[INFO] cloning repository https://github.com/ultamatt/big_mac [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ultamatt/big_mac" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fultamatt%2Fbig_mac", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fultamatt%2Fbig_mac'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5502690811aa1fb62191c6813610469443ded894 [INFO] checking ultamatt/big_mac against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fultamatt%2Fbig_mac" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ultamatt/big_mac on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ultamatt/big_mac [INFO] finished tweaking git repo https://github.com/ultamatt/big_mac [INFO] tweaked toml for git repo https://github.com/ultamatt/big_mac written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/ultamatt/big_mac 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded cslice v0.2.0 [INFO] [stderr] Downloaded nix v0.22.1 [INFO] [stderr] Downloaded mac_address v1.1.2 [INFO] [stderr] Downloaded neon v0.9.1 [INFO] [stderr] Downloaded neon-build v0.9.1 [INFO] [stderr] Downloaded neon-macros v0.9.1 [INFO] [stderr] Downloaded neon-runtime v0.9.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a1e0cddbb539db148315a527e1c11cfc3c78d903cc964e8f3d434acbd57a5ee1 [INFO] running `Command { std: "docker" "start" "-a" "a1e0cddbb539db148315a527e1c11cfc3c78d903cc964e8f3d434acbd57a5ee1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a1e0cddbb539db148315a527e1c11cfc3c78d903cc964e8f3d434acbd57a5ee1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a1e0cddbb539db148315a527e1c11cfc3c78d903cc964e8f3d434acbd57a5ee1", kill_on_drop: false }` [INFO] [stdout] a1e0cddbb539db148315a527e1c11cfc3c78d903cc964e8f3d434acbd57a5ee1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4cbb4f05ad94f588766ca5bf9ad6567ab7b63a8d8a2014fe02a2553ca958b7c4 [INFO] running `Command { std: "docker" "start" "-a" "4cbb4f05ad94f588766ca5bf9ad6567ab7b63a8d8a2014fe02a2553ca958b7c4", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.29 [INFO] [stderr] Compiling neon-build v0.9.1 [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling libc v0.2.101 [INFO] [stderr] Checking neon-runtime v0.9.1 [INFO] [stderr] Checking cslice v0.2.0 [INFO] [stderr] Compiling neon v0.9.1 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking nix v0.22.1 [INFO] [stderr] Compiling neon-macros v0.9.1 [INFO] [stderr] Checking mac_address v1.1.2 [INFO] [stderr] Checking big_mac v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/lib.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | Err(e) => None, [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/lib.rs:28:13 [INFO] [stdout] | [INFO] [stdout] 28 | Err(e) => None, [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `default_mac` should have an upper case name [INFO] [stdout] --> src/lib.rs:3:7 [INFO] [stdout] | [INFO] [stdout] 3 | const default_mac:& str = "00:00:00:00:00:00"; [INFO] [stdout] | ^^^^^^^^^^^ help: convert the identifier to upper case: `DEFAULT_MAC` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_upper_case_globals)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/lib.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | Err(e) => None, [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/lib.rs:28:13 [INFO] [stdout] | [INFO] [stdout] 28 | Err(e) => None, [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `default_mac` should have an upper case name [INFO] [stdout] --> src/lib.rs:3:7 [INFO] [stdout] | [INFO] [stdout] 3 | const default_mac:& str = "00:00:00:00:00:00"; [INFO] [stdout] | ^^^^^^^^^^^ help: convert the identifier to upper case: `DEFAULT_MAC` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_upper_case_globals)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:44:5 [INFO] [stdout] | [INFO] [stdout] 44 | cx.export_function("get_mac_by_name", get_mac_by_name); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 44 | let _ = cx.export_function("get_mac_by_name", get_mac_by_name); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:44:5 [INFO] [stdout] | [INFO] [stdout] 44 | cx.export_function("get_mac_by_name", get_mac_by_name); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 44 | let _ = cx.export_function("get_mac_by_name", get_mac_by_name); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.92s [INFO] running `Command { std: "docker" "inspect" "4cbb4f05ad94f588766ca5bf9ad6567ab7b63a8d8a2014fe02a2553ca958b7c4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4cbb4f05ad94f588766ca5bf9ad6567ab7b63a8d8a2014fe02a2553ca958b7c4", kill_on_drop: false }` [INFO] [stdout] 4cbb4f05ad94f588766ca5bf9ad6567ab7b63a8d8a2014fe02a2553ca958b7c4