v3.1.3
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking bstr v1.11.3
[INFO] [stderr]     Checking code_challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/core.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/core.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tester.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let mut right = 0;
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/tester.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let mut right = 0;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `input` and `output` are never read
[INFO] [stdout]   --> src/tester.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Test {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 15 |     input: Arc<str>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 16 |     output: Arc<str>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Test` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `test_num`, `description`, and `tests` are never read
[INFO] [stdout]   --> src/tester.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct TestSet {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 20 |     name: Arc<str>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 21 |     test_num: u32,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 22 |     description: Arc<str>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 23 |     tests: Arc<[Test]>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_json` is never used
[INFO] [stdout]   --> src/tester.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl TestSet {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 27 |     fn from_json(testj: JsonValue) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_against_testcases` is never used
[INFO] [stdout]   --> src/tester.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn test_against_testcases(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tester.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let mut right = 0;
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/tester.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let mut right = 0;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compile_it` is never used
[INFO] [stdout]  --> src/compiler.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn compile_it(package: core::CodePackage) -> Result<core::TestablePackage, &'static str> {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `input` and `output` are never read
[INFO] [stdout]   --> src/tester.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Test {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 15 |     input: Arc<str>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 16 |     output: Arc<str>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Test` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `test_num`, `description`, and `tests` are never read
[INFO] [stdout]   --> src/tester.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct TestSet {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 20 |     name: Arc<str>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 21 |     test_num: u32,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 22 |     description: Arc<str>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 23 |     tests: Arc<[Test]>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_json` is never used
[INFO] [stdout]   --> src/tester.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl TestSet {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 27 |     fn from_json(testj: JsonValue) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_against_testcases` is never used
[INFO] [stdout]   --> src/tester.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn test_against_testcases(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.29s
[INFO] running `Command { std: "docker" "inspect" "f0514f1c3dfbd371b59d2c92a1448d8c797f7aeb72cbda2909c4f9001340acbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0514f1c3dfbd371b59d2c92a1448d8c797f7aeb72cbda2909c4f9001340acbd", kill_on_drop: false }`
[INFO] [stdout] f0514f1c3dfbd371b59d2c92a1448d8c797f7aeb72cbda2909c4f9001340acbd