[INFO] cloning repository https://github.com/lctr/Ryg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lctr/Ryg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flctr%2FRyg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flctr%2FRyg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f35b71bc2b8ccb6509f34d2b089f293a341f1754
[INFO] testing lctr/Ryg against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flctr%2FRyg" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lctr/Ryg 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/lctr/Ryg
[INFO] finished tweaking git repo https://github.com/lctr/Ryg
[INFO] tweaked toml for git repo https://github.com/lctr/Ryg written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/lctr/Ryg 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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] ece4566225b710a7b5b42791bd7dfd2240512ab3d01f27ae7aedc4fed12d7dda
[INFO] running `Command { std: "docker" "start" "-a" "ece4566225b710a7b5b42791bd7dfd2240512ab3d01f27ae7aedc4fed12d7dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ece4566225b710a7b5b42791bd7dfd2240512ab3d01f27ae7aedc4fed12d7dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ece4566225b710a7b5b42791bd7dfd2240512ab3d01f27ae7aedc4fed12d7dda", kill_on_drop: false }`
[INFO] [stdout] ece4566225b710a7b5b42791bd7dfd2240512ab3d01f27ae7aedc4fed12d7dda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 165d84b30deab42e8af61dd2b00ec3bfda51b0db8d68f0f9fc3926300c93b08a
[INFO] running `Command { std: "docker" "start" "-a" "165d84b30deab42e8af61dd2b00ec3bfda51b0db8d68f0f9fc3926300c93b08a", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0583]: file not found for module `halt`
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | mod halt;
[INFO] [stdout]   | ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: to create the module `halt`, create file "src/halt.rs" or "src/halt/mod.rs"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::halt::Halt`
[INFO] [stdout]  --> src/evaluating/values.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::halt::Halt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ no `Halt` in `halt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rc::Rc`
[INFO] [stdout]  --> src/evaluating/environment.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashMap, rc::Rc};
[INFO] [stdout]   |                                 ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Atom`, `main`
[INFO] [stdout]  --> src/evaluating/environment.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 |   evaluating::values::{Atom, RygVal},
[INFO] [stdout]   |                        ^^^^
[INFO] [stdout] 5 |   main,
[INFO] [stdout]   |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `evaluating::evaluator::walk`, `expression::Expr`, `parser`
[INFO] [stdout]    --> src/evaluating/environment.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     evaluating::evaluator::walk,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 123 |     parsing::{expression::Expr, parser},
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EMPTY`, `TRUE`
[INFO] [stdout]   --> src/evaluating/evaluator.rs:10:28
[INFO] [stdout]    |
[INFO] [stdout] 10 |   values::{Lambda, RygVal, EMPTY, FALSE, NIL, TRUE},
[INFO] [stdout]    |                            ^^^^^              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/evaluating/values.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/evaluating/values.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::evaluating::environment::Envr`
[INFO] [stdout]   --> src/evaluating/values.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::evaluating::environment::Envr;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0583.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ryg` due to 3 previous errors; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "165d84b30deab42e8af61dd2b00ec3bfda51b0db8d68f0f9fc3926300c93b08a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "165d84b30deab42e8af61dd2b00ec3bfda51b0db8d68f0f9fc3926300c93b08a", kill_on_drop: false }`
[INFO] [stdout] 165d84b30deab42e8af61dd2b00ec3bfda51b0db8d68f0f9fc3926300c93b08a