[INFO] cloning repository https://github.com/tylium/unit-enum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tylium/unit-enum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftylium%2Funit-enum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftylium%2Funit-enum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b37c04d7ab24a84a01172aeebd83ae498bc3a62
[INFO] checking tylium/unit-enum against try#51000a35bc99aeffdc092bf2226ab562eedb9eff for pr-135899
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftylium%2Funit-enum" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tylium/unit-enum on toolchain 51000a35bc99aeffdc092bf2226ab562eedb9eff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tylium/unit-enum
[INFO] finished tweaking git repo https://github.com/tylium/unit-enum
[INFO] tweaked toml for git repo https://github.com/tylium/unit-enum written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tylium/unit-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" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:6475c868a6d27846ca172efb246699580b64b57a5b3744ef73949e850a31b38a" "/opt/rustwide/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9be041b0b3409d3749f69f219110f6b8243cc6e1295bb556231304c65ac03cb4
[INFO] running `Command { std: "docker" "start" "-a" "9be041b0b3409d3749f69f219110f6b8243cc6e1295bb556231304c65ac03cb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9be041b0b3409d3749f69f219110f6b8243cc6e1295bb556231304c65ac03cb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9be041b0b3409d3749f69f219110f6b8243cc6e1295bb556231304c65ac03cb4", kill_on_drop: false }`
[INFO] [stdout] 9be041b0b3409d3749f69f219110f6b8243cc6e1295bb556231304c65ac03cb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:6475c868a6d27846ca172efb246699580b64b57a5b3744ef73949e850a31b38a" "/opt/rustwide/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfc2ce12da4d2ece2cb06005d03b1e9660d684eef91b84ce7785891da153572f
[INFO] running `Command { std: "docker" "start" "-a" "cfc2ce12da4d2ece2cb06005d03b1e9660d684eef91b84ce7785891da153572f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking quote v1.0.36
[INFO] [stderr]     Checking syn v2.0.68
[INFO] [stderr]     Checking unit-enum v1.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `discriminant`
[INFO] [stdout]    --> src/lib.rs:484:80
[INFO] [stdout]     |
[INFO] [stdout] 484 |     let variant_exprs = unit_variants.iter().zip(discriminants).map(|(variant, discriminant)| {
[INFO] [stdout]     |                                                                                ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_discriminant`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `discriminant`
[INFO] [stdout]    --> src/lib.rs:484:80
[INFO] [stdout]     |
[INFO] [stdout] 484 |     let variant_exprs = unit_variants.iter().zip(discriminants).map(|(variant, discriminant)| {
[INFO] [stdout]     |                                                                                ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_discriminant`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `discriminant`
[INFO] [stdout]    --> src/lib.rs:484:80
[INFO] [stdout]     |
[INFO] [stdout] 484 |     let variant_exprs = unit_variants.iter().zip(discriminants).map(|(variant, discriminant)| {
[INFO] [stdout]     |                                                                                ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_discriminant`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.91s
[INFO] running `Command { std: "docker" "inspect" "cfc2ce12da4d2ece2cb06005d03b1e9660d684eef91b84ce7785891da153572f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfc2ce12da4d2ece2cb06005d03b1e9660d684eef91b84ce7785891da153572f", kill_on_drop: false }`
[INFO] [stdout] cfc2ce12da4d2ece2cb06005d03b1e9660d684eef91b84ce7785891da153572f