[INFO] cloning repository https://github.com/SKyletoft/proof-searcher
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SKyletoft/proof-searcher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSKyletoft%2Fproof-searcher", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSKyletoft%2Fproof-searcher'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0266d95033d0135764a0962c37530bd888f269a1
[INFO] checking SKyletoft/proof-searcher against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSKyletoft%2Fproof-searcher" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/SKyletoft/proof-searcher
[INFO] finished tweaking git repo https://github.com/SKyletoft/proof-searcher
[INFO] tweaked toml for git repo https://github.com/SKyletoft/proof-searcher written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SKyletoft/proof-searcher on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/SKyletoft/proof-searcher 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b97e2f27cc396d7081f8a3a92c6623bf1e7143fca742ca1365dce8c9584a99b
[INFO] running `Command { std: "docker" "start" "-a" "5b97e2f27cc396d7081f8a3a92c6623bf1e7143fca742ca1365dce8c9584a99b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b97e2f27cc396d7081f8a3a92c6623bf1e7143fca742ca1365dce8c9584a99b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b97e2f27cc396d7081f8a3a92c6623bf1e7143fca742ca1365dce8c9584a99b", kill_on_drop: false }`
[INFO] [stdout] 5b97e2f27cc396d7081f8a3a92c6623bf1e7143fca742ca1365dce8c9584a99b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b7a89ed4e8438dbae5b83473711287a57d1babd30c9260a06c949d8034db116
[INFO] running `Command { std: "docker" "start" "-a" "7b7a89ed4e8438dbae5b83473711287a57d1babd30c9260a06c949d8034db116", kill_on_drop: false }`
[INFO] [stderr]     Checking proof-search v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(deref_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(deref_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/main.rs:230:2
[INFO] [stdout]     |
[INFO] [stdout] 228 |     todo!();
[INFO] [stdout]     |     ------- any code following this expression is unreachable
[INFO] [stdout] 229 |
[INFO] [stdout] 230 |     last.insert(new_implication);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_implication`
[INFO] [stdout]    --> src/main.rs:225:44
[INFO] [stdout]     |
[INFO] [stdout] 225 | fn join_implication(node: &mut SearchNode, new_implication: Rc<Proposition>) -> &mut Propositions {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_implication`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last`
[INFO] [stdout]    --> src/main.rs:226:6
[INFO] [stdout]     |
[INFO] [stdout] 226 |     let last = node.last_mut();
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_last`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proof-search` (bin "proof-search") due to 1 previous error; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/main.rs:230:2
[INFO] [stdout]     |
[INFO] [stdout] 228 |     todo!();
[INFO] [stdout]     |     ------- any code following this expression is unreachable
[INFO] [stdout] 229 |
[INFO] [stdout] 230 |     last.insert(new_implication);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_implication`
[INFO] [stdout]    --> src/main.rs:225:44
[INFO] [stdout]     |
[INFO] [stdout] 225 | fn join_implication(node: &mut SearchNode, new_implication: Rc<Proposition>) -> &mut Propositions {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_implication`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last`
[INFO] [stdout]    --> src/main.rs:226:6
[INFO] [stdout]     |
[INFO] [stdout] 226 |     let last = node.last_mut();
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_last`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proof-search` (bin "proof-search" test) due to 1 previous error; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "7b7a89ed4e8438dbae5b83473711287a57d1babd30c9260a06c949d8034db116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b7a89ed4e8438dbae5b83473711287a57d1babd30c9260a06c949d8034db116", kill_on_drop: false }`
[INFO] [stdout] 7b7a89ed4e8438dbae5b83473711287a57d1babd30c9260a06c949d8034db116
