[INFO] cloning repository https://github.com/Hell0XD/unlambda-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Hell0XD/unlambda-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHell0XD%2Funlambda-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHell0XD%2Funlambda-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] abe27eb72a6333bf8f52eb0ef1cd0e0ada58e8a2
[INFO] testing Hell0XD/unlambda-rs against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHell0XD%2Funlambda-rs" "/workspace/builds/worker-61/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-61/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Hell0XD/unlambda-rs on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Hell0XD/unlambda-rs
[INFO] finished tweaking git repo https://github.com/Hell0XD/unlambda-rs
[INFO] tweaked toml for git repo https://github.com/Hell0XD/unlambda-rs written to /workspace/builds/worker-61/source/Cargo.toml
[INFO] crate git repo https://github.com/Hell0XD/unlambda-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5b53435aad59074e3c61e003b3c208797e6098071b8b9e0486b7901dfe59c1f
[INFO] running `Command { std: "docker" "start" "-a" "c5b53435aad59074e3c61e003b3c208797e6098071b8b9e0486b7901dfe59c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5b53435aad59074e3c61e003b3c208797e6098071b8b9e0486b7901dfe59c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5b53435aad59074e3c61e003b3c208797e6098071b8b9e0486b7901dfe59c1f", kill_on_drop: false }`
[INFO] [stdout] c5b53435aad59074e3c61e003b3c208797e6098071b8b9e0486b7901dfe59c1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b49f4c50cbe1dc2bdff2f0b6c5c5848c5166a11e4c64bb92d8390063352ae00
[INFO] running `Command { std: "docker" "start" "-a" "9b49f4c50cbe1dc2bdff2f0b6c5c5848c5166a11e4c64bb92d8390063352ae00", kill_on_drop: false }`
[INFO] [stderr]    Compiling unlambda v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/main.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     while let Some(f) = program.next() {
[INFO] [stdout]   |                    ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `argument`
[INFO] [stdout]  --> src/main.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |         let argument = program.next().unwrap();
[INFO] [stdout]   |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_argument`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "9b49f4c50cbe1dc2bdff2f0b6c5c5848c5166a11e4c64bb92d8390063352ae00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b49f4c50cbe1dc2bdff2f0b6c5c5848c5166a11e4c64bb92d8390063352ae00", kill_on_drop: false }`
[INFO] [stdout] 9b49f4c50cbe1dc2bdff2f0b6c5c5848c5166a11e4c64bb92d8390063352ae00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de717de36fb3a94c5f789f53f75bf584ccf84cac40410abef47e0ed389a4102a
[INFO] running `Command { std: "docker" "start" "-a" "de717de36fb3a94c5f789f53f75bf584ccf84cac40410abef47e0ed389a4102a", kill_on_drop: false }`
[INFO] [stderr]    Compiling unlambda v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/main.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     while let Some(f) = program.next() {
[INFO] [stdout]   |                    ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `argument`
[INFO] [stdout]  --> src/main.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |         let argument = program.next().unwrap();
[INFO] [stdout]   |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_argument`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "de717de36fb3a94c5f789f53f75bf584ccf84cac40410abef47e0ed389a4102a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de717de36fb3a94c5f789f53f75bf584ccf84cac40410abef47e0ed389a4102a", kill_on_drop: false }`
[INFO] [stdout] de717de36fb3a94c5f789f53f75bf584ccf84cac40410abef47e0ed389a4102a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 75480dc159067bdd7ceaff5a1e662a718acd0b8057419acda1ff239bf75de686
[INFO] running `Command { std: "docker" "start" "-a" "75480dc159067bdd7ceaff5a1e662a718acd0b8057419acda1ff239bf75de686", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/main.rs:5:20
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 5 |     while let Some(f) = program.next() {
[INFO] [stdout] 
[INFO] [stderr]   |                    ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `argument`
[INFO] [stderr]  --> src/main.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |         let argument = program.next().unwrap();
[INFO] [stderr]   |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_argument`
[INFO] [stderr] 
[INFO] [stderr] warning: `unlambda` (bin "unlambda" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/unlambda-ca4a3f308d19c30b)
[INFO] running `Command { std: "docker" "inspect" "75480dc159067bdd7ceaff5a1e662a718acd0b8057419acda1ff239bf75de686", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75480dc159067bdd7ceaff5a1e662a718acd0b8057419acda1ff239bf75de686", kill_on_drop: false }`
[INFO] [stdout] 75480dc159067bdd7ceaff5a1e662a718acd0b8057419acda1ff239bf75de686