[INFO] fetching crate named_args 0.0.1...
[INFO] checking named_args-0.0.1 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate named_args 0.0.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate named_args 0.0.1
[INFO] finished tweaking crates.io crate named_args 0.0.1
[INFO] tweaked toml for crates.io crate named_args 0.0.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate named_args 0.0.1 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate named_args 0.0.1 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05eba2e8a914565218698cc76f0582ff4c0e70fb0662e8619da78d857380e930
[INFO] running `Command { std: "docker" "start" "-a" "05eba2e8a914565218698cc76f0582ff4c0e70fb0662e8619da78d857380e930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05eba2e8a914565218698cc76f0582ff4c0e70fb0662e8619da78d857380e930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05eba2e8a914565218698cc76f0582ff4c0e70fb0662e8619da78d857380e930", kill_on_drop: false }`
[INFO] [stdout] 05eba2e8a914565218698cc76f0582ff4c0e70fb0662e8619da78d857380e930
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84f4d64d1cdb01ce18bb3b9072bde77f0db18daa7d0da35f207f80380e670e9e
[INFO] running `Command { std: "docker" "start" "-a" "84f4d64d1cdb01ce18bb3b9072bde77f0db18daa7d0da35f207f80380e670e9e", kill_on_drop: false }`
[INFO] [stderr]     Checking named_args v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/poc.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/poc.rs:12:40
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stdout]    |                                        ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/poc.rs:12:48
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stdout]    |                                                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/poc.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/poc.rs:12:40
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stdout]    |                                        ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/poc.rs:12:48
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn func(&self, x: Option<i32>, y: i32, z: Option<i32>) {
[INFO] [stdout]    |                                                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "84f4d64d1cdb01ce18bb3b9072bde77f0db18daa7d0da35f207f80380e670e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84f4d64d1cdb01ce18bb3b9072bde77f0db18daa7d0da35f207f80380e670e9e", kill_on_drop: false }`
[INFO] [stdout] 84f4d64d1cdb01ce18bb3b9072bde77f0db18daa7d0da35f207f80380e670e9e