[INFO] cloning repository https://github.com/dahateb/rust-spo-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dahateb/rust-spo-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdahateb%2Frust-spo-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdahateb%2Frust-spo-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4f2302e57a0d8434bd3f8ce81c64c8b9880f6de6
[INFO] checking dahateb/rust-spo-challenge against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdahateb%2Frust-spo-challenge" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dahateb/rust-spo-challenge 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/dahateb/rust-spo-challenge
[INFO] finished tweaking git repo https://github.com/dahateb/rust-spo-challenge
[INFO] tweaked toml for git repo https://github.com/dahateb/rust-spo-challenge written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dahateb/rust-spo-challenge 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v0.6.8
[INFO] [stderr]   Downloaded serde v1.0.79
[INFO] [stderr]   Downloaded proc-macro2 v0.4.19
[INFO] [stderr]   Downloaded serde_derive v1.0.79
[INFO] [stderr]   Downloaded ryu v0.2.6
[INFO] [stderr]   Downloaded syn v0.15.4
[INFO] [stderr]   Downloaded serde_json v1.0.27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1fb6ccb1267bb7e411194c9d2ffdbe768faa0de587e1c7100c0f5c9805dd9f55
[INFO] running `Command { std: "docker" "start" "-a" "1fb6ccb1267bb7e411194c9d2ffdbe768faa0de587e1c7100c0f5c9805dd9f55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1fb6ccb1267bb7e411194c9d2ffdbe768faa0de587e1c7100c0f5c9805dd9f55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fb6ccb1267bb7e411194c9d2ffdbe768faa0de587e1c7100c0f5c9805dd9f55", kill_on_drop: false }`
[INFO] [stdout] 1fb6ccb1267bb7e411194c9d2ffdbe768faa0de587e1c7100c0f5c9805dd9f55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 685e0f161ea0a847b406ab96a77ff997515a2a52aa77be5454a9be5222493211
[INFO] running `Command { std: "docker" "start" "-a" "685e0f161ea0a847b406ab96a77ff997515a2a52aa77be5454a9be5222493211", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.15.4
[INFO] [stderr]    Compiling serde_derive v1.0.79
[INFO] [stderr]     Checking serde_json v1.0.27
[INFO] [stderr]     Checking rust-coding-challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.61s
[INFO] running `Command { std: "docker" "inspect" "685e0f161ea0a847b406ab96a77ff997515a2a52aa77be5454a9be5222493211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "685e0f161ea0a847b406ab96a77ff997515a2a52aa77be5454a9be5222493211", kill_on_drop: false }`
[INFO] [stdout] 685e0f161ea0a847b406ab96a77ff997515a2a52aa77be5454a9be5222493211
[INFO] checking dahateb/rust-spo-challenge against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdahateb%2Frust-spo-challenge" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dahateb/rust-spo-challenge 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/dahateb/rust-spo-challenge
[INFO] finished tweaking git repo https://github.com/dahateb/rust-spo-challenge
[INFO] tweaked toml for git repo https://github.com/dahateb/rust-spo-challenge written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/dahateb/rust-spo-challenge 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e081bcf48c2bba0318143a58a08f9ed86ed9b1ceed467864cf627143d21281bf
[INFO] running `Command { std: "docker" "start" "-a" "e081bcf48c2bba0318143a58a08f9ed86ed9b1ceed467864cf627143d21281bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e081bcf48c2bba0318143a58a08f9ed86ed9b1ceed467864cf627143d21281bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e081bcf48c2bba0318143a58a08f9ed86ed9b1ceed467864cf627143d21281bf", kill_on_drop: false }`
[INFO] [stdout] e081bcf48c2bba0318143a58a08f9ed86ed9b1ceed467864cf627143d21281bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] ff0e9c3bfc994a22efc225d49944b780beaaee1f5c00b749d1d056ca45550dba
[INFO] running `Command { std: "docker" "start" "-a" "ff0e9c3bfc994a22efc225d49944b780beaaee1f5c00b749d1d056ca45550dba", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.15.4
[INFO] [stderr]    Compiling serde_derive v1.0.79
[INFO] [stderr]     Checking serde_json v1.0.27
[INFO] [stderr]     Checking rust-coding-challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/main.rs:15:66
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let input : Input = serde_json::from_str(&input_raw).map_err(|err| panic!("wrong format: {}", err)).unwrap();
[INFO] [stdout]    |                                                                  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let input : Input = serde_json::from_str(&input_raw).map_err(|err| -> /* Type */ panic!("wrong format: {}", err)).unwrap();
[INFO] [stdout]    |                                                                        +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/main.rs:15:66
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let input : Input = serde_json::from_str(&input_raw).map_err(|err| panic!("wrong format: {}", err)).unwrap();
[INFO] [stdout]    |                                                                  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let input : Input = serde_json::from_str(&input_raw).map_err(|err| -> /* Type */ panic!("wrong format: {}", err)).unwrap();
[INFO] [stdout]    |                                                                        +++++++++++++
[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-coding-challenge` (bin "rust-coding-challenge") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust-coding-challenge` (bin "rust-coding-challenge" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ff0e9c3bfc994a22efc225d49944b780beaaee1f5c00b749d1d056ca45550dba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff0e9c3bfc994a22efc225d49944b780beaaee1f5c00b749d1d056ca45550dba", kill_on_drop: false }`
[INFO] [stdout] ff0e9c3bfc994a22efc225d49944b780beaaee1f5c00b749d1d056ca45550dba