[INFO] cloning repository https://github.com/Juan-M-V/bitcoin-chapter-1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Juan-M-V/bitcoin-chapter-1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJuan-M-V%2Fbitcoin-chapter-1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJuan-M-V%2Fbitcoin-chapter-1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 19c46e25dfd3707fc82283c53c6120d1a57f67fb
[INFO] checking Juan-M-V/bitcoin-chapter-1 against master#4c5f6e6277b89e47d73a192078697f7a5f3dc0ac for pr-97086
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJuan-M-V%2Fbitcoin-chapter-1" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Juan-M-V/bitcoin-chapter-1 on toolchain 4c5f6e6277b89e47d73a192078697f7a5f3dc0ac
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c5f6e6277b89e47d73a192078697f7a5f3dc0ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Juan-M-V/bitcoin-chapter-1
[INFO] finished tweaking git repo https://github.com/Juan-M-V/bitcoin-chapter-1
[INFO] tweaked toml for git repo https://github.com/Juan-M-V/bitcoin-chapter-1 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/Juan-M-V/bitcoin-chapter-1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c5f6e6277b89e47d73a192078697f7a5f3dc0ac" "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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+4c5f6e6277b89e47d73a192078697f7a5f3dc0ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 818feaf83b02fcb5a70493df242e1fa648968d9d20947a999ac0b0d77abe3f5f
[INFO] running `Command { std: "docker" "start" "-a" "818feaf83b02fcb5a70493df242e1fa648968d9d20947a999ac0b0d77abe3f5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "818feaf83b02fcb5a70493df242e1fa648968d9d20947a999ac0b0d77abe3f5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "818feaf83b02fcb5a70493df242e1fa648968d9d20947a999ac0b0d77abe3f5f", kill_on_drop: false }`
[INFO] [stdout] 818feaf83b02fcb5a70493df242e1fa648968d9d20947a999ac0b0d77abe3f5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+4c5f6e6277b89e47d73a192078697f7a5f3dc0ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29cb96b9e776a5a97abadb23badcc05a21ac7f58b5d90f40db88a9dfe71426cd
[INFO] running `Command { std: "docker" "start" "-a" "29cb96b9e776a5a97abadb23badcc05a21ac7f58b5d90f40db88a9dfe71426cd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking bitcoin_chapter1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias is never used: `Z2`
[INFO] [stdout]  --> src/field_element_const_generics.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub type Z2 = FieldElement2<2>; // 0, 1
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Z5`
[INFO] [stdout]  --> src/field_element_const_generics.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub type Z5 = FieldElement2<5>; // 0, 1,2,3,4
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Z5`
[INFO] [stdout]  --> src/field_element_const_generics.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub type Z5 = FieldElement2<5>; // 0, 1,2,3,4
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bitcoin_chapter1::FieldElement`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use bitcoin_chapter1::FieldElement;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `uno`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let uno: FieldElement2<5> = FieldElement2(1);
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_uno`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bitcoin_chapter1::FieldElement`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use bitcoin_chapter1::FieldElement;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `uno`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let uno: FieldElement2<5> = FieldElement2(1);
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_uno`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "29cb96b9e776a5a97abadb23badcc05a21ac7f58b5d90f40db88a9dfe71426cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29cb96b9e776a5a97abadb23badcc05a21ac7f58b5d90f40db88a9dfe71426cd", kill_on_drop: false }`
[INFO] [stdout] 29cb96b9e776a5a97abadb23badcc05a21ac7f58b5d90f40db88a9dfe71426cd