[INFO] cloning repository https://github.com/JhersonRojas/rust-calculator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JhersonRojas/rust-calculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJhersonRojas%2Frust-calculator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJhersonRojas%2Frust-calculator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aa995c5fee557963c9639cd9100feb49e623f302
[INFO] checking JhersonRojas/rust-calculator against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJhersonRojas%2Frust-calculator" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JhersonRojas/rust-calculator on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JhersonRojas/rust-calculator
[INFO] finished tweaking git repo https://github.com/JhersonRojas/rust-calculator
[INFO] tweaked toml for git repo https://github.com/JhersonRojas/rust-calculator written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/JhersonRojas/rust-calculator 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7218f56417798548f8bc70e4b1f35c685d76dd42e0a279fb391c575924382e78
[INFO] running `Command { std: "docker" "start" "-a" "7218f56417798548f8bc70e4b1f35c685d76dd42e0a279fb391c575924382e78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7218f56417798548f8bc70e4b1f35c685d76dd42e0a279fb391c575924382e78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7218f56417798548f8bc70e4b1f35c685d76dd42e0a279fb391c575924382e78", kill_on_drop: false }`
[INFO] [stdout] 7218f56417798548f8bc70e4b1f35c685d76dd42e0a279fb391c575924382e78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35481e907a6a247e77dc2f578ceacb529274e6858f4cc4638d1560f82ae2ba56
[INFO] running `Command { std: "docker" "start" "-a" "35481e907a6a247e77dc2f578ceacb529274e6858f4cc4638d1560f82ae2ba56", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-calculator v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] running `Command { std: "docker" "inspect" "35481e907a6a247e77dc2f578ceacb529274e6858f4cc4638d1560f82ae2ba56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35481e907a6a247e77dc2f578ceacb529274e6858f4cc4638d1560f82ae2ba56", kill_on_drop: false }`
[INFO] [stdout] 35481e907a6a247e77dc2f578ceacb529274e6858f4cc4638d1560f82ae2ba56
[INFO] checking JhersonRojas/rust-calculator against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJhersonRojas%2Frust-calculator" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JhersonRojas/rust-calculator on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JhersonRojas/rust-calculator
[INFO] finished tweaking git repo https://github.com/JhersonRojas/rust-calculator
[INFO] tweaked toml for git repo https://github.com/JhersonRojas/rust-calculator written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/JhersonRojas/rust-calculator 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 943414c17ac24b87c8d1ae4cc7845937379ffa2a6e14722b07313e8f9861aab4
[INFO] running `Command { std: "docker" "start" "-a" "943414c17ac24b87c8d1ae4cc7845937379ffa2a6e14722b07313e8f9861aab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "943414c17ac24b87c8d1ae4cc7845937379ffa2a6e14722b07313e8f9861aab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "943414c17ac24b87c8d1ae4cc7845937379ffa2a6e14722b07313e8f9861aab4", kill_on_drop: false }`
[INFO] [stdout] 943414c17ac24b87c8d1ae4cc7845937379ffa2a6e14722b07313e8f9861aab4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ccb51b61dbe6cb1a33e491e0d8627804c8c3b473f5e29d6139655bbab93d59ee
[INFO] running `Command { std: "docker" "start" "-a" "ccb51b61dbe6cb1a33e491e0d8627804c8c3b473f5e29d6139655bbab93d59ee", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-calculator v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/operaciones.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | /     if num1 == 0 || num2 == 0 {
[INFO] [stdout] 19 | |         return None;
[INFO] [stdout] 20 | |     } else {
[INFO] [stdout] 21 | |         return Some(num1 as f64 / num2 as f64);
[INFO] [stdout] 22 | |     };
[INFO] [stdout]    | |_____^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/operaciones.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | /     if num1 == 0 || num2 == 0 {
[INFO] [stdout] 19 | |         return None;
[INFO] [stdout] 20 | |     } else {
[INFO] [stdout] 21 | |         return Some(num1 as f64 / num2 as f64);
[INFO] [stdout] 22 | |     };
[INFO] [stdout]    | |_____^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-calculator` (bin "rust-calculator") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust-calculator` (bin "rust-calculator" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ccb51b61dbe6cb1a33e491e0d8627804c8c3b473f5e29d6139655bbab93d59ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccb51b61dbe6cb1a33e491e0d8627804c8c3b473f5e29d6139655bbab93d59ee", kill_on_drop: false }`
[INFO] [stdout] ccb51b61dbe6cb1a33e491e0d8627804c8c3b473f5e29d6139655bbab93d59ee