[INFO] cloning repository https://github.com/encody/algebra
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/encody/algebra" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fencody%2Falgebra", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fencody%2Falgebra'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d5adbf52e0dd7b28df282266089ce7dc6e54980
[INFO] checking encody/algebra against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fencody%2Falgebra" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/encody/algebra
[INFO] finished tweaking git repo https://github.com/encody/algebra
[INFO] tweaked toml for git repo https://github.com/encody/algebra written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/encody/algebra on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/encody/algebra 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bdde5c36bef4c668548070a4a464f8e8344b8088efdb7923bfc58b71b124e713
[INFO] running `Command { std: "docker" "start" "-a" "bdde5c36bef4c668548070a4a464f8e8344b8088efdb7923bfc58b71b124e713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdde5c36bef4c668548070a4a464f8e8344b8088efdb7923bfc58b71b124e713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdde5c36bef4c668548070a4a464f8e8344b8088efdb7923bfc58b71b124e713", kill_on_drop: false }`
[INFO] [stdout] bdde5c36bef4c668548070a4a464f8e8344b8088efdb7923bfc58b71b124e713
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 585861080ac590b3f891799cf3ef2f97e3b2aa0046652e27c1d85ca1b92c67ab
[INFO] running `Command { std: "docker" "start" "-a" "585861080ac590b3f891799cf3ef2f97e3b2aa0046652e27c1d85ca1b92c67ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling winnow v0.7.14
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling relative-path v1.9.3
[INFO] [stderr]    Compiling indexmap v2.12.1
[INFO] [stderr]    Compiling glob v0.3.3
[INFO] [stderr]    Compiling rstest_macros v0.26.1
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling toml_parser v1.0.4
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling toml_edit v0.23.9
[INFO] [stderr]    Compiling proc-macro-crate v3.4.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]     Checking rstest v0.26.1
[INFO] [stderr]     Checking hw01 v0.1.0 (/opt/rustwide/workdir/homework/hw01)
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let a1 = &pi.1;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:126:13
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let a2 = &e2.n;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b2`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let b2 = &pi.2;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:282:28
[INFO] [stdout]     |
[INFO] [stdout] 282 |                 value: (v, a),
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_substituted`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:291:17
[INFO] [stdout]     |
[INFO] [stdout] 291 |             let a_substituted = &e.n;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_substituted`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:336:28
[INFO] [stdout]     |
[INFO] [stdout] 336 |                 value: (v, a),
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_substituted`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:345:17
[INFO] [stdout]     |
[INFO] [stdout] 345 |             let a_substituted = &e.n;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_substituted`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Book` is never constructed
[INFO] [stdout]   --> homework/hw01/src/rule.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Book(Vec<Judgement>);
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hw01` (lib) due to 1 previous error; 7 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let a1 = &pi.1;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:126:13
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let a2 = &e2.n;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b2`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let b2 = &pi.2;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_b2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:282:28
[INFO] [stdout]     |
[INFO] [stdout] 282 |                 value: (v, a),
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_substituted`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:291:17
[INFO] [stdout]     |
[INFO] [stdout] 291 |             let a_substituted = &e.n;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_substituted`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:336:28
[INFO] [stdout]     |
[INFO] [stdout] 336 |                 value: (v, a),
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_substituted`
[INFO] [stdout]    --> homework/hw01/src/rule.rs:345:17
[INFO] [stdout]     |
[INFO] [stdout] 345 |             let a_substituted = &e.n;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_substituted`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Book` is never constructed
[INFO] [stdout]   --> homework/hw01/src/rule.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Book(Vec<Judgement>);
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hw01` (lib test) due to 1 previous error; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "585861080ac590b3f891799cf3ef2f97e3b2aa0046652e27c1d85ca1b92c67ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "585861080ac590b3f891799cf3ef2f97e3b2aa0046652e27c1d85ca1b92c67ab", kill_on_drop: false }`
[INFO] [stdout] 585861080ac590b3f891799cf3ef2f97e3b2aa0046652e27c1d85ca1b92c67ab
