[INFO] cloning repository https://github.com/lupuszr/rust-lambda-calculus-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lupuszr/rust-lambda-calculus-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flupuszr%2Frust-lambda-calculus-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flupuszr%2Frust-lambda-calculus-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0724c85f11fce2189826745b071fd3b57d3daa21
[INFO] testing lupuszr/rust-lambda-calculus-interpreter against 1.83.0 for beta-1.84.0-4-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flupuszr%2Frust-lambda-calculus-interpreter" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lupuszr/rust-lambda-calculus-interpreter on toolchain 1.83.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lupuszr/rust-lambda-calculus-interpreter
[INFO] finished tweaking git repo https://github.com/lupuszr/rust-lambda-calculus-interpreter
[INFO] tweaked toml for git repo https://github.com/lupuszr/rust-lambda-calculus-interpreter written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/lupuszr/rust-lambda-calculus-interpreter 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" "+1.83.0" "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-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77ce65acb7e78f542b59ba7e817596db269ce73c4d2eb74f2a7bdd835fa4d64d
[INFO] running `Command { std: "docker" "start" "-a" "77ce65acb7e78f542b59ba7e817596db269ce73c4d2eb74f2a7bdd835fa4d64d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77ce65acb7e78f542b59ba7e817596db269ce73c4d2eb74f2a7bdd835fa4d64d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77ce65acb7e78f542b59ba7e817596db269ce73c4d2eb74f2a7bdd835fa4d64d", kill_on_drop: false }`
[INFO] [stdout] 77ce65acb7e78f542b59ba7e817596db269ce73c4d2eb74f2a7bdd835fa4d64d
[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=warn" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8c26f3deb150932e4e84a6044f1673f81e5195e30a0041c41006c56cb682413
[INFO] running `Command { std: "docker" "start" "-a" "f8c26f3deb150932e4e84a6044f1673f81e5195e30a0041c41006c56cb682413", kill_on_drop: false }`
[INFO] [stderr]    Compiling lambda_interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `cell::RefCell`
[INFO] [stdout]  --> src/main.rs:1:41
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{rc::Rc, collections::HashMap, cell::RefCell, ops::Deref};
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/main.rs:12:34
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let x = Rc::new(Box::new((a)));
[INFO] [stdout]    |                                  ^ ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 12 -         let x = Rc::new(Box::new((a)));
[INFO] [stdout] 12 +         let x = Rc::new(Box::new(a));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Abstraction`, `Application`, and `Variable`
[INFO] [stdout]    --> src/main.rs:150:22
[INFO] [stdout]     |
[INFO] [stdout] 150 |     use Expression::{Abstraction, Application, Variable};
[INFO] [stdout]     |                      ^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_abstraction` is never used
[INFO] [stdout]   --> src/main.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Expression {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 36 |     pub fn new_abstraction(param: String, body: Expression) -> Expression {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "f8c26f3deb150932e4e84a6044f1673f81e5195e30a0041c41006c56cb682413", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8c26f3deb150932e4e84a6044f1673f81e5195e30a0041c41006c56cb682413", kill_on_drop: false }`
[INFO] [stdout] f8c26f3deb150932e4e84a6044f1673f81e5195e30a0041c41006c56cb682413
[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=warn" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e3ce63f07fb8cc4b85aaa8158940dada632e0b09c58112ec050d760b1692284
[INFO] running `Command { std: "docker" "start" "-a" "5e3ce63f07fb8cc4b85aaa8158940dada632e0b09c58112ec050d760b1692284", kill_on_drop: false }`
[INFO] [stderr]    Compiling lambda_interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `cell::RefCell`
[INFO] [stdout]  --> src/main.rs:1:41
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{rc::Rc, collections::HashMap, cell::RefCell, ops::Deref};
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/main.rs:12:34
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let x = Rc::new(Box::new((a)));
[INFO] [stdout]    |                                  ^ ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 12 -         let x = Rc::new(Box::new((a)));
[INFO] [stdout] 12 +         let x = Rc::new(Box::new(a));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Abstraction`, `Application`, and `Variable`
[INFO] [stdout]    --> src/main.rs:150:22
[INFO] [stdout]     |
[INFO] [stdout] 150 |     use Expression::{Abstraction, Application, Variable};
[INFO] [stdout]     |                      ^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_abstraction` is never used
[INFO] [stdout]   --> src/main.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Expression {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 36 |     pub fn new_abstraction(param: String, body: Expression) -> Expression {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "5e3ce63f07fb8cc4b85aaa8158940dada632e0b09c58112ec050d760b1692284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e3ce63f07fb8cc4b85aaa8158940dada632e0b09c58112ec050d760b1692284", kill_on_drop: false }`
[INFO] [stdout] 5e3ce63f07fb8cc4b85aaa8158940dada632e0b09c58112ec050d760b1692284
[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=warn" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c423160e6caa779ddfc3f75f97764bb8f36a5a376e59210d7d6d315ae024009f
[INFO] running `Command { std: "docker" "start" "-a" "c423160e6caa779ddfc3f75f97764bb8f36a5a376e59210d7d6d315ae024009f", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `cell::RefCell`
[INFO] [stderr]  --> src/main.rs:1:41
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{rc::Rc, collections::HashMap, cell::RefCell, ops::Deref};
[INFO] [stderr]   |                                         ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/main.rs:12:34
[INFO] [stderr]    |
[INFO] [stderr] 12 |         let x = Rc::new(Box::new((a)));
[INFO] [stderr]    |                                  ^ ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 12 -         let x = Rc::new(Box::new((a)));
[INFO] [stderr] 12 +         let x = Rc::new(Box::new(a));
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Abstraction`, `Application`, and `Variable`
[INFO] [stderr]    --> src/main.rs:150:22
[INFO] [stderr]     |
[INFO] [stderr] 150 |     use Expression::{Abstraction, Application, Variable};
[INFO] [stderr]     |                      ^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new_abstraction` is never used
[INFO] [stderr]   --> src/main.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 35 | impl Expression {
[INFO] [stderr]    | --------------- associated function in this implementation
[INFO] [stderr] 36 |     pub fn new_abstraction(param: String, body: Expression) -> Expression {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `lambda_interpreter` (bin "lambda_interpreter" test) generated 4 warnings (run `cargo fix --bin "lambda_interpreter" --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/lambda_interpreter-9c4075aabb4b5e1a)
[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" "c423160e6caa779ddfc3f75f97764bb8f36a5a376e59210d7d6d315ae024009f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c423160e6caa779ddfc3f75f97764bb8f36a5a376e59210d7d6d315ae024009f", kill_on_drop: false }`
[INFO] [stdout] c423160e6caa779ddfc3f75f97764bb8f36a5a376e59210d7d6d315ae024009f
