[INFO] cloning repository https://github.com/zengol/Exercise_around_the_result_enum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zengol/Exercise_around_the_result_enum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzengol%2FExercise_around_the_result_enum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzengol%2FExercise_around_the_result_enum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2fd804ac050b5835c79a0ee4d195d8707096fb0
[INFO] checking zengol/Exercise_around_the_result_enum against try#be699666730c5a1745838222e98e2d85019affdc for pr-134300
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzengol%2FExercise_around_the_result_enum" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zengol/Exercise_around_the_result_enum on toolchain be699666730c5a1745838222e98e2d85019affdc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+be699666730c5a1745838222e98e2d85019affdc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zengol/Exercise_around_the_result_enum
[INFO] finished tweaking git repo https://github.com/zengol/Exercise_around_the_result_enum
[INFO] tweaked toml for git repo https://github.com/zengol/Exercise_around_the_result_enum written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/zengol/Exercise_around_the_result_enum 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" "+be699666730c5a1745838222e98e2d85019affdc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+be699666730c5a1745838222e98e2d85019affdc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e45bf58b4d64d9b94887468745c63a366fd6b6781859fb979084a2e1142c7f2
[INFO] running `Command { std: "docker" "start" "-a" "4e45bf58b4d64d9b94887468745c63a366fd6b6781859fb979084a2e1142c7f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e45bf58b4d64d9b94887468745c63a366fd6b6781859fb979084a2e1142c7f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e45bf58b4d64d9b94887468745c63a366fd6b6781859fb979084a2e1142c7f2", kill_on_drop: false }`
[INFO] [stdout] 4e45bf58b4d64d9b94887468745c63a366fd6b6781859fb979084a2e1142c7f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+be699666730c5a1745838222e98e2d85019affdc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 595c7efb17e69f10300d1049443f7ac2a77c9b0363cbe3eb8dc7d723af74ea75
[INFO] running `Command { std: "docker" "start" "-a" "595c7efb17e69f10300d1049443f7ac2a77c9b0363cbe3eb8dc7d723af74ea75", kill_on_drop: false }`
[INFO] [stderr]     Checking error_and_result v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]   --> src/main.rs:27:11
[INFO] [stdout]    |
[INFO] [stdout] 27 |     match (validate_ingredients(&ingredients)) {
[INFO] [stdout]    |           ^                                  ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 27 -     match (validate_ingredients(&ingredients)) {
[INFO] [stdout] 27 +     match validate_ingredients(&ingredients) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]   --> src/main.rs:27:11
[INFO] [stdout]    |
[INFO] [stdout] 27 |     match (validate_ingredients(&ingredients)) {
[INFO] [stdout]    |           ^                                  ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 27 -     match (validate_ingredients(&ingredients)) {
[INFO] [stdout] 27 +     match validate_ingredients(&ingredients) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `validation`
[INFO] [stdout]   --> src/main.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |         Ok(validation) => {
[INFO] [stdout]    |            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_validation`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `validation`
[INFO] [stdout]   --> src/main.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |         Ok(validation) => {
[INFO] [stdout]    |            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_validation`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]   --> src/main.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Err(error) => {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]   --> src/main.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Err(error) => {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "595c7efb17e69f10300d1049443f7ac2a77c9b0363cbe3eb8dc7d723af74ea75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "595c7efb17e69f10300d1049443f7ac2a77c9b0363cbe3eb8dc7d723af74ea75", kill_on_drop: false }`
[INFO] [stdout] 595c7efb17e69f10300d1049443f7ac2a77c9b0363cbe3eb8dc7d723af74ea75